1. LJ Mechanical Heating & Cooling

    1. LJ Mechanical Heating & Cooling

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    LJ Mechanical Heating & Cooling

    5.0 (21 reviews)
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    10 minutes

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    7 months ago

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    Larry A.

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    8 months ago

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    Larry A.

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    7 months ago

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    Larry A.

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    9 months ago

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    Larry A.

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    4 years ago

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    6 years ago

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    Larry A.

    Thank you for the review! Im glad to help

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    4 years ago

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    Ask the Community - LJ Mechanical Heating & Cooling

    Review Highlights - LJ Mechanical Heating & Cooling

    Thanks to Larry's phone help, I was able to solve the furnace problem without a service visit.

    Mentioned in 21 reviews

    Read more highlights

    Dynamic Air Systems - Will removing and rebuilding blower assembly for commercial rooftop package unit.

    Dynamic Air Systems

    (62 reviews)

    I needed someone to figure out why my HVAC System suddenly stopped working. Dynamic air systems…read moreresponded to me after hours, set up an appointment quickly, and arrived at my house when promised. They could not fix the issue, but were able to tell me that I needed an electrician to repair a breaker. This advice led me to a quick solution and the air-conditioning is back on! Thank you so much for the quick service and for your good advice. It was definitely worth the $165 diagnostic fee.

    Dynamic came highly recommended by a neighbor and they were absolutely fantastic. We've had several…read moreissues with our HVAC system not running properly and not cooling our home over the years. This is the fourth HVAC company we have had come out to take a look and they were the only ones to be able to truly figure out the problem. Eli was able to quickly diagnose the issue, Jason was very communicative and friendly and made sure that we got text updates and phone calls for every appointment. We needed a whole new system due to an evaporator coil manufacture defect issue and they gave us several options to choose from in order to accommodate our budget. Chris and Paris came out to install our new system and they worked quickly, were able to get our new air-conditioning unit and evaporator coil installed in less than a day, and they did great work; it has been running amazing ever since. Jason made sure to get us a system that could accommodate the size of our Home as the one that came with the house was too small for the size of our house. I cannot say enough great things about this team, I very highly recommend calling them for your HVAC needs!

    Jr’s Heating & Air - 2 ac unit  for save energy and control 2 different locations

    Jr’s Heating & Air

    (20 reviews)

    We had a broken AC because of faulty wiring of PG&E and the whole episode was during one of the…read moreheatwaves. Jr's service was recommended to us on a very short notice and he was able to make it the same day after hour. He was super on time and had great communication letting us now when he was on the way. We have worked with several AC companies, many high review ones you see on the internet in bay area region. The quality of the work Jr delivered and high volume of cool air coming from AC reminded me today to come and write this review. We expected just a consultation but he had the parts on spot and changed the burned unit right in the first 10 minute of showing up. This is not what you expect usually from AC guys, they quote you for some parts that are not even broken and delay is the tactic. He even washed the filter of our AC recommended changing its type, and even when we asked about protecting our AC from rodent he provided the taping on the piping to reduce chance of damage. There were so many things that were addressed in a short 30 minute visit that need three other AC ppl to address it if we called other companies. Above all he was beyond fair, the quality of his work with the value and price he offers is unmatched. Trust this guy, he is a good family man that fixes your AC promptly with no gimmick.

    Our AC went out unexpectedly. When my husband called Jr's heating to set up an appointment, Pablo…read moreactually tried trouble shooting it with my husband over the phone and then FaceTime. When that didn't work, he came out the next morning. He was a very hard worker and spent about 2.5 hours working on our unit. For all of the work that he did, it cost a fraction of what I expected. We have his number saved for future needs and highly recommend Jr's Heating and Air!

    Air Sharks - Air Sharks team

    Air Sharks

    (97 reviews)

    North San Jose

    UPDATE 8/11: After I posted this review, I was contacted…read morenext day by a manager and then also the owner. The owner actually left a voicemail and I eventually called back. The owner apologized, wasn't defensive, didn't try to get to me explain my self and was just apologetic to what I experienced. They offered partial refund and service to show that they want to fix the wrong and prove that they are a great service company. ------ Original review: I had a very negative experience with air shark technician. My issue was needing the capacitor replaced. The fix was quick and I was clearly over charged. When I asked about this, the technician just said it's just business. He exaggerated the price of the part needed which is a capacitor saying it's like $200-$300. It's at most $50. It took him like 10 minutes to replace the part and said you either accept the charge and pay or I just take it out. It felt very predatory, like I already fixed it you might as well pay. He proceeds to measure temps and other various things just to pass time while he waits for me to decide if I want to pay or have him unfix it. I can accept being over charged but something about how this situation transpired left a bad taste for me. For example, why wouldn't you say you need to replace this and it cost this much for the fix instead of fixing it first then say pay or I take it off.

    Service requested: HVAC replacement. However, after the initial inspection the engineers told us we…read moreneeded to changed the ducts and insulation coming into our house to improve efficiency. It was an expensive upgrade but was the need of the time considering even a top notch system would only work at 40% efficiency. Engineer was thorough in examination. She took lot of photos. Explained the process. Air sharks didn't push for purchasing any particular equipment. We chose Daikin. Service: the work crew is very disciplined. Arrive on time. No loud noises. Informed us daily at the end of the day. Kept our house and side yard clean and tidy. Follow up: the inspection went well. We received the permit as per schedule. First year warranty is included. Whenever, we have called they promptly respond and understand our issue at hand. Over all we are beyond satisfied with contracting with them.

    Jazz Heating, Air Conditioning and Plumbing - Heating system noise diagnosis & repair

    Jazz Heating, Air Conditioning and Plumbing

    (2.5k reviews)

    Jazz was first responsible for fixing our broken dishwasher. The professionalism and education…read moregiven freely to me during the process really stood out. They hit another home run when Isaiah and Monty were assigned to a plumbing issue at my house. It was a hectic week to start, topped off with a backed up toilet that started to overflow. After I turned off the toilet and used a plunger and some elbow grease to fight back the overflow, I knew I needed a professional opinion. Turns out, Jazz not only fixed a huge backup of sewage, fixing the immediate issue; they did it with such professionalism that I was really impressed. Monty and Isaiah were a great team. Special shout out to their non-pushy approach. I really appreciated the speed, efficiency, professionalism and honesty that these associates demonstrated. The folks on the phone, such as Mario and Adrian/AJ, are also fantastic and really made the process easy end-to-end. Well done, Jazz. That was excellent overall value and the highest-quality service I could ever ask for.

    Called Jazz to change out laundry bibs that were stuck, and they came out within a few hours. Gave…read moreme a price after looking at the work. Given that I didn't have to wait days for an appointment, I agreed to the price, which was initially high compared to others. That being said, it ultimately became roughly the same, if not a little cheaper, than other places that charged by the hour or quarter hour, as the job was a little more complex than initially thought. The guy spent almost 2.5 hours here to change out two bibs (again, way more complex than he probably thought), and he did a wonderful job. My problems were addressed same day, same visit. If I chose other plumbers, I would have waited days before my items were addressed. I've used Jazz before with my older AC unit, and they will always have a spot in my contact list if I need help with my HVAC or plumbing.

    LJ Mechanical Heating & Cooling - hvac - Updated September 2026

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