DG Heating & Air Conditioning

John and his crew were awesome, professional, knowledgable, and very efficient, couldn't have asked for better service any where, great experience, I would recommend them to anyone! Services: Thermostat installation, HVAC duct & vent installation, Heating system installation, Install AC, Install thermostat

Above excellent service and caring! We are at University Gardens which has specialized needs for townhouse. We originally had a unit going out, they were very accommodating in help us limp along 4 an extra 4 years till we were able to replace our A/C-heating unit. When we were ready, the were out right away to give an estimate, the estimate was TOTALLY REASONABLE and extremely fair!

They got us in right away! The crew were professional and on point! Just to let you know as potential customers, the other bids were ridiculous because DG knew our building and the nuisances of our complex. They were completely prepped and ready. The unit was replaced and working the same day. I cannot say enough good things about this company! Thank for from both of us!

I had called DG Heating & air conditioning for my mothers home in San Jose. I left a message on a sunday, The owner returned me call with in 20min. John informed me on what steps to take, on Monday he had Eddie The service Tech come out to fix the heater with in 10 minutes, He found the problem and fixed the heater. The service was great. Thank You DG Heating & Air conditioning for Five star service. Thank you Eddie

I met with ~10 companies before settling on DG Heating. They are professional and thorough. They replaced my ductwork in the time quoted and will come back anytime to adjust the dampers. I had a small issue with condensation and they came the next day to fix it. There was some miscommunication between my husband and I resulting in overpayment and DG contacted us immediately to send a check. Honest, professional, quality work.

The professionals from DG helped us with a complex AC installation for a condo during the peak season of summer for a competitive price. There were complications with delays due to tenants moving out and they had to figure out the right solution to route everything. During all this I had great communication with the team, they were extremely patient, we looked at several low noise equipment options.

Then they managed to squeeze me in into their busy schedule, the crew came out to plan everything and then came back again for the install. That took a day but everything went smoothly as they worked orderly, quietly and cleanly, patched up all the sheet rock and made sure that I was happy. Highly recommended.

Appreciated the prompt response and service by Richard and team. Back office was pleasant to work with. Competitive price and they deal with the best HVAC system - Trane and American Standard. Install team (Alberto, Giovanni and Jose)were prompt, friendly, responsive and professional. Completed move of furnace to Attic on time and cleanly. No drama. Very much appreciated.

Pleased from beginning to end - from co-owner John Gardner's initial visit and clear discussion of best ways to replace furnace and install central air for main part of houser plus mini-duct for house addition - through to the professionalism of team lead Roy and the crew in delivering the work - and John's stopping in to check on progress and answer any questions. Loving the cool air on the 90+days. Thank you!

They really very professional and honest! really very good company! Very trustworthy Services: Thermostat repair, HVAC repair

Decided 2021 was the year to install AC in our house (already had central heat). I contacted 3 companies and decided on DG and so glad we did. The installation team was very respectful, friendly, and arrived on time. They completed the job in one day as planned. The customer service from start to finish was great too. Since it was cold on the day of installation, the office has set up a date in a warmer month to set up time to charge the AC unit. Highly recommend.

I used DG Heating and Air Conditioning (San Jose CA) for my recent install of air conditioning at my home near Redwood City. I got three other quotes for the work, and DG was actually the best price. I was very satisfied with the work performed and the professionalism of the crew. I was astounded at the amount of work that the crew of three accomplished in just one day.

They did a good job of cleanup and the system works great. This was a job to add an air conditioner to my central heating furnace. Working in a cramped dark attic is tough, and they had to move some heavy things around. I give them five stars and a good recommendation. The system passed duct pressure test and inspection by San Mateo County on first try. Now I have cool air in my home at the touch of the controls of my existing thermostat. Ready for a hot summer, thanks guys!

DG Heating & AC recently installed a split AC unit for my home office. They did a phenomenal job on the installation, showed up on time, completed the work exactly as we discussed & left the work site immaculate. The owner also personally inspected the site mid way through the job and called me the same afternoon to confirm that things went well. It's nice to do business with a company that is so customer centric and professional. Huge thank you!

They did an install for me some years ago. Installers were professional and timely. Quote was competitive. Had one small issue which the fixed promptly. Recently had a warranty issue on the hardware and they fixed it very quickly. Would use them again if I had the need and recommend them as a consideration for anyone in the market for a install.

John and Mike are consummate professionals who won't look to upsell you on anything. Their team is speedy, thorough, and focused on delivering value to the customer. We couldn't be more happy with the HVAC unit they helped install on an older house. They've always been respectful and prompt in their responses. Can't recommend them enough!

I called to have a service appointment scheduled due to an issue with our fan not staying on while the AC was running. After I had the appointment scheduled I got a call a couple hours later from Montie their service manager who was wondering if I used a Nest thermostat.

Very thorough in inspection and finding solution to my problem. Also gave me information on maintaining my system. So helpful!

I was very impressed with DG. They fit me in on short notice to fix my heater which kept cutting off unexpectedly. Monte was clearly very experienced and knowledgable and took the time to explain to me what he was doing and my options. He even gave me tips on future maintenance I could do myself to keep it running without incurring additional costs for a professional.

Excellent service. Montie Singh came out to service the heating system my company has and he completed it in no more than 45min. He thoroughly explained the concerned, the work performed and effectively completed it.

I had DG come out today and install a complete new heat/air system. When I made the appointment, they were able to install within a weeks time. They showed up promptly on time and they were respectful of my home and garage. Thanks to Roy, Sergio, Everett, and Chris for the beautiful install and for showing me everything about it. Bring on summer now, I've got A/C finally!