Harster Heating & Air Conditioning

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Energy-Saving Thermostats

Energy-Saving Thermostats

Programmable Thermostats

Why programmable thermostats are so cool.

Programmable thermostats are simple to operate and offer money and energy savings. Harster can help you save with these smart, efficient digital solutions.

Harster offers wireless, remote thermostats work that with your WiFi, and are designed for easy integration with existing units to keep comfort high and energy costs low. Our installation and replacement are quick and easy.

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.

PRO1 IAQ Thermostat

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

Call Harster for a free estimate.


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9900 Gravois Road

St. Louis, MO 63123

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