Thanks for stopping by

You'll find everything you need right here. Our team is on top of (and inside, and around) all things HVAC. We work with the top manufacturers, and our customer service is the reason we've been in business 65+ years.

If you have any questions or suggestions, please drop me a line through the contact page. Yes, I do read the emails personally. Also, check back because we change up our special offers fairly often. Thanks for visiting.

Angie's List Super Service Award

Dave Harster

Latest News

Things on the Cards' mound might be okay, but it's another brutal summer in Mound City. The next few weeks are going to be intense – in some ways, probably the most oppressive heat we've seen for a long time. And for your workhorse AC, that could mean trouble. ...


Why Harster?

“Thank you for your prompt service on my failing air conditioner this past weekend. We woke up Saturday morning to plan for my son’s birthday party and found we had almost no cooling. I called your exchange service at 9 a.m. thinking this would be a long shot. To my surprise, your service technician, Dan (#19) called me at 9:10 a.m. and was in my driveway by 9:30 a.m. He had us up and running temporarily, came back Monday and found a leaking A-coil. Tuesday at noon your technician Jim had the A-coil replaced and the system recharged and running. This is truly service that exceeds expectations. Thank you again!”
 —Conrad O.


Our Billboards

You've seen them around town, and we'll showcase them here.