AJ replied that they cannot attend to my AC problem. I have a Bryant HVAC system and they are supposed to be approved service company, but they just said they are unavailable. read more

Requested service from them for our broken HVAC. Luckily they were available for the same day. Jose showed up promptly and explained all the steps he took with details and patiently answered all my question. The price was reasonable and the technician was very professional and kind. They fixed our AC within an hour. Great experience overall and definitely recommend them to others. read more

Just used AJ heating and cooling for the first time based on their great yelp reviews. They didn't disappoint. Repair guy, Jose, came on time and very friendly and professional. He got my A/C blowing cold air again within an hour. He was very knowledgeable and answered all my questions and concerns about my HVAC system. The repair cost seemed very reasonable as well based on the A+ level of professionalism. I found my "go-to" company and would 100% recommend them. I'm going to contact them to learn about their yearly service contract options that Jose informed me about. Thanks so much AJ! read more

I had a very good experience with AJ Heating and Cooling. I had received several quotes from different companies and AJ was not the cheapest nor the most expensive. He was the only one who recommended we not only replace our 50+ year old ducts as he said we were getting significant loss from the ducts, but also move the registers to get more efficient heating and cooling in each room. The ducts had asbestos tape on them, so his team had to do a proper abatement, and they replaced our ducts. We also upgraded from a gas hvac system to a Mitsubishi heat pump system. The owner was there every day and personally responded to our questions. He came by to fine tune our 444 which is the piece that talks to the current ecobee thermostat. As a bonus, when he found out we wanted to replace our old gas water heater with a larger heat pump unit, he built an extension to the heat exchange platform and moved the hvac system over enough to give us the extra room without also needing to do a huge change to the hvac location. Additionally, his team's finishing work was very good. Because the registers were all moved from the walls to the ceiling, each register hole had to be patched and textured. When we color matched the wall when they were gone, the texture is so perfect we can't even see there is a patch there. Finally, they were very clean and tidy even using a vacuum while cutting the holes in the ceiling for the new registers. read more

AJ Heating & Cooling - New heat pump water heater now installed thanks to AJ Heating next to new Mitsubishi heat pump HVAC. - Heating & Air Conditioning/HVAC Near Me - Hayward, California

My wife and I needed a whole house humidifier installed. Something I've done before. Where it needed to be installed would have been a nightmare for me. I called AJ Heating and Cooling and a couple days later Josh came and installed the humidifier. There was much work to be done. AJ and Josh were both great to work with and very knowledgeable. I will be definitely using them for all future services. read more

Jose came to our house on the same morning we reached out, and replaced the electric board in the afternoon. great work, super transparent, and offered a lot of valuable suggestions. thank you, jose! read more

Based on the yelp reviews, I expected AJ Heating & Cooling to be a good choice for an AC estimate. Boy was I wrong. Jose told me the ducts needed to be insulated which would cost some money after seeing the crawlspace and attic. The other AC contractor had told me my ducts were already insulated and he had taken photos showing it wrapped w insulation. I knew ajose was making it up. When I asked him about city inspector choking out the AC after it is installed, he asked if my 1 yr old Furnace had by been inspected by the futy. I said no. Then Jose said tge City would charge him a fine of at least $2500 when he went to file for an AC permit bc tge Furnace had jot been inspected. And he said he would have to pass on tge $2500-3000 fibs to me. I said that sounds strange Jose looked very nervous telling this. I knew he was lying. After talking w tge next AC contractor, he sajd Jose told me a line of baloney. Definitely do not recommend this guy!​ read more

Stop trying to decide who you should contact for your furnace and AC needs. Jose is the man! We used Jose when we installed our heating system and duct work almost 10 years ago, and we've never had any issues with it. We recently decided to install central air conditioning and did not hesitate for one second to use Jose once again. He was efficient, honest, helpful and offered a great price. The value of his service is unmatched. We have recommended his service repeatedly and all our friends have had exceptional experiences as well. So as I said, your search for a trustworthy and fantastic company is over. Call AJ Heating and Cooling. read more

