Maintaining Your Heating and Air Conditioning Units
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Maintaining Your Heating and Air Conditioning Units

Hello. My name is Max. My wife and I have five children who all live at with us in our large two-story house. My wife and two of our kids suffer from severe allergies which means keeping our home as dust-free as possible. I have learned that it’s crucial to keep our heating and air conditioning units properly maintained at all times. We have a fantastic HVAC company that comes out two times a year to perform routine maintenance on our system. They have taught me what I can do on a monthly basis in order to not only help with my family’s health but also keep our system running efficiently. I would like to share some of the tips I’ve been given. I hope you find this to be useful!

Maintaining Your Heating and Air Conditioning Units

When Your Furnace Is Banging: Problems When The Heat Turns Off And On

Kristin Pierce

If you have noticed that your furnace is banging when the heat turns off and on, it's probably time for your system to be cleaned. When you try to skip yearly heating system maintenance, problems can occur with the air flow through the system. This will cause loud banging noises when air gets blocked in your ducts, and it can be bothersome to many home owners. While it is unlikely that you have a serious problem with your heating system, it's important to get loud noises checked to avoid emergency repairs in the future. 

Your Air Filters are Dirty

Your heating system contains several air filters and if they are clogged with debris, this can cause problems with the flow of air through your heating system. This will cause your duct work to expand and contract, making loud noises in the process. If you don't know where the filters are in order to change them on your own, contact an HVAC technician to do the work for you.

Debris is In Your Duct Work

You can try to spot check your duct work for debris. Sometimes small animals can get into your duct work, building small nests and blocking the air flow. The nests will need to be removed, and your duct work thoroughly cleaned in order for your heating system to work properly.

Your Fan Needs to be Cleaned

A fan helps push air through your heating system to bring the warm air up to the rooms in your home. When the fan needs to be cleaned, air can become trapped in your duct work. When the system shuts off, the duct work quickly contracts, causing a loud banging noise. To help improve the flow of air through your system, have the fan cleaned.

Try Opening Up Dampers

Depending on the size of your system, there will be a number of dampers in your duct work. Try opening up one at a time to see if this helps improve the air flow going through your duct work. Usually this will help decrease the amount of loud banging that is caused when the system turns on or off, so it is worth trying the dampers if the noise is bothersome to you.

As the heating system begins, it's important to have your furnace serviced so that it works as efficiently as possible. When you are prepared for the winter ahead, you will help avoid more expensive, emergency repairs. For more information, visit websites like