Furnace fan was not working- had Sam come out and he had it fixed in about 5 minutes (replaced a failed motor start capacitor). He knows his stuff and is our go to guy for heating and cooling (this is the fourth time we have used him). Highly recommend! read more

Prompt, reliable and d fixed our AC without any issues, it was such a relief. Highly recommend them. It's scary to call someone & not feel like they will take advantage of you. I trust Grant Mechanical completely. A local company that's honest. read more

Just finished a gas furnace replacement with new central AC. Grant Mechanical was quick to respond and provide an estimate. They did have a backlog before getting to my job but since mine wasn't an emergency it was fine. Sam called a few days before our scheduled installation and everything went according to plan. They like to start early, so for my job they were onsite at 7:00 am. They estimated taking two days for the job but got it done in one. I dealt directly with Sam (the owner) always, and he is very responsive. Communication was good so I had a high degree of trust and confidence in the crew and they delivered. Cost wasn't cheap but seemed in line with competitors' estimates. Service and quality of workmanship is top notch. Recommend these guys to get it done right. read more

We had a failed HVAC system that was caused by poor design by a previous contractor. Sam redesigned the system and it has been working well for several years now with a couple of exceptions. The HVAC unit in our attic has a condensation drain line with a short vent pipe. The drain pipe somehow got blocked under the house and backed up the water resulting in water overflowing through to vent pipe into the ceiling of the bedroom below. We asked Sam to do a service call and he told us he was too busy. So we had to hire someone else. We have a 3 zone system and one of the zones appears to have a sticking damper. Because Sam is who installed this system and his sticker says for service to call him we tried once again to get Sam to help. He never even responded. Nice guy, but too busy to follow up when you have a problem with his installations. read more

I needed someone to inspect and service my elderly parents heater while knowing nothing about their system or when it was last serviced. Grant Mechanical was responsive, provided a competitive quote and was able to come out quickly. He took care of the project and left my parents warm and happy. read more

Sam is very professional, honest and delivers good service. He has helped nurse along my HVAC system that has a small coolant leak. The systems was installed by a previous contractor and Sam explained the effort that it would take to find the leak. I'm planning to install a new HVAC in 2025 and Sam will be the first person I call. read more

Excellent service. Fast, responsive. This was a service call as the filter was not blowing cold air. Taught me how to change the air filter.

I've used Sam Grant/Grant Mechanical for both a new furnace and a new AC (different times). Competitive prices, extremely efficient, professional crew, and they leave the job site immaculate. I was referred to Grant Mechanical by reading so many recommendations on Nextdoor. They all say the same thing that I'm reporting. read more

Prompt service and the issue was fixed quickly. He obviously knows his stuff, is a pleasant guy to talk to, and I've always felt fairly treated by his company. read more

I was having an A/C problem of the air not blowing much and not cool after a few hours of use, especially when the weather was the hottest this summer. -had Associated Heating of SF (Bryan) come out, he thought the Nest thermostat wiring might be the source and charged me $160. This did not solve the problem. -I called a different HVAC guy who will go unnamed, he wasn't very eager to come out and tried to talk me through a few steps, this didn't work so we set up an appointment- then he no-showed! I called him the next day and he was clueless about it, so forget using him. -several neighbors had used Sam Grant so I called him and we set up an apt for earlier this month, he arrived 30 mins early. On the phone he clearly informed me that it would cost at least $210 for the visit, which was OK with me if he could solve my issue. -he diagnosed that it prob needed a new capacitor and replaced it, total cost; $310 -this seems to have solved the problem, my a/c blows cool whenever I want and for how long I want. -I couldn't solve this on my own despite watching a lot of YouTube videos and Googling multiple sites. He knows his stuff. read more

Hottest day of the year and the air conditioner is on the fritz. Coincidence? Actually not, but more on that in a minute. I've used Sam before several years ago, his response to service calls is simply amazing. I texted him in the morning and in the early afternoon he called back asking what the problem was. I told him that the air coming out was not cold and I was concerned it had a freon leak like I saw with my refrigerator. He came over same day for a service call (note he's busy, I assume I was lucky here). He came over, and he called me when he was outside. He wearing a mask, and he noted that he already checked the refrigerant and everything was okay. Then he noted that my attic temperature was well above 100 degrees and that the duct work has heated up enough to heat the cooled air and reduce the efficiency. I kind of felt dumb for not recognizing that, it was a scorcher, but I note that he didn't make me feel dumb about it and I'm certain it never crossed his mind to add refrigerant that wasn't needed or other charges...he does business with integrity. So someday I will need a serious service call for my HVAC needs, and when it happens I'll be calling Sam again. read more

They are responsive, friendly and efficient! I think they did a great job with our AC. No issues.

