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.

After our furnace failed to turn on, we contacted Jerry Kelly Heating & Air Conditioning to…read morediagnose the problem. We were told that we needed both a new furnace and a new water heater, despite the fact that our home is only nine years old. The technician quoted us approximately $15,000 for the recommended replacements. To make matters worse, the technician asked my wife to take out her phone and enter a five-star Google review for him before he left. We decided to get a second opinion from another company, which determined that the problem was simply a faulty control board. The repair cost only $750, and our furnace is now working perfectly. I have since heard from several other people who say they have experienced similar issues with Jerry Kelly, including being pressured to purchase expensive replacements they did not need. Based on our experience, I am extremely concerned about these sales practices. I believe the Better Business Bureau (BBB) should investigate these complaints. I am particularly concerned about the possibility of elderly or vulnerable customers being pressured or frightened into spending thousands of dollars on unnecessary equipment and repairs. I am sharing this experience to warn other homeowners and encourage everyone to seek a second opinion before agreeing to costly HVAC replacements. In our case, getting a second opinion saved us thousands of dollars.

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.

Excellent experience with Rich. Needed gas line capped, water expansion tank replaced and tub…read morefaucet replaced. Same day service. Honest and up front with pricing.

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.

I recently had two electricians come and take a look at bad Tesla charger. They both we're…read more professional and kind. They got the work done fast and they even cleaning up afterword so I could pull my car back in immediately afterward. The one problem i have is some of the prices they charge are a little to high for the area.

this new company is not what they were. We have been a loyal client for 30+ years and 4 houses…read more They've evolved into a revolving door of technicians and additional charges. Previously I recommended them to everyone, but unfortunately, they now are unreliable, don't stand behind either their work or products, and upsell 100% of the time. Terry was the lifeblood of the company; it's a shame to see what's been made of it.....