Marvin's Heating & Air Conditioning

Marvin's Heating & Air Conditioning runs as an HVAC contractor based at 102 Manor Park Rd in San Marcos, Texas. David Harrell serves as owner and handles air conditioning installation, repair, and maintenance along with heating services for both residential and commercial customers. The company operates as an authorized York dealer and covers San Marcos plus nearby spots including New Braunfels, Canyon Lake, Fischer, Kyle, Wimberley, Martindale, and Buda.

Customers describe jobs such as quick AC fixes during summer heat where David and Dylan replaced parts in under an hour after warranty delays, new furnace placements that left gaps in ductwork and debris behind on one rental property, routine annual maintenance calls handled on time, and full system replacements on older units with York models. Other accounts cover capacitor repairs on hot days, biannual service through a Comfort Club, and emergency responses that restored cooling or heating without added sales pressure.

Reviewers note fast call returns, arrivals within an hour on short notice or same day, fair pricing without extra charges, and clear updates on any delays. The company handles weekend and emergency visits, maintains steady communication, and focuses on the listed service towns with crews that finish work and remove materials.

The business shows a Google rating of 4.8 from zero reviews there while customer accounts spanning decades stress recurring points of reliability, honesty, and prompt handling of repairs and maintenance.

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“We had these guys come to our rental property. I rarely leave negative reviews, but these guys really earned it. Their work was extremely sloppy; they left all their trash behind and demonstrated an apparent inability to properly fit the new furnace into the pre-existing ductwork. They left significant gaps between the furnace and the air ducts, allowing heat to escape into the attic. This will undoubtedly impact the utility bills. I am surprised by all the five-star reviews, as our experience was far from satisfactory. We mentioned the problems, and they came out a second time, with little change in work ethic, completed work, or trash picked up. I’ve heard from older clients and residents in San Marcos that Marvin, the original owner of this business, was very skilled at his job. It seems that things have changed over time, because in our experience, that is no longer the case.”

“After years of frustrating HVAC service calls sadly lacking in integrity with misleading diagnoses, poor knowledge, sloppy work, and fear mongering sales pitches, it is so uplifting to report on a HVAC company that has restored my belief in the existence of Integrity… I have been using Marvin’s Heating and Air Conditioning Co for the past three years and have experienced a company that serves the industry with strong work ethics, knowledge, and effective customer communication. David Harrell, the owner, has provided the routine annual maintenance and service calls on a timely basis. When my AC went out one summer in August heat, he was here and had the part replaced in a matter of several hours for a very reasonable cost and clear explanation. When the time came for me to consider replacement of my HVAC system, David presented me with multiple options, including the choice of delaying replacement for a while longer. He educated me on different systems (without high pressure sales or fear mongering pitches) and reassured me he was available to answer any questions I had as I researched my options. True to his word, he answered numerous emails/questions with knowledge and patience. ”

“I have used Marvin's A/C for several years now. I have found this company to be a reliable A/C company with fair pricing. I have also been impressed with their responsiveness in returning phone calls or contacting me when they are delayed in arriving at my home. In the past I have had A/C service people that would say they are going show up and then do not show up or do not let me know they are going t arrive late. I really appreciate the service that Marvin's A/C has provided and I highly recommend them for A/C Service and Repair.”

“David and Dylan were great. They fixed my AC in probably less than an hour—after I spent a month battling with my home warranty company to get it repaired to no avail. The price was fair, and the service was efficient and effective. I was able to get an appointment quickly, and everyone I interacted with was pleasant and helpful. I’d highly recommend.”

“I have been a customer of Marvin’s for more than 30 years and have always had great service. One memory I have is of meeting David at my home during my conference period from SMHS and him fixing my heating on the spot. Always timely, prompt in emergencies, great that I have been able to rely on him for so many years.”

“I was having trouble finding an HVAC company familiar with my 2 York systems. A local wholesaler referred David Harrell with Marvin’s Heating & Air. David responded quickly and the work happened at the time promised. He is knowledgeable and understands the importance of resolving HVAC issues quickly. I’m now enrolled in his Comfort Club that offers biannual maintenance and peace of mind at an affordable rate. I highly recommend this company.”

“Fast, Friendly, Professional service. David Harrell and Marvin's did an outstanding job for us, including excellent follow-up concerning a company rebate. I very strongly recommend Marvin's Heating and Air Conditioning.”

“Marvin's Heating and Air Conditioning is a 5 star company! We have been their loyal customers for over 25 years. They are professional, knowledgeable, and trustworthy. Reasonable in their pricing and not having to worry who to call when your heat or air is out is a relief!!”

“My home was built in 1996...Marvin's Heating & A/C was the contractor that installed the heating & A/C unit. We have used Marvin's ever since for check-ups and any maintenance required. Also, after approx. 20 years the original unit needed replacement. Marvin's installed a new York unit which is rated very high. I highly recommend Marvin's for all your heating and A/C requirements!”

“David and his crew are extremely professional and stand behind their work. Marvin's Heating & Air Conditional will always get the first call when I need to replace our multiple systems.”

“I have been a highly satisfied customer of Marvin's Heating & Air for over 30 years, beginning with Marvin Knight, David Harrell's grandfather. I have received prompt high quality service during the entire 30 years. I rate Marvin's FIVE STAR. Andrew Gary”

“Prompt, courteous, efficient, effective! My AC was out for several days, but the day after I contacted Marvin's, the new unit was installed and operating. They arrived on time, worked efficiently, and cleaned up when they were done. I could not be more satisfied.”

“I called and asked for next day appt and they were available and very prompt. The two men immediately got to work and solved my issue. Honest and hard working. Please use this crew. I'll never call another crew for my HVAC needs. Thank you for your hard work guys.”

“Called about a A\C unit not working on a rental property. David was able to squeeze my job in between 2 other appointments and was there within an hour!!! After 15 minutes of testing everything he find the problem and changed out the part. Very fair price and amazing service.”

“We lost AC during one of the hottest days in June. Marvin's Heating and Air Condition service reps came to our house and found a faulty capacitor in the fan. They fixed it for a very reasonable price and left us very happy customers.”

“David and his staff are excellent. They come on time and help us with prevention as well as repair when needed. They are honest, offer fair pricing, and are willing to answer questions. They are the best!”

“Excellent service. Great product. Very responsive to any questions or concerns.”

“Great family owned company to do business with! Friendly staff and professional work. Will definitely recommend them to friends and family.”

“Came out on a Sat morning, fixed the problem, didn't charge an arm and leg, didn't do unnecessary work, very professional.”

“Highly recommend this company, trustworthy, honest, and timely.”