We just had A/C installed by Grant Mechanical and are very pleased with the whole process. Sam (the owner) initially came out and went over all of the options. He said we can use our existing furnace because it had at least 5 years of life left while other contractors said we needed to replace our furnace. This saved us a good amount of money. Sam also provided the option for a slimmer A/C unit that would fit in a better area. The other contractors said we could not fit an A/C compressor in that location and instead proposed a unit with a larger footprint where we would have had to move one of our fruit trees in the backyard. Also, Sam said we could continue to use our existing thermostat while other contractors said we would need to replace it with a new one. Sam turned around the bid quickly as he promised. The other contractors took at least a week and came in at a much higher cost for just the A/C compressor and installation (ignoring the furnace replacement they said we needed). Sam was flexible and worked within our schedule. His crew was very friendly and completed the bulk of the install the first day. The second day was simply to do the wiring to the thermostat (delayed to 2nd day so they could be in the attic in the morning when it wasn't hot). Overall, very pleased with Grant Mechanical and would highly recommend! read more

HVAC heater was blowing cold air, and Sam quickly replaced a faulty ignitor. That was in December, and then last week we were getting cold air again. Called Sam on a Friday and he was able to come our first thing Monday morning, and discovered the ignitor had broken again. Sam honored the warranty of the part and his work and replaced it again with no charge. As with the first appointment, I appreciate the clear communication, having my call returned in a timely manner, working with an experienced technician, and showing up on time for his appointments. Also Sam coached me to do some troubleshooting on my own, which is an empowering thing as a customer. Highly recommend you give them a call! read more

Sam grant called back because he had a small open window to come by. This was a one day call back, so pretty fast. He was super knowledgeable and identified the problem right away. Very friendly and would use again. read more

Great service from Grant Mechanical! Sam gave me straight-forward advice about my HVAC system. He actually said I didn't need a service call--that everything was fine based on our conversation. Wow! I'll definitely call Sam again if I need an honest, experienced HVAC professional in the future. Thanks again! read more

Sam Grant installed our furnace, A/C, electronic air filter, etc. as part of a kitchen remodel a dozen years ago. His quote ten years ago was for quality products, and indeed they have been trouble free for a decade. When we did have a problem last year with the A/C and this year with the furnace, he was quick to respond and repair. Always fair prices, prompt and friendly service. read more

Sam came to my home and said he had 11 other bids to make that day. Needlesstosay he rushed through my home in ten minutes and I felt he was going too fast and we didn't have a chance to talk everything through. I started to explain my concerns and he said "I've got this", so he cut me off from asking questions or describing anything. He submitted a bid but I said I wanted a high efficiency furnace, he was angry he had to re-do the bid. I said I didn't have a chance to tell him I was planning on adding on so I wanted a furnace that would be able to handle more square footage and not have to by another furnace and the other bids I got were all bigger furnaces. I said I was willing to go with him, but I wanted a different size. That was unacceptable to him. He will not stay along enough to discuss then gets angry when you feel it needs to be discussed a bit more and planned out. He said all other bids were wrong, and apparently everyone else is stupid but him. He wanted me to patch the sheetrock and pay before it passed inspection. He gets mad if you ask questions, like if you have any questions about this major project on your own home it is somehow questioning his competency. He is super defensive, and I have no idea why, but his personality killed the deal for me. He calls and says he will start Monday and then I say we need a different size he cancels the whole thing. Whatever dude. Instead of taking time to explain things he just quits and gets mad. Very unprofessional and flat out rude. they were important questions. He just said "I've been doing this for years", but never explained how this would work, never explained how long the ducts would be to get the the back if I made an addition, or if they would have enough air force, or if it would pass inspection. He just took it personally and thought I was questioning his competency. I don't know, the man, this was not personal. I just needed real answers and he got mad I wanted to feel all was OK. read more

Sam knows his stuff. Showed up on time and confidently diagnosed the issue with our AC and quickly changed the faulty capacitor (which was strangely bulging out and close to exploding) with a part he had in his truck. The whole process took about 30-45 min. He also gave me some coaching on re-configuring a condensation drain on our AC. All other highly rated companies couldn't see us for about a week or two. Thanks Sam. read more

I do not recommend this company. He came out, overcharged me for a service call, and didn't do much of anything. He said the inducer motor needed to be replaced, but then he never got back to me. As it turned out, I had another company come out and they repaired it right then and there. They also charged me much less for the service call. The name of the company is Monteros HVAC in Mtn. View. That is who I recommend. read more

I called and told Sam that my heater was working intermittently. He explained to me that it was best to see it when it wasn't working, which was its situation when I phoned. He was booked that day, but was going to come the next day. Shortly after I hung up, he called back and said he was near my home and thought he could check it out before his day started. He came, he saw and he fixed it. Thank you Sam. read more

