Heise Heating & Air Conditioning LLC

Have had good experience with this company until this latest service to my A/c. (Previous experience include new Heil furnace in 2023, multiple follow-ups to that install and a/c cleaning, Generac issue) Call was regarding my A/C not working, they determined coils were frozen and needed about 3 ish# of refrigerant. They recharged it and stated it was holding charge when they left. Was charged $600 for a/c- not functional 3 days later after the fix and refrigerant refill. Did not offer to rectify the situation free of charge, only to charge for additional service and refrigerant. (They did come out after I an emergency Sunday visit at no charge - We determined my refrigerant was completely empty when they came back) and when they pressure tested it, it leaked 1psi/min, slow but steady leak

⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️ 5 STARS IS SIMPLY NOT ENOUGH! MY FURNACE WENT DOWN WHILE AT WORK & MY HOME WAS FREEZING COLD! I CALLED HEISE & She said a few hrs. DAN called me back within 15min. & said he was on his way! ⭐️ It was fixed within the hour. The next day it went out Dan & a co worker came right away. Turns out I needed A NEW FURNACE! I'VE SERIOUSLY HAD THE WORST LUCK LATELY. CANCER, GREAT FRIEND DIED, BILLS PILING UP FROM BEING OUT OF WORK. SERIOUSLY STRUGGLING! YOU KNOW. LIFE THROWS U CURVES. I almost started crying right in front of 2 total strangers!!! Then his co/worker smiled & said aww. DO U NEED A HUG? I LAUGHED & HE GAVE ME A HUG. THAT HUG AT THAT MOMENT WAS EXACTLY WHAT I NEEDED! SUDDENLY I FELT CALM & KNEW EVERYTHING WLD BE OK. WAITING FOR PARTS TILL MON. IT'S JAN. 23rd 2026 co

Heise Heating got my furnace diagnosed ordered new parts and up and running with technicians Al -Nick both very knowledgeable and friendly took a video to show me what the problem was Very reasonable price no hidden costs if you have heating or cooling problems I suggest you contact them pretty sure they are the best contractor around They are 5 star and above George Hoffman

Professional and efficient. Our furnace went out and Dan was able to fit us in to his schedule that same day to travel to Oshkosh and fix our furnace. Within minutes he recognized the issue and was on his way to pick up a new part. Came back and quickly replaced the component and our furnace was able to get back up and running. I’d highly recommend Heise Heating and Cooling.

Fair pricing, fast service, and great people!! We first met Kevin 5 years ago when we started renting our old house. We recently bought our own home and when the furnace started acting up he was the first person to come to mind to call! I stopped in the office, asked his lovely wife Karen if he'd be able to stop by to take a look. And within hours he was here and had our furnace working within 5 minutes! Explained what had happened and even swapped the filter out for me all for a very fair and reasonable cost!! He's our go-to man for anything heating/cooling!!