Bill's heating and cooling came out and ran every diagnostic possible on our HVAC system to find…read morethe problem and did a great job after when installing a new unit. As a home inspector, I am in contact with HVAC techs quite a bit, and was very impressed with Bill and Kimberly. Very knowledgeable and they explained everything thoroughly as the job progressed. We will definitely call them again when needed.

Great price for installation but follow up service is a joke .Had an issue where the outside pipe…read morewas freezing up and air conditioning was not working properly.They came over ,rechardef it and said there was a leak somewhere outside they couldn't find ,we should call them back when it got warmer .After TWO calls ,(we were then told it had to be a certain temperature) They came back ,and told us our filters were too small (same size we had always used) and charged us 90 bucks AFTER saying the previous year this would be warranty work!!!!!! Avoid at all cost,life is too short.........

I have called APS for service at multiple properties I have had. The response time always good, and…read morethe work thorough and friendly. It seems that when people are satisfied they don't bother to review things online. Only the chronic complainers do that. When I have an HVAC problem in that area, I will call these guys. Not the cheapest, not the most expensive.

I found this company to be very professional they came out and repaired my furnace on one occasion…read morewith excellent results. The gentleman who did the work Brad was polite and quite professional, They are currently working on my AC .Brad came over on his day off took out the old unit and installed a refurbished unit which looked like new, Having some issues with unit installed not working properly been without air over memorial weekend but they couldn't come back till Tuesday it sucks to be without air but I'm confident I will have it back today !

They saved me once again! Woke up this morning to a very loud, strange sound from my AC. No air was…read moreblowing through the vents. Called them as this company is my first contact when anything heating and cooling goes wrong. I received a call back and had an appointment this afternoon. They identified the problem and plan to have it up and running later this afternoon. Always professional and make me a priority. Also seen the same individual for years! Fantastic company!

From the owner: We service & repair all brands of Heating Ventilating & Air Conditioning systems…read more Welcome to McCormick Appliance Heating & Cooling. We have been serving Alton and the Riverbend area for over 20 years. We service and repair all major brands of heating & cooling systems including furnaces & air conditioning systems. All of our new A/C & Heating System installations are done by certified technicians. Please call us today for all of your heating, cooling, and appliance repair needs.

Everyone has their own expectations, but I have to give Tiger 5 stars. They continue to help my mom…read morewhile I live in another state and they have been fantastic. Fixed all issues and pricing is competitive to others. They also come out and periodically check the furnace and AC and Kelvin is absolutely amazing. Personally I recommend them!

7/15/26 we had a double inspection done today, the air conditioning and our electrical. The air was…read moredone by Landon who was a pure pleasure to work with! The Electrical inspection was completed by Mike Owen's! Both were very polite and professional and would have them back at any time!

We have used Alton Parts and Service for years. Always came out quickly when needed and explained…read moreevery thing they were doing. Before replacing any parts they go over the cost first. Very friendly and professional.

I called to ask about a part for my A.C. that was ordered and to be overnighted with another…read morecompany already that my cousin was keeping if I didn't need it. I called to see if they could get it that day since my A.C. went out. The guy I talked to said that it would be expensive due to it being a "same day emergency delivary". He told me it would be about 85 dollars. The other place with overnight charge was 45 and 15 of that was overnight delivery fee. He then began to say "well why would you do that to someone"? As if to say I was screwing the other company over and I may do it to them without even asking questions to find out why and just assumed the out come. He was very rude. I have worked in parts before for a good while. His mark up was way over 30%. I know better. Quite honestly I couldn't believe he was talking to me that way. Welp needless to say I did use the part that was ordered and they lost the sale because of it. I had heard they are a rip off but wanted to give them a shot. Now I know. Avoid these people at all cost, which is much higher than everyone else apparently.

Service was poor. Left without repair. Cared about payment than repair. Could not recommend…read more Sharon W.

King did a fantastic job with our new HVAC system. We are all electric with a heat pump and I was…read moreconcerned about how all that would go. We had a very old system and desperately needed the upgrade. Every single part of our experience was seamless, professional, and excellent! We called on a Friday and we had a crew working the next week, completing the process in just two days. From the start of working with King, it was easy! John D. came to our home, explaining what we had, what was needed and what options we had to get the most from our hvac system. He was polite, professional and very informative. He wasn't just selling stuff to sell it, he really gave us confidence from the start, knowing his information and being able to explain the options and different brands and systems to us. We were even able to get a new filter system that only needs changed once a year to save on replacement costs. We also now have a working humidifier system too! Then meeting the install pros, like Mike W. He continued to add to my confidence in King Heating and Cooling. He came in very friendly introducing himself and his crew (he did this any time a new tech would come out), explaining what would happen, answering questions I had going into the install day, and was very respectful of my property (asking where they could park, laying down protective sheets to cover flooring & stairs and they all wore booties over their boots to make sure and show the upmost respect and politeness). I appreciated that and actually didn't even expect that! I also was grateful of how John D came to make sure all was going well on the job. What company do you know of that provides this type of quality assurance, none that I know! King is different, they're not only experienced, but they go above and beyond for their customers! Mike W made sure to help set up our new thermostat and walked me through the app process and answered all questions. The whole experience was exceptional! It's a huge purchase and you want to have confidence that every part of the process is smooth. King knows just how to do that. They have a very kind office staff that welcomes you in and creates a pleasant phone experience too. They also provide updates any time your technician is coming out, sending you a text with their picture and a bio about them. I loved that. Taking extra safety precautions like this is important in our world today. I'm so happy we went with King Heating and Cooling! We'd recommend them to everyone! From start to finish, you will be taken care of with professionalism, expertise and excellence!