How Windows Affect the Efficiency of Your HVAC System

During cold weather, HVAC systems can run efficiently, and you may not feel the need to open a window. However, when it’s hot or stuffy, people inevitably want to open a window in order to let the fresh air in. It’s important to be wary, as windows can affect the efficiency of your HVAC system.

Simply put, when you open a window, your HVAC system has to compensate for the lost air in order to maintain a consistent temperature. When the window is closed, the HVAC is able to work according to the load it has been designed for.

Sometimes, it can be necessary to open a window if it’s a particularly dry, humid, or stuffy day. In this instance, you should turn off your HVAC system until you close your windows. Aside from preventing your system from overheating, it will also save you money (and with recent increased energy costs this becomes even more important).

Leaving windows open when it’s warm can make your room feel more airy, however, there is the risk of your floors getting wet if it suddenly rains – this is especially the case during very hot weather as heavy thunderstorms can often occur.

Another potential issue is pollen. If you suffer from allergies, open windows can allow more pollen and other allergens to get into your house, so it’s worth considering leaving windows closed during days with a high pollen count.

When you shut off your HVAC system, airflow stops around your home. If you want to circulate air, but don’t want to open a window, then using a ceiling fan is a good option. If you want additional fresh air, but don’t want to attract allergens, opening side windows can create cross-ventilation that can make rooms feel airy and more comfortable (though main front windows should be closed if rain is forecasted).

Keeping your home clean, such as vacuuming floors and wiping down surfaces, can also help to prevent the spread of allergens.

If your HVAC system is shut down for too long, there is the risk that it can gather dust, and this could damage the system, making it less efficient. It is also important to shut windows at night, as this could be a potential security risk.

Whether it’s the summer or the winter, you should have your HVAC system inspected on a regular basis by Handyside HVAC professionals. Keeping your system well maintained will help to keep it working as efficiently as possible, which will also reduce energy costs. With the right approach, you can keep your home feeling airy and comfortable, without spending excessive amounts on energy costs.