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 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. read more

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

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 was trying to do was make more money out of me. Pathetic to say the least read more

GMC Heating & Air Conditioning - Copy of the invoice proving that Mr. Marwan showed. Hope this will jog his memory - Heating & Air Conditioning/HVAC Near Me - Upland, California

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 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. read more

GMC Heating & Air Conditioning - The lint from the dryer exhaust hose that goes up to the roof. Thank you GMC Heating & Air Conditioning - Heating & Air Conditioning/HVAC Near Me - Upland, California

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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 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! read more

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 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! read more

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 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! read more

GMC Heating & Air Conditioning - Heating & Air Conditioning/HVAC Near Me - Upland, California

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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 customers! Thanks again!! read more

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 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! read more

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 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! read more

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 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! read more

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 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. read more

GMC Heating & Air Conditioning - New unit - Heating & Air Conditioning/HVAC Near Me - Upland, California

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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. Highly recommend! read more

Marwan came into the church, assessed what was needed and within two days we had 3 new a/c units. They work great and we are so thankful for such quick service. Prices are the best, quality of work was the best and we are so happy with all that he did. You're lucky if you get him to work on your place. David, upland read more

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 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. read more

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 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! read more

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 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!!! read more

My A/C stopped blowing cold air last night! I woke up and called several places that were telling me that they didn't have any appointments until next week. I came across Marwan GMC heating & air on yelp and read some great reviews. He was one of the very few a/c services open on a Saturday. I called at 8:10 in the A.M and he was at my home by 11:00 A.M. He made sure to give me a courtesy call 30 min. before to let me know he was on his way. He was in and out within no time. He found out what the problem was quick! Within 30 min. or less he fixed my a/c. He provided great service and his pricing was reasonable. I will make sure to refer him to friends and family. Don't hesitate to call. read more

I called Mario in the morning and he was ready to come over right away. I had to have him wait a little to meet with my husband instead because I was at work. When Mario showed up, he instantly found the problem and had it fixed within a half an hour. He was prompt and concise. Would recommend him to anyone. He did a great job and his price was very reasonable. read more

I scheduled an appointment to have my air conditioner looked at since it wasn't working properly. I have always wanted to replace the whole heating/air conditioning system as it was REALLY old, but the estimates I received from other companies were way out of my budget. Marwan from GMC Heating & Air Conditioning came out to look at my old unit and told me he could get up and running at a very reasonable price. I made an appointment to have him come out the next day. Out of curiosity, I asked Marwan what it would cost to replace the whole system. I figured I'd receive an estimate like the others that were not in my budget. SURPRISE! Marwan quoted me a price that was far less than the previous estimates I received. I asked him a ton of questions because I couldn't believe he was going to replace my unit (like for like) at the price he quoted. Sooo...instead of performing maintenance on my old unit, I decided to replace it with a new one! We scheduled the new install a week later. It was a very cold day and when he turned the heater on to test it, my house was warm in no time. Now I can't wait for a hot day to see how the cold air works! I HIGHLY recommend GMC Heating & Air Conditioning for all your AC/Heat needs and if you've been wanting to replace that old system and think that it's too expensive...ASK FOR A QUOTE! I bet you will be surprised! Thank you, Marwan & GMC Heating & Air Conditioning!! read more

Marwan did an excellent job for us. Our 8-yr old, hard wired thermostat started intermittently going "dark" for periods as long as 12 hours and then mysteriously coming back on again. Saturday morning -- two days into a weeklong heatwave -- we were sure it was dead. I called GMC Heating and Air Conditioning at 8:00am on a SATURDAY. Marwan returned my call promptly, promised AND delivered service by 3:00pm the same day. After troubleshooting the issue, all signs pointed to a faulty thermostat. The correct voltage was coming in to our attic furnace, and the correct voltage was going to the thermostat. Marwan changed the thermostat with the new version of the same thermostat we've had all these years (he had several brands & styles on hand). Fifteen minutes after he left, the thermostat went dark again. I texted Marwan. He turned around and came back, immediately. Back up in the 103 degree attic again, he discovered that the circuit board was blown. He had to order the part, but promised he'd be back by 8:00am Monday. He left the new thermostat in place, and gave me back half of his fee to hold as a guarantee he would be back. Marwan was at our house Monday morning at 7:50am. Replaced the board; reinstalled our original thermostat (because it wasn't broken), and was on his way. He charged us a fair price, was prompt and KEPT HIS WORD! I highly recommend GMC Heating and Air Conditioning and will definitely be a return customer! read more

