HVAC Glossary

Common Residential HVAC System Terms and Definitions

Heating, ventilation and air conditioning (HVAC) terminology can be confusing – and for good reason. With a variety of acronyms and an abundance of industry-specific language, it can feel overwhelming. But this guide to common residential HVAC terms will help you understand what many of those numbers and phrases actually mean.

Residential HVAC System Equipment

Unit Components

Efficiency Ratings/Measurement

Other Common HVAC Terms


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