Igor was friendly, knowledgeable and finished the work quickly, and had a great chat. Highly…read morerecommended.

I highly recommend Maksym for any issues with your system. He arrived on time and got right to…read morediagnosing the problem. He explained the issue and fixed it quickly. He didn't try to recommend any unnecessary work. I really appreciate an honest job well done!

True North Heating & Air are heroes! Dmitriy came through for me when I smelled something off,…read morefirst with my heater, then with my AC. I was in a tough situation with limited time, but he was fast to respond and coordinate. What a relief! Dmitriy sent Gene, who arrived as soon as he could, and he inspected everything meticulously. It was going to be a lot of work because years had gone by and the HVAC system had not been maintained (cleaned). He had to go and take care of another appointment and get supplies for my job, but he promised he would be back as soon as possible (3-4 hours). I was anxious to get going, but I understood, and he actually came back sooner than we both expected! He spent hours cleaning everything and then checking that everything worked. I'm so happy that the heater is clean and didn't actually have a problem, and that the AC is clean too and refilled (the smell came from not having been used for a while). I am eternally grateful to True North Heating & Air for coming through for me. They were fast to respond, communicated well with me throughout the project, reasonably priced, professional, understanding, and friendly. If I ever have another problem (or when it's time for an annual cleaning), I'm calling them without hesitation!

Honest, Prompt, and No-Charge Service - Highly Recommend!…read more **Review:** Two days ago, I needed urgent help with my in-laws' Braeburn thermostat screen going completely blank during the start of a heat wave. My husband was at their house (about 35 minutes from us in Laguna Niguel) to take his mom to a doctor's appointment and quickly tried a few sets of AAA batteries from around the house, but nothing worked. He assumed the batteries were fine since other devices like the TV weren't showing low battery warnings. With time running out, he asked me to find a reliable HVAC pro who could come the next day. I first considered a handyman, but as I thought more about it, I realized the issue might be wiring or the HVAC system itself, so I switched to searching Yelp for specialists in Orange County. True North Heating & Air was the second company to respond, and they were able to schedule an appointment quickly for the following day. To check their trustworthiness, I asked Grok for some research and also looked them up on BBB.org. I was pleased to see they are accredited members with a solid A rating (only not an A+ because they've been members for about 2 years). That gave me confidence. The technician arrived within the promised time window. He swapped in fresh batteries, confirmed the system was running normally, and was in and out quickly. Less than thirty minutes later, I received a follow-up text directly from the owner, Dmitriy, letting me know everything was working properly. To my surprise and gratitude, he said they would **not** be charging us for the visit since it was just batteries, even though the issue stemmed from us not using brand-new ones initially. Dmitriy was very cordial, prompt in all communications, and showed real integrity by not charging my elderly in-laws for such a simple fix. I truly appreciated that level of honesty and customer care, especially in a situation where many companies might have billed a service call fee. One small note: The caregiver who was there said the tech was only at the house for about 3 minutes and seemed a bit rushed/annoyed as he left for his next appointment (something along the lines of having more important jobs to handle). It came across as mildly rude in the moment, but honestly, I can understand. It's frustrating when a call turns out to be something as basic as dead batteries that anyone could have fixed with the right ones. It didn't detract from the overall excellent experience. If you're in Orange County and need HVAC help--whether it's a quick fix or something bigger--True North Heating & Air is trustworthy, responsive, and fair. Thank you, Dmitriy and team! We will be contacting them again for any HVAC issues in the future. **5 stars**

Had another great experience with Mission Viejo Heating & Air and Brent. He arrived within the…read moretimeframe promised and was thorough in maintaining our HVAC system. He was patient in explaining the work being done, sharing new technologies that are available and answering questions (especially since our AC system is on the older side). The price was reasonable for the performed and Brent's expertise gave us confidence that our AC will work smoothly when we need it. I also appreciate how he took the extra step to keep our home clean by using shoe covers. We continue to appreciate the service that Mission Viejo provides to keep our HVAC running smoothly!

