Heating • Air Conditioning • Indoor Air Quality
Residential & Commercial Services
(920) 845-2062
Heating • Air Conditioning • Indoor Air Quality


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"Technicians ~ James & Brent were amazing!  Bunch of friendly people - Love my new furnace!"
Alana - Luxemburg, WI
"Did an excellent job, explained everything in great detail!"
Doug & Joan - Green Bay
"Extremely Happy! Because of a referral,Jeff came all the way to New London for a service call to keep our furnace running in the bitter cold until we could have his team put a new one in. They do EXCELLENT WORK AND VERY KNOWLEDEGABLE. Thank You Guys!"
Kim - New London
"Wonderful customer service! Fantastic employees! Thanks again for a great service tune-up for our home. One less thing to have to worry about!"
Julie - Green Bay
"Originally Jeff went out of his way to do an immediate furnace replacement due to the pending complete failure of our fuel oil boiler system. He completely analyzed our heating needs and offered needed recommendations, correctly utilize our various zone set up. Therefore, we recently had our central air system completely maintained by this employees with great results"
Chris - Casco, WI
"Excellent service, called because internet search showed American Standard certification. Two other contractors were unable to fix the intermittent flame (pressure switch) problem. Ultimate Air's thorough knowledge of American Standard and additional equipment (testers) to check flows & Pressures were a welcome & pleasant surprise"
Bradley E. - Howard, WI
"Super Service, very pleased with their work"
Dan & Sue D. - Casco, WI
"Jeff, Eric & Paula are always so helpful, friendly and always on time. They go out of their way to help you. But the best part, they really know what they are doing and they know everything about their air conditioning and heating units. This has not always been the case for us"
Evan & Darlene - New Franken, WI
"Working with Jeff and his team at Ultimate Air, was a pleasure. Jeff was prompt and he came when our furnace went out, even though it was a Sunday morning. He was very knowledgeable, as was his team, and he took the time to tell us about the different products offered. I am completely satisfied with the work they did and I have complete confidence in my new furnace"
Amy V. - New Franken, WI
"I highly recommend Ultimate Air in Luxemburg. Jeff & Eric were super in all phases of the new system from start to finish. Thank you for a great company"
Brad A. - Casco, WI
"I am extremely satisfied to have my furnace serviced by Jeff Blemke (Ultimate Air). If I have a problem he is right there to fix it and explains everything very well. I couldn't find anyone more professional & prompt."
Kathy D - New Franken, WI
"They were just awesome people."
Mike L. - Luxemburg, WI
"American Standard should be so proud to have Jeff & Eric working for their company. They have helped me in so many different ways, nothing was ever too great to ask."
Marilyn I. - Casco, WI
"When we built our home, Jeff put in our furnace & central air. Jeff is an outstanding person. Takes time to explain what he does & gives you the cost. Went out of his way to complete installing our furnace. Can't say enough about his kindness. Also very pleasant with his service tech, Eric - also another outstanding person. Very friendly & trustworthy - explains everything that he does while he is here and answers all my questions. I look forward to having Eric come back."
Terry & Mary Jane C. - Green Bay, WI
"I'd continue to use this contractor always."
Francis & Karen K. - Pulaski, WI
"Very trustworthy and answer any questions I may have. Kept work area clean and neat. Comfortable that they know what they are doing."
Yvonne P. - New Franken, WI
"Jeff is amazing. Professional, Friendly, Knowledgeable and I would recommend him to anyone. Our air conditioner went out 2 days prior to our wedding and we had a house full of people staying with us from out of town. Jeff responded immediately and we were able to focus on our wedding plans not air conditioning problems. Jeff is our hero for saving our day!"
Chad W. & Shaina A. - Green Bay, WI
"Great service. They know what they are doing. Very clear as to the scope of work"
John & Sheila N. - Luxemburg, WI
"Excellent Service!"
Jeff & Renee B. - Green Bay, WI
"Very good experience"
Chad & Nancy V. - Luxemburg, WI
"Could truly tell Jeff is knowledgeable & believes in his product. Very courteous & pleasant to work with. Will call them again!"
Quincy & Stacy G. - Luxemburg, WI
"Awesome Service! Thank you!"
Maria A. - Green Bay, WI
"Ultimate Air... Jeff and his crew were Super Great!"
Mark & Cindy K. - Sturgeon Bay, WI
Joe W. - Green Bay, WI
"It was 9 p.m. and was to get to -35 wind chill, when Jeff was called. He came in 20 min."
Lily C. - Luxemburg, WI
"Very reliable, fast acting when I really needed them. Will call them again."
Dale W. - Luxemburg, WI
"I have recommended Ultimate Air to several others"
Sally H. - Dyckesville, WI
"Very happy so far! Contractor was very friendly!"
David C. - Sturgeon Bay, WI
"Very pleased"
Judy B. - Appleton, WI
"Would Call Again"
Carl F - Sturgeon Bay, WI
"Great to support local businesses and families. Great to work with, will recommend!"
Paul & Emily J. - Green Bay, WI
"Very pleasant"
BJ & Shannon S. - Luxemburg, WI
"Very knowledgeable & professional"
Wade S. - Luxemburg, WI
"Excellent Service!"
Al H. - Luxemburg, WI
"Excellent Service all way around & very prompt & knowledgeable"
Ron & Marsha B - Luxemburg, WI
Jeff & the other techs were great to work with. They did a fantastic job installing our new Lennox air conditioner. Paula the office manager was especially helpful in guiding us in the right direction. Great company to work with. We will be using them in the future for all our HVAC needs.
Jim & Chris Grall