InterNACHI HEA case studies
InterNACHI HEA · Put your knowledge to work in context.
The InterNACHI Home Energy Auditor (HEA) certification is a specialty credential offered within the InterNACHI® (International Association of Certified Home Inspectors) education and certification ecosystem. It is aimed at home inspectors, energy assessors, weatherization technicians, and contractors who want to demonstrate competence in evaluating a home's energy performance rather than only its physical condition. The InterNACHI HEA case studies are 5 cases and about 4,466 words.
1Ice Dams on a 1978 Split-Level: The $2,400 Insulation Quote
1978 split-level, 1,900 sq ft conditioned space, Minneapolis. Attic over the main level: R-19 kraft-faced batts between 2x6 ceiling joists, soffit and ridge vents, no baffles at the eaves.
823 words, about 4 min2Duct Leakage to Outside in a Vented Attic: Seal It or Replace It?
Single-story 1,500 sq ft ranch, slab-on-grade, 8-ft ceilings, built 1986, mixed-humid climate. The 2.5-ton split heat pump has its air handler on a panned platform in a vented attic; eight R-4 flex supply runs and one central return cross 128°F attic air.
903 words, about 5 min3Worst-Case Depressurization and Spillage in a Townhouse Mechanical Closet
1,250 sq ft two-story townhouse, built 1994, Minneapolis. A 100,000 Btu/h atmospheric-draft furnace (80% AFUE) and a 40,000 Btu/h atmospheric water heater share a first-floor closet with a louvered bi-fold door and vent into one shared 6-in.
914 words, about 5 min422,000 kWh, a Pool Pump, and a Homeowner Who Wants Solar First
2,600 sq ft two-story, built 2006, Charlotte NC. Equipment: 3-ton 13 SEER heat pump with 15 kW electric strip, electric 50-gal tank, and a 1.5 kW single-speed pool pump running 8 hours a day.
901 words, about 5 min5A Rebate the House Does Not Qualify For, and a Mold Claim It Cannot Support
You audit for a contractor that participates in a utility rebate program. The 1955 Cape Cod has R-49 blown attic insulation, insulated walls, a 92% AFUE furnace with a clean combustion test, a 2,600 CFM50 blower door, and duct leakage to outside at 8% of system airflow.
925 words, about 5 min