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Pat's Heating & Air Conditioning We aim to not only provide the best HVAC Services, but the best services for our community! Pat's Heating & Air Conditioning focuses on people. Our customers are friends, and we've built relationships through personalized service and dedicated job performance. Our team of technicians are part of the family, and share our commitment to ethical and honest business practices.

Trust Pat's Heating & Air Conditioning for quality HVAC services throughout Oconomowoc & surrounding areas!. Pat's Heating & Air Conditioning is Oconomowoc's first choice of HVAC Company because we stive to provide our customers with excellent service day in and day out.
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Pat's Heating Has a Passion for People-Our Team Members are Part of the Family, Our Customers are Friends. In 1989, Pat's Heating & Air Conditioning started small, with just the owners, Pat and Mary Sue, and a single technician. Over the years, the company has grown steadily customer by customer, service call by service call, installation by installation.
As a family-owned business, we are part of Waukesha County's Greater Lake Country area. That's why we've made it a point to have a strong presence in the area through community involvement. Our owners and employees contribute through financial support and volunteer hours to improve and enrich our communities-where we all live and work.
I brought Rosati's Pizza to this area back in 1998. When I hired Pat's Heating do work for me and I knew when I expanded my business to it's current location that there was no one else I would use for my Heating and Air conditioning needs. Restaurants place demanding expectations on their service people because their livelihood depends on it.
Check that the furnace switch is in the "on" position (switch is near your furnace and looks like a light switch). Check thermostat to make sure display is lit; if not lit replace the batteries in thermostat. Be sure that the outside intake and exhaust pipes are clear of debris, leaves, or snow/ice build-up.
Reviews (23)
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Jackie Scott
Jun 16, 2022
We worked with Pat's when we installed our furnace and yesterday they installed our air conditioner. The workmen were very professional, friendly and explained things very well. I highly recommend them! Service: Install AC
Todd Behringer
Jun 15, 2022
Pat's did a great job of offering us several quotes to best meet our needs. While they weren't the cheapest quote we received, they were very reasonable compared to some quotes we received. Ultimately, we chose to go with them because of recommendations from others and the quality of the products they sold. Our installation was done timely and in a very professional manner. While I hope not to need their services again any time soon, I gladly recommend them to others!
Jacque Long
Mar 06, 2022
Pat's Heating and Air Conditioning did an absolutely fantastic job installing two furnace and two air conditioning units at our new commercial building. The ease of working with Shaun, technicians and the office staff was second to none! I am so thankful to have such a quality HVAC contractor so close to home right here in Oconomowoc. The entire staff at Pats Heating is honest and genuinely cares about putting the customer's needs first! They also sell quality "American made" equipment which is not offered by all HVAC companies. We appreciated their ease of working with and professionalism very much.
Mar Haverkampf
Feb 03, 2022
This is my first experience using Pat's Heating. The service I received was very professional and he explain what he was doing and what I need to keep my eye on. He provide me with suggestions on type of furnace filters to use (which I had asked home). He was on time and you could tell he loved his job. I will continue to use Pat's Heating services.
Tom Orner
Feb 02, 2022
Thanks Pat's Heating & AC. They fixed my old furnace that was acting up on the coldest day of the season. They were able to make it to the house quick, sooner than estimated, the repair is what they thought it would be from the earlier conversation and reasonably priced. And Debbie at the office was excellent as well, having me check a few things before scheduling the tech. I recommend Pat's.
Barb R.
Jan 02, 2022
Contacted Pat's In October in Regard to some plumbing I had done by an apprentice plumber Lots of air in my boiler heating pipes throughout the house. Pats sent a technician out to bleed the lines which he did. He was there for maybe 45 minutes charged me $275 and left a zone valve open to my upstairs I came home from work to 85 degrees in my upstairs.

I flipped the valve shut myself. Now I'm having issues with a pressure release valve discharging water Really not sure I want to contact pats to look into this for fear of another costly bill.
Eric Printz
Dec 22, 2021
Pat's replaced our 30 year old furnace and AC. We went with a new Daikin system and were extremely pleased with the entire experience. They were always on time, very responsive and overall we feel this was a great value for us. Thank you to the entire Pat's team for the all-around great service from the first call all the way through the install. If you're shopping for anything HVAC related, we highly recommend giving Pat's a call!
T. Z.
Dec 19, 2021
Many neighbors recommended Pat's, but I still got three estimates for a new furnace and whole-house humidifier. Their staff was friendly and helpful at every step of the process and Pat's came out on top with the best system for a very competitive price. They installed the system sooner than I expected, patiently answered my millions of questions, were thorough with necessary duct/register modifications, and nice cleanup when complete.

