Jerry Kelly installed our new HVAC System in November 2017 and has been taking excellent care of us…read moreever since. Today their very personable technician, Dillion came out to check, maintain and clean our A/C unit. Dillion did a great job, very professional, friendly, engaging and thorough. We truly appreciate everything Jerry Kelly does. We highly recommend them for your heating and cooling needs.

In Sept 2026, during extreme heat, a Jerry Kelly technician diagnosed our non‑working A/C as having…read morea seized compressor and said repairs would exceed $6,000. We were then given a handwritten replacement quote on notebook paper with no brands listed and only vague "standard" vs. "high efficiency" categories. The quotes ranged from $19k-$23k, and we were pressured to make a decision immediately. When we said we planned to get other quotes, the lowest price suddenly dropped to $14k -- an immediate ~30% reduction that made it clear the original pricing was heavily inflated. Our home was over 90 degrees inside, and the only option offered was next‑day full system replacement. We called another HVAC company for a second opinion. Their technician found no seized compressor -- just a failed capacitor -- and repaired it within minutes for a couple hundred dollars, restoring cooling within an hour. He also arrived with a portable A/C unit to ensure our comfort if the repair wasn't possible. Jerry Kelly did refund our diagnostic fee and Maintenance Club membership after I contacted them, but consumers should be aware of the high‑pressure sales tactics, questionable diagnostic practices, inflated pricing, and the importance of getting a second opinion before agreeing to major HVAC repairs or replacements.

I needed help with my hvac and I called wentzville air…read more Kyle showed up on time and found the problem right away and I was back in business with my cool air. If you have a problem with HVAC call wentzville air and you won't go wrong.

Service was quick and Kyle knew what he was talking about. The value was great and he helped me…read moreset up servicing for me system that is several years old.

My fan blower on my A/C died to an Ameren power surge. I called Comfort Works and got Luke who…read moreanswered the phone. I did not have to go through a line of people to get some information. He was kind, informative and promised me an appearance the same afternoon. His technician, Matt arrived on time and found my problem within a few minutes. He did not have the replacement part but assured me that he would order it and possibly put it in the very next day. Today is the very next day and he just completed his job. He left no mess, showed me how to clean my "complicated" filters and went on his way. If you ever have A/C issues... You are foolish not to start with these gentlemen.

From the owner: ComfortWorks Heating and Cooling supplies all of your heating cooling needs, from air conditioner…read moreand furnace repairs, installations, and preventative maintenance, we can handle it. We are your local family owned heating and cooling technicians serving St. Charles and St. Louis counties!

This is sort of a double-header, and includes a review for today and from a service call about 2…read moreyears ago. This company and their techs are great. Two years ago, a day before we were supposed to head out on vacation, we found our water heater leaking. We called them, they came out quickly, got the permits they needed, and we went on vacation without having to worry about it. This morning, our furnace wasn't kicking in. No vacation plans this year, but the technicians came out quickly, found it was an in-warranty part, and got it replaced quickly. They were smart, knew what they were doing, and professional (and wore masks). We'd absolutely call Faszold first for any HVAC issues down the road. Thanks!

Called this morning and they were able to fit me in today for a service call. Their technician…read morediagnosed the problem as being a bad circuit breaker and not a furnace issue at all. I appreciated the honesty! He had to leave to get a new circuit breaker and came right back to replace it. I'm happy with the service - prompt and courteous - but I am not thrilled with the high cost. The service call was $89 and a new circuit breaker should cost only $20-$30. I was charged $331.50 total, which I've been told by neighbors is very, very high for such a simple fix...Oh well. At least my furnace turns on now.

Alright, I will say they requested to send out a tech who came and resolved the wiring issue. I…read moreappreciate their efforts to make it right. Maybe these guys are turning the corner.

