We have used their service in the 249 area of Houston in order to improve our cooling during the Houston hot summer months. Their technicians have helped us keep our unit working well. It was one of Ruben's team members that came over and recommended the proper protocol in order to have the most efficient HVAc. read more

I had Ruben (a guy with knee problem and a limp) come over to check a condo HVAC. He suggested a takedown of the entire system from the ceiling to determine if there was a Freon leak (found none, but charged me $500 without a receipt). He then proceeded to the roof (where the compressor is) and determined that the capacitor is bad (changed). He also said that there is a leak, as the Freon was empty. We had set the next day for his next visit to fill the system with Freon and add a dye (a leak detector), but did not show up after multiple calls. Got a different company for a recheck. The Freon was full, and there was a fuse removal/disconnect (in the control box next to the compressor) that was obviously done by Ruben (no one touched the system since the original installation). And guess what: the system fired up once the fuse was connected, and started cooling like a charm. In summary: Ruben obviously tampered with the power supply to make it look as if the system was dead. There was no need for take down of the coil cover to check for leaks, there was no leak, and the Freon was full. The guy is a liar and a fraud. Don't let him get close to your house. If there was an option for negative stars, I would give him - minus 10. read more

Have a regular guy. Great guy. But he was getting to the point of "I've kept your 17yo American Standard (Trane) running long enough and it's getting time for you to buy another $$$$$ AC system." I didn't want to buy another $$$$$ AC system - at least not yet. Ruben from CES came out, sized up the AC, potential issues, offered alternative fixes, offered a competitively priced new AC if I wanted to go that route., spent an hour and change sitting down and going through all the options. Eventually settled on what we hope will be a fix - at a very, very reasonable cost - that lasts through the summer so I have time to chew on a new system install next spring. I very much appreciate Ruben's time, effort, flexibility, and willingness to work around and with what I need right now. Great guy. Highly recommend! read more

Ruben and his crew at Complete Efficiency Systems were fantastic. They spent the whole day working on my AC--installed a new coil, replaced two damper motors, and even custom-built a new plenum. I got several quotes before deciding, and these guys had the best price and clearly knew what they were doing. The job turned out to be way more complicated than expected, but Ruben stuck to his original quote, which I really respect. Everything's working great now, and I'd definitely call them again. read more

Ruben and his team did a great job with the HVAC issues at my house. They come with a ton of experience, are super friendly and communicative. They clearly go above and beyond to do expert work. It's hard to find a true expert with good business ethics in this field so I feel grateful to have Ruben and his team. I'd recommend them to any other homeowners with hvac issues. read more

I've been working with Ruben for over a year now. We had a big humidity problem and temperature differences between floors. He set up my 50 year old two story home with new more insulated ducts and a zoned system. Our house is much more comfortable now. The owner, Ruben, is honest, hard working and offers a great value. His crew members, Daniel and Oscar, came out today and quickly fixed the poor air pressure in my baby's room and also made adjustments I wasn't aware of needing, all covered under warranty. read more

Ruben and his crew at Complete Efficiency Systems were fantastic. He scheduled replaced my existing unit with a brand new HVAC system in a day. He was very responsive and professional. read more

I have always found that the best way to deal with a problem is to find someone who knows what they are doing and let them do it. These folks clearly know what they are doing. I recently had called another (big name national) company because my AC system in my Houston home wasn't cooling properly. I was told that the 10-year-old system needed to be replaced at a 5-figure cost ("We don't fix systems this old"). I called "Complete Efficiency Systems" after finding them on Yelp and seeing the high rating. They were here within hours, diagnosed the problem, and fixed the system for about $500, or less than 1/20th of the other guys estimate. And I prefer dealing with a small local firm rather than an anonymous national behemoth. I will call them for the next problem, and will probably let them replace the unit when it becomes unavoidable (hopefully several years from now). Two thumbs up from me. read more

Not very responsive. They inspected our A/C a month ago with good condition comments. But it's not working for some reason and call them to come check again but didn't showed up as they said they would not respond my messages. Been waiting on them for 3 days before calling someone else. Disappointed. read more

Thx Rueben. Great job. Efficient and reliable. Will definitely recommend to others!!!!

