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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.
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Heat Pump vs. Furnace: How to Choose the Right Heating System for Your Home
Heat Pump vs. Furnace: How to Choose the Right Heating System for Your Home

Choosing between a heat pump and a furnace can be tough. The main difference? Their performance. Both of these systems suit different environments and preferences....

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The Benefits of Regular Air Duct Cleaning
The Benefits of Regular Air Duct Cleaning

When was the last time you cleaned out the air ducts in your home? For many people, the answer is probably never, or perhaps years...

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How to Improve the Indoor Air Quality in Your Home: 5 Factors and Ways to Respond
How to Improve the Indoor Air Quality in Your Home: 5 Factors and Ways to Respond

When spring has sprung, so have the many allergens and contaminants that come along with it. The springtime can bring about fantastic weather, but it...

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R-22 vs R-410A Refrigerant
R-22 vs R-410A Refrigerant

If you have a central air conditioner, it’s important to be familiar with refrigerant. The refrigerant in your system is utilized to cool the temperature...

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Top Causes of Bent Air Conditioner (AC) Fins and Ways to Respond
Top Causes of Bent Air Conditioner (AC) Fins and Ways to Respond

Bent air conditioner (AC) fins can cause a slew of issues to your unit. Some problems have quick fixes, while others are permanent damage. If...

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Why Is My Heat Pump Fan Not Spinning? 5 Issues and Ways to Respond
Why Is My Heat Pump Fan Not Spinning? 5 Issues and Ways to Respond

A heat pump is a great way to warm your home. They are often more cost-effective and better for the environment because they are electric....

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Buy a Furnace, Get a Free Air Conditioner – A Homeowner’s Guide
Buy a Furnace, Get a Free Air Conditioner – A Homeowner’s Guide

Home comfort all year round is not just a luxury; it’s part creating a living space that’s truly yours. This is particularly true when it...

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Furnace Tune-up? Is it worth it?
Furnace Tune-up? Is it worth it?

With the chilling Wisconsin winter just around the corner, we often receive inquiries from our customers, wondering, “Do I need a furnace tune-up?” And our...

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What Is a Good Furnace for Your Southeast Wisconsin Home?
What Is a Good Furnace for Your Southeast Wisconsin Home?

When winter sweeps through Southeast Wisconsin, you need a reliable furnace to keep your home cozy and warm. The right furnace heats the interior without...

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New Slinger Location
New Slinger Location

Since 1929, The Theilmann Group has been heating and cooling Southeastern Wisconsin. We’re thrilled to announce the newest addition to Theilmann Group’s locations in Slinger,...

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Why Choose the Thielmann Group?

Offering Reliable Heating & Cooling in WI for Over 90 Years
  • Same-day services
  • Licensed & insured
  • NATE-certified & background-checked technicians
  • Free estimates on replacement quotes
  • Maintenance plans available
  • Upfront pricing & financing options
  • Military, veteran & senior discounts
  • A+ rating from the Better Business Bureau
  • Lennox Feel the Love partner
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Phone:
(262) 299-6197
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Office Hours

17020 W. National Ave
New Berlin , WI 53151

105 W. Commerce Blvd
Slinger , WI 53086

400 W. Drexel Ave
Oak Creek , WI 53154

201 S. Pine St
Burlington , WI 53105

107 N. Milwaukee St
Waterford , WI 53185


Menomonee Falls

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Monday - Friday

7:30AM – 4:30PM

24/7 Emergency Service

Our Locations
New Berlin
17020 W. National Ave
New Berlin , WI 53151
Slinger
105 W. Commerce Blvd
Slinger , WI 53086
Oak Creek
400 W. Drexel Ave
Oak Creek , WI 53154
Burlington
201 S. Pine St
Burlington , WI 53105
Waterford
107 N. Milwaukee St
Waterford , WI 53185
Menomonee Falls
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