In November 2025, I called this company to inspect my AC/heating unit. The technician upsold me on…read morea heating and cooling maintenance package, explaining that it was the best thing I could do for the unit, so I purchased it. He also told me I needed new filters, which I went out and purchased, and he installed them. He was very friendly, so I felt confident that everything had been taken care of. Since it was winter, we only used the heating portion of the system, and it worked fine. We had no need to turn on the air conditioning until two days ago. When we finally turned on the cooling system, we discovered that it was not cooling at all. I contacted the company because it appeared that either the cooling maintenance had not been performed properly or it failed to identify an issue that already existed. If the cooling system had been inspected as part of the maintenance package I paid for, I would have expected any needed repairs or replacement parts to have been identified at that time, especially since the technician had no problem recommending and selling additional items during the original visit. When I called, I was told that I would need to pay an additional $99 service fee just for someone to come out and look at the unit. I explained that I had already paid over $200 for a heating and cooling maintenance package and wanted to understand why I was being charged another fee when the cooling side of the service had not resolved or identified the problem. Instead of addressing my concerns, the representative raised her voice and repeatedly told me that the only way the company would come out was if I paid the $99 dispatch fee. Based on my experience, this company's business model seems heavily focused on upselling and generating additional service charges. I would not recommend this company and believe customers should be cautious before purchasing their maintenance packages.

I have known these One Hour Heating and Air Conditioning owners for many years. I put my trust in…read morethem and their services. They have helped me in many ways, putting my comfort first.

From the owner: At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that…read moreyou put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time—guaranteed.

It's time for annual furnace maintenance! I was setup with C-N-O through an online service and I…read moreset up an appointment via text. The day of the service, I got a text from Tyler, the technician, saying he was 25-35 minutes out. He arrived promptly. Him and his coworker, Tom, were properly masked. I showed him the furnace, and he went to work. Now, I've used a few different companies to service my HVAC, never really happy, only coasting by, until now. Tyler and Tom were thorough, checking out the furnace. Tyler informed me of a part that was aging out. I was skeptical at first, because I don't understand HVAC all that well, and I've heard of more than one story of technicians who are less than honest. That said, the price Tyler quoted me for the repair was quite reasonable and they've earned my trust. Overall, a good company and I look forward to seeing them in the Spring for my annual AC check.

When our regular HVAC company suddenly dropped all of their commercial customers, we called CNO on…read morethe advice of one of our employees. They were super responsive, totally professional, and did an excellent job. And their price is so much more reasonable than the last guy. Highly recommended!!

Pleasant to deal with!…read more My scheduled changed and they were so accommodating they still came over and drew up a quote so I could get this over as soon as possible for my HOA to approve. Communication is good. Staff is very friendly. Quote was very detailed and just what I need for HOA approval. Recommend for any HVAC needs.

I have been using Aire Serv for all my air-conditioning and furnace needs. I partake in the monthly…read morefee for maintenance that most AC companies have (get discounts too with that ). They're very alert about coming in and putting their booties on on first entering the home. Any employee who's ever come into my house from Aire Serv is courteous, informative, and compliant with my needs as a client.

Nick Laurent from Academy Air was extremely knowledgeable, courteous and professional in providing…read moremy Fall HVAC system tune up. He quickly identified potential issues, explained in a manner that was clear and easy to understand and outlined options without any high pressure sales tactics. He addressed his duties efficiently, kept his work area clean, demonstrated respect for my property, and provided useful insights to help ensure my system continues to operate optimally. Outstanding customer service from beginning to end! I will definitely continue to use Academy's services to maintain my systems and recommend them to anyone in need of world class HVAC services. Top grades across the board!

I was charged $4800.00 to have a hot water heater replaced and now they want to charge me another…read more$1000.00 to replace the pressure valve! The water pressure was fine with the old water heater, pressure immediately reduced when they put the new hot water heater in. The lady Jen that I just talked to From management at Academy Air said that when the water was not running, the pressure was good once the water started running the pressure got bad well usually you check the pressure when the water is running really sounds like I'm getting a run around! I personally think that you should look at other companies, this company in my opinion has big problems especially with customer service and support!