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Call Us Today!
(262) 728-3658
Call Us Today!
(262) 728-3658
Tempstar heating and cooling product


Karsten Heating & Cooling is fully licensed, bonded and insured to provide residential heating and air conditioning services for our clients in Delavan, Wisconsin, and the surrounding areas. We are a registered dealer for Rheem and Tempstar and also, provide free estimates, state energy discounts, and Rheem cashback discounts to our customers.
Karsten Heating & Cooling was founded in 1961 by our current owner’s father. We have been at our current location since inception and are proud to be a family-owned and -operated business. Our customers associate us with outstanding service, experience, reliability, and competitive pricing. We are happy to say we are well-known in our area for our quality of work and professionalism.
AC Systems Service in Delavan


Keep your cool with our HVAC service, including installation, replacement, and repairs. Don’t break a sweat, we can repair any make or model.

Home Comfort

Contact Us

Tired of sweating in the summer and freezing in the winter? Call us! Our professional technicians make sure all our clients are cool customers. 

Call Us Today At ♦ (262) 728-3658

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Payment Options

Financing through Wells-Fargo

Business Hours

Mon - Fri: 08:00 AM - 05:00 PM
Sat: 08:00 AM - 12:00 PM
Sun: Closed

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  • Karsten Heating & Cooling

    196 Walnut St.
    Delavan, WI 53115
    Phone: (262) 728-3658
    In Business Since 1961