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Basic components of a gas tankless water heater include a high-powered burner, fan, and heat exchanger; condensing gas water heaters also have a secondary heat exchanger and a piped air intake to the sealed combustion chamber

Basic components of a gas tankless water heater include a high-powered burner, fan, and heat exchanger; condensing gas water heaters also have a secondary heat exchanger and a piped air intake to the sealed combustion chamber
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Batt insulation is not an effective air barrier

Batt insulation is not an effective air barrier
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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
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Because heat pump clothes dryers recycle the hot air in the drum rather than venting it, they use 70% less energy than conventional electric clothes dryers while drying clothes in the same amount of time

Because heat pump clothes dryers recycle the hot air in the drum rather than venting it, they use 70% less energy than conventional electric clothes dryers while drying clothes in the same amount of time
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Blocking is installed above the refrigerator to keep it from tipping forward.

Blocking is installed above the refrigerator to keep it from tipping forward.
Case Study:

Builders Challenge Technology Information Packages - Cold Climate: Chicago

Case Study:

Building America Case Study Technology Solutions for Existing Homes: Bedford Farmhouse High Performance Retrofit Prototype

Case Study:

Building America Case Study: Simplified Air Distribution, Desuperheaters, and Sub-Slab Geothermal Heat Exchangers

Case Study:

Building America Efficient Solutions for New Homes: Case Study: Concord Cape Prototype

Case Study:

Building America Existing Home Case Study: Insulated Siding Retrofit in a Cold Climate, New Paltz, New York

Case Study:

Building America Top Innovations 2013: Community Scale High-Performance with Solar: Pulte Homes, Tucson, AZ

Presentation:

Building Code Training - Residential Thermal Envelope - Air Sealing

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Building Enclosure: Exterior House Wrap Installation

Presentation:

Building Science for Dry Climates 3 - Combustion Safety

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Cap nail securing a weather-resistant barrier

Cap nail securing a weather-resistant barrier
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Category III oil-fired, sealed-combustion boiler configured as a direct-vented appliance that draws its combustion air from outside

Category III oil-fired, sealed-combustion boiler configured as a direct-vented appliance that draws its combustion air from outside
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CCHRC Solar Thermal

Video:

CCHRC: Combustion Safety Test

Presentation:

Certified Insulated Siding: Quality, Comfort and Energy Performance

Certified Insulated Siding: Quality, Comfort and Energy Performance
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Closed-cell foam is sprayed into roof cavities along the masonry parapet wall to form a continuous air barrier between the wall and the sheathing of the flat roof

Closed-cell foam is sprayed into roof cavities along the masonry parapet wall to form a continuous air barrier between the wall and the sheathing of the flat roof
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Closed-cell spray foam fills the roof joist cavities forming an air barrier between the masonry parapet wall and the roof sheathing

Closed-cell spray foam fills the roof joist cavities forming an air barrier between the masonry parapet wall and the roof sheathing
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Clothes dryers vented directly to outdoors, except for ventless dryers equipped with a condensate drain

Clothes dryers vented directly to outdoors, except for ventless dryers equipped with a condensate drain
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Combustion safety testing using a smoke pen

Combustion safety testing using a smoke pen
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Compare gas tankless water heater efficiencies on the Energy Guide labels or look for the ENERGY STAR label

Compare gas tankless water heater efficiencies on the Energy Guide labels or look for the ENERGY STAR label