Wow!!! I called Mario on Saturday morning, and he came to my house in about 2 hours. He diagnosed that I had a bad compressor (still under warranty though). He... read more gave me a fair & honest price to replace it and charge it with freon. He did it all within a few hours!!! I highly recommend him and his company to anyone who needs a/c work done. 5 stars all the way!!!

  My mom and I want to thank Marwan for his great customer service! He quickly and efficiently fixed our problems. The price was reasonable. We will definitely become long time... read more customers! Thanks again!!

  Marwan came to install central ac & heating to our home. Did a very good job, organized and worked within our time constraints to get the job done.  He is... read more very knowledgeable and worked within a reasonable price. He also showed up on time everyday and always sent an ETA. Thank you Marwan for a great job! We are very excited to have our central ac & heating.

  This guy is lying. Here is a copy of the invoice. It is amazing when Mr. Marwan spent almost an hour pumping Freon when it was not necessary. All he... read more was trying to do was make more money out of me. Pathetic to say the least

  Incredible service!!
We were dying in the 101° heat with a broken air conditioner, and he was able to fix it IMMEDIATELY!
Despite the high heat, he managed to enter the attic... read more to fix our circuits in a quick and excellent way!
My family and I are incredibly thankful for his hard work.
I recommend his service to everyone!

  Marwan showed up and saved the day! Fixed leak from AC system. Great customer service and honest guy. Will definitely keep him in mind for future maintenance on our system.... read more Highly recommend!

  My A/C stopped blowing cold air last Sunday morning. I was doubtful that I would be able to find anyone to head over to check our system out for at... read more least several days....and I was dreading not having A/C on such hot days. I found GMC on Yelp and decided to call based on good reviews.
Marwan returned my call in 5 minutes and told me he could be over to my home in Claremont within 2 hours.
He showed up exactly when he said he would and quickly diagnosed my problem. He replaced the capacitor and my A/C was blowing cool air within a half an hour.
I highly recommend GMC and am very grateful for Marwan's excellent service!

  Marwan was amazing. He took care of our situation asap with no hesitations. I highly recommend him and his company!

  I contacted GMC to have my dryer vent cleaned and checked as my dryer wasn't venting properly. After having another company come, it was obvious the job wasn't done correctly.... read more GMC came out the day I requested and I couldn't be more satisfied. Pretty much everything I was told by the other company was incorrect, including where my vent ran to!  GMC came in, located the problem, cleaned out the vent, hooked my dryer back up, checked to make sure everything was good and that was that. Thank you GMC and my calendar is already marked a year from now to get it cleaned again, for the foreseeable future. Thanks

  After 17 years in the house, I didn't know about cleaning more than the hose and the box. Clothes stopped drying on one cycle. I had a burning smell. I... read more researched and understood my issue; a clogged exhaust pipe. I found GMC Heating &Ari Conditioning. They are close, friendly, and reasonably priced. One phone call had me on the schedule and as quick as you can say GMC Heating & Air Conditioning he was here with all of the correct equipment and 90 minutes later all of the lint was removed. No more drying 3 times for the same load. No more chance of fire from that impacted lint in the exhaust tube going up to my roof venting outside.

  Messaged through Yelp and received a message back in under 2 minutes.  Service person arrived in under 2 hours.  Fixed the problem in less than one half hour.  Charged a... read more fair market price and was VERY professional.  It is July and we are having a heat wave but he was still able to provide exceptional service, whereas, everyone else that I messaged said they were unavailable for weeks. Highly recommend!

  I went based on the reviews, and guess what, it came out perfect, he is really deserved the 5 star. He is Very professional, on time, and the price is... read more very reasonable, i would definitely will contact him if I come up with any problem with my heater and the Ac. If you have any heating/cooling problems don't hesitate and call Gmc.

  Marwan is the right guy to do the job right and in the right way! He helped me last year with my air conditioner, and I called him again to... read more help my parents' unit.  He gave an approximate same day appointment, and then he called again when he was about 10 minutes away. Marwan knows his job and does it well! He's honest and fair! He told my parents that it'll cost more money to fix the outside unit compressor than to replace it; plus, the old unit was out of warranty (the old unit was about 15 years old). He got the new unit and put it in early the next day. My parents and I are so thankful for Marwan!

  AC was blowing out warm air and we requested a quote at 9:30pm. Marwan responded within minutes and was able to come check the unit out at 8am the next... read more morning. Very friendly and helpful, and got the repair done in 30 minutes with a very reasonable price comparing to what others were quoting. Highly recommend.

  My A/C stopped working on Monday June 10 during the start of that hot weather.I called at least  5 other companies in the area and all said they weren't gonna... read more see me until a week.Living in Pomona I could not go without a/c.So I called this one guy from Pomona and he said he was gonna show and never did.He didnt even call to cancel.Finally I found Marwan through Google and saw that he had good Yelp ratings.I called him on Friday and said he can be there at 6pm.Very punctual and proffesional.Check and found that my compressor was no good.I already had an idea of what they could cost.He gave me a fair price and said he can have it done on Saturday by 12pm.He arrived and had the job done and documented everything and I misunderstood a verbal agreement and he was very generous to honor my mistake.If you want things done with no games and not wasting time because time is money you need to do business with generous company.

  Marwin is great ~ Mt Baldy village no issue.  My home is a bit difficult to locate, Marwin didn't give up ~ found my home and got my furnace up... read more and running in no time.  I now have a go to guy ~ thank you!

  Our AC went out on a Saturday evening and Marwan was here Sunday morning at 9am to come fix it! He is very professional and his work is amazing. His... read more communication and his response time is quick, something we all look for in a repair company. He is very nice and will answer any questions that you may have. I look forward to having him as my go-to AC repair man. I will highly recommend him to all friends, family and Yelp community!

  I normally go with the people who have the most positive reviews but this place was the only one available to come on a SUNDAY, the same day.  

Temperature in... read more my office was getting to 82-89 degrees and I needed to open for business.  Marwan came within the hour and fixed the problem in less than an hour and charged very reasonable rates.  

That's my experience, I'm glad I have a go-to guy for AC!

  Marwin saved us from some serious sweat. During the first heat wave of the season, he made time to help us quickly diagnose and repair our ac unit. We called... read more literally 20 places and he was the only one that said he would fit us in. He came when he said he would and repaired our old unit. He did not over diagnose or over charge. He was very fair and reasonable. Thank you!

  Mario is awesome and fantastic! Great service, super fast response, very friendly, very reasonable, honest, I could go on and on but I think you get the picture. If you... read more are on the fence about who you should hire for your Heating & Air Conditioning needs, look no further. Mario and GMC Heating & Air Conditioning is well above average and very deserving of their 5 star service. Mario has helped one of my clients fix their A/C when another company didn't properly install their new unit and I have hired him myself for my personal residence. Always excellent service and great prices. I highly recommend. Thanks again Mario!