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    Green Mountain Power Launches Smart Water Heater Program – vtdigger.org - May 23, 2017 by Mr HomeBuilder

    News Release Green Mountain Power May 23, 2017

    Contact: Kristin Carlson, Green Mountain Power 802-229-8200 [emailprotected]

    Colchester Green Mountain Power is excited to offer its customers a new opportunity to be part of the energy revolution by reducing energy use, saving money and helping GMP reduce peak energy demand for all customers.

    GMPs new eSmartwater program includes an AquantaTM smart water heater controller that lets you heat water when you need it, and save money when you dont. The Aquanta gets installed on your existing water heater to bring it out of the basement and into the palm of your hand to provide convenient control and hot water usage information.

    The program also includes a Nest Learning ThermostatTM to help reduce your overall energy costs. Nest Thermostats use technology to find ways to make heating or cooling your home more efficient, making small but impactful changes that can save you money. The Nest Smart App also provides remote monitoring and control of the temperature, so you can make adjustments from its mobile app, even when you are away from your home.

    This is another step forward in radically transforming the grid to a system that is more cost-effective and home-, business- and community-based, said Green Mountain Power President and CEO Mary Powell. As an energy transformation company, GMP is committed to leveraging the latest technologies to drive down costs for customers, while empowering customers to increase comfort and reduce fossil fuel use. This new program builds on our work with Tesla and others to shave peak demand costs, saving money and reducing reliance on the bulk grid system.

    The eSmartwater program is only 0.99 cents per month for both the Aquanta and Nest Thermostat. And as part of the program, GMP will be able to lower costs for all customers by leveraging water heaters during periods of peak energy demand, when energy is the most expensive. The Nest Thermostat alone saves an average of $131 to $145 in annual savings per customer. GMP will partner with local contractors for installation.

    This is an important partnership that will allow us to offer a compelling connected home bundle to Vermonters, enabling them to save energy and reduce their carbon emissions said Hannah Bascom, who leads regulated energy partnerships for Nest labs.

    Aquanta is a Works with Nest partner, meaning all the technology is seamlessly integrated.

    Our water heater controller allows customers to control their water heater as well as connect it to the smart grid, said Aquanta CEO Matt Carlson. Were excited to work with Green Mountain Power and its customers to help them gain more control over energy use. This is the future, and Vermont is leading the way.

    This system can be installed on existing electric water heaters, and is a big step forward from traditional water heater programs, because the Aquanta provides a more dynamic control set that will ensure customer comfort at all times.

    And there is an exciting local economic connection with Nest: GLOBALFOUNDRIES Essex Junction plant manufactures the semiconductor that enables the communication capability of the Nest Thermostat, allowing it to be a smart thermostat.

    We are proud our team in Vermont is working to support the innovations that are improving the lives of our neighbors, said Christine Dunbar, vice president of RF Product Management at GLOBALFOUNDRIES.

    All of this will be integrated by Virtual Peaker, a GMP Inspire Space contest winner, which provides a software platform that helps utility companies manage residential demand by shifting the consumption patterns of internet-based household devices.

    This program will further show how we can work together and usher in a new energy future that reduces our reliance on fossil fuels, said William Burke, CEO and founder of Virtual Peaker.

    For more information on the eSmartwater program and to sign up, please visit: http://products.greenmountainpower.com/product/esmartwater/

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    Green Mountain Power Launches Smart Water Heater Program - vtdigger.org

    Louisville neighbors band together in an ecovillage to make a difference – The Courier-Journal - May 21, 2017 by Mr HomeBuilder

    The Courier-Journal
    Louisville neighbors band together in an ecovillage to make a difference
    The Courier-Journal
    A fourth installed a geothermal system that taps the consistent underground temperature of about 55 degrees for heating and cooling. These neighbors are intent on making a difference despite a seemingly overwhelming challenge: transforming the global ...

