Spray Foam Insulation – for an Energy Efficient Home!

Turn to the experts at ETRU for eco- friendly insulation options.

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We can heat you up or cool you down, we’ve got you covered all year around.

Routine maintenance is important in preventing major HVAC repairs and extending the life of your system. Learn more about HVAC maintenance.

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ETRU provides residents of Southern Illinois with comprehensive HVAC service including new system installation. We sell and install all the leading brands

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HVAC failure is an annoyance that you want fixed quickly. We provide fast, 24hr HVAC repair. No matter the make or model, we’ll have your system fixed fast.

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Here at ETRU, we are passionate about green HVAC solutions. This is why we install a variety of high-efficiency systems including geothermal and inverters. 

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Efficient, Environmentally Friendly Heating & Cooling Is Our Passion

Call us today to learn about all the benefits of High Efficiency Heating & Cooling Systems!
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ETRU is a Full Service HVAC Company who prides itself on fixing things the right way, the first time.

A family owned HVAC business, ETRU is here to fulfill all your refrigeration needs. We are a company that strives to satisfy all our customers, 100% of the time. If you are looking for a company that is full of integrity and honesty then you have come to the right place! ETRU can service a wide range of equipment and can also install a new system if needed. Our technicians are highly trained and certified, so you can be confident you are in good hands.

Proudly Serving Southern Illinois and Southeast Missouri

Why Choose Us?

  • Integrity and Honesty is the foundation of our business
  • We do your job right the first time
  • 100% Satisfaction Guaranteed
  • 24hr Emergency Service
  • We are licensed and insured

  • Our technicians are certified and have over 75 years of combined experienced

Local Reviews

ETRU Heating, Cooling, and Insulation Rated 5.0 out of 5 stars based on 49 customer reviews