I called and explained what was going on with my AC unit. Ruben sent a technician to my house within an hour. The tech, Brandon, assessed the unit and told me the blower motor needed replacing. He worked diligently to remove the old motor and put in the new one. Brandon's customer service and manners are impeccable. My AC unit is an older model, but unlike most HVAC repair companies, Ruben didn't start with the "you need a new unit" yada yada. I have confidence that they only fix what is broken. I will DEFINITELY be using this service in the future. Highly recommend Complete Efficiency System. Thanks Brandon and Ruben for getting my old school Goodman up and running!!!! read more

Ruben was very responsive, did amazing work, and offered excellent pricing. He was friendly and easy to deal with. He also came back out at no charge to show me how my system worked even when there was no actual problem with my unit. From now on he will be by go to HVAC Technician. I would highly recommend read more

Ruben responded quickly to my request for service. He communicated well while we coordinated an appointment time. When h arrived, he took the time to explain my system to me and point out a few things that could be changed without being pushy and trying to sell me on things. After a thorough inspection, he determined that there were no issues with my system and that I was good to go without any repairs. Thank you for the great service on short notice! read more

If I could give this pathetic poor excuse of a human a zero star I would . Ruben not only had day labor workers which he might have found at Home Depot that looked like they had NO experience but skinny enough to fit in my attic. To totally botched my air conditioning unit . He suckered his way in by acting like he was doing paid service for the low price gimmick. Sold us a unit that was way too small for our house. Then didn't properly install the unit! The unit was propped up on a piece of wood. Which eventually leaked and damaged my ceiling and cause mold . Asked him to come and see if he could fix the mess HE created installing the unit. He wanted an outrages amount of money!! To fix what he did!! He's a ball face liar ! Oh while we paid him good money to do a good job, he was worried about an old beer can he found in my attic! Didn't ask if he could have the beer can and just took it !! Still working on taking him to small claims court. read more

I had to have my downstairs AC unit replaced. Great price, excellent service. Honest & good explanation of job & time required.

I was gathering multiple quotes for a new coil at a reasonable cost. I had received several quotes before ultimately deciding to go with Complete Efficiency System. Ruben was very prompt and knowledgeable when discussing my install options. I eventually decided to replace my coil and condenser. CES was able to offer a financing option that ultimately lead to my choice in the complete system. Ruben discussed the financing option and set expectations for the entire process. The financing plan allowed me to take advantage of absorbing the cost over time. I can not thank CES enough for their professionalism and courtesy during my experience. The install went smoothly and everything was executed in a timely manner. I will be a repeat customer and advocate for CES in the future. read more

Complete Efficiency Systems - Heating & Air Conditioning/HVAC Near Me - Houston, Texas

The work these guys did is top notch. The team was respectful, efficient, and hard working. They even tried to avoid making a mess, laid down cloth for high traffic areas, and wore boot covers. The new air ducts have a lot of support, are elevated as they should be, and they diligently made sure that the air handler had no leaks. I called on a Tuesday to get a quote for some pretty extensive work. Ruben came the next day, and we managed to schedule for that Friday. Ruben probably would have made it happen even sooner, but the scheduling bottleneck was me. My only complaint is that my wife can turn the house into an ice box now if she wants. Good thing the whole system runs more efficiently now! read more

Ruben replaced my HVAC in July 2024. He is very responsive and punctual. He is also very knowledgeable and seems genuine. He quickly diagnosed the problem with my old unit and was able to replace the condenser and air handler the following day, once we determined the old unit could not be repaired. He and his team are extremely hard working. The elevator in my building was not working at the time so he and his guys had to carry the units up 5 flights of stairs in the heat (my condenser is on the roof of the building). They never complained. He installed quality units (Trane) and took the time to help me register the units to get 10 year warranty. He also took the time to help me set up the new Honeywell thermostat with WiFi. I'm very satisfied with the service and will definitely use him again in the future. read more

I have used Complete Efficiency Systems (CES) for our heating and air conditioning service the past 2 years and will never use anyone else!! They are 6 star rated! CES is the most honest and reliable AC & Heat repair company we have ever used! They excel in diagnosing the problem and respond in a very short time day or night. This is who to call when you need help! Ask for the owner, Ruben. Stephen A, Katy, Texas read more

My property had had multiple issues with the AC/heating unit. After calling, a technician was sent to my property within an hour. This was super important because a freeze front was coming over Houston, and I was desperate to keep the heat on and prevent additional issues such as burst pipes. The tech assessed the unit and told me the first-floor damper motor needed replacing. The service was great as the tech worked diligently to remove the old motor and put in the new one. The tech also ensured the heating unit was operating properly and waited multiple cycles to ensure no additional issues would arise. I highly recommend be using Complete Efficiency System this service in the future! read more

We set an appointment and he didn't make it. He didn't communicate with us that he could not make it either.

I rarely ever write reviews but I really want to share and acknowledge Ruben and his crew for the quality work they've done for my place. I had my condenser unit and evaporator coil switched out at extremely fair price (had 7 estimates in total) and they were able to get the job done in such short notice. Ruben accurately diagnosed the issue himself even when I told him what the issue was based on what other companies told me, and he gave me couple of options on how I can resolve the issue. He doesn't try to sell you any products or up charge you but rather educate you on what the issue is and compare the pros and cons with you so that you can make the best decision for yourself. Ruben and his team are hands down the most honest, hard working individuals I have ever met. Ruben is extremely reliable and responsible individual who puts his name behind his company and all the work that they take on. Moving forward, I will only go to Ruben and CES for all my HVAC needs. read more

Reuben is only interested in fixing what is broke. He is honest and explains things very well. He does not up sale.

