HVAC reviews in El Cajon, California

Joshua from Mauzy Plumbing came in to fix our plumbing issue. He was very detailed explaining the repair and cost associated with repairs. He did an excellent job with fixing the issue and checking everything and cleaning after him self. I really appreciated his professionalism and attention to detail. Although the service is not cheap, knowing that everything is done properly is very comforting. I would recommend him and his services to anyone who is looking for reliable plumbing experience.

David was on time, clean uniform and very professional in every way. He was prepared for the task and fully understood the testing on our homes electric system. David went above and beyond and did a great job. Highly recommend him.
Davis is an asset to Mauzy’s service/troubleshooting.
Well done David.

Excellent work from John Allen and Wayne will definitely do business again and I also will send referrals

We had an outlet issue that David from Mauzy helped us with. He was very professional, explained our options and assisted us with providing information on how Mauzy can also assist with Plumbing, AC, AND HEATING. I thought they were just an electric company! We appreciate all your help David.

What a pleasure to have my AC service performed by Darren. I highly recommend Darren Murphy for AC maintenance. Darren was very personable, professional, and knowledgeable. He took the time to explain the maintenance process, checked all components, and ensured that my unit could run more sufficiently if the AC system were cleaned. Exceptional service by Darren!

After being notified by Mauzy of a slight change in time, Nathan was able to keep the original time which was great. Nathan was extremely professional and thorough. He made sure all my questions were answered and reassured the company's commitment to availability and quality service.

Isaac was great. He inspected our house and explained all the issues and options for fixes and upgrades. He also stayed late to install a car charger we had sitting around for awhile. He has great workmanship and prides himself on doing a quality job. He worked with us to lower the price by checking with his higher ups. The final price still seemed a little high but went with it just because of Isaac’s character and his ability to get the job done right there. Definitely recommend Isaac.

Mr. Anderson was a consummate professional.
He is affable, knowledgeable and courteous.
He diligently took care to respect our home.
He went the extra mile in checking our system and expertly explained all that was necessary to restore it to full operationality. He explained all the repair options without any hint of hard sell.

Tim and Chris did an install of a mini split and they were super friendly and professional. They completed the install earlier than I thought. The whole process from starting with the call the schedule the diagnostic call to getting the replacement was super fast and simple. Great work and we are very happy.

I had a great experience with the people I interacted with at Mauzy. The technician Juan was outstanding. He walked me through what needed to be done and was very knowledgeable and thorough. After the estimate came back from the company I am going to have to wait to have the job done and save more money.

David Vitrano was our service tech to do an electrical inspection of our house. He was very friendly and respectful. He was very thorough, and recommended that a senior electrician could do a deeper inspection of our specific problems. Our house is over a hundred years old, and in desperate need of upgrades.
Mauzy just completed a main line plumbing relining of the hundred year old cast iron pipe. It was a WAY cheaper fix than digging up the entire yard.
I highly recommend this company to anyone who wants reliable service, and not just the cheapest you can find.

I hired Mauzy to do some plumbing repairs. Matt did the estimate for my rental property. It was a lot of work and a lot of money. The plumber Frank who came the next day wanted to upsell me. He wanted to cut the wall open under the bathroom sink and rebuild the drain line, for $1300 more, but he could not give me a believable reason for the extra work. So I did not agree to the upcharge. Frank left the sink drain completely unconnected in a one bathroom house and told me the tenants could wash their hands in the kitchen sink. I yelled at him and told him to go back and reconnect it. Instead of reattaching the drain line that was there originally, he built something weird and deliberately did not connect it completely, so it would continue to leak. The next day I called Mauzy and eventually Matt called me. He made it clear that Mauzy would not honor their original quote, and the reasons he gave didn’t sound right. When I sent him pictures of what Frank installed, his reasons changed. It became clear to me that Matt was just BS-ing his way through the conversation to get me to agree to a $1300 upsell. I ended up hiring a different plumber to fix Mauzy’s work without cutting the wall open. He just snaked the drain and it worked just fine. It was a fraction of the cost. The upsell was unnecessary. Mauzy was unethical and unprofessional. Dave the customer service guy texted me repeatedly, but he was useless and just told me to call the office. Don’t hire Mauzy, especially for a rental property.

This Five Star review is only for Mauzy technician, Nathan Benge, who did the diagnostic on my Lenox combo system of heat pump and gas furnace on December 30, 2025.

