Hi folks! I just had to go on Yelp and leave a raving review of Mike's Heating & Air Conditioning. He has Installed HVAC units for me twice: one in 2003 and another one this past week (7/12/25). He is an outstanding person who can be trusted to do an outstanding job for you. He goes above and beyond your expectations and communicates well. He explains everything you need to know about your unit. I know you will be very pleased if you choose Mike for all your HVAC needs. He gives prompt service and gets the work done fast. read more

Professional and quick to respond. They do great work and affordable. I trust their professional opinion. Highly recommend.

Mike was very professional, he sent his team to took care my AC issue. The technician was professional and knowledgeable. I will definitely recommend to my friend and family l. read more

Called Mike (he answers his own calls!) on a 107-degree day afternoon. He routed Brian to my home to diagnose a dead AC unit. He could have stopped at just the blown fuse but he did a thorough troubleshooting job advised me the capacitor was good but showed me that it could cause trouble in the future (the top was starting to bulge a bit). He swapped it out, ran the system, checked temp and the system is up and running. My family really appreciated the fast service during record-breaking heat. Bonus: Its great to support a local company! read more

Mike & Brian are an A+ Team They came to Home in Chino Fast service our Home are all Disabled and Mother in Law Has Dementia They Install a Brand Whole Unit Outside they took them Less Than 2 Hours we are very please with work I Totally recommend 100% if Anyone Has problems call the best tell them Luis From Chino Send you read more

Mike's Heating & Air Conditioning - Heating & Air Conditioning/HVAC Near Me

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Mike and his team gave us prompt service at a very fair and reasonable price. I was referred to Mike from a friend that said that he was the best. Mike gave me a detailed consultation over the phone, diagnosed our likely problem (over the phone) based on his experience and gave me an accurate quote of what it would take to fix it. Mike went above and beyond with his delivery, was great about following up when we needed it, and he checked on us after he completed his work. Mike was able to fix the older air conditioning that we have, and we are going to use him to upgrade to a new unit eventually when we have saved up our money. I strongly recommend him. Our old air conditioning is now working perfectly on an extremely hot day. read more

Mike is the BEST !!! I have used him on all of my properties and am so lucky to know him !! Along with Brian,,,they take care of everything,,,Total Professionals,,,reasonable, clean, and prompt. Having them service my HVAC needs, is like hanging out with friends ! I have used their service for 28 years, and would never use anyone else ! I just had my 35 year old HVAC unit replaced and Mike . as always, did a GREAT job. ...BTW,,Mike is the reason that my old unit lasted 35 years !!! read more

Exceptional Job! Clean and efficient installation during the hottest time of the year! Mike and his team are extremely helpful and guided us through the process honestly in order for us to make the best decision. His price was the best by far (compared to other companies, such as NexGen and Home Depot) and his service made us feel like family! read more

Mike's Heating & Air Conditioning - Heating & Air Conditioning/HVAC Near Me

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Over the years, I've used Mike's on a number of occasions for both my home and rental properties. I've Never been disappointed; but rather, always find myself "glad" that there are still a few service companies with talent, reliability, ethics, and Very reasonably priced. Mike's definitely deserves "referrals" and "repeat business". Pat - Fullerton, CA read more

Excellent Service, Jason worked and acted like a real professional. He got right to business with diagnosing my HVAC. When there is no refrigerant in your system there must be a reason and there is 100's of feet of copper tubing that could fail. Once he found the leak in the King Valve, he found one and replaced it, and recharged the entire system, did a final check in about 3 hours. If I had a business, {any business} I would hang on to a guy like Jason, he's worth a little higher pay. The work and charges were fair, reasonable and the best you will get. There's no question, when I need help with my HVAC, Mike's is my first call. read more

Replaced a 35 year old furnace and AC which used Freon. Due to Government ban on Freon in 2019 the Feds are allowing for a tax write off on these old units. Got a new unit from Mike. He did a superb job. We are paying less for the electric bill and hopeful off Tax refund. read more

Look elsewhere if you want work done well. Mike does the bare minimum. He is appealing to people looking to save a few bucks but be warned he does the least amount of work as possible. If you want your heating and air done right, look elsewhere. Mike thinks he knows everything and you will spend more money in the long run finding someone to fix his mistakes. read more

Just had Mike install a brand new Trane slim size 5 ton unit at my home and was seriously impressed by the job they did. I will definitely recommend Mike to anyone looking for Heating / Air Conditioning. Great prices too! read more

Mike's Heating & Air Conditioning - 5 ton Trane slim unit. Much needed for my narrow side yard. Thanks Mike! - Heating & Air Conditioning/HVAC Near Me

I called Mike's on a Saturday morning after my AC unit stopped working the night before. Mike's wife Anna took the call and she was a pleasure to deal with. She arranged for Mike to come out by noon. Mike arrived around 1130 and had my AC fixed and running great within about 15 minutes, after identifying a bad capacitor. Mike was very friendly and even chatted with my two yo son. I'm happy to support a family owned/run Diamond Bar business and I will definitely be calling Mike next time. His price was reasonable and he even gave a one year guarantee. Thanks Mike and Anna! read more

Great service. Great guy and crew, Mike was on time, honest and affordable. My AC is good as new again!

