Check the air filter on your HVAC unit every
month, especially during heavy use months (winter and summer). If the filter
looks dirty after a month, change it. At a minimum, change the filter every 3
months. A dirty filter will slow down air flow and make the
system work harder to keep you warm or cool — wasting energy. A clean filter
will also prevent dust and dirt from building up in the system — leading to
expensive maintenance and/or early system failure. Contact your Lennox Service
Representative today with any questions.
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