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    Louisville neighbors band together in an ecovillage to make a difference - The Courier-Journal

    Iberville Parish courthouse upgrades proving more costly, time consuming than expected – The Advocate - May 21, 2017 by Mr HomeBuilder

    PLAQUEMINE It was only supposed to take a few weeks and cost around $2 million to upgrade the air conditioning system at the Iberville Parish courthouse, but it hasn't turned out that way.

    Nearly a year later, the courthouse still looks like a construction zone, and Parish President J. Mitchell Ourso this week revealed a new structural issue that has complicated matters and could nearly double the costs to keep the building safe.

    "It has been one thing after the other with that courthouse," Ourso said. "But we have to spend what we have to to make it safe."

    The parish had to completely shutdown the courthouse for 12 days in July and temporarily relocate people working there to satellite offices after asbestos was discovered in the courthouse's 30-year-old heating and cooling system as contractors prepared to install upgrades.

    PLAQUEMINE The Iberville Parish Courthouse is shutting down for about 12 days beginning Tu

    The building houses the Iberville Parish Sheriff's Office, Clerk of Court, Assessor's Office, District Attorney's Office and some of the parish administration.

    Iberville Parish Finance Director Randall Dunn said it cost the parish another $1 million to hire a contractor to perform asbestos abatement at the courthouse.

    Once that work was done, work on upgrading the building's cooling system resumed but had to be done in phases to ease the burden of having to relocate so many offices that were dealing with local and state elections and conducting day-to-day court operations during the upgrades.

    The HVAC system work has been done floor-by-floor and section-by-section since last fall. Contractors just recently finished upgrades for the Clerk of Court's Office, Dunn said, and are set to begin with the Sheriff's Office soon.

    But just as work on the project appeared to be winding down, Mitchell revealed to the Parish Council the recent discovery of a new problem that's adding to the headaches.

    "One of the contractors noticed on the west side of the building that the parapet was cracked," Ourso said.

    The parish currently has closed the parking lot on the west side of the building and has installed fencing to prevent anyone from entering of exiting from that side while they work to secure another contractor to repair the roofing on the building.

    "We haven't nailed down the price yet but it's probably going to take around $800,000," Ourso said.

    There's no timeline yet on how long it will be when that work gets started.

    "This courthouse is kind of like a big motel that we manage but it belongs to the taxpayers," Ourso said. "The public shouldn't take it for granted. It takes a lot of money to keep this thing up and running."

    Follow Terry Jones on Twitter, @tjonesreporter.

    See more here:
    Iberville Parish courthouse upgrades proving more costly, time consuming than expected - The Advocate

    Air Conditioning Install Portland Efficiency Heating & Cooling - May 20, 2017 by Mr HomeBuilder

    When the summer heats up and youre after a new, more efficient cooling system, who do you call for an air conditioning installation in Portland, OR? The answer is, Efficiency Heating and Cooling. Claiming were the best could sound a little arrogant.Its not arrogance, but rather confidence in our dedication to our customers. We know that the service we deliveris simply second to none. Combine that with fair pricing, and industry leading equipment, and youve got a Portland air conditioning installation & replacement company thats a step ahead of the rest.

    HVAC systems are not like appliances. You cant just call up Home Depot, order the equipment based on reviews, and then plug it in. Each home has unique requirements that must be met with precise detail. Equipment must be sized and paired correctly, and your budgetary and efficiency goals must also be factored in. In fact, if you receive pricing from any HVAC company without them visiting your home, be careful. That isnt a good sign. When you call Efficiency Heating and Cooling for any air conditioning install Portland need, youre making a wise investment. We design the ideal solution to meet your budgetary, comfort and efficiency goals.

    The most important aspect of home comfort is the actual design and install. Even the finest equipment sized and installed wrong will fail. However, with that said, you do need the foundation of quality equipment to build on. Efficiency gives you the best of both. An air conditioning installation in Portland done right, using equipment from industry leading manufacturers. Air conditioning install Portland: Nobody does it better than Efficiency Heating and Cooling! We have NATE certified technicians, were a BBB A+ rated company, and we care about your comfort.

