This company is exceptional and I can't recommend them enough. I sell real estate in the San Gabriel Valley and have experience with many, many HVAC companies through housing inspections for buyers to repairs and new installations for clients of mine and Comfort Zone is far superior. I had them come out to my own house a few years ago and they were exceptional. I had braced for them to tell me I needed a new unit, and at more than 25+ years old that wouldn't have surprised me. But, they didn't. They serviced the unit and it worked great for another 3 years. This year, at the peak of summer heat, of course, the old AC unit that came with the house we bought died. I brought them out for a quote to remove the existing asbestos ducting and replace everything with new equipment. They just finished and I am thrilled with the experience from beginning to end - and I'm not just saying that because I finally have cool air blowing! Here's why I will recommend them to my neighbors and my clients: * They showed up on time and had the written bid to me when promised. This may seem like a small thing, but my experience is when contractors don't show up on time to get the job, you can expect a lot more of that once you sign a contract with them. * Their bid was very detailed and was sent with their insurance and bonding information. I usually would go looking for this information before hiring a company, but they proactively sent it with the bid. * Their bid assumed and included pricing for permitting the job. This is a big one. If a contractor tries to convince you to do the job without a permit then walk the other way. Now, you may choose not to get a permit, but you want a contractor who isn't afraid of and is familiar with the permitting process all the same. * Their office staff is exceptional. They were always two steps ahead of me and would proactively send me information about phases in the project like coordinating the asbestos removal (a different company). They also emailed to let me know the permit was pulled. I never had questions about what was happening next as they would email with the information before I even thought to ask. * Their pricing was right in line with what I was expecting. Frankly, even if they were higher than other bids, I still would've hired them because of all the reasons above. They also adjusted my final invoice (without me even asking or knowing it had to be adjusted!) because I didn't use the thermostat and the smoke/co2 detectors they had bid. I'm not sure I've experienced many times a contractor reduce my bill without even being asked. Because of all of the above I am fully confident if something happens to my new AC that Steve and his company will stand behind their work and fix the issue. I don't have a single negative thing to say about this company. read more

Comfort Zone exceeded my expectations installing my new HVAC system. After getting several quotes from other companies, I chose Comfort Zone because their pricing was fair, transparent, and very reasonable for the quality of equipment and work they provided. Ashley, the office manager, was excellent to work with. She handled communication and scheduling professionally and made the entire process smooth and easy from the very beginning. Steve, Jim, and Ray were outstanding. They were professional, knowledgeable, and clearly take pride in their work. They installed a Trane 5-ton condenser and cooling coil, addressed ducting issues in the attic, and made sure everything was installed correctly and operating efficiently. What really stood out was their attention to detail and communication throughout the entire process. Everything was handled professionally, and it's clear this team cares about doing the job right and taking care of their customers. Quality workmanship, fair pricing, and a team you can trust are hard to find these days, but Comfort Zone delivered on all three. I highly recommend them to anyone needing HVAC work. read more

On my speed dial list. Go to place for my heating and AC needs! To top it all off, they are reasonably priced!

I have been with comfort zone for over 15 years. All my yearly experiences with the office staff and the a/c techs has been great. They are very responsive to your needs. I highly recommend them to anyone looking for a reputable and trust worthy company. They feel like family. you Comfort Zone.... read more

Steve and Comfort Zone are the Best. Steve and his Company (Comfort Zone) Installed our Trane HVAC System in 2005 and never had a problem ! We have Steve Service our System Every Year. It is Worth the cost of a Service Contact. read more

Comfort Zone never disappoints. Extremely professional and wonderful technicians and staff! A few years ago, they installed my new system. I appreciate their follow up to schedule my annual service about a month in advance and their timeliness. Raymond provided excellent service. I will definitely use them again next year and recommend them. read more

Comfort Zone changed our lives! We love our ductless system! Our friends in South Pasadena recommended this business, and we could not be happier. Steve was super professional and walked us through the process the whole way. Thank you so much for improving our quality of life! read more

My heater stopped working. Called The Comfort Zone and they were out the same day to look at it. Technician Jim came and had this thing back running in no time. Quality service at its finest. Thanks to everyone at Comfort Zone. read more

I had an aircon problem and called a few companies but Comfort Zone resources right away. Steve, the owner came in and fixed my problem and charged me only $195. I think they're the best in the bush in my area. read more

My unit was not blowing cold during heat wave. They were here very promptly. Super great customer service. Would highly recommend. Nice office contact too! read more

Comfort Zone (CZ) was a referral from a co-worker and I decided to give them a try albeit I was a bit leery due to 23 reviews (not a whole lot). The scheduled appointment time was between 1:00 pm and 3:00 pm. They were able to make it earlier and arrived at 9:45 am. According to my wife, Jim from was "very very helpful." I estimate he was at our home approximately 45 minutes replacing a fuse, running the system for awhile testing it, and ensuring everything else was running. All in all, a very positive experience with CZ. read more

Great company, from start of scheduling an appointment to completion of job. Reasonable price. Very courteous. Liked them so much that I asked to be added to a maintenance contract. Thank you for checking my AC issue, one happy customer! read more

