They provide a full and comprehensive care for your home HVAC system. They are not cheap but you…read moreget what you pay for. Exceptional phone contact and service to your front door. Clean and respectful technicians and quality service and equipment. Highly recommended

So we just had Jerry Kelly out to do the checkup on the AC unit they installed in July 2020. This…read moretechnician says we need a dual motor outside. This is they same thing that the guy in the fall tried to do when they were out to check the heater, they come up with all kind of things they want to sell you. Also, the appointment today was after they moved our original April appointment because they had other customers with broke systems. What good does it do to have their service club membership if they don't come out when you have the service scheduled.

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.

From the owner: We are a family and locally owned heating and air conditioning company located in the heart of…read moreWentzville. We can service both residential and commercial customers. Our services include HVAC, heating, and cooling repairs and system replacements. We can perform all of your maintenance, repairs and installations needs. - AC startup - Heat start up - System replacement - Maintenance - Troubleshooting

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!

We have used Classic Aire for almost nine years and have had service calls and twice-yearly checks…read moreover the years. A new HVAC system was installed in our home in late March this year and everything was done professionally and neatly with no messes left for us to clean up. The system worked great until the incredibly damp and cool spring when the AC was having real trouble dealing with the humidity in the house. But Faszold--and its mother ship, Classic Aire Care--kept sending out a couple of stellar technicians to check and adjust the system until they got it right. And this was warranty work--we did not pay for anything as they tweaked settings and made the system work in our home. Anthony and Steve are true problem solvers as they continued to address individual parts like the thermostat and fans and they finally got it all worked out so that the system is able to keep our house below 50% humidity. It was a frustrating time but the company has been responsive and supportive. Mike Faszold was also amazing and continually answered my calls and texts during both pre-sale and after install time. This company stands behind its installs and comes through on its promise of good customer service. Check around but believe what they tell you.

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.

CNO are the only ppl I trust to service my seasoned HVAC system. Reliable and honest. When I…read morefinally cave and decide to replace her I will go with them over any other service provider.

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.

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 recently used Academy Air for a water heater replacement and overall had a very positive…read moreexperience with their team. I only gave three stars because of pricing. The technician who initially came out to provide the bid, Tristin, was very kind and knowledgeable. He took the time to walk me through the issues with my existing water heater and clearly explained the options. I appreciated that they were able to schedule the installation quickly--within just two days--which was very helpful given the situation. There was a small scheduling hiccup, but it was resolved quickly and professionally. Joe Raney and Julian handled the installation. Joe was exceptional and really stood out in terms of customer service. He carefully walked me through the entire install process and took time to explain water heater care, maintenance tips, and the do's and don'ts moving forward. He was extremely patient and thorough, and I never felt rushed. Julian was also very kind and professional during the installation. Overall, I'm satisfied with the work and very appreciative of the professionalism from everyone I interacted with. The only drawback for me was the pricing. Because I needed the work done quickly (only available for the following 3 business days), I went ahead and signed the bid which was a little over $3600 for a standard 40 gal gas water heater, expansion tank, repiping of cold/hot lines, permit, install, and disposal. Afterward, when I had time to look into other quotes, I found that other reputable contractors were coming in much lower via phone - one almost half. The $400 fee to pull what is essentially a $50 permit felt particularly high, especially since competitors I spoke with charge closer to $150-$250 for that service. I was also interested in potentially enrolling in the maintenance program for HVAC and the water heater, but I'm hesitant because if an issue is found during maintenance, the repair pricing will not be competitive. That said, the technicians themselves--especially Joe--provided excellent service, and I truly appreciated their professionalism, patience, and willingness to educate me during the process. The technicians don't determine pricing so this in is no way a reflection of their service.

The entire team was professional, courteous, have expertise. Excellent craftsmanship, dedicated,…read morehonest, knowledgeable hard working team. Thank you​