I started having AC issues on a Sunday afternoon, in July. I placed a phone call @5:30PM, expecting to get an answering service, and promises that someone might respond in a day or two. Instead, I got Ruben, who said he was on a call, but that he could head my way shortly. About 2 hours later, he arrived, and got my AC to "limp along" until Monday morning, when he could return and completely address the real issue. Monday morning, he shows up, and completes the job (at a reasonable price). This was a much better overall experience than what I have had with the large (plumbing/HVAC) service companies in the area. A small business, that seems to understand customer service, and take pride in their work! I hope that I don't need their services any time soon, but if I do, I know who I'm calling! read more

My AC went out around 5PM on a Friday, (cinco de Mayo day) and the first hot day before summer hits. I randomly looked up this place bc it's close to my house and Rueben answered within the first call. He came out within 40 mins (would have been sooner if I didn't catch him already leaving the shop). He was professional, did his diagnoses, explained what is needed and cost. No pressure like some sales people are. After replacing a capacitor, checking lines, going up and down the attic and outside multiple times, added Freon and a sealant. He was done in about an hr and 15 mins. He probably would have been done sooner if he didn't chat with us bc of our many questions. I highly recommend, have his number saved to refer him to others or for my future uses. read more

On a very hot Saturday night in August we realized there was a leak coming through the ceiling of our young son's room. A quick look in the attic identified the AC as the source. My husband called Complete Efficiency and within an hour Ruben arrived to take a look (around 10pm). He was very courteous and knowledgeable and after taking a look identified the problem. He also took photos inside the ceiling of the problem to help us better understand what was going on. Ruben returned the next day with a colleague to fix the issue and we were back up in running in under an hour, despite the scorching hot temperatures in our attic. We have an older unit, so ended up signing up for Complete Efficiency's Preventative Maintenance program, which we think will definitely extend the overall life of our (until now!) somewhat neglected unit. Overall we were very happy with our experience and would recommend Complete Efficiency. read more

Highly recommended. I deal with multiple HVAC issues each year and am usually replacing systems at rental properties every few years. This review is for my own home and it was great to get honest service that I felt was good value and timely despite being in the peak busy season for them. We got two systems installed and fully functioning in one day, not only thy but they came back out a few days later to make sure they were functioning properly - which they were. If you want fast, reliable, professional service at a good cost/value, definitely let them do the work. read more

Ruben responded to my quote quickly with hour availability, and his number, and when I called he coordinated the arrangement very quickly efficiently and I understood exactly what I was getting myself into beforehand. When he arrived, he's great very personable, friendly and came with all his tools, equipment and company car neatly organized and mask in tow. He has packages and programs and it appears he takes great care of his clients so I for sure will be working with him in the near future. read more

Ruben and his team are extremely hard working, reliable, honest workers. Our AC system was blowing hot air and needed a part and overall maintenance, I called Ruben in the late night and he and his team came out with the required part for our system the very next day!!!, which by the way others said the part was no where to be found in Houston.... We highly recommend Ruben! He communicates well, is patient, doesn't try to push services or parts you don't require for your system to function efficiently. Thanks to YELP, I found our new AC service provider!!! If you want a company that takes pride in their work and respects their customers, call Ruben!! read more

When my AC broke down on a Sunday morning, I soon realized that's a day when most AC repair companies are closed. Ruben came out and had the house cooling (on what turned out to be a 100-degree day) within hours. Very responsive and communicative -- he let me know when he was on the way and when he had picked up the necessary parts, and he walked me through the options for repairs. In a city where the heat can become unbearable so quickly without a working AC, the speed and reliability were invaluable -- especially considering it's the industry's busy season right now. read more

The job was completed, and we very satisfied with the outcome. Ruben and his team came in and out , we are enjoying the clean cool air. Great job read more

