Marathon Plumbing, Heating and AC Repair
Company Overview
Established in 1990 in Covina, Marathon HVAC Services is a top choice for heating, ventilation, and air conditioning needs. Our licensed technicians excel in advanced air conditioning setups, complete furnace repairs, and careful maintenance services. Our expertise includes improving indoor air quality systems for residential and commercial spaces. Our focus extends past simple service delivery.
Rely on us for energy-saving, cost-effective options designed to meet your individual needs. Having more than 30 years of experience, we are committed to delivering top-notch quality and ensuring customer satisfaction in every project. Feel the unique benefits of choosing Marathon HVAC Services.
Marathon Plumbing, Heating & Air, a family-run HVAC company, has been serving our local community since 1990. Our services encompass all aspects of plumbing, heating, and air conditioning, with particular expertise in older units. As an independent dealer of reliable American Standard Heating & Air Conditioning products, our experienced team delivers high-quality installations. We also provide the latest in indoor comfort solutions, including eco-friendly HVAC systems and smart technology for remote access, keeping your home comfortable throughout the year.
With extensive experience in residential heating and air conditioning, you can trust that your home and family will always be comfortable. If you seek personalized service, I am always here to address any questions you may have.
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal installation
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Sump pump installation
- Sump pump repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 8:00 AM - 5:00 PM |
Tue: | 8:00 AM - 5:00 PM |
Wed: | 8:00 AM - 5:00 PM |
Thu: | 8:00 AM - 5:00 PM |
Fri: | 8:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Stay away! The Sellers of our home spent over 20K on 2 new units. Less than 18 months later the first floor unit is not working and blowing cold air (in the middle of winter). They wanted to charge $125 just to come out and assess. After spending that much, I would expect them to come out first and diagnose before even thinking about charging the client a fee after so much was already spent.

I highly recommend this company. They repaired my furnace. Ray gave me a very reasonable estimate and the technicians were punctual, professional and respectful.

I would not recommend them to anyone in the future. As a Realtor, I called them out for a quote for my client. Since we were in escrow, time was of the essence. The technician came out, informed me of the $125 fee for them to come out (and I did not recall hearing that when I made the appointment), and he was not able to give me a quote. He had to go back to the office and let them email me the estimate. I did receive the quote by the end of the day, which was timely, but I had questions and emailed back. I never received a response so I had to call another company out. Their fee to come out to give an estimate was $59, they had a tablet there and gave me a quote and did the work same day. I would definitely call that company again. The company that is the subject of this review did adjust the service fee they are charging me to $80 which was better but still unreasonable for the service.

I first meet Ray the owner of Marathon HVAC Service at the LA County Fair. We set a date for him to come to the house to give us an estimate . He was on time and very attentive and listen to what I wanted. Ray then looked over my old equipment and also discussed with me about moving the outside condenser to a new location. He made me aware of the advantage of relocation the unit since it was outside my master bedroom and was rather noisy. He showed me some information on product reliability and then gave me an estimate for complete change out of the heating and air unit. Ray was the fourth company that came out and gave me an awesome estimate. I was very pleased with the price and agreed on an install date. The morning of the install Ray was there reassuring me exactly what the process was going to be . His installation team did an excellent job and was very clean and very professional . I would feel very comfortable recommending this business to my family and friends. Thank you again Ray

Ray the owner himself came by my house for estimate on a replacement a/c and furnace system. I was quoted an American standard unit which was one of the top 3 a/c brands out there.( did some research after getting estimate)
I had some wiggle room and was able to upgrade to a 16 seer vs 14seer unit. 16 seer unit is more efficient than a 14 seer which means extra savings in electric bill. California's standard recommendation is a 14 seer.
I am 100% satisfied with this company service and installation. There was a few leftover bolt and screws I found but no big deal. I know they worked really hard in this hot weather (100 both days) to install. I made sure to give them waters and one Gatorade each day
The new unit is so QUIET, it's amazing!!!Everything is working and im a happy customer.
I will post an updated review in a few months to help advise you yelpers. Would recommend to a friend or family member no problem!

Ray and Marathon are the best around. We've had issues with our AC system for years and went through a lot of shady, low quality and bad work from lots of local HVAC companies. Ray came in and fixed everything at a reasonable cost. He really took his time and explained in detail all the work. They were quick and efficient! they were here and done within half a day to install a new AC unit, retrofit the attic condenser unit for newer refrigerant type, fix the botched job from the previous HVAC companies, checked for leaks and test runs. We are so glad we went with Ray because now that we just got our first hot day of the year we are cool as a cucumber. He is now our goto guy for HVAC issues. Go with Marathon!

Just got our NEW American Standard Platinum 16 seer 5 ton HVAC! Owner, RAY MARTNEZ, was very professional and went above and beyond to give us what we needed. Now we are ready for the Thanksgiving heat wave AND winter on its way.
The Marathon men, Julio, Juego, Gabriel and Charton (not positive of spelling) were ALL fantastic. We interviewed and got bids from 5 different HVAC companies and Marathon was the winner!

Was given their name by my realtor. They are responsive and reasonable. Would recommend to anyone needing their air conditioner and/or heater and furnace serviced. A +.

stay away from this company!!!!!!! set an appointment for $89 service special. they come out and tell me that the unit needs a lot of work. the same night my unit is not working at all!!!! sent an email of possible repairs to get unit working $1800. stay away from this company!!!!!!!

Less than a month after I paid for a inspection and service, the unit stops working, and I'm told I have to pay again to get them to do the inspection they didn't do properly the first time around. No thanks! I expect the service charge to last at least 30 day, or the company to stand by it and say we will send someone over to take another look at no charge. I will keep looking for a company that honors their work more.