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HVAC Parts Every Homeowner Should Know

Your HVAC system works hard to keep you comfortable all year round. But do you know the components that make it tick? Familiarizing yourself with them can help you take care of your system better.

Here are the HVAC parts that all homeowners should know:

Thermostat —

This is the HVAC part that you interact with the most. It monitors your home’s temperature and signals your furnace or air conditioner to turn on or off to maintain your desired temperature. If you’re using a manual thermostat, you should upgrade to a programmable model to make automatic temperature adjustments and save energy.

HVAC Filter —

This is another component of your HVAC system that you should be interacting with regularly. It’s designed to capture dust, dirt, and other foreign particles entering your system, helping protect interior components from damage. Replace your filter every month to ensure peak HVAC efficiency.

Condensing Unit —

This is the unit that sits outside your home. It’s responsible for condensing and cooling the special refrigerant gas, which then flows into the evaporator coil to cool your home’s air during the summer. Throughout the year, you should clear away any fallen leaves, dirt, and other debris around it, as these will diminish its efficiency on warm days.

Evaporator Coil —

This component is located inside your home. It contains cold refrigerant that extracts both moisture and heat from the indoor air, generating cold air to cool your house.

Ducts —

These run throughout your home and distribute heated or cooled air. Leaking ductwork can cause significant energy loss. You can avoid that by having the ducts professionally sealed.

Air Vents —

They simply allow hot or cold air to exit your ducts and enter your rooms. Make sure they’re not blocked by any obstructions such as rugs, drapes, and furniture.


By having basic knowledge of the important HVAC parts, you’ll understand energy usage better, diagnose problems more easily, and communicate more effectively with your HVAC contractor. If you need HVAC services in the San Antonio area, contact Beyer Boys. We have the tools and know-how to address all your HVAC needs.

Our goal is to help educate our customers in the greater San Antonio, Texas area about energy and home comfort issues (specific to HVAC systems).