Cleveland HVAC Blog

Closing Air Vents to Control Airflow? It May Not Help Home Efficiency

Posted by Paul Wadsworth on Mon, Nov 18, 2013 @ 04:22 PM

Closing air vents can seem like a good way to keep heat from your furnace from being wasted on rooms in your home that aren't occupied, but this usually isn't an effective energy efficiency strategy to employ. In most cases, closing air vents creates a number of other problems that will actually cost you more in the long run.

air vents faqsSome homeowners may think that by closing the air vents in one room, more conditioned air will come out in other rooms, but that's not necessarily the case. The ductwork attached to the closed registers experiences high air pressures, which can cause the heated air to be wasted through any air leaks that are present.

The lack of air coming into the room also causes problems for the return vents. Since their usual source of return air is now absent, the air to return must come from somewhere else. This means return vents are more likely to suck in cold outer air from any leaks that are present. They also cause the pressure in the room to become unbalanced, which can lead to cold exterior air being pulled into the home.

Closing air vents can also make your furnace less efficient.

Furnaces rely on the air handler to provide adequate airflow for efficient operation, and when registers are closed, your air handler may struggle to do this. In severe cases, this can actually lead to damage to your furnace and other components in your home comfort system.

You should be able to reduce the amount of heat that's sent to unused rooms somewhat by partially closing the vents instead of completely shutting them, but if you need additional control, you may want to talk to an HVAC professional about other options, such as zoning systems.

For more information about closing air vents, or for professional advice on increasing the energy efficiency and comfort of your Cleveland home, contact P.K. Wadsworth Heating & Cooling. We're proud to serve the HVAC needs of the greater Cleveland area.


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Paul WadsworthPaul Wadsworth is the President and Owner of P.K. Wadsworth Heating and Cooling. For 37 years, Paul has been providing heating and cooling services to the Greater Cleveland area. P.K. Wadsworth has been a trusted Cleveland HVAC service company for over 75 years. The company understand the area's construction and local heating and air conditioning needs. Paul has an MBA from the University of Michigan and a B.S., Industrial Engineering from Purdue University. Paul is the Chairman of COSE's Energy Advisory Council. He's been President of the Cleveland Air Conditioning Contractors of America and a founding member of the local chapter. Paul was born and raised in Cleveland and has been active in the local community. He resides in Cleveland, Ohio with his wife and two sons.

The opinions and statements contained in this article are for general informational purposes only and are not instructions. Only trained, licensed and experienced personnel should attempt installation/repair. The author assumes no liability for the opinions/statements made in this article. Any individual attempting a repair or installation based on this article does so at their own risk of loss.

Topics: Cleveland Home Comfort, ductwork, air leaks, air vents, closing air vents

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