    I had Matt come out several years ago and put in A/C in my new home. Matt came by checked out square footage took some other measurements and then walked us through different options for an AC unit. He gave me quite an education and helped decide which unit was best for my home. That unit has been running flawlessly ever since and the work Efficiency Heating and Cooling did was top notch. I highly recommend this company. Integrity, knowledge and quality craftsmanship. Thanks Matt!

    5 stars - based on 1 reviews

    Air conditioning installation in Portland -- Call Efficiency today to schedule a free estimate. You can also contact us via the form below.

    *Your information is not shared or distributed outside our company.

    In addition to air conditioning installations, we offer maintenance and repair for any make and model of equipment. And were accurate in our problem diagnosis. There are too many homeowners in the Portland area who fork over money they didnt need to spend due to poor advice from a technician. When you rely on us for your AC repair needs, you will only spend the money thats needed to be spent. Well give you the best options to consider, to get your home comfortable again in no time.

    If you have an addition, garage, workshop or office that isnt attached to ducting, how do you keep it comfortable? In the past, the answer was noisy window and floor units. But wow the noise almost makes the comfort not worth it! Now you have a better option: a ductless mini split system. What are they? Theyre compact air conditioner or heat pump installationsthat operate in the traditional split system design, however the indoor unit is compact, and designed to condition a single area. Multiple indoor air handlers can be powered from a single outdoor ductless unit. The result is quiet, efficient comfort for any living space! Read more on our ductless heating and cooling page.

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    Air Conditioning Install Portland Efficiency Heating & Cooling

    Insiders Price Guide to a New Heating and Cooling System … - May 20, 2017 by Mr HomeBuilder

    High rated air filter: Filter prices cost $500-$3,000 for most homes.

    Air purifier: Air purifiers kill the living organisms in the air that an air filter does not remove. They cost $1,400-$2,500.

    Coil purifier: A coil purifier or stick light is a small ultraviolet device mounted within a few inches up to 12 inches of the evaporator coil. It stops bacterial growth before it can turn into spores and get air born. Prices range from $300-$1,000.

    Heat pump: Most heat pump upgrades cost $1,000-$2,000, plus additional expenses for electrical upgrade or wiring.

    Hybrid / Dual fuel: Most hybrid upgrades cost $800-$1,600. Hybrid is all the benefits of the heat pump without the loss of the good heat of a gas furnace.

    Dehumidifier and fresh air: Dehumidification can get very expensive, depending on the size, location and fresh air requirements. Prices range from $2,000-$5,000.

    Humidifier: The price of adding moisture to the air can vary. A simple bypass may be from $300 and a steam model can be as expensive as $1,500.

    Thermostat: Most thermostats cost $100-$600. More expensive controls can be remote capable, programmable, learning or iPhone controllable.

    Although all of these numbers and prices are very general, I do hope this article helps you better understand the prices for heating and air conditioning systems, and what to expect when you start going through your comfort system buying process. Remember, a good air conditioner is never seen or noticed. Its the bad ones that you have to constantly adjust to maintain comfort.

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    Insiders Price Guide to a New Heating and Cooling System ...

    Emilygrene Corp. Merges With Air Tight Heat Rite HVAC Installation And Services – Emilygrene Corp. – MENAFN.COM - May 20, 2017 by Mr HomeBuilder
    Emilygrene Corp. Merges With Air Tight Heat Rite HVAC Installation And Services - Emilygrene Corp.
    MENAFN.COM
    In response to increased demand for clean energy infrastructure, HVAC installation and maintenance are now available through Emilygrene Corp., offering a full scope of services including cooling and heating unit repair and installation, automation and ...

    Originally posted here:
    Emilygrene Corp. Merges With Air Tight Heat Rite HVAC Installation And Services - Emilygrene Corp. - MENAFN.COM

    School work: District looks at needs as buildings age – Grand Forks Herald - May 20, 2017 by Mr HomeBuilder

    The system "is broke and can't be repaired," said Ed Gerhardt, the district's business manager.