Our A/C went out in the middle of a heat wave and no one I called was picking up or returning messages. Grant Mechanical returned my call within 24 hours and had an appointment available due to a cancellation the next morning. Sam (the owner) came out on time and diagnosed the problem within 15 minutes. He didn't have the parts on hand and I wasn't optimistic that our A/C would get fixed anytime soon, but Sam went above and beyond by going to 2 different stores to find them and came back the same day to get everything fixed. He really knows his stuff. I highly recommend Grant Mechanical. read more

Our furnace just stopped working yesterday. We had used Grant Mechanical a couple times in the past, and I had been VERY happy with the experience. I called Grant late in the afternoon and reached Sam. He told me that he thought he knew what the problem was and would bring all of the parts he might need for our furnace. Sure enough, it needed 2 parts (including a motor), and he had everything with him. He explained what the problems were to my husband at the beginning of his visit. When I came home, he made sure to show me what work he had done and demonstrate that it was working well (even though he had already tested it himself.). He fixed everything, cleaned everything up, and was finished within an hour (for a pretty big job). Gran Mechanical is great, professional, respectful, timely, and very nice people. read more

My A/C went out during the recent heatwave. I couldn't open the windows at night because of the smoke from brush fires. I figured all the HVAC people were probably backed up, so I was very surprised that Sam came out the same day I called and had the unit up and running in 20 minutes!!!! He is very quick. The price was reasonable. I will definitely call him the next time I have any HVAC problems. read more

Our air conditioner was not functioning. I call Grant Mechanical, Inc and left a voice mail. About an hour later San Grant returned our call and arranged to come over and check out the 22 year old system later that day. He replaced a capacitor and had the system producing cold air in less than an hour. He found that we also needed the drain pump replaced and that the drain line was plugged. He was back within two days (on a Saturday) with the needed replacement pump and has restored our system to a full operation. Sam is great to work with and takes the time to discuss the issues, answer questions and offer solutions. We plan to replace old system next year and will definitely have Grant Mechanical Inc do the work. We felt we could not have been in better hands. read more

Sam was great. Super friendly, efficient and a local business owner. He replaced our circuit board on our AC unit. We thought the work would require much more time, effort & money based on other HVAC quotes but Sam came in, diagnosed the problem quickly, and was done in 45 minutes. read more

Sam was very prompt. My furnace died on me in the middle of January. It was an old furnace and I was looking to replace it. I contacted Grant Mechanical on Friday night. Sam was quick to respond and came out on Monday morning to take a look. He was knowledgable and his price was competitive. By Friday of the same week, he installed my new furnace. The work was clean. He did all the paper work for the permits. I am happy with the work. read more

I contacted these folks based on YELP reviews. Yelp has never failed me until now. I contacted this company to set-up an appt with Sam and he never showed for our scheduled appt. I called him 40 mins after our scheduled appt & he said it wasn't on the books. He later recalled our conversation over the phone & apologized for the mistake. He was able to squeeze me in the afternoon of that day and after 20min of looking at my AC system, I was charged $120 just for the estimate. I was shocked that they charged for a quick visit & appalled that he never mentioned that there would be a fee, which I paid. Then he told me that they would call and schedule an appt for the subsequent Friday. It's been almost two weeks and they still haven't called me. Thanks Grant Mechanical for cashing my check. And finally, they don't have a voicemail, so I can't leave them a message to complain.... read more

I found Grant Mechanical on Yelp and all the 5 star reviews are no joke. Sam Grant was professional, courteous, knowledgeable and super friendly. I appreciate that he didn't try to upsell us. I asked if I should have the furnace serviced every year and he said that every other is fine. Also, our furnace is old as the hills, but he didn't try to talk us into replacing it. He said we are on borrowed time and that we could replace it, or we could just use it until it dies - which we opted to do. Sam also gave us some pointers on safety which will make me sleep better at night. I definitely recommend Grant Mechanical!!!! read more

With summer temperatures in Redwood City regularly approaching or exceeding 90 degrees (and by regularly, I mean more than once), our house has resembled a sauna as of late. My wife is pregnant, and the importance of central air increased from 'somewhat important' to 'schedule this today or I will murder you.' I asked Grant Mechanical and two other highly-rated local providers to provide an estimate. Sam produced a competitive proposal and also gave me helpful advice on the best system for my family in light of our house, yard layout and upcoming baby. After having a chance to review all of the bids, I sent a note to Sam on Sunday night and asked/begged him to schedule the install as soon as possible. He called me on Monday morning and became my new BFF after telling me he had an unexpected opening the very. next. day. He and his team arrived on time, were super friendly and professional, and completed the install in a single day. What's more, they left our house spotless. I wish I had more hands, so I could give these guys four thumbs up. read more

