Excellent doesn't begin to describe their service. Courteous, punctual and fair pricing. I will be sticking with them spring and summer check ups and any necessary work to be done with AC or Heating. Rockford Il maybe beyond? read more

I've used Carlson Heating & Cooling twice and have been very satisfied both times. In 2024, I had them inspect my furnace and AC. They arrived on time, were professional, and gave my system a clean bill of health--without recommending any unnecessary repairs. Last week, when my AC stopped working, they quickly diagnosed a dead compressor and recommended a replacement. Impressively, they waived the $225 charge for the initial visit and parts. The replacement was completed on schedule, exactly within the estimated cost. The technicians were friendly, informative, and professional throughout the process. They also cleaned up thoroughly, leaving no mess behind. I trust Carlson Heating & Cooling completely and will continue to use them for future service. I highly recommend them to anyone needing a system check-up, repair, or replacement. read more

Mike was just awesome!! I will be calling him again for my cleaning in the spring. His prices are fair. He came over to fix a problem with my furnace. We thought we had fixed it. I needed to call him back and he came back to fix it after his day was over. A part needed to be replaced. He used the service charge towards the price of the part. His work is really quality. Very conscientious. Will be calling him again!! read more

5 STARS is not enough! Mike is absolutely the best service provider anywhere. Always quick to respond, and always ready to help ASAP. His charges are always VERY reasonable. If you need service, call Mike. read more

Mike and his team arrived on time and swiftly diagnosed the issue with our heater. He provided helpful recommendations and listened to our questions. We'll definitely have Carlson at the top of our list should we need HVAC work in the future. read more

Carlson is THE BEST! Fast, courteous service at fair prices, and a pleasure to work with! Mike is the nicest guy, and he does a good, honest job! I have used them for preventative maintenance on my heating and a/c. Today, when my air conditioning wasn't cooling properly in the midst of this record-temperature heat wave, they came out and quickly diagnosed and fixed the problem (replaced a capacitor) and now it's working well. They didn't charge me an arm and a leg either like some of their competitors wanted to do. Best service! read more

These guys are fantastic. They are extremely professional and efficient. We needed our heating fixed in the middle of winter and they helped us out right away. We are lucky to have them. Thank you so much Carlson. read more

I called Carlson and they were able to schedule my immediate appointment request. Carlson came over and after trying to save the air conditioner by replacing a part, the unit was pronounced dead. He called for the replacement cost and I asked for pricing on one size bigger, after we decided we need a larger unit, he order the replacement air conditioner for next day installation. He arrived exactly on-time for the appointment and increased the air conditioner capacity to fit the actual size. The appointment was finished under the estimated time and they were very courteous through the entire experience. While replacing the air coil, Mike showed me the location for the furnace and humidifier filter allowing me to change it myself. After replacing the air conditioner and removing the old one - he made sure that I had the information needed and made sure that if we had any questions to call his office. Great service and great/honest serviceman. I'll not call anyone else for future HVAC matters and wouldn't hesitate to only shop here when it comes time for me to replace other units. Second great round of service - last time was middle of winter and arriving home from out-of-town with no heat, he was wonderful replacing heater during the negative temperatures. read more

They were able to diagnose a tricky issue with our heating system that has been going on for a long time. Reasonably priced and quick service. read more

Great burner service. You won't be disappointed with how through they are. Very competent. Better than the consolidated big boys. Personable and as with most sole proprietors they risk their reputations if they have a bad call read more

Excellent service! Honest and fair. Highly recommended! Central air unit wouldn't come on, have him a call, next day I had air conditioning again. read more

Mike was able to get out here within a day an found a reasonable cost-effective solution to fix my AC unit.

I needed to have my furnace cleaned for the upcoming winter. I haven't had it done since getting it installed. I called Carlson and I was called back promptly. I was able to make an appointment quickly. The job was done in a professional manner. I was very happy with this response and I would gladly use Carlson again. I recommend him to others. read more

Mike recently came out and cleaned our furnace. Very professional and reasonable. Less than what I paid 2 years ago with another company. Thank you and would highly recommend him if you need service on your furnace or air conditioner. read more

We can't begin to say enough about Mike and his "AWESOME TEAM" of workers. We called and he responded in less then 1 hour and set a time to come out. We only needed AC but decided to go ahead due to the age of the furnace and great price given to upgrade and install a whole new system.Mike was very informative and answered all our questions and we decided to "get er done". We received a call later that afternoon that Mike had taken a fall and twisted up his ankle pretty good so we had to do a bit of rescheduling and postpone possibly a couple weeks which was fine by us. We got another call several days later saying he had additional help and would be out the following Wednesday. Mike went over and above and came here with a support brace on and a bad limp due to his injury as well as the pain I'm sure he was experiencing and went up and down our basement stairs 2 days in a row to insure he gave us what he had promised us the customer. What a incredible guy he committed himself to what he promised and in the end delivered and oh what a superb job they ALL did assisting Mike.The outcome was awesome an incredible job completed in less then 8 hours with the cost being 100% of what was quoted and 2 very pleased happy customers. Their work was quite impeccable from beginning to end and we look forward to calling or recommending CARLSON HEATING and COOLING to all our family,friends and co-workers. They don't come any better then Mike and team.If I could rate him 10 stars I would Thank-you Mike,Son,Scrapper you are all appreciated.Do yourself a favor get the job done RIGHT,CALL MIKE @Carlson Heating And Cooling @ 815-243-0231 Leave a message and he will get back to you within a hour they also do Humidifiers.Air Cleaners.Furnace and Air Conditioning Cleaning Thank-you all again for all you excellant work and we wish Mike a fast and speedy recovery..............Jim and Samantha C Recommend 5 STARS read more

My Dad and I have always used Mike Carlson for our heating and cooling needs and he never disappoints. He and his son do excellent work and they are honest and reasonably priced. Mike is very accommodating and has excellent customer service. He has serviced and replaced our furnaces and air conditioning equipment in two homes for over a decade. We highly recommend Carlson Heating and Cooling without reservation. read more

Had an appointment waited all morning. He skipped us and went to the next person because I didn't answer his call quick enough. Seems like poor practice to me. Wants us to wait again until 3pm. read more

Mike is very accomodating and punctual with his appointments. We have used him twice now and he was able to fix our problem. Highly recommend using his services. read more