    The hot-water boiler system will be replaced by new technology, a gas-fired, rooftop heating and cooling system, he said.

    The failure did not cause any safety issues, nor did it affect personal use of hot water in the building.

    The heating system was original to the school, which was constructed in 1974, said Rick Werness, buildings and grounds director for Grand Forks Public Schools.

    He and other members of the district facilities maintenance staff as well as contractors from local mechanical engineering and architecture firms went room to room at Winship on Wednesday, removing ceiling tiles to check on location and quality of ductwork.

    Analysis of the ductwork will allow the crew "to be strategic about where the rooftop units will go," said Andrew Budke, associate architect with JLG Architects of Grand Forks.

    The heating system failure at Winship occurred as the school district is in the midst of thorough study of all its facilities, Werness said.

    The study, conducted by JLG, "will look at everything," he said, and will address issues such as aging equipment.

    Launched in February, the facilities assessment should be completed in January, when a final report is made public, he said.

    The study, which encompasses deferred maintenance and long-range planning, will help the district evaluate its roughly 20 buildings, Gerhardt said.

    "We'll look at the entire buildingthe heating and cooling, electrical, the windows."

    That information will be used to prioritize "what is most important to address," he said, and for budget planning.

    The cost to install a new heat pump system at Winship will be charged to the school district's building fund, Gerhardt said.

    Work to prepare for installation of the new system has already begun.

    Delivery of the new system equipment is expected to take between four to six weeks, he said.

    The timing of the old unit's demise was a lucky break, Gerhardt said.

    "We are fortunate it happened when it did. ... It would have been more catastrophic if it had happened during the winter."

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    School work: District looks at needs as buildings age - Grand Forks Herald

    John Sabo of All Air & Heat Talks About Servicing Your A/C Now … – SpaceCoastDaily.com - May 18, 2017 by Mr HomeBuilder

    full-service heating, air conditioning contractor

    SPACE COAST DAILY TV:Space Coast Daily speaks John Sabo, owner of All Air & Heat about servicing your A/C now that the weather is heating up.All Air & Heat Inc. is a full-service heating and air conditioning contractorandwas formed to serve all of Brevard Countys home builders with high-quality HVAC solutions for ventilation ductwork on new home construction.

    BREVARD COUNTY, FLORIDA All Air & Heat Inc. is a full-service heating and air conditioning contractorandwas formed to serve all of Brevard Countys home builders with high-quality HVAC solutions for ventilation ductwork on new home construction.

    Through years of experience, All Air & Heat Inc. evolved into a specialist in heating and air conditioning systems and began serving residential customers who were searching for expertise in the AC industry.

    Through years of experience, All Air & Heat Inc. evolved into a specialist in heating and air conditioning systems and began serving residential customers who were searching for expertise in the AC industry.

    All Air & Heat Inc., located at 3860 Curtis Boulevard in Port St. John, has been serving all of Brevard County with superior service for more than 20 years.

    Call All Air & Heat at321-394-9411and ask them about their free, in-home consultation that provides you with a free estimate and advises you on the best options to get the job done right.

    All Air & Heat Inc. is your one stop for all of your heating and air conditioning needs, we offer a wide range of services to accommodate all of your HVAC and indoor air quality needs.

    Weve been providing Port St. John, Melbourne, Titusville, and the rest of Brevard County with superior HVAC service for over 20 years and we look forward to helping you with a customized solution thats right for you, said owner John Sabo.

    From routine maintenance and repair to complete air system installation, the All Air & Heat skilled technicians have the experience needed to get your job done on time and on budget, services include:

    SPACE COAST DAILY TV:All Air & Heat Inc. owner John Sabo talks about how important it is to replace your air conditioners filters and shows you how.