They installed Mitsubishi Mini Splits. Started work on time. Kept the house very clean. Left the house and the exterior very clean at the end of the day before leaving. His price was very competitive. They are very well mannered and easy to do business with. They gave us excellent advice on the location and height of the interior units. They stayed on top of things to make sure the inspection was completed on the first visit with zero changes required by the inspector. As an authorized Mitsubishi installer, we received the maximum warranty. At another location, decades ago, the Mitsubishi is still working. The machines they installed are very quiet both inside and the outside is amazingly quiet. The A/C and Heater heat up the rooms very fast. We would not hesitate to call them back or recommend them to others! read more

Our ac went out last night. I submitted an email to them, Heidi responded in the morning but they did not have availability. She said she would call if they did. And sure enough they had a moment, stopped by and fixed my unit. Quick, reliable and great value. I definitely recommend read more

Got several quotes and many different opinions. Jose was by far the best and most trustable. Highly recommend! Replaced my old furnace and ac with Mitsu heat pump. read more

My AC wasn't cooling and I called the company after hours. Jose responded but did not have availability until the following week. I told him I will not be available next week and he squeezed me in the next morning. They came as promised and fixed my AC quickly. The price was good and I am a satisfied customer! Two days later, the AC in my daughter's home in Dublin also broke and with 3 kids, needed it fixed right away. Jose came to the rescue right away as well. Thank you, Jose! read more

Jose (owner) at AJ Heating & Cooling is fantastic! Jose provided a thorough and competitive quote. He provided great communication throughout the process. His team was on-time, courteous, professional, and did excellent work! My wife was particularly struck by how well they cleaned our house following each day of work. A great company and people to work with - I highly recommend them. read more

I cannot speak more highly of AJ Heating and Cooling. Jose is professional, giving us several options before we decided to install the mini-split AC/heater system. It's so refreshing to work with folks who showed up when they said they would and completed the job in the time estimate given and the cost quoted. The crew arrived on time and made sure to clean up before leaving for the day. We have an indoor cat and the crew was so wonderful in making sure they shut the front door behind them when coming or going. We are so happy we went with the system recommended. It's perfect for our home and budget.I can fully recommend AJ Heating and Cooling for the quality of their work, the value of the service they provide and the great communication. We will definitely be hiring the team in the future for other projects. read more

Our 35 year old Furnace stopped running two days before Thanksgiving. After struggling with quotes and scheduling from several other companies I had the good fortune to contact Jose. He worked with me to get me the equipment I wanted without over or under selling. Jose is amazingly honest and his whole crew efficient and skilled. Great pricing and quick install. You just can't do any better. read more

I called on two successive days and left messages with your wife. No return calls. I wanted a smaller company and very close to my job site to install a complete hvac system. I figured more attention and convenience as the job is only 15 minutes away. I understand busy but too busy to even return calls? Wife says a wait list to return calls!? I can take my business elsewhere. read more

Recently replaced my furnace through AJ Heating and Cooling. Prices were fair and about $100 less than the next closest estimate. I decided to go with AJ Heating and Cooling because of the 5-year labor warranty when other places only offered 3 and the quick response time. When I called for an estimate, Jose was already near my area and was able to show up just a few hours later. For all the appointments, Jose showed up on-time or even early. Jose and his team took out the old furnace and installed the new one in 4 hours, which was much faster than I anticipated. Overall great service and communication. read more

Last spring, I had AC installed, furnace replaced and all new ducting installed. Had 4 different contractors visit to give estimate. Only one physically went into the attic and foundation crawlspaces to inspect for quote--this was the owner Jose. He was on time, communicated well and and answered all my questions. Jose also pointed out that the same 6" duct running to our small bathrooms was the same size duct supplying our two largest rooms: the family and living rooms, noting this was not very efficient. They increased the duct size to the large rooms, including our master bedroom, and added additional vents. They also installed an additional return on the far side of the house; the results have been extraordinary. The house cools and warms quickly and temps are well balanced. They were done in two days. Having personally installed skylights and sun tunnels, I can say it takes some crawling and contorting one's body to get to our vents; but these guys got it done without any damage to our ceiling. I will note power was knocked out to a bathroom and a light fixture was dropped and dangled by its wiring--they fixed both these issues immediately on the 2nd day. They were clean, timely and passed the first inspection/home energy audit with flying colors. Their quote for just ac install and furnace replacement was actually the low bid. Going with them for replacing and adding duct work put us at 17k. I will note that due to "supply chain issues" the price went up to 1k, but having worked in general contracting for 30+ years, I felt this was reasonable--they were the only contractor to note that pricing on the ducting was going to increase. We're coming up on a year since the install and everything Jose installed is working well. read more

