Just had a new 3 ton air conditioner installed. Great service and fair price. They even called the day after installation to make sure that everything went well and the new machine was working correctly. read more

Marvin's Heating & Air is the best. They are always available to call. They offer quality service and answer all our questions. We find them honest and highly experienced. They are professional s who show up on time and do excellent work! read more

Courteous and promp. Professional. Been associated with them for over 30 years. Yearly furnace and ac check is a valuable service provided.

The quality of work and service has been outstanding over the numerous years of service Marvin's has provided us. Their Comfort Club has also provided their clients with the ability to have a Fall and Spring checkup in preparation for seasonal change. In 2025 we changed from a mini-split system in our studio to a heat pump system. Their installation time was incredible along with the quality of work and product. When you combine quality work, informative in person interaction and 5 STARS it is a very special organization. read more

I've used Marvin's Heating & Air for 30 years starting with Marvin. David, his grandson carries on the tradition. You will not go wrong using Marvin's Heating & Air. read more

I cannot say enough great things about David and his business, Marvin's AC. When our compressor went out a couple of years ago, I asked around, and had almost never heard such universally great recommendations for a business. David gave me the choice of a full replacement (old unit, been through a flood in a past life, not a surprise) or to just replace the compressor. I chose to replace the compressor, knowing that this unit was old when the previous owners installed it, and that I would be looking at replacement at some point. When the unit let out what I assumed was a death-rattle, and stopped working, I assumed its time had come. I didn't hesitate to call David, and he was able to fit us in the next day. I was steeling myself for the quote for replacement...when David discovered that it was the simple matter of a plugged drainage line. He fixed it on the spot, and charged me just over $100.00. It was like Christmas came in April. I have been saving toward a new unit, but was only halfway there. It would have meant juggling, and credit cards, and stress. Here's the deal - I would have done the replacement, even though I wasn't ready. I expected it. If there was ever a time when a business like this could have pushed and up-sold, this was it. It is testament to David's ethical business practices and goodness as a person that he did not take advantage of the situation. Side note - this happened in the middle of Covid-19. David and his assistant arrived with face coverings, and kept them on for the duration of the visit. They observed appropriate distance, and were cheerful and reassuring in this stressful time. There is a reason Marvin's AC has been successfully servicing San Marcos and the region for over 30 years. This is just the kind of human touch and care that is missing from larger companies with techs working on commission. David will always - ALWAYS - have my business, and I highly recommend that he get your business too. read more

Cleaned our ac coil at a reasonable rate. Hired to tune up ac yearly also at a reasonable price. Definitely recommend!

Great company. David was able to work me in on the day I called and took care of the problem in 20 minutes. Honest and reliable service.

Our central AC unit wasn't cooling as it should. We called Marvin's on the advice of our neighbors. It wasn't an emergency by any means, but David and Farrell showed up later that day. Turns out our condenser showed we can 60 psi of freon, when it should have read 70. They fixed us up in no time and were on their way. The fee was just under $100. Fast forward two days.I'm on the phone with a client, when Total Woman waves at me and whisper-shouts, "The air conditioner's leaking!" Yikes. That does not sound good. It looked even worse. The wooden floor in the hallway was wet, and I saw water dripping from the ceiling. Total Woman called Marvin's, as I climbed into the attic to mop up the leak. It must have been 130 degrees up there, the kind of heat that dries your sinuses and makes your skin itch. But in about 30 minutes, the AC's drip pan was bone dry. We also kept the unit off until Marvin's arrived a couple hours later. This time, David arrived, headed to the attack for a quick look at the unit, and then opened the drain pipe that leads outside. The thing was clogged with algae and minerals and God knows what else. David explained that when these pipes get clogged, water backs up into the unit, and leakage ensues. He shot the pipe with compressed air to force the blockage out and voila, problem solved! But this time, David wouldn't accept payment, resisting even several attempts to write a check. "We should have cleared that pipe last time we were here," he told us. Consider us won over. read more