    INSTALLATION

    When you depend on your AC to keep your home comfortable all through the hot Florida months, you cant afford to make the mistake of installing an AC the wrong way. We know that our customers throughout the Cocoa, Melbourne, and Brevard locations trust the expert technicians here at All Air & Heat to professionally install their ACs, ensuring no future problems extend from a poorly installed system.

    A correct installation of an AC system can save you both time and difficulty in the future. Its better to make sure the job gets done properly the first time, this way you can avoid having to call us after the last person you hired did a careless job. Having a bad installation done can result in:

    Malfunctions/Breakdowns Shorter unit lifespan Higher utility bills Expensive repairs

    [gmarker marker_latitude= marker_longitud= marker_label=][/gmarker]

    ABOVE MAP:All Air & Heat Inc., located at 3860 Curtis Boulevard in Port St. John, has been serving all of Brevard County with superior service for more than 20 years.

    REPAIR

    All Air & Heat provides the residents of Brevard County with repair services for of their AC systems.

    Theyrealize you rely upon your AC system to provide your house with that clean cool air that will keep you comfortable and happy even on the hottest of Florida days and nights.

    In theirtime working in Cocoa, Melbourne, and Brevard County, we have seen some of them of the most common causes of AC malfunctions, which includes:

    Inadequate maintenance: Bad maintenance can leave your AC weak and unable to work at the demand needed. This can cause your AC to have a complete breakdown, thereby requiring repairs. Sensor Problems: The Acs sensors can begin to malfunction if left unmaintained. Once they do, you will need repairs in order to have your system in full working order once more. Clogged Filters: If your filters havent been changed or clean recently, your AC could be on its way to breaking down and leaving you stranded in the heat.

    Any of these causes can lead to your AC system having a complete failure, and requiring you to need repairs. We make getting repairs for your system a simple task thats as stress-free as possible. We accept all major credit cards, and we also have financing options available for those who need it.

    All Air & Heat Inc. owner John Sabo talks about how important it is to replace your air conditioners filters and shows you how.

    MAINTENANCE

    AC maintenance may seem like a waste to some individuals, but it is actually one of the best ways to preserve your AC unit and keep it functioning properly for a longer time than one that receives no maintenance.

    All Air & Heat knows that the biggest problem ACs experience in Brevard County, and throughout Florida, is being overworked. Our baking temperatures mean that your AC has to work extra hard just to try and sustain a livable climate inside your home.

    AC Maintenance should be an important part of your home maintenance. As important as it is to make sure your roof is in top condition so you do not have leaks after our notorious rainstorms, its important to make sure your AC is in top working condition.

    Some benefits of AC maintenance include:

    Extended lifespan More efficient cooling Lower utility bills Being aware of potential problems before they appear

    CLICK HERE FOR MORE INFORMATION

    Click here to contribute your news or announcements Free

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    John Sabo of All Air & Heat Talks About Servicing Your A/C Now ... - SpaceCoastDaily.com

    Yes to School Budgets in Six Districts – East Hampton Star - May 17, 2017 by Mr HomeBuilder

    Two people signed in to vote at the Amagansett School on Tuesday afternoon. David E. Rattray

    School budget votes and board elections results have begun rolling in, with voters approving budgets in East Hampton, Amagansett, Montauk, Bridgehampton, Sagaponack, and Wainscott, whose polls all closed 8 p.m.

    Polls in Springs and Sag Harbor closed at 9 p.m.

    East Hampton

    The East Hampton School District's $68.3 million budget proposal, a slight increase over last year but still under the state's cap on tax levy increases, was approved by a vote of 291 to 53.

    Voters also approved, in a vote of 241 to 96, a proposition allowing East Hampton to establish a capital reserve fund for future districtwide improvements related to growing enrollment, property acquisition, and the replacement of technology and telecommunications equipment, infrastructure, and software. Spending for specific projects will be subject to voter approval.

    Jacqueline Lowey and John J. Ryan Sr., who were running uncontested to keep their seats on the school board, got 278 and 302 votes, respectively.