I reached out to AJ Heating & Cooling for a quote on a new central heating and air install for our house. Jose came out to my house and I knew right away that this was the guy I wanted for this job. Jose was knowledgeable, thorough, transparent and professional. He has great communication and answered all my questions promptly. When the job started the crew treated my home like it was theirs. Everyone was courteous and professional. Jose went above and beyond in every area. The equipment they installed is fantastic, our old house feels new! I HIGHLY recommend this team for any HVAC related job! read more

Jose and his team were very professional and prompt. We hired them to replace the ductwork in our house. They wore masks and booties, laid runners down throughout the house, and covered our belongings with plastic to protect them from debris. They vacuumed after they completed the work. Jose was very knowledgeable and answered all the questions we had. Prior to the duct replacement, the air flow to the master bedroom (located furthest from the furnace) was very poor. Jose said that our 50 year old ducts had a lot of leaks and weren't positioned properly. Jose also replaced the registers throughout the house with high flow vents and was able to double the airflow to our master bedroom. We can now feel the hot air blowing out into the room, which is a first! Overall, we were pleased with Jose's service and work. He paid attention to the details to make sure we were happy customers. We would highly recommend his company. read more

HIGHLY RECOMMENDED! Very professional, honest, informative, great communication and paperwork, and very quick turnaround. Our furnace died on us last weekend and we called AJ on Saturday to setup repair visit. Jose showed up on Monday as scheduled and diagnosed the problem. He thoroughly tested the system, explained the problem and offered 3 options: 1. Repair the 35 year old inefficient furnace by searching for an old, out of production, relay. 2. Install a new efficient basic single stage furnace. Comparable unit to what we had but more efficient and stronger. 3. Install a new efficient basic dual stage furnace. Together we discussed the pros and cons of each option - efficiency, direct costs, long term savings, etc. We touched on some higher-end options, but quickly agreed that they were beyond our need and budget. For the new installations, he said it could be done by Friday. My wife and I discussed the options that evening and decided to go with Option 2. I called Jose on Tuesday morning and he said he could have it all removed, cleaned, installed and done on Thursday morning. I agreed and within an hour, he dropped by my office to review and sign the contracts. Thursday morning, Jose and his coworker came on time, removed the old furnace, pipes, and ducts, cleaned the area, and in 4 hours installed the new furnace, pipes, ducts, insulation and even a new digital thermostat! We went over the thermostat settings together and he showed me the new furnace and how it operates. We reviewed the paperwork, city permit and inspection process, and paid by credit card! In sum, working with Jose and AJ Heating and Cooling Services was a very easy process, affordable, and the quick turnaround will save us from the freezing temperatures tonight! Thank you, Jose and AJ! read more

AJ Heating & Cooling - New furnace installed! - Heating & Air Conditioning/HVAC Near Me - Hayward, California

I highly recommend AJ Heating & Cooling for any HVAC duct work you may have. When Jose came out to give me a bid, he crawled under the house. At first, I thought he was an employee, only to later learn that he owns AJ Heating & Cooling (WOW!) Jose took pictures of the existing duct work and then explained how the new ducts would be installed. The entire team from AJ Heating & Cooling were professional, clean, showed up on time, and did a fantastic job. The folks at AJ Heating & Cooling are the BEST!!! read more

