A-1 Tops Services 8950 Westpark Drive, Houston, TX 77063

"Gregg showed up as expected despite his van breaking down the evening before. He was both knowledgeable and patient as he took his time to diagnose a handful of issues in our geothermal system that were improperly repaired by the previous service company. Always a pleasure to meet someone so honest and willing to spend their time and share their experience to get the job done."

"Greg and his team replaced a 20+ year old complete system with an astonishingly energy efficient 2 stage system. The house is now much more comfortable and the electric bill is quite a bit lower than it was despite the heat we are enduring. When your hvac system needs repair or replacement call Greg. You won't be disappointed."

"I’M SO HAPPY I FOUND GREG BERENS! Finally a honest, knowledgeable & NO hard-selling or unnecessary upselling, like most of them! He is prompt, trustworthy & reasonable. I’ve looked years for someone like him! He repaired one AC as it was not working and also did maintenance as they needed a thorough cleaning. I’ll continue to use Greg on any future AC needs! FIVE STAR!!!!!"

"I’ve been using A-1Tops; Gregg Berens for right at 17 years now. I used him the first year in my home as I was covered by a first year home insurance protection company. It was just by fate. They did a great job, so after the warranty expired, I called them again the next time. A-1Tops gained my trust over the years by making small repairs to my older HVAC systems instead of just wanting to replace my units; a rarity these days. When I wanted to replace my downstairs unit with a High Effecient unit, he did that too. Gave me a great price with top notch work. This is a guy I trust to give me honest hard work. I am on his annual maintenance program and I am confident it is a direct reason my units have lasted so long."

"I had a large air-conditioning company come out when I had a control board issue which stopped my dampers from working on the half story upstairs. Instead of recommending me replace the circuit board which they apparently didn't know how to do, they recommended that I remove the dampers and let the entire system run all the time. Well consequently in the summer time the upstairs never cooled down when the unit shut off for the bottom floor. This went on for a few year and I finally called Greg out to look at my system. Greg was the first tech that ever ran a pressure test on my system and when he did the pressures were super low due to poorly installed duct work and over sized returns installed by the home builder. Greg gave me a quote to repair these items including rezoning my system and when the work was completed my system has never run so well even when the home was new."