Heating, Cooling, & HVAC Repair In Waukesha, WI
Same-Day Service
Heating and cooling emergencies happen when you least expect them. Contact the professionals at The Thielmann Group to assess and fix the situation you're dealing with. We have the necessary skills and tools to fix your system so you can safely use it once again. Call the Thielmann team at (262) 299-6197 to get emergency HVAC services in Southeast Wisconsin.

Heating, Cooling, and HVAC Repair Services in Waukesha, WI

For over 90 years, the team at Thielmann has provided customers in Waukesha, Wisconsin with reliable, top-notch HVAC repair services. From heating and cooling to air quality and installation, we do it all so you can rest assured your home will be in its best condition and your family will be comfortable.

We also know life gets busy—that’s why we offer easy, convenient scheduling. Give our technicians a call at (262) 299-6197 or fill out our online form and someone will get back to you quickly.

Our Professionals Will Keep Your House Comfortable During the Fall, Winter, Spring, and Summer Seasons

The average temperatures in Waukesha, Wisconsin are radically different from winter to summer. Winters are known for being freezing, with some of the coldest months having temperatures in the low 20s. In contrast, the summers are humid, warm, and muggy.

Summer temperatures in Waukesha hit around 75°F but can get up to 90°F. The humidity from the surrounding lakes and rivers makes it feel hotter in the local area. Stay cool in this summer heat, and cozy and warm in the winter, when you work with our team of NATE-certified technicians. We will keep your house habitable throughout each season by helping you maintain your furnace, heat pump, boiler, or central air conditioner.

Air Conditioner Replacement and Installation Services

Sometimes, your air conditioner is on its last leg and the best move is not to repair it but to replace it completely. If this is the case our team of certified technicians is ready to help. With decades of experience in AC installation and replacement, we can handle putting in a new AC unit for you from start to finish.

We also provide heating and cooling services in Waukesha, Wisconsin for the best brands on the market and have flexible, easy financing options so you can stay within your budget.

Waukesha, Wisconsin Heating and Cooling Services

Air Conditioning Repair Services

Summers in Wisconsin can get muggy and hot. Make sure your home is up for the task of keeping you cool by scheduling air conditioning repair or air conditioning tune-up services.

The best way to ensure your AC is ready for summer is by having a technician come over and assess your unit, checking if it needs any repairs.

Here are some of the components of an AC system we will check to see if it needs repair:

  • Evaporator coil
  • Compressor
  • Condenser coil
  • Expansion valve
  • Filter
  • Fan

We also offer air conditioner installation services for old systems that cannot be fixed. If you notice any weird noises, strange smells, or a lack of cold air, chances are you will need a repair or replacement.

Ductless Mini-Split Services

Homeowners in Wisconsin love ductless mini-splits because they are great for the ever-changing weather, from the frigid winters to the humid, muggy summers. Ductless mini-splits are super versatile and offer both heating and cooling options.

We offer the following mini-split services:

  • Installation
  • Replacement
  • Repair
  • Maintenance
  • Inspections

Our team offers superior HVAC repair services and is fully equipped to handle any ductless mini-split issues, like refrigerant leaks, compressor problems, drainage malfunctions, frozen coils, electrical problems, blower issues, weird noises, and more.

Furnace Repair and Tune-Up Services

Keep your home warm and cozy for the winter with our reliable furnace repair and tune-up services for local residents in Waukesha, Wisconsin.

We can work on any system you have, like:

  • Gas furnaces
  • Oil furnaces
  • Heat pumps
  • Packaged units
  • Boilers
Waukesha, Wisconsin HVAC Repair Services

Furnace Installation and Replacement Services

We can install gas, oil, or electric systems for your convenience. Whether your old system is on the fritz and you need a furnace replacement, or you have a brand-new property and need a furnace installed, we will take care of it.

Heat Pump System Installation Services

Wisconsin residents also use heat pumps to stay warm in the cold winters. Our NATE-certified technicians specialize providing extensive heating and cooling services in Waukesha and will keep you updated from start to finish on the project. To receive support with a heat pump installation or heat pump repair, contact or HVAC contractors to receive support.

Boiler Installation and Repair Services

Another popular heating system, boilers are a great energy-efficient way to heat your home. We offer HVAC installation, repair, maintenance, and tune-ups on boilers.

If you notice any of the following signs, contact us for boiler repair:

  • Insufficient heat
  • Foul odors
  • Strange noises
  • Cold air
  • Yellow pilot light

We also offer routine boiler maintenance to expand the longevity of your system and ensure it is fully functional when you need it.

Thermostat Installation, Replacement, and Repair Services

Your thermostat is the remote control for your climate comfort. It controls heating and cooling functions but is often one of the most overlooked components of your HVAC system.

If you begin noticing malfunctions in your HVAC system, before rushing to assumptions that a motor is broken or you need a full replacement, consider your thermostat. We offer thermostat installation, replacement, and repair services.

Commercial Heating Maintenance and Replacement Services

Just like homes, businesses and commercial spaces need to offer a good climate-controlled environment to keep patrons and employees alike comfortable.

