
Serving South Milwaukee, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"The technician came and gave us an estimate for repairs!"





+8


Serving South Milwaukee, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"The technician came and gave us an estimate for repairs!"





+8

Serving South Milwaukee, WI and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"One Hour Heating & Conditioning was prompt arriving at the scheduled appointment time. My wife and I also appreciated receiving a message that the techs were on their way. Our techs Kyle and Jacob were friendly, professional, and knowledgeable. Arguably one of the most thorough annual checkups I have had since being in the home for 7 years and using some other services in the past. While both furnaces are well beyond their expected life, neither tried to "oversell" me and offered objective pros/cons to some repair options vs. replacement. I would highly recommend One Hour Heating & Conditioning."





Serving South Milwaukee, WI and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
Were dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.





+37
Serving South Milwaukee, WI and surrounding areas
Approved
In business since 1997
Free estimates
Emergency services offered
"Bob is wonderful and did an amazing, quick, and affordable job!"

Serving South Milwaukee, WI and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
We are a small family owned business located in Pewaukee. Call us today for all of your heating, cooling, boiler, and hydronic heating needs. Licensed, insured, and accredited with the Better Business Bureau.





+2

Serving South Milwaukee, WI and surrounding areas
Approved
In business since 2009
Emergency services offered
Warranties offered
"I cannot say enough about our technician, Jordan, or the service of In Phase. We put our request into Angi and probably 1 minute later In Phase called. We have been wanting to upgrade our house to Ecobee since we purchased it two years ago. We thought we could do it ourselves, but our home had 3 zones, a two-wire boiler, and a newly added Central Air system. I had tried to hire other companies to do the job in the past, but very few companies were familiar with Ecobees. When In Phase called they were confident in the Ecobee system and were able to get us in the next day. Jordan showed up on time and was very personable and knowledgeable about the system. He had everything up and running in about 2.5 hours. This easily saved my husband and I a weekend of working on this, not to mention the fact that I didn't have to hear any cursing. (LOL!) BTW...we had already purchased everything, Jordan installed it and got it all set up for us. Many thanks!"





+51
From average costs to expert advice, get all the answers you need to get your job done.

The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.

Discover the cost of window AC installation, exploring factors like unit size, labor rates, outlet installation, accessories, and disposal fees.

Budget for AC coil cleaning costs based on factors such as cleaning frequency, coil type, cleaning method, accessibility, ongoing maintenance, and more.

Need an AC Recharge? Here’s how much it costs, what factors affect cost, and what to expect.

Budget for AC capacitor replacement costs based on factors such as the capacitor type, size, labor, potential repairs, location, season, and more.

Wondering who installs whole-house humidifiers? Hire a licensed HVAC technician. Learn what they do, other pro options, and how to hire confidently