Professional, Quick Service

From a simple filter and belt change on roof-top units to a more complicated “no heat” or “no cool” service call, we can h elp get your whole building HVAC system back on track quickly.


From installing and upgrading your system to helping you choose the perfect unit while staying within budget, we look at your cooling needs from every angle.


From small furnace repairs to big installs and projects we are experts in all of your heating needs. With 15+ years of experience we gaurantee expert professionalism.

Details Matter

We have experience with both industries which allows us to quickly let you know what is needed. Whether it be a small job and budget or a blockbuster change, you can be sure we will be available and ready to work with you to get results we are both happy with.

About Us

Being a local business owner means Big Four has a better understanding of your needs. We are a family in the community just like many of you. Whether you are installing a whole new system or looking to keep your current system maintained and running smoothly we have the knowledge to help.  We also have extensive experience diagnosing problems to help customers stay comfortable and safe in all seasons.

Get Started

Having a problem with your heating or cooling system? Give us a call or fill in the form on the right and we’ll get right back to you! 

(403) 477-5100

Keeping Calgary & surrounding area comfortable in all seasons.