Do you need heating or cooling services in the Portland or Vancouver area? Kova Heating & Cooling is your trusted HVAC partner. Call us today at (360) 823-3111 for expert help!

Understanding HVAC terminology can be a game-changer when you’re trying to make informed decisions about your home’s comfort system. Whether you’re upgrading your AC, comparing heat pump options, or simply scheduling maintenance, knowing the right terms can help you communicate better with your HVAC technician and feel more confident in your investment.

We’ve put together a simple glossary of the most common HVAC terms every Portland and Vancouver homeowner should know. Let’s break them down.

Essential HVAC Terms to Know

Air Conditioner
A device that removes heat and moisture from the indoor air to provide cooling. It can come in various forms, such as window units, split systems, or central systems.

Air Handler
The indoor component of your HVAC system. It moves conditioned air throughout your ductwork and typically contains a blower and heating or cooling elements.

BTU (British Thermal Unit)
A measurement of heat energy. The higher the BTU rating, the greater the heating or cooling capacity of your system.

Central Air Conditioning
A whole-home cooling system that distributes cold air through ducts and registers in each room. It’s ideal for larger homes and consistent cooling.

Coils (Evaporator & Condenser)
Evaporator coils absorb heat from indoor air; condenser coils release it outside. Both are essential for the refrigeration cycle in cooling systems.

Compressor
Often referred to as the heart of an AC or heat pump, the compressor circulates refrigerant and facilitates heat transfer.

Condenser Unit
Located outdoors, this component releases heat absorbed indoors. It’s part of both central air and heat pump systems.

Dehumidifier
A device that removes excess moisture from the air, helping with indoor comfort and mold prevention.

Ductwork
A network of metal or flexible tubing that carries heated or cooled air throughout your home. Keeping it clean and sealed is crucial for efficiency.

EER (Energy Efficiency Ratio)
This rating measures how efficiently a cooling system operates at peak conditions. A higher EER means better performance and energy savings.

Heat Gain
The amount of heat that enters your home from the outdoors, appliances, or sunlight.

Heat Loss
The amount of indoor heat that escapes, especially through poorly insulated areas.

Heat Pump
A versatile system that heats your home in the winter and cools it in the summer by transferring heat rather than generating it.

Humidifier
A device that adds moisture to dry indoor air. It’s especially helpful during colder months to prevent dry skin and respiratory discomfort.

HVAC
Stands for Heating, Ventilation, and Air Conditioning. It refers to the entire system that controls your indoor environment.

Programmable Thermostat
A thermostat that allows you to set different temperatures at different times of the day. It helps reduce energy use and enhance comfort.

Refrigerant
The chemical substance used in ACs and heat pumps to absorb and release heat. R-410A is a common modern refrigerant, replacing the phased-out R-22.

SEER (Seasonal Energy Efficiency Ratio)
This rating evaluates the overall energy efficiency of an air conditioner during a typical cooling season. Higher SEER = lower energy costs.

Split System
A traditional HVAC setup with separate indoor and outdoor units. It’s common in homes with existing ductwork.

Ventilation
The process of exchanging indoor and outdoor air to maintain air quality and regulate temperature and humidity.

Zoning
A system design that allows different areas (zones) of your home to be heated or cooled independently, improving comfort and efficiency.

Ready for Expert HVAC Help in Portland or Vancouver?

Now that you’ve got a handle on key HVAC terms, trust Kova Heating & Cooling to handle all your comfort needs. Whether you’re upgrading your furnace, installing a new heat pump, or fixing your AC, our certified technicians are ready to help.

📞 Call (360) 823-3111 to schedule your HVAC service in Portland or Vancouver today!