I had a combo system of a heat pump and a furnace, Signature Collection, which were installed last year by Mauzy. For those of you don’t know much about Lennox models, Signature Collection is the top-of-the-line of the Lennox brand and yes, they are expensive and did have few issues right after the installation!

Last cold Sunday morning, 12/28/2025, my Lennox thermostat S40 stopped working. There was no power to the unit! I contacted Mauzy on Monday and got an appointment with a technician named Nathan Benge on Tuesday morning to visit my home and to diagnose the problem. I’d like to mention the following positive notes from the time the Nathan on the way to my home to the time the he finished the job:

1/ It’s very helpful to me receiving the status update when the Nathan was on the way and tracking information (including the estimate time of the arrival) of Nathan’s vehicle.

2/ After listening to me about the past and current problems of the installed Lenox unit, Nathan verified no power to the Lenox thermostat S40. He, then, went up into the attic of my home, unplugged the unit main power cord from the outlet, and started checking on the connection of the electrical wires inside the unit. He found one of the wires being loosen from the undersized winged wire connectors (past workmanship?). Nathan reconnected the wires with a larger size winged wire connector (see the attached photo with red arrows) and plugged the unit main power cord back to the outlet. The unit was powered on and the thermostat S-40 was also back on!

3/ At my request, Nathan also did the following works:

(a) Re-checked the internal wiring to the circuit board in the blower unit (there were 4 exposed stripped copper wires at the connection to the board). He confirmed they’re O.K.

(b) Did a visual check on the flame in the furnace.

(c) Found a temporary solution to reduce the vibration noise from the heat pump by using the electrical wire jacket to separate the plastic component from the metal frame of the heat pump (see the attached photo with red circles).

(d) Researched and explained the message “Ambient Lockout”, which showed under the “Status” tab of the Lennox app. He explained how the heat pump and the furnace operate when the “Ambient Lockout” message showing up in the app. Noted that I had asked the same questions to previous 5 Mauzy technicians, managers, local Lennox sale representative, and calling Lennox Customer Support. No one was able to answer or explain to me the meaning of the message “Ambient Lockout”! Even worse, all I got back from Lennox Customer Support were two case numbers and no follow-up from Lennox Technical Support. I was also told last March (2025) that Lennox Technician covering southern California region (from Bakersfield to the border) would visit my home, checked out the installed unit, and addressed some of the issues that I had with this top-of-the-line Signature Collection unit, but they’ve never came!

In conclusion, Nathan Benge did a great job!

I had a delivery and install of a dishwasher go bad. The technician broke one of my water connectors. They abruptly stop and told me to call a plumber. Prior to their arrival there was no water issues. I called Mauzy. They were wonderful!! The first technician i saw assessed the issue and determined what needed be done but he didn't have the parts and was set to come the next day. He got sick. Mauzy reached out to me. I spoke with Jay. I really needed my water back on. She was wonderful and said she would do her best to get someone else out to me. It was about 1 1/2 hours later and Mauzy was at my door. John and Andre went right to work. John had all the parts. I decided to replace all my water connectors under my kitchen sink. They were great they worked well to together. They explained all that they were doing during the job. They had my water back on quickly. So professional and very friendly. I would not hesitate to use their services again and would recommend them to my friends. Thank you!! Your made my life so much easier today !!

I had a good experience with Mauzy. They installed an interlock breaker device to my electrical panel and a 240v 30 amp Inlet for my portable backup generator in case my electricity goes out and by having this setup, I'll be able to use it for emergency purposes. It was a fair price and they did it in a timely manner and the technicians were very professional with positive attitudes
The technicians that I recommend is Isaac and David for this job/setup. I attached 3 photos of my setup and I was able to do all this on 18 month No, interest payment plan... Muazy & Isaac & David thank you so much 😃👍

Pastor took his Big rig there, they do great work, but they have to know you to work on your truck, but you bring them equipment, and they will fix you right up, tell them I sent you

so far with non export I've been ripped off. 5 month's since installation and not active. do your research.

Great business. Go to them for your HVAC service / repair

My AC was blowing hot air which made no sense at all. I dialed them and they diagnosed the problem immediately. They quickly mended it and did not overcharge me. It was blowing cold now, and going on like a charm.

I was in need of a wall heater replacement, and they did a great job. The technician was easy to deal with and had a productive work. The new heater works much better and heats the room quickly. I’m very pleased with the service provided.

Middle of the night, the AC quit, and they still showed up fast and ready. Fixed it right away with zero hassle. Lifesavers! Couldn’t be more grateful.