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Carrier 38EZA036 Air Filter
It is suggested the your furnace filter is changed every 90 days or so to maintain the best air quality in the home. The main filter can filter out a lot of contaminants and other fine particles from the air handler. The dimensions of the HVAC air filter choice of options but rather a requirement of the manufacturer of your system.
General warnings to watch for in a bad main filter
- Sunlight will barely shine through to the other side of a very dirty air filter
- The system air filter looks brown and should be replaced immediately
- Manufacturers have advised to replace your air filter four times a year in order to keep the air free from too much dust
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