HVAC reviews across the US

My parents were having issues with their water heater that another company couldn't figure out, Heise Heating came out and identified the issue in 10 min and had it fixed shortly after. They will be the first call from now on.

Heise Heating and cooling has been our go to for our commercial building. They have been very professional and timely. We are very satisfied with their work and service. Highly recommend. Kevin is very knowledgeable and explains everything they are doing or have done. Will definitely continue to use Heise Heating and Cooling.

Kevin and Karen have been my go to heating, plumbing and AC resource for more than 20 years. Work is excellent. Totally honest and reliable. Helped out when our vacation house had problems and we weren't there. I would recommend without hesitation.

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!!

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.

⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
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 coldest weather in history.
DAN went & got me space heaters to keep my home warm.
Thank God my furnace was still under warranty & I'd only have to pay for labor.
I CAN'T SAY ENOUGH ABOUT THIS CO.
FAST! EFFICIENT! WENT ABOVE & BEYOND THEIR JOBS.
I'VE NEVER EXPERIENCED THIS KIND OF CARE FROM ANY COMPANY!
OH & LETS NOT FORGET "PANDRA" FROM THE MOMENT I MADE THE FIRST CALL SHE WAS IN CONSTANT CONTACT WITH ME.
GREAT PERSONALITY & EXTREMELY HELPFUL THROUGHOUT.
Dan & his crew bring back those small town family values that we ALL miss.
Sorry so long, but HONESTLY!
⭐️⭐️⭐️⭐️⭐️ ⭐️⭐️⭐️⭐️⭐️
10 STARS‼️‼️‼️

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

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. I assisted in finding the leak inside the A/c unit outside. Unhappy about having the giant $600 bill for yet an unfixed a/c unit. Minimally I would have expected them to offer to fix their fix and stand behind their work. I guess I misunderstood what I was asking them to do? Guess shame on me. Live and learn I suppose.

Unfortunately I will be going elsewhere with future business. All of this on top of my daughter being born less than a week later (7/7/25). If I wouldn’t have had an extremely pregnant wife/ newborn I may have tried to work with them, but as the customer, I shouldn’t have had to. Bill below and picture of the inside of my ac unit 4 days after it was refilled.

Pros: communication

Would not recommend. We were quoted $120 an hour for labor and were charged $172.66. We have photos proving the time spent at our residence and google maps to give us drive time but when we questioned them, the reply was, we don't have any way to monitor our labor hours. I am pretty sure in this day an age, that can be monitored. Quite unethical business practice.

Gartman has been providing us reliable service for years. They have honest pricing and provide trustworthy work.

Paid over $6000 for a new radiant heat furnace and found out it had a ONE YEAR warranty. Ridiculous. Have had nothing but issues with it for the last 2 years. Always some new problem with it. Along with a leaking water issue every winter. Parts have been replaced. Just had a FAULTY pump replaced, this years issue, ( it cracked) and I was billed over $600. Would never recommend. Bad warranties, expensive and to many visits to resolve problems.

We have used GMS for service over the years and have been very happy with their service. They just finished installing a new A/C unit and we could not be more pleased. The workmanship from Chad and Brian is awesome. They came in did the work in a very professional manner and the finished project quickly. Wish I had before pictures. Great job guys, much appreciated.

I contacted Gartman to inspect a noise coming from my AC unit. Their website states that they offer free estimates. After looking at the unit, they told me I needed a new compressor, claimed it was out of warranty, and recommended replacing the entire system—something that would have cost thousands of dollars. About a week later, I received an estimate for the repair, but no invoice or charge for coming out.
I chose to get a second opinion and never responded to Gartman’s estimate. The second company contacted the manufacturer and was actually able to get the repair covered under warranty. Instead of paying thousands, I ended up paying only $800.
Weeks later, I received a $170 bill from Gartman for a “diagnostic service.” What frustrates me is that they waited until after I declined their estimate to bill me, and they refuse to honor the “free estimates” claim on their own website—saying it only applies to new equipment and that the way their employee logged the request justifies the charge. I tried to resolve this with them, but the only concession they offered was cutting the bill in half, not removing it. And now they’re threatening to take me to small claims court.

Based on my experience, I would not recommend this company.

I unfortunately had a terrible experience with one of the employees who showed up at my client’s home today to address an issue with their heating system malfunctioning. I own a pet sitting business and since my client is out of town, I was the person who needed to explain the issue that was occurring. The employee, a short middle aged man, refused to listen to the issue, chastised me for doing what the client had asked me to do, then proceeded to completely dismiss me and walk away as I reiterated the issue that was going on. When I say dismiss, he completely ignored me, refused to look at the thermostats or heat registers that I was trying to tell him were involved in the issue, and walked into another room two different times as I was still trying to explain the issue. I realize I’m not the owner of the home, but I was completely taken aback by how rude and dismissive he was. He may not have thought what I had to say was important, but he needs to keep his prejudices and biases in check when he’s working with the public.

My water heater went out they sent two professional hardworking men! Tom and Ethan were amazing and flawless with their execution and service! Very pleased with the service! Would recommend to anyone! God bless!

Have been exclusively working with Gartman for the past 10 years after a couple of other local heating and air conditioning companies let us down. Gartman has been awesome to work with. They are speedy and reasonably priced and we will continue to work with them in the future.

After our 20+ year old AC unit decided to fail, we called Ryf in Winneconne. They were always helpful with all my questions, and even came to the house to look over all the different elements of the system that have been added from previous owners over the years, to make sure we got the right unit for our home. When we found the right fit from Bryant, within days they let me know they were coming and the next morning Chris pulled in and went to work. By the afternoon, the house was cooling down from 89 degrees in the house. They went above and beyond the call. 5 stars! Thanks to Nate, installer Chris, Noah and all the crew for their tireless effort to help our family. We will be back.

My furnace was starting to go and needed a new one. I called and received a quote in one day. They walked me through the quote. I said they could come within the week to replace and they called back and did it the same day. Techs were nice to work with. They explained what they were doing. I would recommend.

We had a failing 30+ year old furnace. We knew it would be time soon to address its replacement. On a Friday morning it was time to replace or get darn cold. We called Ryf Heating and Air Conditioning and had a tech over in less than 20 minutes. We received a quote in the next hour and had a team to replace our furnace in a few hours. The process was smooth and clear as we did not expect to have it done same day. Thank you very much Ryf you will be our HVAC team moving forward.

Furnace and central air replacement and new install.
Great job. Was done in timely manner and very efficient. Workers were very knowledgeable and well trained.
Again great job.

Nate and team are wonderful to work with. I won't know how well the Mitsubishi minisplit operates for a few months for the AC, but so far so good. Thank You Ryf - John (Green Lake)