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Call Grand Oaks Heating & AC for great Furnace repair service in St. Charles MO
(636) 926-2007
Serving St. Charles County, the Metro area, and Lincoln and Warren counties
Grand Oaks Heating & AC has certified technicians to take care of your Furnace installation near Wentzville MO.



Our staff at work

We keep you comfortable. We save you money.

Emergency service any time, any day at 636-926-2007 or 800-852-9006.

Grand Oaks' home comfort

You plan your days and your future around your spouse and family. With Grand Oaks' installation and maintenance, you are assured of a safe home environment and quality heating, cooling and comfort equipment.

We can also save money in ways you might not expect. With a humidifier, you can often lower your thermostat in the winter, and your family will feel just as warm. An electronic air filter can reduce dust, mold and microorganisms during allergy and cold seasons.

We can service your castle, whether it is a 25,000 square 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

We install new equipment based on a government-recommended load calculation that accounts for how your home is built, improvements, and your family and lifestyle. This saves money and results in even heating and cooling

An improper installation can cut the life of your unit in half. Our technicians are trained continuously by manufacturers and professional organizations.

We can test air quality and install filtration and zone control for your comfort

You can take a hot shower for as long as you want with our hot water heater

We will buy your new Grand Oaks system back within one year of installation, if you are unhappy with it for any reason.

Lifetime warranties available on some models

When you want to feel comfortable and enjoy efficient heating and cooling, call 636.926.2007 or use our Contact Us/Maps.

24 Hour Emergency Service • Call Us Today • (636) 926-2007 • or • Fill Out Our Online Form
We service most Furnace brands and models near St. Charles MO.
Business Address:
82 Clairen Drive
Foristell, MO 63348
Contact Us
Schedule your Furnace replacement in Wentzville MO.
Company Phone:
Phone: (636) 926-2007
We offer 24/7 emergency Furnace repair service in St. Charles MO.
Office Hours:
Monday- Friday 8:00am-5:00pm
24 Hour Emergency Service
We offer 24/7 emergency Furnace repair service in St. Charles MO.
License Number: