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An innovative U-shaped heat pump offers SEER 15 efficiency and operation with smart phones

An innovative U-shaped heat pump offers SEER 15 efficiency and operation with smart phones
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An NFRC glazing system energy performance label will report U-factor, solar heat gain coefficient, visible transmittance, and air leakage; if the window is ENERGY certified, the ENERGY STAR label will be located next to the NFRC label

An NFRC glazing system energy performance label will report U-factor, solar heat gain coefficient, visible transmittance, and air leakage; if the window is ENERGY certified, the ENERGY STAR label will be located next to the NFRC label
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An oil-fired boiler with direct combustion air and exhaust venting

An oil-fired boiler with direct combustion air and exhaust venting
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Anode bars can protect boiler steel without the bad effects of chemical water treatment

Anode bars can protect boiler steel without the bad effects of chemical water treatment
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Assembled section of fiber board duct

Assembled section of fiber board duct
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At the outlet of the dryer exhaust duct, install a hooded vent with a louvered damper

At the outlet of the dryer exhaust duct, install a hooded vent with a louvered damper
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Average wet-bulb temperatures across the United States

Average wet-bulb temperatures across the United States
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Back-draft damper still has a piece of tape that prevented it from rattling during shipping

Back-draft damper still has a piece of tape that prevented it from rattling during shipping
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Baffles are installed to protect airflow from the soffits to the ridge vents before the ceiling drywall and attic insulation are installed.

Baffles are installed to protect airflow from the soffits to the ridge vents before the ceiling drywall and attic insulation are installed.
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Balanced ventilation dominates ventilation specifications by Zero Energy Ready Home builders

Balanced ventilation dominates ventilation specifications by Zero Energy Ready Home builders
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Balanced ventilation strategy for conditioned attic spaces

Balanced ventilation strategy for conditioned attic spaces
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Bathrooms should be equipped with an exhaust fan that vents directly outdoors

Bathrooms should be equipped with an exhaust fan that vents directly outdoors
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Batt insulation should be cut to fit around wiring so that insulation can completely fill the wall cavity

Batt insulation should be cut to fit around wiring so that insulation can completely fill the wall cavity
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Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC

Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC
Case Study:

Bedford Farmhouse High Performance Retrofit Prototype

Bedford Farmhouse High Performance Retrofit Prototype
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Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa

Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
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Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa

Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
Case Study:

Best Practices Case Study: S&A Homes, East Liberty, PIttsburgh, PA

Best Practices Case Study: S&A Homes, East Liberty, PIttsburgh, PA
Case Study:

Best Practices Case Study: Shaw Construction Burlingame Ranch Ph.1, Aspen, CO

Best Practices Case Study: Shaw Construction Burlingame Ranch Ph.1, Aspen, CO
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Block off registers before installing spray sealant in HVAC ducts

Block off registers before installing spray sealant in HVAC ducts
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Blown cellulose insulation completely fills the netted wall and ceiling cavities.

Blown cellulose insulation completely fills the netted wall and ceiling cavities.
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Blown fiberglass insulation fills netted wall cavities

Blown fiberglass insulation fills netted wall cavities
Case Study:

Blue Sea Construction: Affordable Housing Case Study

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Boilers can provide zoned heating with parallel piping loops

Boilers can provide zoned heating with parallel piping loops