If you are unsure of what company to use in San Marcos for repair work, or install work - stop, you've found the best one! My husband I were in dire need of replacing our 20 year old heat pump. After getting a few bids, We chose Marvin's based on the following: Professionalism Quote was well prepared and accurate High Ratings & Word of mouth among friends Replacing a huge item such as a heat pump can be stressful, however once we decided to hire Marvin's it was smooth sailing! We had our quote prepared, equipment was ordered, and the day of install they were on time and got straight to work. David (the owner) is so knowledgeable and kind. He answered every single question I could come up with, and showed me to how use everything. He even showed me on our old unit all the mold and rust on it and went into detail of how this was causing some of the problems we were previously experiencing. To make it even better, David puts together a folder for you that has all your information, and best of all, he has your rebate application paperwork for the city ready to go for you! Working with Marvin's was a blessing and we will be sure to use them from now on out, and tell our friends/ family to use them if they have heating and cooling needs. We are already saving on average $2+ dollars a day on electric usage with our new system and going from a home that was always 88 degrees even though the old thermostat said "78" to what 78 degrees actually feels like is like living in Antarctica! To Sum up - Marvin's will do a stellar job, charge you fairly, and treat you kindly. read more

As a commercial property owner I have 25 ac units that are always breaking down. My tenants expect quick service. David the owner is always dependable polite and professional. I have tried a lot of AC people over the years and right now I think he's the best one out there. read more

Came home Friday to a broiing, hot house. Called Marvin's at 4; they arrived at 4:15; and by 4:45, the vents were blowing cool air! The repairmen were courteous & professional. And to top it all off, the bill was reasonable! read more

Great guys. Had a condenser leak that was problematic. They came three times and installed a pump at no charge. In fact, I can't see how they made money the were so inexpensive and on there busy time of year read more

Quick response, reasonable price, courteous, knowledgeable ... Look no further for HVAC service. As long as they are in business, I will use no one else. I recommend them without reservation. read more

We had something leaking from the attic into our bedroom. They were prompt in coming out for which we were appreciative. It was wet outside and the guys tracked in mud on their shoes. Didn't seem to bother them. We were told that we had a clogged pipe which they ran hot water through and was "fixed" and they left. After a few hours the problem had become worse so I gave them a call and they came right back out. This time they said the drain pan needed to be replaced. What bothered me is that when I asked how they mopped up the water in the attic during the course of replacing the pan, they said they mopped it up with a piece of insulation and then that was thrown somewhere up in the corner of the attic. Why? Also, without asking, they used a small decorative pail from my laundry room. I only knew this because upon leaving I happened to see them put it back on top of the cabinet it had been on. When I pulled it down, it was dirty and wet. This is frustrating to me as I don't want repair companies in my home having a blase attitude. My main suggestion to this company is that they give more attention to detail and be more mindful of their actions. read more

Look no further than Marvin's. After carefully researching a/c's and service providers, two things stood out: a) the service provider is more important than the brand, and b) Marvin's customers are customers for life. David's quotes were reasonably priced and detailed, he gave several good options, and he explained them. He and his folks came when they said they would, stuck with the original price, worked quickly and efficiently, and followed up on the installation to be sure it was right. David helped us with an extended warranty on labor and replaced a wire from the thermostat to the outside condenser at no charge. As a homeowner, finding Marvin's Heating and A/C gives me peace of mind and assurance that the "A Team" is there to help if/when I need them. read more

Called Marvin's late in the week about a month ago to access our need for a new ac unit. I had already had a very non-Reliable Air company come out to look. They tried to up sell a ac unit and, as a result, tendered an unbelievable service estimate. Marvin's guy's were able to squeeze us in late that very night. They sold us a nice York unit at a reasonable price. They were able to install it the next day!! They were professional and hard working. Will definitely use them again. They are also so trusting. Just received the bill, exactly what they said, yesterday. read more