Steve is a smart, efficient technician. He came prepared with equipment, quickly diagnosed the issue, offered solid suggestions, explained everything clearly, and solved the problem same day. My A/C is strong and cold again. End result: the wifey is no longer complaining about the summer heat. Woohoo! read more

It's been about a month or so since Comfort Zone Inc has came to my house. I do just want to say that this company is definitely a 5 star company! Even though this company doesn't have many reviews I really have them a chance and they blew me away. Many HVAC Companies aren't as personable as Comfort Zone Inc. They don't come out and just try to sell you a new unit.Also not only are the field people amazing but the Office staff is amazing! Kudos to Kellina, and Ashley. I've spoke both them. Fantastic and I mean FANTASTIC Customer service. I will highly recommend this company to any friend and family. Thank you so much! read more

What can I say but amazing! Speechless! Incredible! Our furnace made a loud noise during the night, came to a grinding halt and wouldn't blow air any longer. We were prepared for the worst. Steve and Comfort Zone of Glendora were HIGHLY recommended to us by a good friend. It was easy getting an appointment, he showed up on time, immediately spotted the problem - the motor needed to be rebuilt. Work was completed the next day and the furnace runs beautifully. Doesnt charge a diagnostic fee, only labor and materials and the bill was right at his "guesstimate". I've already referred him to a neighbor and will have them back for an annual furnace and AC maintenance. read more

Comfort Zone guys were terrific. Feel like I won the lottery! They created a solution for the wind-tunnel noise on the new return that the Sears installer refused/denied there was a solution for. Sears guy kept saying - "you live in a condo there's nothing I can do." Comfort Zone opened up the wall, reframed the area, built a custom vent moving the return to the top of the wall where it's much quieter. No more wind tunnel. Very very happy. Comfort Zone even added sound dampening boards to the bottom of the other returns. I'm really sorry I didn't hire them for the whole job. I can't say enough good things. Hire Comfort Zone. read more

Thank you Comfort Zone! Ray is professional and personable. Excellent service, we appreciate you

Steve has been servicing our a/c and heating for a couple years now, and he came highly recommended from family and friends who have been his customers for years. All I can say is I would never consider anyone else. He is very thorough, explains his work, gives us simple tips for keeping our central air & heating running smoothly throughout the year, and does a great job. I doubt I will ever head into summer again without him servicing our unit. Also, Maria, who I assume is his office manager, is very courteous and helpful. Between the two of them, you feel like you're in pretty good hands. read more

Comfort Zone is awesome. Steve installed a new A/c unit and replaced all the duct work at our house years ago, so this review is a long time coming. We remodeled our house and originally had a "friend of a friend" install the A/C. He did a terrible job (even fell through the ceiling and refused to fix it). Needing someone to complete the job, we were referred to Comfort Zone. They were extremely professional from the start. They worked fast and did an awesome job. It's been years and we have never had a problem with our A/C. We ONLY recommend Comfort Zone for heating and air. My father owns multiple rentals and began using Steve and the Comfort Zone family several years ago as well. He is also pleased with them and would never use anyone else. read more

Somewhere along the lines an oil leak in the bearings in one the new swamp coolers was detected, Steve came out right away, ordered replacement bearings, installed them, and stood by his warranty like a real craftsman should. He took responsibility for the product he sold, and to me that seems like a very rare find these days. After 2019 ended, it turned out that Steve and his crew wound up not only doing an R&R (Remove and Replace) on my swamp coolers, but also added central air which entailed another R&R on the 50+ year old forced air unit. With the new air handler came an issue of high output air that my home was never designed for, and the system in my house never worked well getting the air out evenly to the entire home anyhow. So once more Steve & the guys helped me out adding an additional duct so air now flows evenly everywhere. Again, their work was outstanding, professional, not to mention if I had a question they were happy to answer it. (and being a tradesman of another craft I do tend to ask some technical and logical questions.) and just for clarification purposes, I use the word "Craftsman" to describe Steve and the guys as opposed to the word "contractor" because being a "Craftsman" is a much higher standard than just a "contractor" is. read more

I definitely recommend Comfort Zone to others. The guy by the name Steve came by and definitely he knows what is he doing and find out what's the problem with the AC. There's 2 guys who came the next day which I didn't get their names and fix the problem. Ashley the one at the office, thank you so much for giving me a quick appointment. I salute you all. read more

Would defiantly recommend!! I was referred to Comfort Zone by a family member that has been using them for years. I now will recommend them to anyone who has HVAC needs. Our AC went out on what felt like the hottest week of the year. Jim came out and serviced our AC unit. He was very professional. He also gave us several suggestions to improve the efficiency of our AC unit. Just a few hours and a reasonable bill later, we have AC again!! Thank you guys again! read more

We had 4" of insulation in our attic. Comfort zone added 10" to bring us up to an R38 insulation rating. They were quick and cleaned up after themselves. Very very reasonable price. We could tell a difference right away that the house was staying warmer. read more

