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Mixed-Humid

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 Mixed-Humid Climate.

Mixed-Humid Energy Savings
Measure Performance Options
High-R Ceiling

R-38

High-R Walls

R-20 Cavity and R-10 Continuous

High-R Foundation

R-13 Cavity or R-5 Continuous (Crawlspace)

High-R Window

U≤0.3 (R≥3.3), SHGC≤0.27

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: September, 2013

Case study of a DOE Zero Energy Ready in Long Island, NY, that scored HERS 43 without PV. This 5,088 ft2 custom home has R-25 double-stud walls, a vaulted roof with R-40 blown cellulose, R-10 XPS under slab, a hydro air system with 91% efficient boiler for forced air and radiant floor heat, and 100% LED lights.

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

Case study about a DOE Zero Energy Ready Home in Frederick MD that scored HERS 43 without PV, HERS 28 with PV. This 4,516 ft2 custom home comes standard with a geothermal heat pump, SIP walls, spray-foamed unvented roof, and ERV.

Author(s): PNNL
Organization(s): PNNL
Publication Date: April, 2014

Case study describing the first DOE Zero Energy Ready Home in Georgia that achieved a HERS score of 40 without PV and -10 with PV.