    Amagansett

    In Amagansett, where interest in the budget and the school board race intensified in the last week, voters approved the nearly $10.7 million budget for the 2017-18 school year. The budget was approved, 146 to 59.

    With three board seats available and only three candidates on the ballot, the race for school board was business as usual until last week, when two more candidates announced that they would mount write-in races.

    Patrick Bistrian III and Dawn Rana-Brophy were running to keep their seats, and Anna Bernasek was seeking a seat for the first time. Mary A. Eames and Claudia L. Quintana announced after a school board meeting last week that they, too, would like to take seats at the table.

    Mr. Bistrianand Ms. Quintana were the top two vote getters, with 122 and 115 votes, respectively. Each will get three-year terms on the board. The next highest vote getter, Ms. Rana-Brophy, got 111 votes and will serve for a one-year term.

    Voters also approved a proposition authorizing the expenditure of $400,000 from the 2015 renovations and upgrades capital reserve fund for a new gym ceiling. The vote was 179 to 25.

    Montauk

    There were no surprises in Montauk, where the $18.8 million budget for next year was approved by a vote of 115 to 8, and Kelly White, an incumbent running for her third five-year term, won it with 112 votes.

    The budget is down more than $155,000 from this year's.

    Bridgehampton

    Bridgehampton's $14.36 million budget sailed through with 102 voting for it and 74 voting no. The budget is up $578,024 over this year.

    On the Bridgehampton School Board, Kathleen McCleland, an incumbent, was returned to the board with 136 votes, and Markanthony Verzosa, a newcomer, received 116 votes to take the other seat. The races were not contested.

    Also approved Tuesday was a proposition allowing the district to redistribute the balance of a previously approved capital reserve fund to install and maintain a geothermal heating and cooling system as part of a planned school addition. Taxpayers will not incur any additional costs as a result. The vote was 84 to 41.

    Sagaponack

    Sagaponack voters unanimously passed the school's $1.7 million budget proposal, with 19 votes for and none against.

    Sagaponack voters also approved a one-year contract with East Hampton and Sag Harbor School Districts for instruction services for fourth through sixth grades. The district already has a five-year contract with both of these districts for 7th through 12th grades.

    Brian Villante, the school board president, was re-elected with 19 votes. There were no challengers.

    Wainscott

    The Wainscott School District's $2.95 million budget for the 2017-18 school year was approved with 31 votes in favor and none against. It is lower than this year's budget.

    David Eagan, the incumbent school board president, who ran unopposed, was re-elected with 29 votes. One vote was cast for someone else, and one ballot was left blank.

    View original post here:
    Yes to School Budgets in Six Districts - East Hampton Star

    Contractors Custom Build Their Most Efficient Ventilation Systems – ACHR NEWS - May 16, 2017 by Mr HomeBuilder

    There is not one universal blueprint when it comes to high-efficiency air movement and ventilation equipment in residential spaces. Energy recovery ventilators (ERVs); heat recovery ventilators (HRVs); blowers, and high-volume, low-speed (HVLS) fans are all important HVAC components that can deliver the high-end, highly efficient performance consumers are looking for.

    And these options are certainly in high demand.

    According to a recent report from Navigant Research, worldwide revenue from ERVs will nearly double from $1.6 billion in 2014 to $2.8 billion in 2020.

    Along with new standards and regulations, the heightened sensitivity to how the health and comfort of office workers affects productivity is driving increased acceptance of IAQ technologies in more buildings, said Benjamin Freas, research analyst with Navigant Research, per a release. ERVs are growing in popularity because they provide energy-saving benefits without sacrificing IAQ.

    Manufacturers consistently deliver new products in high-efficiency categories (as detailed on Page 12), so where do contractors even begin when they are deciphering the options available to them in the high-efficiency arena? Are there certain types of products that are essential? Or, is each situation truly unique?

    To try and tackle these questions head-on, members of The NEWS advisory board were presented with a simple prompt: If you were to design a high-efficiency movement/ventilation equipment system, what products would you choose for the job and why?

