Harster Heating & Air Conditioning

Contact Us


Free Second Opinion

Free Second Opinion

Free Second Opinion

If your compressor or heat exchanger has been condemned by another service company…let us be the judge. Call Harster and we’ll come out and give you a free second opinion on whether your unit is really shot or not. We’ve got over 60 years of expert service. Give Harster a call today.

For home or business, heating and cooling repair, installation or maintenance.

Call Harster for a free estimate.


Send us an email!

Contact Us

9900 Gravois Road

St. Louis, MO 63123

Sign Up For Our Newsletter!

Get exclusive offers and energy saving tips.

We respect your privacy. Your email address will NOT be shared or sold.