Fantastic people! I stumbled among this GREAT company listening to WISN Radio. I've build a…read morewonderfull relationship with this crew over the years. It's always been my expericence that Pactrick & Dave are alway EXTREAMY responsive to my requests. Tell them George from the SAWMILL INN sent you.

We bought an older (1985) home recently that had some issues, including the furnace. The home…read morewarranty company sent out Iron Fireman for the repair, and the tech fixed the problem quickly and professionally. After the repair, we got a nice follow-up and thank-you letter signed by the owner. We decided then to get a whole-house humidifier installed, but get the ducting cleaned and sealed first. Wow. Great job by technicians Matt and Jennifer. And such nice people. We are so happy with our fresh, clean air--proven by before-and-after pics taken by them--and the test results. Highly recommended. I will be writing a Google review as well. LT

great service, excellent equipment. Highly recommended. The…read moreheat pump is quiet. Keeps my home cool in the summer and warm in the winter and helps the environment..

We booked our yearly furnace tune-up online and had great communication through both email and…read moretext. Our service window was 8:30-10:30, and Giovanni, the owner, arrived promptly around 8:45. He was friendly, professional, and very knowledgeable--he even took time to show us helpful tips about our dampers and other homeowner basics. The whole visit took about 30-40 minutes, and everything checked out in great shape. I really appreciated that he didn't try to upsell or charge for anything unnecessary. Fast, friendly, affordable, and quality service--highly recommend! We'll definitely use them again next year.

Very knowledgeable serviceman who answered all of our questions. Very professional yet with a…read morepersonal touch. Was truly interested in our specific concerns and questions. Did not take long to arrange an appointment. Offered suggestions on best way to set and regulate our furnace. After many years with another company that we've learned to distrust, a change was necessary and Donovan & Jorgensen definitely left us with a very good impression.

Just wanted a ballpark quote on my boiler that's working but acting up. To start they demand info…read morelike address and a phone number straight out the gate, I'm sure it's so they can harass me later with "do you still need" calls a week from now and when you give it you find out they charge $100 just for a diagnosis. Don't waist your time They clearly don't want the business.

Forced Air Systems has been amazing to work with. They serviced four different furnaces for us in…read morethe last 3 months and have given us the best service possible. Other companies told us the only options were full replacement. Forced Air took the time to attempt to fix them (successfully). Quick and friendly service. Would highly recommend and would definitely use them again.

I had a top notch experience with Forced Air Systems. They reached out to me with a quote within…read moreseconds and scheduled a technician to come within 48 hours. Ben serviced my AC unit and was professional and helpful. He talked me through each step and made sure to clean up after himself. I'm very happy with their work and will call them for any further AC or furnace issues that may arise.

We called Pat's to diagnose and repair our boiler, which decided to crap out on us on a Sunday. The…read moretech, Michael quickly gave us a call back, and within an hour he arrived at our place. Michael not only diagnosed and repaired the boiler in record time, but he was also kind enough to take the time to thoroughly explain how a hydronic heater works, and all of the necessary maintenance involved. Michael was extremely knowledgeable with all things HVAC. We were charged a very fair price for the labor, especially considering the weekend callout. Fast forward a few weeks, and we called out Michael to update some of the heater controls. Again, Michael provided outstanding service and corrected a few other issues with our hydronic system. Still highly recommended!

Update 4-14-2026 To finalize this exchange and summarize…read morePat's treatment of my family and I. I have been extorted by Robert, accused of fluffing the bill, and essentially told that due to Pat's mistakes I am no longer welcome to use the service. This last part is verifiable in the response given to me. To whomever is above Robert I want to clarify how this situation was 100% caused by your company and now I am being painted to be the villain. If you pull the phone record you will hear that my family and I never once asked for a discount. In fact Robert was adamant he make it right and reactively (as this was after the first screw up) offered to take this job on the chin. I encourage you to ask Michael, as he is a super honest employee of the conversations we had with him as he made a mistake and misquoted. I assure you he will be nothing but truthful regardless if he made the blunder. With all this being said I am now not welcome to use your service according to the Google commentator. For that I am bummed as the workmanship, when Pat's does show up has been historically a class act. I have contacted the BBB, and Angie's list due to the extortion and treatment by Robert and Pat's heating as a whole. I do not care what the outcome is but to sit back and be bullied due to Pat's mistakes, and Robert's incompetence is absolutely ludacris. To the owner, if you want to make right terminate Robert's employment and I would be more then willing to continue business as my family has done so for the last 20 years. Robert has done nothing, and I mean nothing to make any of this experience pleasurable. Even eating the job, which your team did as Robert promised, came at the expense of extortion, and painting my family and I as the villain. I must say that the treatment of my wife and dying father (the one sitting home waiting for Pats delaying treatments to be available) lead me to get involved. The owner is welcome to call my dad and he will give you my number. I will not discuss anything with Robert as 99% of these issues came from his failed management. To any users reading this know I do this to show you the caliber of people Pat's employees. In the unfortunate event an issue does arise that is out of your control it is evident Robert will say whatever it takes to try fixing the solution but do minimal to help. A liar is a liar, beware before making any Deals with him and I will encourage anyone to get anything he says in writing to expedite the back and forth I had to do to get him to honor his commitment.

Mr. Blake Townsend has been to our house multiple times now, and is not only a pleasure to work…read morewith, but knows his craft extremely well. On the most recent visit, he caught and fixed some issues that undoubtedly will save us money and keep us comfortable this summer. We're extremely happy to remain regular Nimmer customers.

Chris did an excellent job on our air conditioning unit. He arrived on time and was very cordial…read moreand completed the tune up in a timely manner.

Nordic air fixed my thermostat problem with the utmost professionalism, and super quick to boot! 10…read moreout of 10 would recommend, great value as well.

Great fast service on time and accurate and fairly priced…read moreNow waiting for a bid for the total service work

These guys are very efficient and straight to the point. They don't try to sell you on things you…read moredon't need. Josh and his team of HVAC magicians were very kind and knowledgeable. It felt good to be kept in the loop from start to finish. I would recommend this company over any others in the Wisconsin area. Thanks for being Rockstars!