Professional team! I'm lucky to have AJ Heating & Cooling install the ductwork and heater on my house. My house is very old (built in 1937), there was not much room for the ductwork and there was existing wiring right below the vent we planned to open. I made several quotes, the other contractors were not confident in this project, and were reluctant to get a permit. But Jose was very confident and gave me a reasonable quote with permit included. Jose's team has all kinds of professional workers who worked together to get the job done. They finished everything in a single day, while the other contractors told me they would spend 3~5 days. When the inspector came to my house, he told me that they did a good job and he is never disappointed with their work. I strongly recommend AJ Heating & Cooling to anyone who is looking for heating & cooling service. read more

AJ was referred by another company and they came out the next day on the weekend. Mr Abraham was very professional & his expertise was amazing; he took his time & thoroughly explained every detail to me. He really knows boiler heating treatment/recommendations. My boiler is now working fine without breaking the bank! read more

The service guy was wearing a mask when he showed up. Very good customer service, very fast, and very knowledgeable. Fixed the problem within half an hour. read more

I had Jose redid the whole AC, Heater Furnace and duct system about 3 years ago in Fremont. It has been good so far with no problem. I'm very happy with it. Jose was very honest and his team did a great job. He is licensed and bonded. His quote wasn't the lowest but I went ahead and worked with him. I'm glad I did. The only thing I wish I did was to go with a little bigger AC. But, the current one is sufficient unless temperature reaches above 100, which is very rare in Fremont. P.S. He may not remember me now (it has been a while.) But, I still remember him. Thank you Jose. read more

My gas furnace wouldn't start, so I tried troubleshooting, following online videos and help, and couldn't identify the problem. I sent request for quotes to several vendors individually, and AJ was the first to respond. After reading reviews thoroughly, I chose AJ, even though they didn't have many recent Yelp reviews. I made an appointment, Jose came out and diagnosed the problem in 2 minutes. Even though the thermostat display looked good, it wasn't sending a signal to the furnace. He said I could replace it myself, or he could sell and install one he had with him, and indicated the price difference. He fiddled with the thermostat a bit more, removed and out back in the same batteries, which caused the thermostat to reset. So now it works again. He just charged me his standard service call fee, which was the lowest among the vendors I contacted. I very strongly recommend Jose and AJ heating & cooling. read more

I hired Jose twice. Both projects went pretty well. The more recent project especially impressed me. 1. They found the old air duct contained asbestos. They coordinated with Synergy, an asbestos company, to remove asbestos without having me talk to Synergy. Other contractors I got quotes from all asked me to hire an asbestos company by myself. 2. The leak test (required for city permit) showed a borderline pass, which later turned out the test was inaccurate. They could have done nothing because they passed the test anyway. However, Jose and his folks were disappointed by the borderline numbers, came to my home again with the leak test company and re-did the test. During the procedure, they found the leak test company didn't seal one vent correctly, which caused inaccurate test results. After the test company fixed that, the numbers looked much better. 3. I got quotes from two other companies. The price Jose gave was 25% lower than the others, and it includes asbestos removal and city permit application. read more

I'm giving this company 5 stars. What I look for is honesty. Jose did a great job and didn't try to sell me on anything extra. I highly recommend them. I used them to repair my AC. read more

Our air conditioner broke down during the heat wave. I called several repair companies, all I got was recording. None of them returned my calls. I found AJ Heating & Cooling in the Yelp. I called them based on all the great reviews. There was actual someone answered the phone instead of recording. They gave me an appointment the next day. Jose showed up right on time and found the problem immediately. The capacitor was broke. He has the part and replaced it. He also replaced our filter for free. The repair took only 30 minutes. Now our air conditioner is working again. Jose knows what his doing, he is quick and honest. The charges was reasonable. I will definitely use them again in the future. I was lucky to found AJ Heating & Cooling in Yelp. Highly recommended. read more

