Harster Heating & Air Conditioning

Contact Us






    Since 1919, Intertherm has been an integral part of improving the comfort of manufactured homes. Today, the manufactured home is a sophisticated, affordable home that is a smart choice for many buyers. Equally smart is knowing that your manufactured home heating and cooling system is just that — a system specifically designed for your manufactured home.

    The more you learn about our manufacturing process, the more you'll see that no other heating and cooling manufacturer compares to Intertherm's product quality. While other companies test products at random, we use 100% computer-automated testing on every Intertherm product to eliminate human error in the final analysis of product quality. We are the only heating and cooling manufacturer to be certified in Demand Flow Technology™. With more than 90 years of experience in the manufactured housing industry, it is easy to see why most new manufactured homes are built with Intertherm heating systems, and when applicable, are equipped with Intertherm cooling systems, too.

    We use only high quality, dependable components. Our unique manufacturing technique checks your product 150 times to assure that we deliver the best product available to your home.


    • - 1-year warranty on parts and labor. 10-year heat exchanger warranty.
    • - Proven components ensure high quality and dependability.
    • - Heavy-gauge aluminized steel heat exchanger ensures long life and efficiency.
    • - Insulated cabinet ensures minimized heat loss and quiet operation.
    • - Appliance finish protects against rust and other corrosion.
    • - All units and each component are tested on the manufacturing line to ensure quality.
    • Meets HUD requirements.

    Packaged Units Packaged systems are designed to heat and cool your home. Your packaged unit may consist of either a heat pump or air conditioner; or a combination furnace and air conditioner called a gas/electric packaged unit. The system is installed on the outside of your home, providing cooling or heat from one space-saving unit.

    You can rely on your Intertherm expert to make your home more comfortable with digital thermostats and other manufactured home accessories. It’s a comfort to know that Intertherm is made for your manufactured home, and it’s a comfort you can feel.


    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 For Our Newsletter!

      Get exclusive offers and energy saving tips.

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