Thielmann Heating, Cooling & Plumbing

Robert H.

we just bought this house this year. i called them because it appeared that the previous owner used them. I first called them out because my AC was not cooling. the technician told me it was low on freon and put some in. i asked him if that meant that it had a leak, he said yes. i said i would like him to find it. he said he did not have the die needed to check. then he ran out of freon and was running back to the shop, i said bring some die back. when he came back, he said they were out, and it cost $200.00. before he left, i said, it is not blowing cold. he put his hand next to the vent and said yes it was. the next day, i called them back complaining. they sent someone out he changed something, and it started working. i called yesterday to get a quote for fixing the leak, they wanted to charge a service fee for coming out. they did not care what happened in the past.

Kiet N.

After a call with someone from there I decided to change my review. I'm still up in the air with them, they were very defensive and admitted that their call system is not working and they are changing it. They stated on the phone that the part needed would've costed around $700 for them to get the first night compared to $360 on Wednesday, I already spent about $200 on space heater so I would've spent the extra money to get the part on Friday and had it fixed right then and there. Under normal business their part would've been delivered on Tuesday so since the part was backed up that was why it took until Wednesday to get the part, so the guy on the phone said the technician technically did not lie. I am still on the fence about this company and I'll see how the next interaction goes.

I ordered a new A/C unit through them, a few months later it stopped working and took some time to get a hold of someone after leaving a message that they never received. Guy comes and says there's nothing wrong and cleans some sensors and I get charged a service fee. Come a few days ago on the coldest day of the year, it stops working again, called them and they send someone on 12/23/2022 and he says it's a gas valve and they can change it on Tuesday 12/27/2022. So I have to get a bunch of space heaters to keep my 7 month wife and 2.5 year old daughter warm during the coldest weekend in WI. Tuesday comes and they do not have the part still so they have to come on Wednesday. The guy comes and has to get the model number to get the right part. So it took 5 days during the coldest weekend for them to do something and almost $500 later. I will definitely not be using this company again for anything in the future.

***Update***

This company is tied to Roth Heating and Cooling. My system continues to fail every few months (well this time it took a week to fail after they ""fixed it""). We continually have to wait for parts to come in so we have to suffer in the heat or cold for a couple of days. Last week we were charged around $900 for them to fix it and now a week later it's not working again. A guy just came in and charged us $250 for diagnostic and we do not know how much the part is going to be but we have to suffer in the heat until Monday when they get the part. This business just seems shady and untrustworthy. I tried to give them the benefit of the doubt but since using them our unit continually fails and we are spending a lot of money for them to keep coming and ""fixing it"".

Yeshwant R.

I experienced Thielmann & Son's service through my Costco membership. If that does not tell you something, allow me to expand. From the moment of receiving a call from their front desk to the completion of the project, every bit was clock work professional, clean, and honest. Measurements and size of the HVAC system, explanations of what each term means and how it impacts the home, energy consumption, etc were all provided with a lot of patience. I had enough time to do my own research regarding pricing, current labor, comparison of brands and models, etc. I am impressed by these folks and their business model. The work was spot on, clean and surgically executed. I am a loyal customer now for the annual maintenance and if other needs arise. Keep up the good work Thielmann and Sons.

Lynn A.

My entire experience with Thielmann has been seamless from meeting with salesman Wayne to the install of my furnace. The techs were friendly and courteous and arrived on time. I was also impressed with the friendliness and professionalism of their office staff.

I highly recommend Thielmann!

Jeanette P.

Needed to replace furnace and AC unit . Prompt and courteous service. Willing to answer all my questions. Gave me a very fair price. Found them through Costco in Grafton, WI.

Daniel B.

My family of 6 was w/o heat. Called late afternoon and they found a way to send someone out to look and quote me. Just amazing to see the great reviews and then get someone out that fast was so needed w/ no heat. The Gentlemen took the time to explain the benefits of high efficiency and the cons. Also, the pros/cons of the regular boiler system we already had. Told them I needed to confer w/ my wife that night.

I contacted a day later and said please schedule me at the earliest for installation. I was worried as the chap mentioned they had to ship the boiler from Ohio. Upon hearing back from the office the guy already had the unit on its way and tentatively scheduled me prior to my calling. Man what a relief. The very next day after they received the unit they installed the unit.

Installation: Guys were professional, and laid down tarps/ carpet plastic everywhere. All the work getting the old boiler out and draining, and prepping for the new unit was done. The electrician came and was personable, professional, and quick. The boiler team was then allowed to finish connecting the copper and all connections. Afterwards, they weren't in a hurry to get out of my house. They cleaned EVERYTHING up and then some. These guys were great. Glad to have found a reliable company. Honest people. Fair. Reliable again because they returned my calls, showed up when they said they would, and left my house better than when they came. THANK YOU! My family had heat that night. Boy was it glorious.

Front Office: Super kind, helpful, and expedited all the schedules, and questions I had, and even when I made a mistake on the paperwork they were very pleasant and patient.

Short story, long: I would pay more for this service but they aren't out gouging people either. Prices were in line w/ most, lil cheaper than some but were not more expensive. Hope that helps someone like me, reading these reviews. If you are on the fence, stop. Call these folks. Kim, Steve, Chris THANK YOU

Natalie R.

Excellent experience all around! I needed a new AC unit and reached out to multiple companies in the area but received the most in-depth information from Thielmann to feel confident about not only the unit I was buying but the service I would receive going forward.
Upon installation, the guys were friendly, efficient and took the time to explain the new unit to me, making sure to answer any questions. I also had my ducts cleaned and that guy was also incredibly informative throughout the process.
Overall, communication was great and I always felt like I made the right decision going with Thielmann for the best service and AC unit in the industry!

Bridget H.

Prompt and Excellent service...I would highly recommend!
They were able to service my air conditioner within 2 days of calling them and had it fixed within 2 hours of arrival.

Gee F.

They were with us every step of the way and made us feel like we've done this before. The in-house financing was key but the information they provided made our decision making process all the more streamlined and stress free. I recommend Thielmann and Sons if your looking to beat the heat this summer and want to wakeup in the hotel room that is your home. I already have it planned to schedule annual maintenance with them to help ensure that my warranty is offered. Money well spent...Yaap!!!

Mario Britton

Jennifer M.

They did a duct cleaning in our home. I found good reviews of them online and thought they did a nice job. We were long overdue and their pricing was fair. I would suggest them to others.