John Thielmann & Son Heating and Cooling, Inc.

I would recommend getting quotes from other companies and going with them. I had my AC replaced and they guaranteed the work. My system kept failing and I would have to keep calling them over every few months to service it and the charges kept pilling up. I contact another company and they were able to fix it for a fraction of the cost (about 10%) and we have not had any issues for over a year. Thielmann group seems like a bunch of inexperienced people that try to milk you for money. I complained and someone from the company called me directly and was very aggressive and unprofessional on the phone. Do yourself a favor and find a different company for your needs. I regretted going to them. My family suffered on several hot summer days and cold winter nights because things kept failing.

Went through COSTCO to originally hook up with Thielmann. They installed our furnace and air conditioner several years ago. I have had them out to the house for general maintenance throughout the passing years. I called yesterday about a problem I was having with my furnace. I didn't expect to see them until after the holiday but they came out today! Rich did a great job of explaining what he was checking and what should be done. Very nice and professional. I would highly recommend Thielmann to everyone.

We used the Costco program to connect with Thielmann's. The quote process was easy no pressure sales. An install date and time were set, and the installation went smoothly and cleanly. Installers were polite, professional, hard workers. We are beyond satisfied with our new furnace and AC installation. We would give the Thielmann Group a 10 if possible. 👍🏼

We used the Costco program to connect with Thielmann's. The quote process was easy and comfortable - no high pressure sales. An install date and time were set, and the installation went smoothly and cleanly. Installers were polite, neat and worked well. We are very happy with our new furnace and thermostat.

The entire process went very well. Thielmann & Son Heating and Cooling fit us into their schedule earlier than expected when our A/C failed during the 100° plus weather. We purchased the furnace and A/C through Costco and received a nice store credit for 15% of the purchase price and other rebates. Thielmann & Son handled all the paperwork for us - Thanks, Thielmann & Son!

From the initial contact to the completion of the job everyone at Thielmann was professional and helpful. The only problem is that since the air conditioner was installed we've had cool weather!!

This is the second home we have had someone come in to clean ducts. John Thielmann & Sons was far superior. Everything was very clean. Even the heat vents! The price was also far less than what we the other company.

It was very good, very professional and did a great job.

The process was quick, in a day, and efficient. OId furnace and AC were replaced and removed. Everything was perfectly cleaned up afterward. Nothing for me to do except stay out of the way. The new systems are quieter and seem to work better.

From the beginning to the end nothing but top professionalism . very satisfied with their work !

I hired them through the Costco purchase program. They were very responsive and professional. I was very pleased with the entire process.

Everything went great, from the initial point of contact all the way to successful completion of installation. The entire team did a great job!

We searched for the best way to cool our old house for several years. We have hot water radiators, so there are no ducts to use for a forced air system. Cost of installing a traditional forced air system was approaching 25K and basement ducts would have been difficult to accommodate. Considered a high pressure system, but lack of empty space to get ducts from attic to ground floor resulted in potential for less than ideal cooling circulation and potential noise problems. Settled on a Minisplit system. Got two bids and both bidders bid a Daiken system. One bidder failed to provide enough information about units to be installed for me to make an informed decision. Thielmann and Son's Brad Smith while quoting about $500 more than his competitor provided a complete proposal. Scheduling was difficult as we were in a heat wave, but technicians from Thielmann showed up on the appointed day, on what was to be a one day install according to Mr. Smith. A full crew of 5 people worked on the first day and made good progress but weren't close to being finished. As they were leaving for the day I was told the office would call to schedule there next work day as they were moving on to another project. When the office called they agreed, after discussion, that they would keep working until the project was completed. The next day Matt and Tyler continued the install. They were meticulous in ensuring everything was installed according to the manual, that everything was on the level and square. The were very considerate of our home, keeping the workspace as clean as possible, and cleaning all debris at the end of the workday. They put in a good day's work, no long lunches, no leaving to buy odds and ends. They showed up to work and did. On the third day four people worked on completing the install and made good progress. On the fourth day Matt and Tyler worked all day and nearly until 9.00PM to finish the job. They cleaned up all debris and left our attic cleaner than they found it. The two Daikin Heads installed on the ground floor cool the whole downstairs. The unit installed in the attic with ducts to each of the rooms cools the upstairs. The unit in the attic and ducts are fully enclosed in insulation to minimize cooling or heat loss. The Daikin system is quiet, after having a forced air system that boomed on and was noticeable when stopping, the quietness of the Daiken system is a pleasant surprise. The outdoor unit is also very quiet. Thielmann and Sons were a bit loose on completion time, but the folks assigned to our install, especially Matt and Tyler, did an outstanding job. The office staff was very easy to deal with. I would hire Thielmann and Sons again with no reservations understanding the job might take longer than estimated.

