We can service your castle, whether it is a 25,000 foot home with a swimming pool or a small trailer.
We install and service the latest heating and cooling technologies, including many types of heat pumps.
A proper maintenance will help extend the life of your equipment. Our CMA's will help detect potential problems, therefore preventing you from going without heat and cooling. Now that's PEACE OF MIND. We install and service the latest heating and cooling technologies, including many types of heat pumps. Please take a look at the discount coupons we offer for our services. Air conditioner repair is one of the best most cost-effective ways to stay cool in the summer and keep your system running at full capacity. No job is too big or small, and we deliver 100% customer satisfaction on every project. The U.S. Government offers several Federal tax credits to citizens who have had Home Efficiency unit replacements over the last  few years. Take a moment to see if you are eligable for any of these tax credits.
Grand Oaks Heating seeking qualified HVAC Installer in Foristell, MO.
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Grand Oaks Furnace repair service in Foristell, MO.
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As an ACCA member, Grand Oaks Heating & AC is here to help you with your Furnace repair in Wentzville, MO. We have NATE certified technicians for your Furnace system tuneup in Wentzville, MO. Grand Oaks Heating & AC technicians can repair your Furnace in St Peters, MO.

Grand Oaks Heating & AC of Foristell, MO Donates to support Breast Cancer research.

Our primary goal at Grand Oaks Heating & AC is to keep your home comfortable for you and your family.

This site is specifically designed to help you become an informed consumer when it comes to your home's heating and cooling systems. Go ahead, explore. The pull-down menus make it easy. Not only will you learn how these systems work, but also how to shop smart and protect your investment. If you're not sure where to find help with a specific question, try our site's Search Engine. And, don’t miss the 'Answers and Information' section on our menu to learn about your home's mechanical systems and simple things you can do to save money and get the most from them.

License# M2684A

82 Clairen Drive
Foristell, MO 63348

(636) 926-2007

If you're interested in replacing your old outdated—and probably inefficient—heating or cooling system, check out how we assure your satisfaction  when you use us.

 Learn how you can save money through our Heating & Cooling Maintenance Plans.

Curious about what's inside your home's ductwork? Here's an informative page to help
you decide—
is duct cleaning for you?


Tired of adjusting your thermostat to get comfortable, maybe a zoning system  can help.

• NCI-National Comfort Institute Inc
-Carbon Monoxide & Combustion
• Analysis Air Balance Certified
• AmerenUE Check Me Plus Program

Grand Oaks Heating & AC accepts all major credit cards for their Heating repair service in Foristell, MO.

You'll find we take our job seriously and value highly the trust that is placed in us. To understand why we go so far beyond what others do by investing in the extra training and equipment we believe necessary to protect your home and family properly, take a moment to view our short 30 second video that best explains "why we do it"...and "why it matters."

By doing what it takes to ensure each customer's complete satisfaction, Grand Oaks Heating & AC is welcome in more homes in St. Louis Metro & Rural than any other contractor. We invite you to give us a call.

We have techs available for your refrigeration maintenance, repair or replacement in Wentzville, MO.
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Grand Oaks Heating & AC, is a Missouri Heating, Cooling, Plumbing, Air Conditioning, Geothermal Heat Pump, and furnace repair, service, replacement and maintenance Company located in St. Charles and Warren Counties. Grand Oaks Heating & AC employs only the best plumbers & technicians for plumbing repairs, air conditioner repairs and, furnace repairs as well as all air conditioner replacements, furnace replacements and boiler replacements St Charles Mo, St Peters, Wentzville Mo, St Louis, St Charles city. We work in St. Louis, Lincoln , Warren and Pike Counties in Missouri. In Illinois we service E. St Louis,Alton, Fairview heights, Granite City. To set-up a repair service estimate or replacement estimate, call (636) 926-2007. Grand Oaks Heating & AC is an authorized factory dealer of many brands and services all furnace, AC, humidifier, filter, thermostat and water heater brands including Carrier, Bryant, Payne, Trane, Lennox, Rheem, Ruud, Amana, Crown, Frigidaire, Gibson, Goodman, Lochinvar, Maytag, Weil McLain, AO Smith, Kohler, American Standard, GeoExcel, General, Aprilaire, Honeywell, White Rodgers, Dynamic and Skuttle.