In the summer heat, air conditioning systems become indispensable in maintaining a comfortable indoor environment. But some homeowners are tempted to run their AC system while leaving their windows open for fresh air.
This is a bad idea for several reasons and can affect your air conditioner adversely.

You Wear Down Your AC Unit

Is It Bad To Leave My Windows Open When I Have My AC On?Leaving your windows open results in your AC system needing to run continuously, dramatically shortening its lifespan. AC systems are installed with a load in mind related to the size of your home. When you leave windows open, you increase the load. Your AC system has to work much harder to maintain the temperature you set on the thermostat as cool air escapes out the open windows.

Trade-Mark Air Conditioning provides air conditioning replacements for Ingram, TX, homeowners and the surrounding areas. Our technicians ensure your home’s air conditioning system is the right size.

Dust Enters Your Home

When you leave a window open while running your AC system, dust comes into your home and then enters the return register. The dust clogs up your system’s air filter and can end up covering the evaporator coil. You’ll need to change air filters more often as otherwise, your system will have to work much harder to cool your home. A dust-covered evaporator coil results in a slowed cooling process, which ends up increasing your energy bills.

Open Window Alternatives

Rather than leaving windows open to bring in fresh air, you’re better off having an energy or heat recovery ventilator installed in your home. These ventilators draw in fresh air while expelling stale air without losing the indoor air’s temperature. While these ventilators use electricity, it’s a far smaller amount than what it costs to leave your windows open while running the air conditioner.

Trade-Mark Air Conditioning offers affordable HVAC installations, AC tune-ups as well as air conditioning repairs. Our trained HVAC contractors are also experienced in water heater repairs and offer refrigeration services to small businesses. Additionally, we are indoor air quality specialists. Please contact us today to schedule a visit from one of our heating and cooling technicians.

Updated: July 25, 2023

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May 20, 2020 4:19 pm