So pleased with my experience with Thelen mechanical! They were able to respond the same day to an urgent plumbing need and were communicative, professional, and quick.

Laura B.

I had another company to my house after my AC went out. The other company quoted me 12K saying my AC was not fixable. Nick with Thelen Mechanical came out and had my AC running within 30 minutes. Nick was amazing, professional, and reassuring. Needless to say, I will be calling Thelen Mechanical for all future needs!

Sydney K.

Friendly same day service! They were honest and not price-gouging which was refreshing. Thank you so much!

Babe R.

The service was professional, knowledgeable, and an affordable price! No price gouging here! Extremely competitive!

Andrew S.

The Thelen Mechanical guys are absolutely Phenomenal.. They explain everything in detail to you. There hands down the easiest people I've had to work with.

Dave G.

Thelen Mechanical was great our air conditioning unit went out on one of the hottest weeks of the year. They came out that same day to look at the issue. They were able to replace the unit the next day! Great customer service and friendly. I highly recommend them to anyone!

Andy F.

I called mid-afternoon on a Saturday (The 4th of July) because my air conditioner broke down. Adam was at my house first thing the next morning. He was knowledgeable, explained what the problem was, and had it fixed in no time. I was impressed with the ease of making the appointment and the prompt and professional service. I also appreciated the email and text information I received throughout the process. I definitely recommend Thelen Mechanical and won't hesitate to call them again in the future!

Angie F.

Our AC unit stopped working over the holiday weekend, they were able to send someone out to take a look the same day we called for service. Dillon was awesome, he got everything up and running again. He told me what he was doing each step of the way and explained to me the readings meant and what was going on. I hope we don't have to call for service anytime soon, but if we do, we will be calling Thelen Mechanical. Thank you for your help!

Samantha D.

Thelen Mechanical promptly responded to my service call on a very cold weekend. They were able to replace the furnace and a.c. the next day. Everything was done swiftly. Quality of the their work is second to none. Really appreciate their service.

Shashank P.


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Ready to serve your Big Lake area home heating and cooling needs. Need furnace or air conditioner work? We're a dependable, trustworthy, and open-minded team, ready to work hard for our customers. If interested in working with us, please send us a message or call!