I've been using Ruben these last several years and I've always been satisfied with the honestly and quality of work Ruben and his team provides. He installed a brand new unit in my newly built garage apartment in 2022 and took his time to explain the whole process and helped me select the right unit for the apartment. I've since used Ruben on last minute notices and Ruben is always very responsive and was able to fit me in his busy to help out any way he can. Last year 2023 my outside unit went out and I called Ruben and he came out and replaced the capacitor and got me going the same day. He's also come out to do inspections on both the main house and garage apartment prior to the heat wave we had last summer 2023 to verify everything was working properly. Fast forward to 2024, my existing unit on the main house of my property finally went out. It was 20 plus years old so it was time for a replacement. I called Ruben because my A/C stopped working. And like always, Ruben came out again and fit me into his busy schedule and performed a thorough check out of my existing unit that very same day. We discussed a replacement and Ruben had a team ready the very next day. Again, Ruben provided me with the best affordable options for replacement. The next day Ruben had his team come to my house and replaced my entire unit in one day. I am so pleased with Ruben's expertise and quality of work along with his team. They were very professional and even cleaned up and swept the floors when they were done. I would definitely recommend anyone to Ruben for A/C repairs/replacement/inspections. He is very professional and affordable. I can't say enough about Ruben and his team! I am very happy to have found him and will continue to use him on all my future A/C repairs/inspections. Thank You Ruben!!! read more

My AC went out on a Saturday afternoon. These guys were here 30 minutes after I called. They got me back up and running quickly, but what I appreciate most is that they didn't just automatically try to sell me a new unit. They actually diagnosed and repaired what I had. Later, it turned out I had a leak in my condenser so I did get a replacement. They got the job done quickly and they did a thorough job, and the cost was absolutely reasonable. They are very courteous and professional. My specialist was Ruben Tellez and I give him my highest recommendation. Great experience and no hassles! read more

Ruben was quick to respond, set my expectations on the front end and exceeded those expectations. He called to let me know he could come earlier than planned, walked me through his findings (even showed me everything he was looking at), fixed our A/C issue at an extremely reasonable price without selling me something I didn't need. He did, however, advise on steps he'd take next, provided a rough estimate of what it would cost and the benefits it would provide. I'll be using him again soon! read more

For me, transparency and Integrity are major factors when I hire a company to work on my home. Complete Efficiency Systems is a real winner. Our A/C stopped cooling and we had two different companies diagnose it, each telling us we needed to replace it. I received several estimates and decided to meet with 2 companies. Ruben from CES was not only the most responsive and accessible, he was the only one that was willing to exhaustively explore and explain all of my options all of my ideas,questions, and options for the system. He was confident and professional, giving honest opinions regardless of how it affected the total price. At no time did I ever felt like he was trying to "Sell" me, but rather that he genuinely wanted to help arrive at a solution that was truly the best for me. In the end, he diagnosed the problem and determined that it was indeed a leak of refrigerant, but rather than replacing the coil and condenser, that we owned a commercial unit (never mentioned by the other guys who were quoting me $18K-$24K for a new 5 ton system) and that it was probably wiser to fix the Freon leak and see how long that will hold us. He even recommended our next steps if it failed again. Still, it impressed me that he had the integrity to tell me about the unique quality and condition of the existing Commercial grade system instead of doubling down on the notion that it was just another failed residential A/C unit, and skating to an easy sale, He walked back his very competitive 5 figure "Replace the System" price to a less than $1K "fix & recharge" solution after his diagnosis. I now have found a trusted friend in the A/C business and he's a badass. The repair was quick, and Ruben and his crew were always prompt and responsive. I really wish I could find more vendors like this. read more

If I only had one lifetime 6-Star award to give out, it would go to Reuben and CES. Reuben went above and beyond what any HVAC company has ever done for me. He always responded very promptly, even early Sunday morning and late on Sunday night. Reuben even went out of his to follow up with me and troubleshoot at no additional cost, and at fair prices to begin with. I hope I never need HVAC services again, but I can't wait to call CES when I do! Thanks Reuben!! read more

These guys are the real deal. Hands down the best AC tech I've worked with in Houston and I'd gladly recommend to a friend without hesitation. Came out on a Friday afternoon to do diagnostics and provided multiple options rather than forcing a one size fits all solution down your throat. The work was thorough and they were able to explain everything being installed in great detail. I don't write these reviews often, but can guarantee you're going to get some high quality work from these guys that you can trust. read more

Rueben was fantastic from the initial message back on Yelp, to showing up on time, and especially solving my AC problem quickly and transparently. I would highly recommend this company to help solve your AC issues read more

Amazing service. On-time and Ruben pays attention to details and is a step above. He even changed my batteries to my smoke detectors (at my request - I had the batteries and he had a ladder to reach them) !! Great service and highly recommend. read more

Our a/c went out in the middle of June and it was 80+ inside our house and around 100 outside when I called Ruben. He told me he would get here right away and was here within ~2 hours. Very knowledgable. Was very knowledgable and thorough. Gave us a great price for a diagnostic. It ended up being an electrical issue which he was able to identify after checking the system and explained how to fix it and he was exactly right. Ended up following up and calling the next day to make sure everything was running well. Great guy and amazing business. Would undoubtedly call again if I have any issues. read more