Flock's Heating & Air Conditioning

Flock’s Heating and Air Conditioning was founded in 1960 as Flock’s Sheet Metal by Clarence Flock. Sylvester & Ramona Flock bought the business from Clarence in 1970. Two of their sons, Mark and Anthony (Tony) bought the business in 1985 from Sylvester and Ramona. In 1998 a third son, William (Bill) became a partner. In 2002 the name was changed to Flock’s Heating & Air Conditioning to better reflect the nature of the business. In 2008 Flock’s Heating & Air Conditioning was recognized as the ClimateMaster “Wisconsin Geothermal Contractor of the Year”. In 2013, Mark Flock was elected President of the Wisconsin Geothermal Association (WGA), the unified, professional consortium (non-profit) of contractors, manufacturers, design engineers, utilities, educators, and others dedicated to the promotion and growth of Wisconsin’s geothermal heating and cooling industry.

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Reviews | Flock's Heating & Air Conditioning

Mark M

Highly recommend Flocks! We just had a new furnace installed. Excellent service. We worked with Dean on the set-up & quotes. He gave us numerous options to fit our home & budget. Tim & Jordan did a perfect install. Great work!

Mary A.

Had to have a new furnace installed and Flock’s as usual did a wonderful job. Came on schedule. Furnace installed quickly and house is toasty warm. Thanks to Travis and Brandon for the great work. And thanks to Adam who always does my annual furnace check!

Michael F.

The guys at Flock we’re great, my Geo system was installed by a poor contractor closer to my area. Flock straighten it out and then came back when I had problems with the system again. They were great and made sure the parts were covered under warranty. Great company and service.


Even have a service company you have used for many years but the service has gone downhill and still you keep going back. That was me till I bit the bullet and went with Flocks. Excellent service from beginning til end. Bill was my service tech for my central air unit and was very polite, knowledgeable, and didn’t try to wrack up my bill without me knowing all my options. Could not be happier with this company. Thanks Bill!

Steve W.

Flock’s is an honest, well priced business providing great service. Their craftsmanship is great and professional. Travis recently installed a new air conditioning unit for us. He was very polite and explained everything to us very clearly. He added it to the heating system that he installed several years ago which has been running flawlessly. He left the area he was working on looking better than when he arrived. I would highly recommend Flock’s for your heating and air conditioning needs.

Terry K.

I just had a new propane furnace put in by Jeff and Curt and they did a great job. They were very friendly and knowledgeable. I would highly recommend Flocks for your heating needs. Thanks again Jeff and Curt for doing a fine job.