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Ducts in Dropped Ceilings

Guide describing method for installing ducts in a duct chase above a dropped ceiling.

Air Sealing Duct and Flue Shafts

Guide describing how to air-seal duct and flue shafts.

Install wood framing cross pieces in the attic rafter bays on each side of the duct chase

Install wood framing cross pieces in the attic rafter bays on each side of the duct chase

Install wood framing cross pieces in the attic rafter bays on each side of the duct chase

Batt Insulation for Existing Vented Attics

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

Wrong: open wall cavity connected to this return air plenum is allowing cellulose attic insulation to be pulled into the furnace

Wrong: open wall cavity connected to this return air plenum is allowing cellulose attic insulation to be pulled into the furnace

Publication Date

Sun, 06/01/2014 - 12:00

Air Sealing Bathroom and Kitchen Exhaust Fans

Guide describing how to air-seal bathroom and kitchen exhaust fans.

Builders Challenge High Performance Builder Spotlight: David Weekley Homes, Houston, Texas

Author(s)

Pacific Northwest National Laboratory

Organization(s)

PNNL

Publication Date

December, 2009

Case study describing new home construction in the hot-humid climate, optimizing thermal enclosure, HVAC, water heating and lighting measures.

Form a sheet metal shield around the flue pipe

Form sheet metal shield around pipe keeping 3-inch clearance

New Whole-House Solutions Case Study: Insight Homes: Deep Creek, Seaford, Delaware

Author(s)

Pacific Northwest National Laboratory

Organization(s)

PNNL

Publication Date

April, 2012

Case study describing a home builder that has refined its home designs to achieve HERS scores of 49 to 56 on 40 to 70 homes per year.

Existing Whole-House Solutions Case Study: Deep Energy Retrofit in the Pacific Northwest

Author(s)

Pacific Northwest National Laboratory

Organization(s)

PNNL

Publication Date

December, 2011

Case study describing a whole-house, deep energy retrofit project in the marine climate.

New Whole-House Solutions Case Study: Tom Walsh & Co., New Columbia, Portland, OR

Author(s)

Pacific Northwest National Laboratory

Organization(s)

PNNL

Publication Date

February, 2013

Case study describing a new construction building project of 20 homes that earned HERS scores that represent greater than 50% energy savings in heating and cooling over the 2004 IECC.

Dropped Ceiling/Soffit Below Unconditioned Attic

Guide describing how to insulate and air-seal dropped ceilings and soffits to prevent air leakage.

Install Top Plates or Blocking at the Top of Walls Adjoining Unconditioned Spaces

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.