Excellent service, very knowledgeable, extremely personable. On a week where every AC company told me I needed to wait a week or more for an appointment. Mike's heating & AC arrived withing 2 hours. Not only did Mike and Brian remedy the issue at hand, but gave me tips on how to prevent the issue in the future, and to keep my eye on potential issues that may occur. Their professionalism, and friendly demeanor, are just a few reasons on why I will be recommending Mike's Heating and Air conditioning to everyone I know who needs AC service. read more

Our air conditioner was not working in the early morning. I called Mike's at 6:00am and he came out at 7:00 that same morning as promised! He took care of the problem right away. Good guy who was knowledgeable, nice and effective. We are grateful for his speedy response and professionalism. read more

Mike's is the best ! We called Mike at 8am and he was at our home in 30 minutes. He diagnosed the problem with our heating unit and replaced it with a new unit . He is responsive, personable, and extremely knowledgeable . He is the best in Diamond Bar for Heating and Air . read more

I can't say enough positive things about Mike & his friendly well trained staff There is nothing better than knowing when we are in need of reliable service - Mike is there! Always friendly, knowledgeable, fast & HONEST Mike (909) 396-4489 read more

Mike came out within a few hours of my initial call to take a look at my A/C unit that had unexpectedly quit the day before. He took one look at it and within 15 minutes he had it back running and cooling like a champ. My stupidity over trying to save a lizard that had fallen into the unit. I had pulled the top cover off and in doing so allowed a bracket to fall down into the unit and obstruct the fan which then overheated the motor. Thankfully the motor's built in failsafe shutdown went into effect and the unit shut itself down. Once the bracket was put back in place the motor and fan purred back to life and the unit immediately started pumping out cold air. Mike didn't even want to service the unit as he said it was putting out ice cold air. I paid for the service call, gave him a little tip and off he went and we were both happy. I will definitely give him a call next time my unit needs a medic. read more

Mike and Brian are very knowledgeable and reliable. I contacted Mike because of a leak in our unit that was dripping from the attic. Mike understood the importance of fixing it, because of the summer heat and accommodated me in fixing the problem the following day. They provide an extraordinary level service at affordable prices, which gives me all the confidence in working with them for my heating and air needs! read more

Mike and Brian are an excellent team. I was looking to recharge my air conditioner late Saturday when I got a hold of Mike. While he was closed that day, he promised to come over Sunday morning at 9. He was prompt. He saw it was a bad leak and he quickly looked around to see if he could find it. Another air conditioning service had informed me that would have to do an extensive leak test over the winter. Mike, however, found it fast in the evaporative coil because he felt oil in the exhaust PVC tube. He was able to get a replacement coil on Monday and was prompt in coming over at his appointment time at 10. Because my leaky evaporative coil had been bolted in from behind, he had to cut it up to remove it when it should have just slid out. He replaced the coil with one that did slide out, put foil on to prevent leaks, and cleaned up nicely. While the work obviously cost more than a simple recharge, it saves money in the long run, since you would not have to recharge it twice and the price of refrigerant is going up monthly. read more

Mike was awesome! We had him come out to fix my mom's super old ac last year and he came out immediately. Replaced a part and said it was just a temporary fix because the ac was over 20 years old. This year the ac broke again and we decided to get it replaced. Called Mike up and he showed up within 30 minutes. Replaced the ac, coils, condenser all within 2 days. Saved my mom from being without an AC in the recent heat wave. Not only was he quick with the replacement, but he was very reasonably priced. Thanks again, Mike. Really appreciate it! read more

Mike's AC is the best!!! This guy always goes the extra mile to make sure everything is just perfect. His prices are very fair. I have recommended him to many of my friends and they all love his service. I can not say enough about how wonderful his business has helped us. read more

I had a problem with my AC unit, the Ac starts but no cold air coming out. I called Mike he drove all the way to my home in Brea CA , checked the system, gave me a very reasonable estimate in less than 10 mins, i was astonished by his professionalism in this industry, I previously had called 2 different companies locally and they made it work, but immediately after they left the AC stopped giving cold air. Mike was able to fix the Ac unit and since then everything is working fine. Thanks God there are still some people honest in this industry. If you want a speedy, reasonable, and long lasting repair. Please call on mike : ). I appreciate his speed response to my phone call and honesty when giving prices. If i ever had a problem in my AC, now, i know who to call .. read more

Mike is the best person for any of your heating and air conditioning repairs. After contacting other businesses in the area who wanted to sell you a new air conditioning unit instead of fixing an existing problem he replaced the problem part for a fraction of the price. He is very professional and did a wonderful job. This is the second time I have used his services and will be calling him in the future. read more