Can't believe I never wrote a review back when I had Jose and his crew out to replace my entire hvac system. My old system was for sure on its last legs. I had multiple quotes but Jose was the only one to sketch out my house. I remember when he did that my general contractors and I looked at each other with a look of "we got a real one here" I had a string of "used car salesman" types trying to sell me HVAC systems. It had become a joke between me & my contractors. Jose was different. He took it seriously and we could tell. He was honest and told me I needed new ducts (which I knew, but some companies tried to tell me they were fine, they were not). His quote was middle+ of the road, but I told him "my gut tells me that I should go with you..." and I generally trust my instincts. I am glad I did. His installation was great, and his HERS testing score was impressive. The guy doing my test wanted to know who did my system. I love the whole thing and can't wait to see how it performs the rest of this year now w/new insulation in the house. I had Jose out in Feb of 2020, right before Covid.... read more

AJ Heating and Cooling replaced the duct work under my house, and they were wonderful! Jose is very professional, gave a thorough quote, and supervised the whole job. The asbestos removal company he used sealed off the house and removed everything in an expert manner so that we felt safe in the home. The clean up was spotless after this process. The duct work was installed and finished in 2 days. I am very happy with this company and will use them in the future. read more

Called the shop around July-2016. A nice lady who took my call was nice and she informed me the next available appointment will be in a month. That was sad to hear on my end, because I guess I am just not as lucky as the other Yelpers who reviewed and said the company, "came out within an hour" or "same day appointment". I left my information for them to call me back but never received a call back. read more

Our AC wasn't working right after changing our thermostat. We tried to call our local Hvac technician but to no avail. We were suffering in the heat and didn't know what to do. Today we called AJ's Heating and cooling. They arrived promptly and were able to fix the issues we were dealing with. Definitely going to continue to use them in the future. read more

I called AJ Heating after going 10 days without heat. It was around 2:30pm Tuesday of Thanksgiving week, so I was expecting to have to wait. Turned out Jose was able to squeeze me in same day and was able to diagnose and do a temporary fix. He got the needed part the next day and installed it in 15-20 minutes and we were good to go for a warm and toasty Thanksgiving weekend. He was friendly and courteous as was the lady I spoke with on the phone. I will definitely call AJ Heating for future service and repair when needed. read more

I decided to give AJ a try after reading the reviews and they did not disappoint. When I called the receptionist said the earliest opening was two days away but noticed a gap in their schedule. She said she would give the technician a call and see if it was available. It was available and Jose and Jesus arrived promptly at 11. They were professional, friendly, and respectful of my home. Within 10 minutes they found the issue. They also took time to perform a full diagnostic to ensure nothing was amiss. read more

My air conditioning unit has been broken for the last 2 years or so. I had it checked by a couple of people, 1 said it was a busted motor, the other said the unit was too small. Costs for each fix was too expensive to me. Last few days the heat was unbearable so I called AJ and they set me up with a same day appointment between 5 to 6. I get home at around 5 and Jose was already done with the repairs and checking the temperature of each vent. It took him a few minutes to identify the problem and replace the busted part, at a very reasonable price. Sleep will be very good tonight. Highly recommended. read more

I had them come out to try and figure out what was wrong with my furnace. I was able to make an appt very quickly and they called first and showed up on time. It turned out that I just needed to replace my filters (how embarassing!). The technician was very friendly and thorough and gave me good information. I would call them again anytime. read more

Jose came out to review my project. Out of all the contractors I asked to quote my project, he seemed to be the most perpared and thorough while reviewing the scope of work. Unfortunately he never sent me a quote and only after a week I contacted him to find out if I will be seeing a quote. He did respond quickly but only after contacting him. He wasn't interested in the project, I just wish he had let me know. If his price was in line with the other quotes, I would probably have given him my business. read more

Jose came over on one of the hottest days of the year to fix our Bryant Air Conditioning unit. We had another guy come the night before and they wanted to replace the whole unit (many $$$). Jose knew to check the dual capacitor and that was the right thing to do. He replaced it within 20 minutes and now we're so happy he did because the house is cooling off... The other guy would have taken a week or more and cost at least 10-20x more $. Jose es lo mejor!! read more

AJ Heating & Cooling - Jose knew exactly what to do... And removed the dual capacitor to check it. - Heating & Air Conditioning/HVAC Near Me - Hayward, California

See all