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Our customer-care specialists are ready to answer any questions you may have.

Looking for literature?

You will find brochures for most Lennox^® products in our archived documents section. If you need information on a model that isn’t listed, you can request literature by mail.

Frequently Asked Questions

Lennox HVAC System Filters

Where is my air filter located?

When should I change my air filter?

Where can I purchase air filters?

You can purchase replacement filters from your Lennox dealer. Some filters are not recommended by Lennox for use with Lennox heating and cooling equipment because they may be too restrictive and cause system malfunctions. Your Lennox dealer can help you choose the best filter for your HVAC system and needs.