Sandium Heating & Air Conditioning Experts

We had a very positive experience with Sandium. From the beginning of the bid process through the entire installation, all employees of Sandium took the time to answer our questions in a manner we could understand. In addition, the installation crew did a top notch professional job and went the extra mile on the fine details of the installation. Working with Michael and the crew head Hector was a pleasure, and I have already recommended Sandium to a co-worker. Pros: professional, clean, detailed more

Extremely professional. Provided very detailed information and answered all our questions. (which were a lot!) We are very happy with the system they installed and the installation. Great service! more

Sandium Heating and Air Conditioning installed a new furnace, an air conditioner and air ducts in my home in San Jose this month. I rarely write reviews, but I was so pleased with the entire experience that I felt compelled to write this recommendation for anyone else who needs a heater or cooling equipment installed. The pre-installation analyses of my home was very thorough. They were extremely responsive, flexible, professional, but most importantly honest and fair, fair. All the options were explained in detail. I had a really good understanding how the product I will get will work. The system works very efficiently and has increased our comfort significantly. I've already recommended Sandium to my neighbors! more

Sandium did a great job replacing the heater ductwork at our house. You can't believe how much better the heating system works now; we just turn the thermostat to whatever temperature we want and it heats up the whole house in < 10 minutes no matter how cold it is. Also, the air is so clean, not the old stale, mildew smell it used to have. We thought it was funny how we had so many heating companies come by the house and try to sell us a new furnace when all we really needed was our ducts replaced! Also, we just can't say enough good things about the team that did the installation. Very professional, and nice people too! Great company. more

It was 10pm and I was freezing. Called Sandium - they sent a technician within an hour. He diagnosed the problem and explained the options. I was already considering a new furnace and chose a new Trane high efficient model. They installers came out the next morning and replaced the heater. The way this company operates is really impressive. All the technicians I met were clean cut, knowledgable, friendly. I am very happy with the service received. Pros: On time, knowledgable, professional, good follow up more

I read other people's reviews before calling Sandium to take a look at my flaky furnace. They seemed to be well liked so I gave them a call. They were quick to schedule an appointment and showed up exactly on time, the even called me 1/2 and hour before the appointment so I could meet them at my house rather then the standard 4 hour wait window other vendors make you sit through. The technician was super knowledgeable and quickly fixed the problem, he even explained the whole situation to me in terms that I could understand. The cost to make the fix seemed very fair and they were very thorough in documenting everything that they did. I would totally call Sandium again if I have any HVAC issues and totally recommend them more

Sandium recently replaced my furnace, air conditioner, and ductwork. I would like to express my appreciation for a job exceptionally well done. The estimate was detailed and fair, the work was efficient and on time, the advice was factual and professional. The expertise, especially providing a detailed load calculation, duct design for the project, and the professional integrity are impeccable. It is not normally my habit to write such reviews, as I expect that jobs I contract for are well done. This case, however, deserves special recognition. more

A great company! My furnace broke. They had someone out within 1h. The service man was very knowledgeable and courteous (he even put shoe covers on to protect my carpet!). He found the problem rather quickly and fixed it. The next day I received a call from the service manager to check if I my furnace is working properly and if I am happy with the service provided. And YES I am. I will definitely use Sandium again. more

"Quick initial response. Problem was diagnosed quickly. Replacement part arrived and installed in a timely manner. Very good follow-up as well. I will use Sandium again in the future. Thanks." more

Sandium came to my house to troubleshoot a wine cooler. I was surprised how fast and effective there technician was. He found that the controller was bad. I was surprised again when he told me the repairs would be more than a new unit. In the past the technician always want to do the whole repair and charge a lot for it. But Sandium told me it would be more cost effective to buy a new one and explained how i could install it myself. They were very honest. and Finally he did not charge me for the temporary repairs to my cooler to save my wine collection. Thank you Sandium! more

