Harster Heating & Air Conditioning

Contact Us


Commercial Roof-top Units

Commercial Roof-top Units

Commercial Roof-Top Units

Need an HVAC unit up top? Shout “Harster” from the rooftops!

Commercial rooftop HVAC systems are often complicated. From installation and replacement to maintenance, Harster has helped provide a wide range of solutions and packages to companies seeking outstanding solutions for “up there” outdoor air conditioners.

Harster Heating and Air Conditioning is a top-rated residential and commercial company whose been family-owned and operated for over 60 years. We’re proud to work with top manufacturers, offer great prices and provide exceptional installation, repair, replacement and maintenance for all your HVAC needs.

To learn more, call us today at 314-631-5300 or email us here. We will reply within 24 hours, Monday-Friday.

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 to Newsletter!

Get exclusive offers and energy saving tips.

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