Summer Pre-Season Special $109.95*
Summer Pre-Season Special $109.95*
We'll work to accommodate your busy schedule. CLICK HERE TO LEARN MORE
Financing Available!
Financing Available!
Apply Online Today! CLICK HERE TO APPLY
24/7/365 Emergency Service
24/7/365 Emergency Service
Call us anytime, day or night! (636) 680-2100
Knowledgeable Technicians
Knowledgeable Technicians
IFS technicians receive continuing education to provide you the best service possible
About IFS Residential

About IFS Residential

For over 50 years,  IFS - Residential Services (formerly Air Masters) has been serving the St. Louis area and surrounding communities. Our dedication to providing top quality service and support has not changed since our first service call in 1966. What began as Air Masters, a 1 man service shop, has grown into a major corporation with over 300 employees and nearly 200 service vehicles.  While IFS has become one of the premier mechanical contractors in the state, our goal is, and will always remain offering stellar service to all of our customers. ...

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IFS now offers financing through FTL Finance to assist with your residential HVAC purchase!

Apply Online Now!

Feature Posts

Promotion – Spring Pre-Season Special

When should I replace my Heating and Cooling Equipment?

Residential Energy Efficient Rebates

Blog Posts

Winter HVAC Preventive Maintenance Tips

The winter season is here, which can only mean one thing; now is the perfect time to start preparing...
Winter HVAC Preventive Maintenance Tips

Spring Seasonal Clean and Check

Spring is in the air!  In St. Louis that means two things; Cardinals Baseball is almost here, and it...
Spring Seasonal Clean and Check

When should I replace my Heating and Cooling Equipment?

When should I replace my Heating and Cooling Equipment? Here are some of the signs that it may be...
When should I replace my Heating and Cooling Equipment?

The Scoop on Programmable Thermostats

Everyone knows that turning your heating and cooling equipment off when you are not home is a great ...
The Scoop on Programmable Thermostats

Testimonials

Tom & Ginny M.
16 September,16
We have been extremely pleased with IFS. The few times we have called for service, IFS has been prompt to respond with excellently trained...
Mark R.
19 August,16
When my AC stopped working I called around to find the best deal on an efficient system and went with IFS.  I will never use anybody else.
Laura A.
19 July,16
I called IFS on one of the hottest days of the year.  My new born son and I were stuck at home in the heat.  They got out to us the same day...
Tom M.
29 June,16
I will recommend IFS to my neighbors, family and friends. I was very impressed. Thank you for the OUTSTANDING SERVICE!!!. Well done