HVAC reviews in Covina, California

Received prompt service with a professional and courteous representative who did an outstanding job.

I had a great experience with Marathon during a heatwave when my AC broke down. A neighbor's recommendation led me to them on short notice, which was greatly appreciated. The service was efficient, with Madison getting me booked for the next day and Nino arriving promptly to diagnose and fix the issue. He was friendly, knowledgeable, and went above and beyond by arranging a new unit delivery the following morning.

I've had two instances with Marathon for routine maintenance on my HVAC system since taking over Aloha Air and Heating in Whittier, CA. The second time was equally impressive. The technician, David Lee, was friendly, knowledgeable, and extremely helpful. His professionalism made me confident in his abilities. Given the excellent service I received from David Lee, I'll continue to use Marathon for my HVAC needs, ensuring a healthy system with their expertise.

Our heater was serviced by a guy named Nino who turned out to be incredibly knowledgeable and ridiculously friendly - what a great combination! He made the whole experience super pleasant. Great job, thanks for fixing our heater with such expertise and warmth (no pun intended)!

Reuben's visit to install our home thermostat was a relief. Despite my own botched attempt at installation, he handled it with professionalism and kindness. He calmly walked me through the mistakes I made and completed the job in just over half an hour. Quick, efficient, and courteous - exactly what we needed.

Josiah provided top-notch service with his friendly demeanor and expertise. The work was completed efficiently and on time. Given that the price was in line with the competition, I trust him to be a reliable choice for similar services in the area.

I initially considered holding back on sharing my experience, but ultimately decided to post because while the initial setup was top-notch, things took a turn for the worse during the installation process. I want to make it clear that Alejandro and Tomas, who were part of the installation team, were exceptional - hardworking and went above and beyond to ensure everything was done correctly.

David, with whom I worked throughout the process, was also very attentive and understanding, going out of his way to guarantee my satisfaction. However, some issues arose on the weekend, but thankfully they were resolved without major problems. Overall, I'm pleased with the outcome.

My only cautionary note is that if you're planning a complete system replacement, avoid scheduling the installation for a Friday - plan it for earlier in the week instead. That's my advice. Despite my reservations, I've been impressed with Marathon HVAC and expect to receive top-notch service moving forward.

Highly recommend this business, particularly for their thorough diagnoses and attention to detail - even with complex issues like ours. The staff showed great professionalism and communication skills, making the experience seamless.

I had a great experience with this company. They made it easy to work with and kept me in the loop throughout the process. The two technicians who visited my home, Ginnethon and David, were extremely helpful and professional, addressing all my concerns. I'll be using them again.

I had a great experience with this company, thanks to the tech who visited my home. He was extremely knowledgeable and put in extra effort to set up my new thermostats. He was also very personable and friendly, making me feel at ease throughout the process.

Justin from Marathon Plumbing did a great job.

Nino's expertise was impressive. He showed up on time, was friendly, and offered practical advice to maintain our home's indoor climate effectively.

The technician who serviced our HVAC system today was knowledgeable and experienced in diagnosing issues with our aging component. She identified the problem and replaced the faulty part, which greatly improved the system's performance. What impressed us most was that she took extra time to clean the surrounding area of our unit, a task typically not included in her services, demonstrating a commitment to excellence beyond what we expected.

Luis provided excellent service for deep cleaning our HVAC system. He showed up ahead of schedule, was courteous, swift, and unobtrusive. Before and after photos were shared, demonstrating his attention to detail. His professionalism extended to cleaning up thoroughly, making him a considerate and pleasant contractor to work with.

Ricardo is a standout employee who brings value to the team through his friendly demeanor, prompt responses, and effective communication skills. He conducted a thorough plumbing inspection and replaced the copper water pressure valve with impressive attention to detail. Jessica in finance also demonstrated great knowledge and understanding when addressing my issue, making the experience positive and hassle-free.

We recently got a new HVAC system from Marathon/Dependable Graham and everything went smoothly. The team we interacted with (Ken, Alex, George, Isaac, and Milo) were all pleasant and courteous. It's clear this company runs like clockwork.

We've had a great experience with this home services company, which consistently delivers on reliability, promptness, and responsiveness. Their techs possess in-depth knowledge of their trade and know how to cater to customers with distinct requirements. The team's integrity and honesty shine through - kudos to Nino for setting the tone.

Nico did an excellent job fixing my HVAC systems. He came across as friendly, knowledgeable, and transparent about what was wrong. The job was done thoroughly and efficiently, getting me back up and running after a 4-day heatwave without AC. Nico's professionalism and attention to detail left a great impression.

Josiah is exceptional - highly professional, polite, and genuinely knowledgeable. He clearly communicates his work process, making it easy to trust his expertise. His kind demeanor makes a great impression. We'd definitely welcome him back if needed and appreciate the referral that brought him our way.

I had a great experience with Marathon Heating and AC. Their technician, Dave, was knowledgeable and courteous. He provided excellent service and I'm very satisfied with the work done. I highly recommend this company for HVAC and plumbing needs. If you're looking for reliable heating and cooling expertise, ask to speak with Dave - he's top-notch!

We had a great experience with Marathon Plumbing/Heating/Air, thanks in large part to Joziah. From the moment he arrived, it was apparent that he's the real deal. He showed up on time, was polite and clearly knows his stuff when it comes to HVAC systems.

Joziah took the time to explain what was wrong with our system and laid out some solid options for fixing it and keeping it running smoothly in the future (we opted for the annual maintenance plan which is a great deal). The work got done quickly and he made sure everything was working properly before leaving.

What really impressed us was his focus on finding a solution to our problem, but also taking the time to share some useful tips on how to keep our system running without any issues. It's clear that Joziah has a lot of technical expertise and is engaging to talk to too - we really enjoyed meeting him.

We'd had some good interactions with Marathon staff before (I'm not sure who I spoke with when making the appointment, but they were great) and it's evident that this company only hires smart people. We'll definitely be using their services again because of that.