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Serving Northern Virginia

703-628-8200

Heating, Air Conditioning and Plumbing Services in Northern Virginia
How Your HVAC System Works

How your HVAC system works

Your air conditioning system keeps your home comfortable year round. Knowing how it works can help you have an even better indoor air quality by knowing what's going on and what it may need in the way of maintenance.

The Outside Air Conditioning Unit 

The outside unit contains a compressor and a condenser coil. The compressor pumps refrigerant to an evaporator coil within the inside unit where the air will blow over it for cooling. The refrigerant evaporates in the evaporator coil and draws heat out of the house as it is pumped back to the outside unit.The heat is released by running the evaporated refrigerant through the condensor coils in the outside unit.  The refrigerant returns to liquid form in the compressor and is pumped back to the inside unit to continue the cycle.

The Interior Unit and Furnace

The heating system is usually an interior furnace that can either be gas or electric. Air is drawn into the HVAC system through your return air vents. The air is heated by the furnace coils and pushed out through the ducts to heat the home. The furnace relies on the thermostat setting to determine when to turn on and off based on the temperature in the room.

The duct work

The duct system in your home is designed to insulate the air traveling through and to deliver the correct amount of flow based on the diameter of the duct and the size of the vent. Ductrwork has changed a great deal in the last 20 years. Higher efficiency, easier maintenance, and longer lasting duct systems are available today. If your duct system is old, it could be loosing air and costing your money. If you need yours checked, please call us at (703) 628–8200.

The air conditioning filter

The filter is a very important part of your HVAC system and it should be changed once a month. Modern filters are very good however they can be pricey. The advanatages typically outweigh the costs and an improved filtering system can add years of life to your system while keeping your indoor air cleaner. The filter simply removes contaminates and dust from the air being broughh into the AC system. Dust, dirt and other debris can cause damage over time. Maintaining your HVAC sytem is important and can save you a great deal of money and it all starts with consistently changing your filter.

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