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Heat Controller B-VMH18FC-1 Air Filter
It is highly recommended the your furnace filter is changed every 3 months so as to maintain good airflow in the home. The actual dimensions of the filter is not a choice of options due to the requirement of your air handler. Heat Controller B-VMH18FC-1 filters exist in many different filtering types in which the one you choose will depend on your demands for clean air and air handler size requirements.
Red flags your filter probably needs to be replaced
- The system air filter looks gray or brown and could be replaced now
- With a light behind the air filter, the light cannot penetrate through a completely clogged filter
- Professionals have advised to swap out your air filter about every three months in order to have cleaner breathable air inside
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