JLM Heating & Air Conditioning

08/22/2026

Here’s our latest installation, this one turned out to be super labor intensive, but the final results are pretty amazing! Airflow increased almost 40% with new straight duct work and the second floor is 10 degree cooler than before! We love it when our customers say it was everything they hoped it would be.

08/10/2026

In the world of HVAC you never know what your next adventure is going to be. This is one of the many things that keep this occupation fun, interesting, and on your toes. Good Morning Creve Couer Airport!

08/05/2026

This one is worth the read (Hopefully a like and a share)! Long story short, a new customer had us come out for an estimate. After a few minutes of conversation we came to the conclusion that his system was starving for air! To put it in simpler terms the pressure of the system would have made a cardiologist take a patient straight to the surgery room! After our surgery performance we got this customers pressure so good the doctors prescribed some cookies for dessert!

In heating and air conditioning it’s always the ABC’s, airflow before charge. We proved the system was running with improved airflow by repeating the tested we did before we replacement and increased airflow by nearly 50%!

The final product looks just as good as it is performing!

08/01/2026

Some days it’s just experience that’s needed to resolve an issue another person couldn’t find. Needless to say within a short time period we had this customer back up and running.

If you found this helpful give it a like and share!

07/27/2026

If you ever wonder why HVAC contractors have maintenance plans……. Watch this 30 second video.

07/27/2026

07/24/2026

Even Picasso wouldn’t be able to match our installations with a blank slate! This customer is going to be ecstatic when they walk into the new office area and are met with crisp cool air!

07/22/2026

Some days you really have the chance to shine and show off what the team can do! We love these opportunities and take full advantage of them! Now imagine what we can do for you 😊

07/08/2026

Saw it on another page, but here’s your reminder to change your filter!

06/25/2026

Check this quick one out!

The most important 8 hours of any new heating and cooling system happens on the day of install! The little details matter more than anything.