"Sandium is the best contractor I ever did business with. I did numerous home improvement projects over the last years. I always selected very good, reputable companies. Sandium stood out from that pool of excellent service providers. The quality of work was great and the level of service outstanding. Sandium provided a great combination of craftsmanship, product knowledge and professionalism. I will definitely recommend them to family and friends." more

"The guys at Sandium were very professional, did a great job and kept me informed every step of the way. They were very up front about the pricing and were quite competitive compared with our other 3 offers. I would definitely recommend Sandium." more

I've got to tell you, you saved our Christmas! Me and my family are very greatful to you and Sandium. I called your company on the morning of 12/24, as my furnace wasn't working. I thought that we would have to go to find warmth at a friend's house for Christmas, how can you expect to get a new furnace installed on the day before Christmas? I was afraid that I would have to spend $2K for a new furnace, and probably any other company would have made me buy a new furnace. Not Sandium, though, you guys are honest and straightforward. Your technician, Jacob came out and was able to fix the furnace, though it took him almost two hours, it really wasn't easy. Jacob is a very experienced and professional technician. Again, I was ready to pay for a new furnace, but you saved me the expense this time. I'll definitely have you guys replace my furnace in a few months, and thank you again! Mac I. more

"Excellent Job !!!: I wanted to repair my old duct work and was also looking into replacing furnace and A/C.. I started with four quotes. Three were very short - Sandium's very detailed. At the initial consultation I was told that I am buying a finished product (equipment and professional design/installation) and not just some pieces of equipment. At the time I was confused what the estimator was talking about but when they started the work I quickly understood. A team of three excellent professionals worked diligently for several days. The final product: A great comfort system. Even the inspector was impressed! I highly recommend Sandium!" Pros: They kept my house really clean. more

I am very pleased with Sandium. My heater broke. A service man was at my home within 1h of my call. I was told by another contractor that I needed to replace my furnace. Sandium's tech fixed the problem. Instead of paying 2k for a new furnace I paid $130 for the repair. Thank you Sandium for a job well done. Pros: Excellent communication. I appreciated the follow up call from the office more

What a great experience! Courteous, knowledgable, clean, on-time, detail oriented - I can go on and on. I normally don't take the time to write reviews but these guys are worth mentioning. Sandium is my kind of company! Pros: Great value, excellent workmanship more

I had Sandium install a new gas furnace and AC at my house. Nik spent quite a bit of time with me, educating me about various features of both, and what to look for in an installation. I had other companies come to the house also, but none of them made me feel as confident as Sandium that I would be getting a good installation. Once we signed the contract, the installers showed up exactly when they said they would, and they completed the installation exactly when they said they would. They didn't damage anything either during the removal of the old furnace, or the installation of the new units. That might sound like a funny thing to mention, but you'd be surprised at how many contractors do more harm than good, like marring walls, breaking doors, dinging floors, etc. Sandium's installers were very careful and everything was completely cleaned up after they left. Sandium won't be the lowest estimate that you get, but they also won't be the highest. But the quality of their work makes them worth the cost and a great deal. I would definitely recommend them. About a month after the installation, the AC's drainage line needed an adjustment. This happened at 6 o'clock on a Friday night during a summer heat wave. Even at that time, it only took one of their guys about a half hour to show up and take care of it. Of course there was no charge for it, but what impressed me the most was how quickly they were able to come and take care of the problem. Another thing worth mentioning is that after the installation, when I had the City Building Inspector do his inspection, he mentioned that the installation was better than most that he has seen. more

I had my new heating and cooling system installed by Sandium. I am very happy with the result. We worked with several contractors over the years - not one was even close to the level of professionalism, quality and service Sandium offers. I highly recommend doing business with Sanidum. more

We were very satisfied with every aspect of the project. Very professional, very detail oriented, very friendly and knowledgable. We strongly recommend Sandium. Pros: Great company to do business with more

Sandium efficiently took care of our HVAC system problems. We appreciated the prompt, friendly, professional service and will certainly recommend the company to our friends. more