I was impressed throughout the process. The guy that came out and gave us our quote was highly professional and one of the owners of the company. He helped make our decision very easy and gave us peace of mind that we made the right decision. When the installers came they were professional, courteous, took steps to keep our house clean and did a great job of explaining what they were doing. The one guy also did a great job of explaining how to work our new Wifi thermostat as well. I would absolutely recommend this company in a heartbeat.

Absolutely fabulous experience. Various cost options offered, installation was by two very courteous professionals, very clean looking system has functioned with no problems now for several months. These guys are tops!

They were very helpful and responsive through the whole process, I will definitely use them for my annual furnace/AC check.

Installers arrived on time and were polite and respectful of my time and property. Everything was installed quickly and efficiently. System operation was explained upon completion and the work site was cleaned up and packing materials removed when they left. Great work!

They are pretty good. We have had them before. They are good.

My air conditioning unit stopped working on one of the hottest days this summer and I called to see if they would be able to come out. I left my name with the answering service and the technician, Rich, called back within the hour, got to my house in 30 minutes and was able to replace the capacitor in 15 minutes. I am extremely happy with the service they provided and will be using them in the future for my air conditioning and heating needs.

I scheduled an inspection and routine maintenance for the central air conditioning unit at our Waukesha home which we had recently moved into. The company offered little flexibility on scheduling, but bceause of their favorable rating on Angie's List, I thought it would be best to sacrifice a personal day from work so I could have them come. An hour and a half into the expected time window for them to show up, I called to see if they had an idea when they might arrive. After being put on hold and transferred to Nancy, she informed me that they would not be coming because the temperature was below 55 degrees. I then told her that I was disappointed that I was not contacted in a timely manner, but moving forward that I'd like to reschedule ASAP to which her response without an apology was that the soonest appointment they could do would be three weeks away. I told her that was ridiculous since they were the ones cancelling and she said that is the best they could do from which I responded that I would use a different company for service. Very disappointed with this company's customer service.

It went well. Standard visit with repairs as needed.

Overall, they did a fantastic job. They arrived on-time and did a great job throughout the installation Since we were having a new condenser unit installed, it was in a large box, and after pulling it out, my 2 and 5 year old boys had an immediate interest in it of course. The installers cut a door into it so they could open and close it! That's pretty cool, not sure what else to say about that. Regarding the installation ,they completed and everything a month later is running wonderfully. They had a special on their website of a free (including installation) wi-fi thermostat with any AC purchase. At the time, they didn't have any in-stock and it took a few weeks after our AC installation to get it installed, but the follow-ups with the company as to the status was awesome. I had contact with the owner via email on a Friday night which is phenomenal. I would highly recommend Thielmann and Son.

Brad Smith was punctual in providing an estimate for the job and in responding to questions. The quote was competitive with other quotes that I received. Brad made some recommendations concerning the units to be installed that were very helpful. The work was performed in a professional manner and began on the date and time that had been scheduled. His office staff was prompt in providing the documentation need to obtain energy credits.

Installers did nice work. I had hoped they would get to the house a little earlier then 8:45 but I felt comfortable leaving 15 minutes after they arrived and explained the install details The install was smooth even though a storm interrupted power at the house for about a hour. Called me about 2:30 and I came home with everything cleaned up and Chris reviewed my new system with me. System works great and I know I got a great deal since I had multiple quotes but Jason was very competitive on cost and assured me of high quality future service. After all rebates I paid $6140 for top of the line Lennox equipment XC17 A/C and SLP98 Furnace + Humidifier. 10yr parts and labor also makes me feel confident in my investment. I will update review with how the rebate process goes.

My husband met with them and really liked them. When they came to the house they were very rude and kept asking for my husband who was at work. We ran into a problem with one of the heating vents and the entire time when they came back they blamed the carpenter. He was so rude in his tone of voice to me that the drywall guy who was here told him to stop talking to me in such a rude voice. I could not believe how rude they were. Will never use them again.