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Lennox G40UH-36B-090 Air Filter
Professionals in the industry advise the your furnace filter gets replaced every 90 days or so as to maintain good airflow inside the house. The height, length and width of the main system air filter choice that needs to be made due to the constraint of the availability of room of your air handler. Air Filters come in many varieties and specific sizes, depending on your air quality needs and the specific size of filter you need for your system.
Do you know if your air filter is on its last leg?
- The system filter looks dusty and maybe should be replaced without delay
- If you lift the air filter up to a source of bright light, the light cannot infiltrate to the opposite side of a completely clogged filter
- Many pros have suggested to replace your air filter about every three months to help clean the indoor air
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Before you decide on buying or ordering do your best and double check the model number and also make a visual comparison in order to be sure the correct air filter is the one being purchased. There is no need to replace the part all by yourself. Look for a professional in your community to pay to install it for you.
Feel free to download your manual for help.
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