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HVAC Glossary

Common HVAC terms in one convienent place.
Look up definitions to make learning fast and easy.

AHRI Certification

HVAC Certification

AHRI is the Air Conditioning, Heating, and Refrigeration Institute. AHRI is a trade association that represents HVAC equipment manufacturers as well as manufacturers of water heating and commercial refrigeration equipment.

Air Purifier

Air Quality

An HVAC air purifier is an air cleaning unit that connects to your home’s HVAC system. Also known as an air cleaner, air purification systems vastly improve your indoor air quality.

Air Conditioner

Air Conditioner

Air conditioners remove heat and humidity from the air in your home and place it outside to reach your desired indoor temperature. Central AC cools your entire home, while ductless AC cools just one portion or room in your home.

Air Filter

Indoor Air Quality

Air filters are installed in HVAC systems to remove dust, dander, allergens, and other harmful particles from the air in your home. You can change and maintain air filters on your own.

ASHRAE Certification

HVAC Certification

ASHRAE certifications are credentials earned by professionals who have demonstrated their expertise and knowledge in heating, ventilation, cooling, or refrigeration. Sponsored by the American Society of Heating, Refrigerating, and Air Conditioning Engineers.

Air Handler

Air Handler

Air handlers circulate air throughout your home to maintain your desired temperature. They’re typically found inside the home and paired with a heat pump.


Energy Efficiency

Annual Fuel Utilization Efficiency (AFUE) measures how efficiently a furnace converts fuel to energy. The higher the AFUE rating, the more efficient the furnace.

Getting Started Guide

Learn helpful HVAC tips and tricks before you purchase your system.


Learning resources to help current and future owners understand the world of HVAC.

Repair or Replace

If something goes wrong with your system,we can help determine if repair or replacement is the best option for you.

Contact a local dealer

Dealers can answer questions, help you find the right products for your home, and repair your system.

We’re here to help

Connect with our Customer Care team about your products, warranties, and dealer concerns.

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