HVAC Contractor In Wauwatosa | Heating & Cooling Service
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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 and Cooling Services in Wauwatosa

Your Wauwatosa HVAC Experts since 1929

Thielmann & Son Heating and Cooling is here to assist you with all your HVAC needs in the Wauwatosa area. We want you to enjoy the Hank Aaron Trails without worrying about your home’s HVAC. With over 90 years of experience, we can ensure your systems work efficiently for comfortable temperatures at your home or business. We dont want you to worry about your homes HVAC, we want you to spend more time enjoying the Hank Aaron Trails. For HVAC services in Wauwatosa, look no further than The Thielmann Group. Contact us online or call (262) 299-6197 to get started.

Heating and Cooling in Wauwatosa

With our expert team and top-notch services, we guarantee the highest standards in equipment sizing and installation. Our heating products, such as energy-efficient and quiet Lennox furnaces, will give you peace of mind.
  • Gas furnaces
  • Oil furnaces
  • Heat pumps
  • Packaged units
  • Boilers
Our furnace repair technicians are ready to promptly restore your heat. We understand the urgency of “no heat” situations during harsh Wisconsin winters. Our NATE-certified specialists are available 24/7 for emergencies and can service and repair all makes and models.  

Wauwatosa A/C Installation and Repair

If you’re in need of a new air conditioning system for your home or business, we have the perfect solution to keep you cool and within your budget. Our experienced team ensures flawless installations that are perfectly sized for your space. Our technicians are factory trained, NATE-certified, and equipped with years of knowledge to install central air or ductless systems with superior workmanship. We work on all types of cooling systems, including:
  • Air conditionersWe can work on all models of air conditioning systems for residential and commercial properties.
  • Heat pumpsWe can repair, replace, or maintain energy-efficient heat pumps that deliver warm air inside and outside the home.
  • Ductless mini-splits: We can service ductless HVAC units that provide total climate control for single rooms.
We offer high-quality air conditioning products from Lennox, Daikin, Carrier, Bryant, and Mitsubishi. These systems are known for their exceptional performance and energy efficiency. With our products, you can stay comfortable during hot summers in Southeastern Wisconsin while also saving on energy bills. Contact us for all your air conditioning needs in Wauwatosa.

Why Choose The Thielmann Group

Since 1929, our team has been the trusted choice for high-quality residential and commercial HVAC services in Wauwatosa and beyond. Our NATE-certified technicians can service all brands, install Lennox-brand units, offer 24/7 emergency care, and more. You can count on us to cover all your HVAC needs! Plus, we offer upfront pricing, financing optionsspecial deals, and a job well done. Contact us online or call (262) 299-6197 to schedule the HVAC services you need.
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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.