Mike to the rescue! Called at 9:30 am, he was here at 3:15 pm same day. This is the 2nd time I have used his excellent service. This time for a different part for my 20+ year unit. read more

My family has been customer's if Mike's for many years & each new year he doesn't disappoint. Recently he came on a service call & revived our AC unit. He came daily checking pressures, etc. Super happy with his work ethic & knowledge. Thanks Mike!! read more

I had an extremely pleasant experice with Mike who went beyond my expectation. The central A/C was down and I called him late in the evening and he rushed with in 15 minutes. I got to admit that he's very professional and savvy in his work and diagnosed the problem in minutes. His prices are very reasonable and unbeatable. I highly recommend his service to any one. read more

Great guy. Great service. He replaced our A/C unit. The cost was very reasonable. I am 100% satisfied. read more

Competitive price backed by a 10-year warranty for a Trane brand name system. Prompt customer service on the phone. Highly recommended for those who want a high-quality A/C unit at a reasonable price.... read more

Our AC broke last weekend and we were desperate in a 102 degree temperature. Given it was a long Labor Day weekend, we called on Mike's who said he will be able to come the next day, but will attempt to be there same day. To our surprise, he was at our door at 6:30 PM. He was very courteous and professional, and all it took him was 5 minutes to figure out the problem. Apparently the electrical wiring on the back of the unit was loose and tampered with (Mike thinks it was chewed on by a rat). Mike re-wired in 15 minutes and charged us only the service call. He refused any extra $$, but asked for a cold bottle of water, and was off to his next call. Thank you Mike !! read more

Our condensing unit stopped working on one of the hottest days of the year. Tried contacting several a/c repair businesses, but either they were too busy and couldn't fit me in for at least five days out, left several voice messages and most wouldn't return my calls. After seeing A+ rating on bbb I decided to call. Spoke with his office at 8:40 am and they said he would call me back. Two minutes later Mike called me back. What service! He came two hours later as he said he would. He showed me the blown capacitor. He installed a new capacitor and added a starter booster because the unit was over 10 years old. He said the starter should extend the life of the unit a least another 5 years. He washed down the unit with a garden hose and recommended I do likewise once a year. He gave me a one year guarantee on his work. Even threw in a new filter. I was also fortunate to be near his business so he fit me in on his busy route. Totally happy with his service and he was cordial and honest the whole time. read more

Not sure if I spoke to Mike, but some guy hung up on me halfway through our call. If the guy is going to be short with a potential client, I shudder to think how he'll treat me once he gets my money. read more

Absolutely horrible attitude and service. I cant believe they could be a part of the walnut community. I have lived here for over 20 years and i cant understand how they can still be in business with their type of incompetent attitude and stuck up service. read more

I was screwed by another contractor who did not install the coil and AC condensate line correctly and caused thousands of dollars of damage to my property. That contractor did not want to fix the issue because the work is out of the warranty. Not only Mike fixed the problem, he provided me with a report to explain what was wrong with the installation, so I can present it to the license contractor's board. Mike is awesome. I would definitely go to Mike if I have any AC/Heating work. read more

The wife/woman that answered the phone is completely ignorant of what services they have to offer. I wanted to buy two of their best air conditioners to install in the house if it was impossible to fix the current one that just broke down. But she kept going around in circles about payment after he was finished and that I had to physically be present to witness him working. I specifically told her that I was willing to pay upfront for the service before he arrives and any additional payment I can just pay the total in cash or through my card. But she had an attitude worst than most of my patients that are ordered by the courts to see a psychologist or psychiatrist. How can you have a mentally unstable person answering phones? It just doesn't make sense. read more

I called around 730 am, I am not sure what man I was talking to but I let him know that my ac is only blowing out hot air and I wanted to know what a service call cost. he let me know it was 49.95 and asked where I ws located and when I let him know Rancho Cucamonga, he said he had two calls there this morning and he would be able to come afterwards. I then sked if they offered senior discounts because it was for my father's house. He said yes and then rudely asked who was paying. I let him know that my father wasn't home at he time and I was trying to jut get it looked at for him. He then said well I need to know if you or your father are paying and I told him I wasnt sure depending on what was wrong with the unit. He then said "well you havent given me the address yet." So I politely replied, " you know...I'm just going to call someone else." and yet again he rudely responded, " ya you should." and hung up. I have never had work done by this company, so they may due good work but sure as hek have horrible customer service. He seemed more concerned about the money then my father not having cold air in 100 plus degree weather! read more

Mike is an honest man. He came at a short notice, and didn't try to oversell. HIGHLY recommended.

Our AC broke down on one of the hottest weekends of the year and we had tried, without any luck to have it repaired. After numerous attempts to schedule a service call with our regular AC guy, I contacted Mike's AC. Shockingly he said he was available (before another service call in Ontario) and would be at my home in 15 minutes! He was professional and knowledgeable in regards to my AC unit and had it up and running in 30 minutes (for a very reasonable price). Needless to say, we now have a new AC repairman. Thanks Mike, you were a lifesaver last weekend! read more