What Happens When You Close Vents in Unused Rooms?

Many people have rooms in their home that aren’t used much. In order to lower heating and cooling costs, they close the vents in those rooms and then close the doors. Unfortunately, this usually doesn’t work as you’d expect, and it can actually end up costing you more in the end.

Closing Vents Often Causes Inefficient Operation

An HVAC system doesn’t detect how much cooled or heated air a home needs. Instead, when W A Air Conditioning installs a system for one of our customers in Trinity, we calibrate it based on pressure. That’s what dictates how hard the blower needs to blow. When you close a vent, you increase the pressure. The blower is now pushing against more resistance.

With systems that are able to vary the speed to the condition, the blower will ramp up to compensate, which causes the system to operate in an inefficient manner. The typical system is not variable-speed and so will continue to spin but provide less airflow. Your home will be less comfortable, which will make you adjust the thermostat accordingly and diminish any savings.

Closing Vents Often Leads to Additional Wear and Tear

In either case, what you have is a suboptimal situation. This may not cause any permanent damage over the short term. Over the long term, however, there can be many unintended consequences, including duct leakage, frozen coils, dead compressors and more.

What Are Your Options?

You could have your system calibrated to the right pressure with the desired vents closed. This is likely not practical over the long run. You’re better off having an energy audit conducted to determine where you can save in a sustainable manner.

If you’d like to take a more proactive approach to make your home more energy-efficient and affordable, W A Air Conditioning is here to help. We’d be happy to have a NATE-certified technician perform an ENERGY STAR-approved home energy audit at your property. We also offer a full range of cooling, heating and air quality services.

Contact W A Air Conditioning today to ask any questions or to schedule an appointment for your place in Trinity.

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February 18, 2019 10:23 pm