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Our Team

Our Team

Adam Golubski
PE, Owner
I graduated from Kansas State University in 2002 with a master’s degree in architectural engineering. I practiced mechanical system design for 14 years. I also worked as a project manager for a commercial contractor. About 10 years ago I became highly interested in the installation of residential HVAC systems and have been installing and servicing them ever since. I take great pride in open communication with our clients and assure they receive the quality of service deserved.
Andy Mitchell
PE
I graduated from the University of Kansas in 1994 with a degree in mechanical engineering. I worked for 23 years designing building HVAC systems. 10 years ago I began servicing and installing residential HVAC systems and realized that I enjoyed hands-on engineering far more than conceptual engineering. I currently hold both a professional engineering and a master mechanical contractor license. I specialize in HVAC system service and like the challenge of troubleshooting faulty system operations.
Mike Jeanneret
Lead Service Technician
Mike has been in HVAC and plumbing for the last 19 years. Prior to joining our team, Mike was a service manager specializing in service, maintenance and training. Mike enjoys meeting with customers and teaching them how to operate their heating and cooling systems. Outside of work, Mike spends his time coaching his daughters’ soccer teams, improving his golf game, traveling with his family and helping his wife foster homeless kittens.
Garrett Hernandez
Service Technician
Garrett has over three years experience in the HVAC field and one year of trade-specific schooling. When he’s not working with HVAC equipment, you can find him fishing at our local lakes or hunting in Western Kansas.
Robert Hollander
Lead Installation Technician
Rob is a second-generation HVAC technician with over 25 years of experience in heating and cooling and has truly done it all – from geothermal, boilers, change-outs to new construction. When he’s not on the job, he enjoys barbecuing, camping, fishing, spending time with his wife, Heather, and family, and his dog, Abby.
Evan Thomas
Installation Technician
Evan has over two years of HVAC installation experience and one year of trade-specific schooling. In his free time, he enjoys playing the drums, camping and fishing.
Andrea Coomer
Office Manager
Andrea (Andy) came to us with a background in new construction estimation and client relations. She lives in the Northland with her family and enjoys horticulture, decorating and keeping up with her three boys and two dogs.

Customer Testimonials

See what our happy customers have to say!

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Mike and his apprentice always do excellent work. Prompt, efficient, honest and dependable. I recommend without qualification!

Tom M

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I own several rental homes throughout Johnson County and exclusively use Delta T to service and install at all my properties and my personal residence. Have referred them to several friends, family and coworkers without hesitation. Professional, efficient and always come through with high quality work at an affordable price.

Matthew R.

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We were very pleased with Adam and the crew. We found them knowledgeable, professional and competitive in price and we’re happy to recommend them.

MARK AND DENISE T.

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Good experience with Delta T Heating & Cooling. Service Tech Garrett was on time, professional, and personable.

Timothy Newton

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After getting several estimates and talking with 3 other companies, it was clear Delta T was the right company to replace our aging furnace and AC unit. They offered a very competitive price but what really impressed me was Adam’s knowledge, attention to detail and desire to make sure the installation was perfect. I highly recommend these guys, you won’t be disappointed.

Fred B.

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They were great! Garrett the technician was very nice and thorough. I was able to make an appointment quickly, and their prices were reasonable!

Myra Monberg

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I was so impressed With Delta T Heating & Cooling. They were a phenomenal company to work with and I will continue to use them! Thank you so much to Adam for taking care of our AC!

Beth A.

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Great service. They gave me 3 options for my house. Explained the differences and installed a great system. They did great work at a great price. Love the new HVAC.

Art W.

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Greatest crew! Very knowledgeable, and were QUICK to get my issue resolved-Thank you Adam, for getting me scheduled so quick-and thank you Mike & Garrett for your expertise and quick resolve

Rebecca Wright

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Delta T is my “go-to” HVAC service company. Always very prompt and extremely reasonable on price. You will be glad you called Delta T.

Joan Z

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Every interaction with Delta T has been very positive and helpful! Mike went goes and beyond to help explain things & the maintenance plan has been very beneficial for us! Highly recommend!

Jenn T

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Delta T has provided service for my HVAC system and water heaters at multiple properties for the last 4 years. Quick service, good communication, fair prices. I trust them implicitly.

Adriane O

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The tech came and checked our heating system, got it all ready for winter, and explained everything I needed to know, for a reasonable price. Bonus, he also explained 2 or 3 ways why upgrades wouldn’t be necessary, and how to prolong the life of the system. Will definitely continue to use them.

Jeff T

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They fit me in their schedule pretty late at night. Theres a storm coming and they were understanding and fixed my issue quickly. I purchased their program to have them come out annually now. Thank you guys!

Spencer M

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Mike Jeanneret was our repairman and he thoroughly explained everything he was doing and why he was doing it. He didn’t charge us for anything we didn’t need and I feel confident that he was honest with his work. Would recommend to anyone!

Michael S.

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I’ve used Delta for several years both at both my personal residence and my work building. They have always responded quickly and efficiently. I’ve been so happy with their service and never trust anyone else

Jaeme S

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Mike is absolutely the best! Honest, kind and very professional. I've dealt with a few other companies before going with Delta T....it was like night and day! So refreshing to deal with an honest and affordable company. Thank you so much!!!

Gina M

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Punctual, courteous, prompt & reliable service - the perfect recipe for great service! Highly recommend to others!

Kristin Miller

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Mike Jeanneret was/is absolutely fantastic He spent as much time as necessary, and then a bit more to explain everything that he did and all the ins and outs of our system. We use DeltaT for yearly maintenance, and could not be happier. Highly recommend Mike and DeltaT

Bradley N

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Efficient, knowledgeable, reasonably priced. Garrett and Daniel were very helpful and were fantastic at explaining things to me. Highly recommend.

Tori Goldsmith

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