From routine maintenance to emergency repairs, the HVAC technicians at 4 Seasons Heating & Cooling have got you covered. Proudly serving Windsor, Missouri since 2009.

What we do

Our Services

We serve both residential and commercial clients, and offer a variety of money-saving solutions. Our dedication to delivering exceptional service, as well as only using the highest-quality parts has made us the HVAC contractor of choice within the communities we serve!
  • RHVAC Sales & Installation
  • RSeasonal Maintenance
  • RHVAC Unit Replacement
  • RAC System Repair
  • RWater Heaters
  • RHeating System Repair
  • REmergency Service
  • RGas Line Repair & Installation
  • RElectrical Repair & Upgrades
  • RSump Pumps
  • RGenerators
  • RMini Splits


Our Products

We proudly use the highest quality products from Rheem, Lennox, Mitsubishi and more.


We use Rheem for home generator systems, tankless water heaters, gas furnaces, heat pumps & air conditioners.


We use Mitsubishi Electric products for the majority of our Mini Split air conditioning units.

We are also your local Mitsubishi Diamond Contractor certified dealer.


We proudly use Lennox for our furnaces, heat pumps and air conditioners.

Who we are

About Us

4 Seasons Heating & Cooling was founded in 2009 by owner and lead technician, Andrew Irby. We provide a wide-range of heating, cooling, and electrical services to residents & businesses in Windsor, MO and the surrounding area.

Since operations began, we’ve had one goal in mind –to provide outstanding service in a field that we’re passionate about. Over the years, we’ve achieved this goal one happy customer at a time!

We strive to meet and exceed our customers’ expectations, and our passion has grown right along with the business. We would love to be your local HVAC company, so contact us today!

Owner and lead technician, Andrew Irby, pictured with his wife Chelsea, and daughter, Violet

Our clients


Andy is an amazing to work with, hard working, honest person. Would recommend him 20/10 times . If you need someone for your AC or HVAC this is your guy!

Mischa Thompson

This is a wonderful company they go way above and beyond what they have to do. The also have very reasonable prices. Good people all the way.

Jerry Shreve

Fast, affordable, friendly…and it’s done right!

Bobbie Phillips

We arrived at our house on a Saturday late afternoon and it was 38°. We sent a message and they called us back right away. Even though he had another call, he still came afterwards to fix our furnace. We are so thankful and would recommend 4 Seasons for any HVAC service.

Mike Brinkmann


Get in touch