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. 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 read more

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 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! read more

We had been without a.c. for a week because a bunch of old guys thought it was smart to try and fix it. So they bought a new one got the old on out and all we needed was to have the old one hooked up, we called got an estimate a very nice one at that, seeing as most people won't finish a project almost done or they price is for a whole new unit and instal it self, but my 2 year old is glad they were able to get it done it just a morning. Thank you so much. read more

We have called Marwan twice with problems at our home and a rental property. Each time he has been quick and professional, with a great price! He's a really good guy and really trustworthy, often recommending ways to save us money instead of paying more for something we didn't need. I would not consider calling anyone else for AC/ Heating problems. Really excellent service, would highly recommend to anyone!!! read more

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 and running in no time. I now have a go to guy ~ thank you! read more

Yesterday at our home our air condition went out we couldn't get in touch with our property manager to help us so we had to take matters in our own hands, so we called many other air condition companies, but they just were to booked and they said that they couldn't get to us today or maybe the next day, so we didn't give up we looked in some adds that came in the mail and I found GMA Air Conditioning, and spoke with Mario, and he said he could come in 30 mins, and in about 25 min he was at my house, he fixed the problem in about 20 mins, and the price was reasonable, and he was very nice helpful and professional, Mario answered all our questions, I would recommend this company to anyone that needs there air condition fixed and ask for Mario. read more

Love the fast response to my call. They were able to come and fix my a/c problem within a half an hour. The guys were professional and explained everything to me after they were done. This is the second time I have called them and both times they did a great job. I will recommend their services! read more

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 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. read more

Service was great! Very fast and clean technician. That's important to me! My ducts are clean. I will recommend them to my family and friends. read more

I called GMC Heating&Air based on a referral from a neighbor. Marwan came out and looked at my AC unit outside and saw that the fan motor wasn't working properly. He quoted me a price for a new motor. But then advised me that he had a used motor from another job he did. It would save me almost $200, so I said absolutely. He did all the work switching out motors. Then when we thought all was good, the unit didn't work. Marwan told me he needed some time to get another part that he thought would fix everything. Nope. He tracked down the main issue, it was the actual compressor in the unit. To fix it, recharge it, and parts would be only a couple hundred cheaper than a whole new unit with a 5 yr warranty. So of course I went with that. Marwan came back same day hooked everything up even with me not home. Then came back the following morning to finish charging up the unit. Now my house is liveable again. ..lol. HIGHLY HIGHLY RECOMMEND Marwan. read more

Marwan came out on a holiday within the hour this morning. He saved me from the heat. He had my AC working within the hr. Excellent customer service. Thank you! read more

No one could beat Mario's pricing for a complete remodeling job... Mario installed complete 5 tons Train system at an amazing price, 50% lower than the best price I got in OC!! The quality was super, the service was clean, prompt and on time. read more

This company is a scam. Due to the excessive heat wave we been having...my ac hasn't been getting cool. Which is why called this company, Marwan came out wasn't able to fix or do anything just wanted me to purchase a new air conditioning system. Wish he would have told me they DON'T REPAIR old air systems over the phone. Waste of my time and on top of that I still had to paid him $50.00 for nothing. And I'm left me with the problem to still fix. Unbelievable!!! Called another company moments later they came out and fixed the issue without me needing to purchase a new system. read more

Marwan is extremely professional and passionate about his work. He is honest, thorough and does what it takes to ensure the job is well done. read more

I called five different places at 8:30 PM in desperate need for air-conditioning repair and GMC Heating and Air Conditioning was the only company that actually picked up their phone on a Saturday night. They came out first thing this morning on a Sunday and was very quick and reasonably priced. Their number is now in my phonebook for any future needs. Marwan Alagha is reliable, dependable and I highly recommend!!! read more