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Lennox 42W43 Air Filter
It is advised the your furnace filter is changed every 3 months to maintain the best air quality through the ducts. Exact measurements of the air filter can not be a choice of options because it is based on the declared size of the manufacturer of your system. Filters for your Lennox 42W43 come in a wide array of types and sizes, in which the one you choose will depend on your desire for cleaner air and air handler size requirements.
Major indications the dust filter needs a replacement ASAP
- The system filter looks gray or brown and should be replaced immediately
- When you hold it up, the light will not infiltrate to the opposite side of the dirt filled filter
- Manufacturers have recommended to switch out the air filter in your unit four times a year in order to keep the air free from too much dust
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If you are going to be buying or ordering a replacement air filter for your Lennox 42W43 do your best and double check the correct model as well as make a visual comparison so that you are positive that the correct replacement air filter is the one being purchased. HVAC professionals could be quite expensive to hire so you may want to keep a lookout locally to acquire the best rate if money is a concern.
Feel free to download your manual for help.
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