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Cold/Very Cold

This Building America Optimized Solution describes a set of building practices necessary to achieve the next step in energy performance for new homes (approximately 30% energy savings above the B10 Benchmark - roughly consistent with the 2009 International Energy Conservation Code).   This package of measures meets and exceeds DOE’s Zero Energy Ready Home (ZERH) program requirements and was selected for its performance in the following areas:

  • Energy Savings
  • Affordability
  • Buildability
  • Durability
  • Healthy Indoor Environment

The high performance builders profiled in the case studies found below the interactive box show just a few examples of the hundreds of ways a builder can meet the premium levels of energy savings Building America strives for, while qualifying for the ZERH.  Print the Optimized Solution for the Cold Climate.

Cold/Very Cold Energy Savings
Measure Performance Options
High-R Ceiling

R-49

High-R Walls

R-20 Cavity and R-10 Continuous

High-R Foundation

R-15 Continuous or R-19 Cavity (Basement)

High-R Window

U≤0.27 (R≥3.7), SHGC≥0.46

Air Tightness

ACH50≤2

Measure Performance Options
Water Heating

EF 0.8

Lighting

ENERGY STAR

Appliances

ENERGY STAR

Exhaust Fans

ENERGY STAR

Ceiling Fans

ENERGY STAR

Case Studies

Author(s): PNNL
Organization(s): PNNL
Publication Date: April, 2013

Case study of a DOE Zero Energy Ready Home in Old Greenwich CT, that scored HERS 42 without PV or HERS 20 with PV. This 2,700 ft2 custom home has advanced framed walls with R-24 blown cellulose plus R-7.5 EPS rigid foam, membrane-coated OSB, a close-cell spray foamed attic, R-13 closed-cell spray foam under the slab and on basement walls, an ERV, and a gas boiler for forced air and radiant floor heat.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Devens MA that scored HERS 34 without PV or HERS -21 with PV. This 3,168 ft2 custom home has R-46 double-stud walls, a vented attic with R-67 blown cellulose, plus R-10 rigid XPS under the slab, R-20 closed-cell spray foam on basement walls, triple-pane windows, and mini-split ductless heat pumps.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study of a DOE Zero Energy Ready Home in Herriman, UT, that scored HERS 40 without PV, -1 with PV. This 4,111 ft2 production home has R-23 advanced framed walls, and a vented attic with R-60 blown fiberglass.

Author(s): PNNL
Organization(s): PNNL
Publication Date: September, 2013

Case study about a DOE 2014 Housing Innovation Award winner.