    Those with experience in this highly specialized area of HVAC answered in a variety of interesting ways.

    Rob Minnick, CEO and president of Minnicks Inc. in Laurel, Maryland, said he would choose a ductless system, an ERV with bath fans tied into it, and maybe a dehumidifier, if the job required it.

    [These options are] more efficient, offer more control for comfort, and there is no duct-loss outside of any ductless system that may have some ducts usually in the bedroom area, he said. The efficiency benefits of both an ERV and HRV are substantial.

    HRVs minimize energy loss by taking cooled or heated air and swapping it with exterior air. This process transfers some of the heat or coolness from the internal air to the air entering the space. The issues presented by ERVs and HRVs are often the fact that not all contractors have the knowledge to install them. They can require a great degree of maintenance but when installed and maintained properly, they provide honest value to homeowners.

    I often receive similar questions from customers asking what I installed in my house and why, said Travis Smith, owner, Sky Heating and Cooling, Portland, Oregon. Well, when I custom built my house last year, my first priority was my HVAC system. My 3,500-square-foot home in Portland, Oregon, has a WaterFurnace Intl. Inc. 3-ton variable capacity geothermal system with variable-speed pumps and four zones. The system has an air scrubber, Trane CleanEffects whole-house air-filtration system, and a Lifebreath 155ECM HRV for ventilation since the home was very well sealed. The ductwork was sealed with Aeroseal LLC duct-sealing equipment that gave us less than a 10-cfm leakage on the ductwork. We have a WaterFurnace NSW025 geothermal water heating system to provide hot water and a Mitsubishi Electric FH15 ductless system to heat, cool, and dehumidify the garage since its a below-ground garage.

    Smiths second home is smaller, at 2,100 square feet, so he didnt go with a geothermal system but still wanted a high-efficiency system in place.

    This home has a 2-ton Trane XV18 variable capacity air conditioner with a S9V2 dual-stage gas furnace and a two-zone Trane system. Because this home is in the high desert, we have an Aprilaire steam humidifier and plan on adding a Navien Inc. tankless combi-boiler and a radiant floor for the lower floor of the home. We will also be aerosealing the ductwork soon, but we bought this house and did not custom build it.

    When considering high-efficiency options, Russ Donnici, president of Mechanical Air Service Inc. in San Jose, California, believes that equipment selection, as long as it meets the projects requirements, is actually less important than duct sizing and installation quality.

    A high-efficiency system has to produce measurable high-efficiency results and be quiet, he said. Branch duct sizing should be 0.07 inch to 0.09 inch of static. In addition, register selection is important since not all registers of the same size have the same net free open area. We select registers for NC [noise criteria] 20-25 rating.

    The California Energy Commission requires testing of duct systems to be sure their leakage is 6 percent or less of the systems airflow capacity, so Donnici said his company seals and tests to 3 percent, so they know they are delivering the proper airflow.

    We are a Bryant dealer and use the companys variable-speed condensing furnaces and fan coils, he said. In special cases, we may use some Trane commercial equipment or build up a system we design for high efficiency that may need to overcome the pressure drop of high-efficiency particulate air [HEPA] filters. Typically, we would use a Greenheck fan or a similar fan depending on the total external static pressure [TESP] of the system.

    Rich Morgan, president, Magic Touch Mechanical Inc., Mesa, Arizona, said his company does quite a bit of work on the home-performance side of the business, and because of that experience, the companys efficiency improvements often include air sealing and other measures that tighten up a homes envelope.

    This often means adding a means of mechanical ventilation, said Morgan. We typically opt for an HRV in these scenarios. Most often, we specify the Lennox Intl. Inc. Healthy Climate HRV as weve found them to be reliable, easy to install, and homeowners are both familiar and comfortable with the brand.

    Publication date: 5/15/2017

    Want more HVAC industry news and information? Join The NEWS on Facebook, Twitter, and LinkedIn today!

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    Contractors Custom Build Their Most Efficient Ventilation Systems - ACHR NEWS

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