Required service in a timely manner given the recent heat wave. I called yesterday and Martin…read moreGarcia arrived within the agreed timeframe. He quickly identified the problem and resolved it in short order. Mission Viejo Heating & Air honored our warranty and resolved the issue at no cost to us. Great customer service and experience all around. Thank you so much, Dave G

Valente is an amazing person and technician. He came to my business and was able to figure out what…read morewas wrong with my AC unit and jumpstarted it. He also worked tirelessly to provide an estimate that would work with my budget and limitations. People like Valente deserves more credit for the work they do so that we can relax in the middle of a hot day. Thank you Valente for your fighting spirit and the work you do!

Needed service and found Pristine A/C through a friend's recommendation. Very happy with how quick…read morethey were able to come out, which is important when its miserably hot. They were very professional and easy to work with. Great experience. Would also recommend to my friends.

Jake from Apex is amazing! He was so patient when the tenant in my condo had a last minute…read moreemergency and had to reschedule his appointment twice. Jake coordinated directly with him and kept me, his landlord, in the loop. They finally connected and Jake called me with a thorough diagnosis and pricing options. Within minutes he had a detailed quote in my email inbox. Absolutely no pressure at all to commit to anything. I'm reviewing the options and will definitely be giving him a call to complete the work when I've decided. Thanks Apex!

Diagnosed our AC issue very quickly and offered a fair price for repair. Jake was very courteous…read moreand fast!

We hired Seaside AC & Heating to replace a broken pan in the attic, which was leaking. They came…read moreout within 2 days to investigate and give us a quote for any work to be done. It now has been replaced and is working well. Steve and Marcos, were punctual, respectful and the price quoted was also the best pricing. So many of the quotes included extras which were not needed. Since we are senior citizens, it was important to have a company who must be honest and not trying to run up the price to make more money for their companies. So, thank you Seaside, for your exceptional service and pricing. Bill D.

Great experience overall. Steve came out and did the site survey then provided a quote. I wanted a…read morespecific brand and he suggested a specific size and model; he didn't try to upsell a larger unit. On the installation date, Felipe and his son Jio came out to do a clean, neat job. It's not the cheapest price however I feel it's an excellent value. When I first fired up the unit I was amazed how quickly my house cooled down. I'm hoping, with proper maintenance, that I have several years of trouble-free service.

I reached out to this company to schedule a diagnostic for AC issues I was having - they were able…read moreto help me troubleshoot a very easy issue over the phone. Very impressed with their integrity- they will be my go to for all HVAC services going forward. Highly recommend.

Reached out to South County Air Services with a problem with the furnace. I listed out all of the…read moresymptoms I saw and pictures of everything I tried - they responded immediately suggesting that I check my transformer. It ended up being the issue, and I was able to order a new one ASAP! I appreciate their expertise and that they were not just trying to offer me services I didn't need. I have them saved in my speed dial for when I need on-site help! I am confident that they will be able to help me without just trying to gouge me!

Responded same day and were able to get someone out first thing next day. Friendly, professional,…read morequick, and efficient through the whole process. Would recommend to everyone.

Update - 10/2025: Unfortunately, I've had to lower my rating based on a recent experience and…read moreinteraction with the owner of the company. While doing unrelated work behind a bathroom wall adjacent to the garage where the furnace is located, I discovered that the return plenum had several unsealed seams and an open connection into a wall cavity. This area was supposed to be "cleaned and sealed" per the contract but was left incomplete. When I contacted Ron with photos, he said the section wasn't accessible during installation and noted that the job had passed HERS testing. At his request, I measured the opening, but after providing the dimensions, he replied that it still wasn't large enough for his "smallest guy" to enter, without offering any alternative solution or to come out and inspect the issue. Even if full access was limited, there could have been other reasonable ways to seal off the cavity during the installation, such as adding a simple baffle or barrier. At the very least, I would have expected to be informed that the plenum couldn't be fully sealed and that there was an open gap so it could be addressed properly later. I've since sealed the area myself to prevent air from the wall cavity and attic from being drawn into the return. My goal was simply to close off obvious gaps, not to redo the entire installation, but to ensure the return cavity was properly enclosed. We spent a significant amount of money on this system (and also had the company replace my in-laws' PTAC unit), so I had hoped for more follow-through and support when this issue came up. While the system itself performs well, I am disappointed by the response and focus on passing HERS testing rather than workmanship. Given how this was handled, I'd be hesitant to use the company again for future HVAC service or maintenance.