If you notice anything off about your business’s HVAC system, call the professionals at Theilmann to receive fast and convenient commercial heating services. Our 90 years of expertise means we’ve seen it all, not just in residential spaces but in commercial ones as well.

Waukesha, Wisconsin Heating and Cooling Services

Take Back Your Weekends and Worry Less About Heating and Cooling Issues in Your House

One of the advantages of working with our team of professionals includes having more time to enjoy your free time in Waukesha. While we take care of solving your HVAC problems, you can spend your time out on the town.

Take a stroll around Sanctuary Woods or visit the Waukesha County Historical Society and Museum. Our technicians will quickly inspect and fix your malfunctioning furnace or air conditioner to ensure you have time to enjoy your weekend.

Book a Heating or Cooling Appointment With Our Team in Waukesha

Our team in Waukesha is available any day for heating and cooling services. From boiler repair and heat pump installation to AC maintenance plans, we have you covered. We also are skilled in air quality and offer duct cleaning, whole-home humidifiers, and other air purification services.

Simply fill out our form online or give us a call at (262) 299-6197 to receive assistance.

Excellent
Based on 520 reviews
Michael Bania
Michael Bania
May 12, 2024
From the beginning of the process with sales call with Dave through the complete installation, your staff were exceptionally professional and helpful.
Tanya Newbauer
Tanya Newbauer
May 7, 2024
Theilmann was the only company out of two others, that told us about code requirements for our furnace being on the first floor. They did an amazing job with it being in a small spot and loved our dogs!
Bobi Brouse Bertling
Bobi Brouse Bertling
May 6, 2024
The Thielman group is great. They were right on time, efficient and did an excellent job. My only struggle is with the digital thermostat. I wish I had a better understanding of programming it. I would highly recommend this company to anyone.
Paul Durbak
Paul Durbak
May 4, 2024
Our old furnace quit. We called our old service provider, and the old furnace needed a very expensive replacement part. He also tried to sell us equipment we did not need. Being Costco members, I called Costco, and they forwarded our call to Thielmann. Jason called, and gave us a price for a new furnace. He came out the same day, and the price quoted over the phone was what we paid. The installation was scheduled, and we are very happy with the equipment and the service. Using Costco, we also got a nice rebate. Thanks.
John Spors
John Spors
April 19, 2024
Very professional and prompt. We are happy with our new furnace and recommend Thielmann for service and HVAC installation.
Donald Trapp
Donald Trapp
April 19, 2024
Salesman came in and looked at both the furnace and air conditioner and we agreed to get new ones. He was very helpful. Also, the guys that came in and installed both were polite and good at their installation. Would recommend Thielmann.
Shannon O
Shannon O
April 19, 2024
Upon our first call to Theilmann Group with a furnace problem, thru to a new furnace and air conditioner. Everyone we encountered was professional and a pleasure to have in our home. This was not a planned purchase, but they made it as easy as possible. Highly recommend!!
J Knox
J Knox
April 19, 2024
Thielmann did a tremendous job replacing our Carrier furnace. They worked with us to make sure we were able to get the right product and even worked with Carrier on the issues we were seeing on our old furnace as it was failing sooner than it should have. The team was very professional and efficient. Great experience. We highly recommend them.
Tim Schumacher
Tim Schumacher
April 17, 2024
Stop shopping around and call Thielmann & Sons. Wayne, Chris and the team made it so easy, and made sure we understood all options and their impact to our home. Not only did they provide the information you look for in a home expert, but they gave us confidence that the price, timing, and install would go as planned, AND IT DID! They won't upsell you if you don't need it, and if they urge you one way it's because is it's the best option for you. Thanks to the whole team!
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What To Expect

Discover the Thielmann Group Difference

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

The Thielmann Group promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

The Thielmann Group promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

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Our Reviews

See What Your Neighbors Are Saying

I've been using Thielmann Group for all my heating and air conditioning since I built my house 23 years ago. They have been great in emergency service and regular maintenance service. On time and very friendly staff. Would, and have, recommend them to anyone!

Paul K.

Paul K.

I have used Thielmann for both installation of a new furnace + A/C recently, but also an install of a ductless mini-split unit six years ago. I fully trust their brands and recommendations. I can't say enough of about this company. Every single person from administrative…

Christin C.

Christin C.

They performed an April Air install for us. Very professional, fast, knowledgable and responsive. Best price compared to the other places I called. They thought there may be difficulties installing due to our furnace set up, but were still willing to come out and try and…

Jenni S.

Jenni S.

The Thielmann group team was professional, knowledgeable, and on time. They did a fantastic job at a reasonable price. From our first encounter, we could understand how experienced the group was. There were no issues, and the new furnace worked perfectly. I highly recommend them.

Vincent R.

Vincent R.

Thielmann Group installed a new furnace and heat pump for us. We have been using them for HVAC maintenance for several years and were always happy with their service. We got quotes for the new system from a few companies and we were pleased that they…

Laurie K.

Laurie K.