Flexible financing available through Synchrony

Aasen Heating & Cooling

HVAC Services in Oconomowoc, WI

With highly-trained technicians in trucks that are stocked with industry-leading equipment, contact Aasen Heating the next time you need HVAC service in Oconomowoc, Hartland, Watertown or the surrounding Waukesha, Jefferson, and Dodge County areas.

We provide free estimates on all installations, so you can always be sure you're making the right decision before you commit to a new system. We also offer service specials and financing options, allowing you to afford quality HVAC work regardless of your budget.

Call or text (262) 567-4243 to get started!

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Premium Systems Built to Last

Our top-of-the-line home comfort systems are thoughtfully designed and constructed to far exceed quality standards. These incredible YORK units are built to withstand the rigors of long-term use.

Our Service Areas Include:

Oconomowoc, Chenequa, Concord, Delafield, Dousman, Hartland, Ixonia, Watertown, Jefferson, Nashotah, North Lake, Okauchee Lake, Stonebank, Sullivan, and surrounding areas.

Quiet Operation Creates a Peaceful Home

Our top-class system operates at a noise level as low as 68 dBA. Its thoughtfully combined components ensure peace and quiet outside of the house.
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Premium Systems Built to Last

Our top-of-the-line home comfort systems are thoughtfully designed and constructed to far exceeds quality standards. This incredible line is built to withstand the rigors of long-term use.

Lower Cost of Ownership

This premium system can save up to 44% or more on energy usage annually. These models meet ENERGY STAR efficiency requirements, and are often eligible for rebates and tax credits, such as 25c Tax Credit through the Inflation Reduction Act (IRA).

Quiet Operation Creates a Peaceful Home

Our top-class system operates at a noise level as low as 68 dBA - that's as quiet as normal conversation. Its thoughtfully combined components ensure peace and quiet both inside and out.

Blower Fine-Tuning Adapts to All Climates

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Why Aasen Heating & Cooling?

In Business Since 1949

Professionally Licensed and Insured

High-Efficiency Products

FREE Estimates

Emergency Service Available

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About Aasen Heating & Cooling

Lake Country’s Preferred HVAC Contractor for Over 75 Years
Aasen Heating & Cooling is a family-owned HVAC business that's been serving residents of Oconomowoc, WI for three generations. Ever since we first opened in 1949, we have looked for new ways to serve our community and deliver exceptional services at a reasonable price.
Our Story
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Testimonials

Extremely happy with the installation of the new air conditioner. The crew was always on time, pleasant to work with, careful not to damage or make a mess, and just a totally different experience than working with other contractors. Would recommend to anyone and everyone. Already have. Five stars.
Robert L.
I worked with Todd to upgrade a thermostat and add a few zone sensors in a property I manage in Oconomowoc. Todd was very responsive over the phone and by text. I was able to get the work scheduled in the time frame desired, and within my budget. I would definitely work with the Aasen Heating & Cooling team again. Thanks for all your help!
Matt K.
Todd and his team did an outstanding job replacing my a/c unit. I wouldn't hesitate to call Aasen Heating and Cooling again for any of my future hvac issues.
Chongyee Y.
I have used Aasen Heating & Cooling for heating duct cleaning, furnace maintenance, and for purchase and installation of a new central air conditioning system. I have always been very happy with their work, and felt their pricing was very good. Highly recommended! I got to know the original owner, Pete Aasen, very well over the 8 years I have lived in the area. He was an exceptionally good man, and he will be sorely missed.
Scott H.
I want to thank Todd and Matt for taking such good care of my problem. Matt has always done a great job. So good to be cool today. They are always there for you.
Debbie B.

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