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Installation

Geothermal Installation Services

Manufacturer's Warranties | Free Estimates

Emergency Service 

Manufacturer's Warranties 

Free Estimates

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Control the Climate in Your New Building

When you are having a new building constructed, the HVAC must be a part of your plan. For this, Toennies Service Co has the perfect solution.


We will install a brand-new geothermal system that gives you full control over your new building's climate.

Expert Building Design Tips

When you have got better insulation, your HVAC will be able to work more efficiently. This means that you can get a lower capacity - and less expensive - system!


That is why for the optimal performance of your geothermal system, we recommend that you make your building envelope as tight as possible.

Seamless Geothermal System Installations

Call us for 24/7 emergency services!

(618) 248-5130

(618) 248-5130
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"The single largest water furnace geothermal dealer in the United States."

- Paul Habighorst

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Toennies Service Co

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