
Serving Oconomowoc, WI and surrounding areas
Approved
In business since 1877
Free estimates
Emergency services offered
"Everything about the sales call, estimate and installation was handled very professionally. Good value compared to other quotes."


Serving Oconomowoc, WI and surrounding areas
Approved
In business since 1877
Free estimates
Emergency services offered
"Everything about the sales call, estimate and installation was handled very professionally. Good value compared to other quotes."

Serving Oconomowoc, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"The yearly service agreement I have for inspection of my furnace and central air was a great investment. Jim a furnace tech arrived today on time per great communication with him and his office. The inspection was far greater than I expected for the cost. The tech was pleasant and very good at his job. Being a retired field service technician I’m a good judge and was more than satisfied. I highly recommend Kettle moraine as over the years we have had them replace the furnace and also our central air. Every experience has been a pleasure and without one complaint."





+8

Serving Oconomowoc, WI and surrounding areas
Approved
In business since 1985
Free estimates
Emergency services offered
"I purchased a new HVAC system from Cardinal. Everything about the job went as planned, in the amount of time we were promised. The installers were professional and cleaned up the work space very well when they were finished. I would use Cardinal again without hesitation."
Serving Oconomowoc, WI and surrounding areas
Approved
In business since 1984
Free estimates
Credit card accepted
Cardinal Heating, Cooling, Plumbing & Electric has provided full-service HVAC, plumbing, and electrical work to homes and businesses throughout the Madison area since 1984. Homeowners call us for furnace and air conditioner repair, water heater replacement, drain cleaning, and electrical panel upgrades, along with the everyday plumbing and electrical work every home needs. We take the time to listen to every customer and explain the options clearly, and our licensed technicians bring years of hands-on experience to routine maintenance, unexpected repairs, and full system installations alike. Call Cardinal today to schedule your free estimate.

Serving Oconomowoc, WI and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"I spoke with the owner at 2:30 in the afternoon and he was here for an estimate at 5pm. We booked an appointment for a new furnace that day. We had problems with the old furnace and the owner worked on it, attempting to replicate the problem. A Tech was sent out the next morning (free of charge) to get us through until the new furnace was installed 6 days later. Everyone we dealt with was VERY knowledgeable, explained each step to us, were expedient and very thorough. Pricing was excellent. This company will be the only company we call for ANY HVAC work. HIGHLY RECOMMEND!!!"

Serving Oconomowoc, WI and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
At Southport Plumbing, Heating & Cooling, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the #1 medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.





+2

Serving Oconomowoc, WI and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
Roman Home Services is a leading electrical, plumbing, and HVAC contractor serving Southeastern Wisconsin. We offer a comprehensive range of residential electrical, plumbing, and HVAC services, including new construction, remodeling, repairs, and routine service. With the expertise and experience to handle projects of all sizes and complexities, our team is committed to delivering reliable, high-quality results.\n\nWhen you choose Roman Home Services, you can expect professionalism, integrity, and a commitment to excellence. We are proud to serve homeowners throughout Southeastern Wisconsin and look forward to helping with all your home service needs. Contact us today to experience the Roman Home Services difference and see why Milwaukee-area homeowners choose us for electrical, plumbing, and HVAC service.





+4

Serving Oconomowoc, 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 Oconomowoc, WI and surrounding areas
Approved
In business since 1993
Free estimates
Warranties offered
"We were given an estimate by Jason & he was very professional & he gave us two options for the work that needed to be done. We chose this company over the two others we received as the work would bring all of our electrical up to code. We were given a start date & estimate of how long it would take and they were spot on. The work was completed on time & it looks great. One the things we liked was that the person doing the estimate (Jason) was also the one doing the work. They handled everything - permits & contacting the city inspector. The city inspector reviewing g the work just kept saying "wow." We did purchase an extra package which included a followup inspection of our furnace & A/C units. Jason & Jayden were respectful of our time & propert & we highly recommend them!"





+3

Serving Oconomowoc, 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.

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

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

Budget for the cost to replace an AC condenser based on factors such as unit size, repair type, brand, accessibility, labor, and more.

Budget for AC evaporator coil replacement costs based on factors such as your AC unit’s tonnage, coil style, professional labor rates, and more.

Budget for HVAC maintenance costs based on factors such as unit age, time of year, repair task, warranties, condition, service plans, and more.

Learn how much a swamp cooler costs to install based on the type, project size, operating costs, removal and disposal fees, and add-ons.