Jerry did a great job on our house by putting in a whole house fan. He worked well with us, showed up on time every morning and worked with in the timeframe he had told us. He also did insulation on our house which seems to be working at this time but we'll really know when summer starts if this worked or not. Prices were reasonable, and quality of work was exceptional. read more

We have been highly satisfied with Comfort Zone Inc's work for many years - from installation of the system to their annual service visits. Technicians and office staff are professional and friendly. The technicians arrive as promised and work efficiently. We recommend Comfort Zone Inc to all family and friends. read more

Steve and his crew have been doing my aircon work for around 14 years now. They do the annual servicing and maintenance, installed a unit on our back apartment, and this week installed a whole new unit in the main house. Here's the bottom line: they are incredible!!! Pricing is really good, work is thorough and clean, and everyone is just super friendly. And the office staff are really good at what they do. So to Steve, Jim, Ray, Kelly, Kellina and Ashley - well done. I recommend you guys in the highest possible way! read more

So happy I was referred to this company. Showed up on time and helped me pick out a AC unit that suited my needs. Steve and his crew were very professional and care about what they do. Keep up the good work Comfort Zone. read more

Comfort Zone is a good company and provides a great service. Steve fixed our broken air conditioner a few summers ago so when our furnace broke we knew who to call. He was prompt, knowledgeable and very professional. I highly recommend this company for your HVAC needs. read more

Used another company for the initial install and that did not go very well. Then remodeled the house few years later and hired a general contractor who used Comfort Zone to redo the duct work. Fired the general, but kept comfort zone. Found the work to be good, they did a good job in re-routing the ac to better cool. Their prices were not too bad. They still maintain the system and come out every six months or so and have been great. When I tell them to do whatever need be done to keep the system working, they usually tell me that nothing need be done other than change the filter. IN FACT THEY TOLD ME NOT TO PURCHASE THE HEPA FILTERS THROUGH THEM, BECAUSE I COULD GET THEM CHEAPER ONLINE. Impressed by any contractor who would undercut his own business so that I could save money. read more

Comfort Zone Rocks!!! We had 4 different HVAC companies come out over 2 years, and no one could fix the problem, so our A/C kept breaking down every few months. Steve is a genius! He located the cause of the A/C shutting off, something none of the previous companies could do. And Maria in the office is wonderful - scheduling runs like clockwork - they arrive when they say they will! Steve and Maria are professional, ethical and just plain nice! We highly recommend Comfort Zone! read more

Heater would be nice if you could get replacement parts Broke heating element and Comfort Zone does NOT make or sell a replacement part. So when buying this heater if it brakes you might as well through it away. SAD read more

Steve, Jim and crew were fantastic. On time, determined our needs and provided the perfect solution for our 107 year old house. Thank goodness for attic space! Comfort Zone was very professional and very clean and conscientious. read more

Gary just finished up helping us get our AC back to functional and I was super impressed. Very professional and cordial when he greeted us and got straight to work. Our AC works great now and I'll be recommending him to our landlord should we need him again. read more

I can't say enough about Comfort Zone!!!! The customer service was exceptional!!!!! I could go on for days about my experience with Steve and Kelly but I'm gonna sum it up for you.... In MY opinion if you don't hire Comfort Zone for your air or heating needs your an IDIOT!!!!! Thank you again for an AMAZING job!!!!!!!!! read more

This is the best service business we have ever worked with. Always on time and fix the problem ASAP for a reasonable price. If you need any heating or air conditioning repair this is a first class outfit! read more

I have been using Comfort Zone for 20 years. Always professional service with quick response time. Pricing is very reasonable too. I highly recommend them for your HVAC needs! Steve is the best! Julie, Glendora read more

I had my HVAC updated with two new units,for my upstairs and downstairs. Kellina and Ashley were terrific during the bidding process and while the project was being completed. Steve and the guys are to be commended for a level of professionalism that is not always witnessed in home services. Their work was much appreciated and warrants recognition and I will be sure to refer them to my friends and colleagues. read more

Steve came out right away and gave us an estimate for a new furnace. He was back out a week later and installed the furnace. He was very professional friendly and helpful about which furnace would be best for my home. I felt he was fair upfront and would highly recommend him to anyone looking for an air conditioning/heating company. Hard to find honest, trust worthy companies but I have. Great job to Steve and his crew. read more

A 5 Star Company! Steve and his staff just installed a 2nd A/C unit for our upstairs, and I am very happy with the quality of the installation. The staff at Comfort Zone, Inc are professional, very skilled and courteous. They took extra measures to protect our hardwood floors and stairway, and vacuumed each night any debris from the installation. Our installation incorporated special registers that matched with our Craftsman home. Pricing is competitive and I really enjoyed working with their office staff. Amazing Customer Service! Thank you for making this a great experience! I highly recommend this company for all of your heating and air conditioning needs! read more

I contracted Comfort Zone to replace my existing heating and air unit. There pricing was very good and the crew was very professional and courteous. They showed up on time and finished when they said they would and Steve the owner goes the extra mile to take care of business. After they left the job you would never know they were here. Maria who works in the office is right on top of business. You don't find many contractors that operate in a professional manner as Comfort Zone does. Mike & Jean Jones read more