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Wrong - Insulation was not sliced to wrap around wiring.

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Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes.

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Right – Spray foam completely fills the wall cavities, providing a thorough layer of insulation behind electrical boxes.

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Wrong - HVAC duct and flue are too close to wall and will be difficult to properly air seal and insulate around when ceiling is installed.

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Right – Walls, windows, and wiring are installed in the factory for these modular homes, which are installed at the site on basement foundations made of insulated concrete wall panels.

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Above the 20 inches of blown cellulose ultra-efficient attic insulation, Near Zero Maine installed a walkway in the attic to provide easy access to electric wiring.

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This IR camera image shows a cold spot (in purple) at an electrical outlet on an exterior wall due to lack of insulation; some streaking is also visible and indicates air leakage.

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Technology Solutions Case Study: Preventing Thermal Bypass

Case Study

Case study describing techniques used to prevent thermal bypass in new homes.

Mineral wool batts are precisely cut to fit around electrical boxes in the wall cavities, preventing cold spots in walls.

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Pre-Retrofit Assessment of Crawlspaces and Basements

Information Guide

Information guide describing things to consider when considering home retrofits in the basement or crawlspace including HVAC, wiring, or structural systems.

DOE ZERH HIA 2014 Case Study: One Sky Homes, Cottle Zero Net Energy Home, San Jose, CA

Case Study

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 69 without PV and -1 with PV.

New Whole-House Solutions Case Study: Lancaster County Career and Technology Center Green Home 3 - Mount Joy, Pennsylvania

Case Study

Case study describing the Green Home 3 project, which achieved a 44% whole-house energy savings over the Building America New Construction B10 Benchmark, DOE Zero Energy Ready Home certification, and National Green Building Standard Gold-level certification.

DOE ZERH HIA 2014 Case Study: M Street Homes, Smartlux on Greenpark Houston, TX

Case Study

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 45 without PV and 32 with PV and is the first home in the world to use a tri-generation system to supply electricity, heating, and cooling on site.

Wrong - Insulation was not sliced to wrap around wiring.

Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes.

Right – Spray foam completely fills the wall cavities, providing a thorough layer of insulation behind electrical boxes.

Wrong - HVAC duct and flue are too close to wall and will be difficult to properly air seal and insulate around when ceiling is installed.

Right – Walls, windows, and wiring are installed in the factory for these modular homes, which are installed at the site on basement foundations made of insulated concrete wall panels.

Above the 20 inches of blown cellulose ultra-efficient attic insulation, Near Zero Maine installed a walkway in the attic to provide easy access to electric wiring.

This IR camera image shows a cold spot (in purple) at an electrical outlet on an exterior wall due to lack of insulation; some streaking is also visible and indicates air leakage.

Technology Solutions Case Study: Preventing Thermal Bypass

Mineral wool batts are precisely cut to fit around electrical boxes in the wall cavities, preventing cold spots in walls.

Pre-Retrofit Assessment of Crawlspaces and Basements

DOE ZERH HIA 2014 Case Study: One Sky Homes, Cottle Zero Net Energy Home, San Jose, CA

New Whole-House Solutions Case Study: Lancaster County Career and Technology Center Green Home 3 - Mount Joy, Pennsylvania

DOE ZERH HIA 2014 Case Study: M Street Homes, Smartlux on Greenpark Houston, TX

New Whole-House Solutions Case Study: Nelson Construction: Hamilton Way, Farmington, CT

Air Sealing Electrical Wiring

Wiring Conduit for Solar PV Systems