Well maintained vents in Ashburn VA building that gets quality HVAC inspection

A Guide To Your HVAC System

“HVAC” stands for heating, ventilation, and air conditioning, and an HVAC system is what heats and cools your home. During cold seasons, you rely on the furnace portion of your HVAC system. And during warmer months, you rely on the AC. But to keep both systems running, invest in a professional HVAC inspection service that checks all their basic parts. 

RA Dobson offers the best repairs, installations, and inspection services for HVAC systems in the area. We can help you save 60% on your energy bills with our highly efficient systems. Residents of Ashburn, VA, and the surrounding area trust our HVAC inspections and other services

Below, we explore the 8 basic parts of a typical HVAC system:

1. Thermostat

You can think of the thermostat as the “brain” of your HVAC system. It contains a thermometer that gauges the system’s running temperature against your home’s interior temperature. To match the two, the system turns on the furnace or air conditioner so that your home reaches the desired temperature.

2. Furnace and Blower Motor

Next is the furnace, a relatively large unit distinct from the AC that demands its own space in the basement, attic, or closet. A fuel source – such as natural gas, oil, or electricity – heats the air that comes into it. Then, an attached blower motor distributes the air through ducts to the rest of the house. The motor also pulls in cool air from the house to start the process over again.

3. Heat Exchanger

A heat exchanger is a device that transfers heat from one medium to another. If your furnace uses oil or gas, burners accomplish the heating. If it runs on electricity, electric coils heat the air. As the heat exchanger warms up the air, heat transfers to the metal walls. The air heats up quickly and then is distributed throughout the home. 

4. Evaporator Coil

An evaporator coil is the internal portion of a split-system air conditioner. It absorbs heat from the air in your house so that only cool air remains.

5. Condensing Unit

The condensing unit is a big metal unit that sits outside your house and expels the heat from the interior to the exterior.

6. Refrigerant Lines

Refrigerant lines make air conditioning possible. Made of copper and aluminum, and run between the condensing unit and evaporator coil. They are responsible for carrying the refrigerant between the condensing unit and the evaporator coil.

7. Ductwork

Ductwork includes all the metal passages that deliver and move the air. They should be sealed and insulated to prevent major temperature shifts. 

8. Return and Supply Registers

These are covers that fit over the ductwork ends. They allow air out of and into the HVAC system. They are typically located on the ceiling, walls, and floors depending on the ductwork layout. 

HVAC Inspection Now Available in Ashburn, VA

HVAC systems are the foundation of your home’s air quality and comfortability, yet they contain a lot of nuances and parts. So, let the RA Dobson team help you manage your HVAC system with an HVAC inspection service. Our employees are well trained and knowledgeable about HVAC systems and can help you to keep them working properly. We offer the latest energy-efficient systems in heating and air conditioning. Contact us today for an inspection and receive a free estimate or call us at (703) 481-3700 for more information on how we can help you feel comfortable in your home.

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