They came back quickly with a friendly, professional attitude when I had a couple follow-up requests - made it feel like I was calling family to help. Great local business with an impressive reputation in the area.
Kevin Sheridan
Nov 01, 2021
Furnace and AC replacement. Pat's was very prompt, clear and competitive pricing, technicians were friendly and professional, installation went without a hitch and our home was left clean after the work was completed. The office staff is top notch. I would highly recommend Pat's! Services: Install thermostat, Heating system installation, Heating system repair, Install AC
Mark Franceschi
Oct 17, 2021
I've used Pat's heating & Air Conditioning for almost 20 years and two of my homes. Through the years they've provided maintenance, repairs and installations. The entire team, from the ladies who answer the phones to the guys in the field, have been courteous and honest. Always fixed right the first time and never over sold or pressured. I recommend them without hesitation.
Paul Melnick
Sep 21, 2021
We have used Pat's for service to an existing furnace for years. It is now time to replace that 34 year old furnace and we turned to Pat's for the replacement. They were great to work with from the estimation process to the installation. The installation team were professional and did a great job. We highly recommend Pat's. Service: Heating system installation
Gary Staker
Sep 15, 2021
We are very satisfied with the timeliness quoting and installation of a new 4 ton AC unit. All personnel from Pat's Heating & Air Conditioning were very professional and easy to work with from start of project to completion. I highly recommend this company to all that want a fair price and quick service Service: AC installation
Ben
Aug 30, 2021
We have used Pat's twice now. Once for zoning our old HVAC system, and most recently for replacing our failed AC and older furnace. All interactions with staff, from front desk/scheduling, consultations, and installations, have always been professional and timely. Compared to another local company, I felt Pat's was price fairly and offered practical solutions without overselling. We will continue to use Pat's for our future needs as they arise!
Lori Erdmann
Aug 15, 2021
We own a number of commercial buildings and have always used Pat's Heating for everything from maintenance to new systems. We needed a new HVAC system taken off and a new one put on a roof. This is the first time I have seen this done in person. From the time Sean and his crew got there, to the crane getting there, to the old system lifted off the roof to the new system put on the roof was 25 minutes.

Oh and the junk man came to take the old unit within this time too. The whole team from the office personnel, service personnel, and work crew at the site were so personable, helpful and I tell you they are well oiled machines. I would recommend this team 100% to anyone. They are a blessing to this whole community and beyond. Thank you for always taking great care of us. It doesn't go unrecognized.
Jamie Lostetter
Apr 29, 2021
I highly recommend Pat's Heating and Air Conditioning! From the initial consultation to the final walk through on our new Furnace and AC Unit absolute professionals and great people to work with. They work fast and efficient and leave everything looking better than before. They make sure you understand how everything works and how it works to save you money down the road in energy efficiency! So happy to get both the furnace and AC done and now ready for another 20 years! Thanks Again!
David O.
Mar 27, 2020
I have used Pats repeatedly over the last two years. I have a complicated old house with a lot of aging hvac. Their service is excellent. Just had them here and technician wears gloves and keeps social distance, well aware of Corona virus. Help the local business out during these tough times! They will take great care of you!
Dominique S.
Nov 03, 2018
The after hours call tram was helpful and respectful during my call. The incred part is they called me back as promised. The service over the phone was amazing as Pat tried to fix the issue without coming out. We tried a number of things but it would not resolve so Pat is coming out tomorrow.
Brad F.
Sep 21, 2018
Can't say enough about this company! I have used them for annual service and general repairs over the past 5+ years, and not once have I ever had a bad experience. The technicians have always been professional, helpful and full of great advice. I have never had to wait an exceptional amount of time for service; My last annual service, they were at my door 5 hours after I called to schedule an appointment. I will continue to use Pat's exclusively for all of my HVAC needs.
Tony K.
Mar 23, 2018
Woke up to a freezing cold house. Darn, the furnace was out! Based on the reviews I found online, I decided to give Pat's a call to see if they could get the old thing running again. Couldn't be more impressed; one of the best examples of customer service that I've experienced. The friendly dispatcher informed me that a technician would be there within an hour, and the professional, knowledgeable technician had our furnace up and running again in short order.
Tania S.
Jun 21, 2017
I had them come over to install new air conditioner. Very knowledgeable and great customer service. I will definitely use their service again in future.
Jean M.
Nov 17, 2016
I was a little bummed, when I learned I needed a new furnace. It is December, and I really didn't need an added expense, with the holidays around the corner. The staff, however, is amazing. They explained everything and even answered questions that I forgot to ask. The men who installed my furnace were totally professional. They both had a good sense of humor and were fun to have around. I've had the opportunity to work with Pat's on other occasions.routine check-ups, etc. Whoever comes is always polite and very good at their job. I've recommended Pat's to a lot of people. You really can't go wrong!
Laurie P.
Mar 24, 2014
Couldn't be happier with the service we received from Pat's. Lost our old furnace on the coldest day of the year-they did an emergency repair until our new furnace was installed. Very happy with the new one-the April Air has been a great addition. The workers were friendly, quick and clean! And the Cheese Box from Brennan's is a nice touch, too! Highly recommend Pat's!
Christina K.
Mar 24, 2014
Our heat exchanger failed as our house was listed on the market. The house was vacant and I was very pleased when I came after installation to see there was zero mess for me to clean up! They installed to perfection and left no mess for me. Justin was excellent at diagnosing the problem immediately. They came next day to install. Very impressed with customer service and the entire team. Thank you Shawn for nice discount. :