Glossary of Terms

Confused by the jargon used by contractors, manufacturers, agents, program, lenders, appraisers, and others? Look here!

• Low Emissivity (Low E)
• U-Factor
• Uniform Energy Factor (UEF) and Energy Factor (EF)
• Defensible Space
• R-Value
• HSPF and HSPF2
• SEER and SEER2
• Air Conditioner (AC)
• Solar Heat Gain Coefficient (SHGC)
• Heating, Ventilation, and Air Conditioning (HVAC)
• Home Hardening
• ACH@50
• Shelter-In-Place
• Energy Recovery Ventilators (ERVs) and Heat Recovery Ventilators (HRVs)
• MERV
• Blower Door Test
• Passive Survivability
• AFUE: Annual Fuel Utilization Efficiency
• Class-A Fire Rated Materials
• Active Survivability
• Demand Energy Rate Management (DERM), Advanced Metering Infrastructure (AMI), and Distributed Energy Resources (DER)