I still confused about what just happened. They came, told me what is the best way to do it, gave me an estimate, scheduled an appointment, came on time!!!! (again ON TIME!!!), installed it faster then they promised and all these at more that reasonable price. I still don't believe it actually happen (maybe i'm dreaming). Looking back the price to value ratio is amazing. The costumer service of Sam and his crew is absolutely outstanding. Thank you guys for an amazing job new air conditioner works great! read more

Sam is THE MAN! He is responsive, knows what needs to be done, and does it at a reasonable price. He is a straight shooter. He has been taking care of our home HVAC since before we bought our place. When it was time to replace our furnace he laid out the options and didn't try to pressure one way or the other. He says what he will do, and does what he says. We don't plan on working with anyone else as long as we live in this area. If you have HVAC issues call them now. read more

We just had Grant Mechanical do a complete replacement of our 60(!) year old heating system (new furnace, ducts and adding heat to an addition) in the house we recently bought and they were great. Sam came out to give us an estimate and was very knowledgeable and thorough.. He explained everything about what needed to be done and was very meticulous. You could tell he really knew what he was doing. He also did not try to upsell us on things we didn't need like many other companies I talked to and gave us different option so we could figure out what was best for us to do. As we were debating whether to get the work done now, our furnace officially died. Sam and his team were able to get everything up and running within a week (we also had to have asbestos removed so they worked with the asbestos company's schedule). His workers were all very polite and cleanly and they got everything done very quickly. I highly recommend them. read more

Sam Grant at Grant Mechanical really does a fine job. Furnace went out this morning. He was able to fit me in between jobs and had me up and running in 15 minutes. I cannot recommend them highly enough. Thanks Sam read more

Sam Grant installed a new furnace and air conditioning system for us in Menlo Park. The furnace was a replacement but the A/C was entirely new as we hadn't previously had any. Sam is extremely professional. He was on time in coming to evaluate our needs, in sending his estimate and in arriving for the installation. He found a gap in an attic vent during installation and fixed it. We liked the system he recommended as it is far more efficient than what we had and will keep our home at a more steady, consistent temperature (per the temperature we've set on the thermostat). I can highly recommend him and his team. read more

Great place. Smells nice. Friendly customer service. I would recommend anyone to come here. Great deal. - Tyler R. read more

A month ago Sam Grant came by to fix our heater because it wouldn't turn on. I'm not very good with these sorts of things. Anything with fire and gas gives me pause. So I called an expert. I called him on a Wednesday. Same came on time on a Friday. Fixed the pilot which just needed some jiggling. Taught me how to change the filter, how to light the pilot, how to get things going again. He was cool with me video recording the whole session so I would know how to do what he taught me again. All good. I would totally call him again if I have heater problems. Heater has been working strong with no issues for this past month. All GOOD! read more

Woohoo! As good as it gets! Sam is our Christmas miracle. Our 50 year old furnace broke last night - I found him on yelp - he responded to my call same day, had a cancellation this morning in our area and was able to schedule us in. Besides the timing miracle--what could have been turned into a "you really need to replace this old clunker for $3,000" was just a thermostat replacement miracle. A down-to-earth guy, Sam told us like it was, gave us some history on the furnace, chatted about growing up in the area and he was really nice to my cocker spaniel, Birdie. He also doesn't mind if you watch him work and ask a bunch of questions at the same time ( a plus). When the clunker needs replacing we will be calling Sam. A rare find in the specialized repairman world. THANK YOU FURNACE GUY SAM! read more

Am writing this after the second service call from Sam. Each time he has been very responsive and demonstrated a unique combination of deep knowledge to diagnose the problem as well creativity to come up with cheap and effective solutions. The first time we worked with him he came up with a solution to a cold spot in our house which happened to be the baby's nursery for much less than the thousands other contractors wanted to charge or just plain dumb alternatives. For the second issue we didn't hesitate to call him first and he was there within a couple hours. Like everyone has mentioned he is very clear in communicating what you need to do vs optional items. Definitely recommend him. read more

My furnace went out on my unexpectedly on Sunday. Monday morning I was in a panic to find someone who could come out and fix it and the temps have been so cold in the evening and mornings. I left a message at Grant Mechanical, and meanwhile called (literally) 10 other places. Everyone was booked until the following except for 2 which told me they could take me the next day. Sam Grant returned my call within the hour and said, he was done with his current job, and could swing by immediately. Within 15 minutes he was there, and within another 20 minutes my furnace was back up and running. I couldn't be more pleased with his efficiency and professionalism. I will definitely be calling him again for any issues in the future! read more