DG Heating & Air Conditioning
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Review Highlights
“John, the owner, came to inspect the work and had his people cover the hole and replace the vent covers for free.” in 88 reviews
“I was researching options and contacted a family friend (Monte Singh) who was a former employee of DG heating.” in 20 reviews
“This was not an easy or common task, but Mike and Louis came to inspect the situation in November 2018.” in 28 reviews
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About the Business
Business owner information
![Photo of Michael D.](https://s3-media0.fl.yelpcdn.com/buphoto/6ls8yvxX8Ep9PaRtwlbR1Q/90s.jpg)
Michael D.
The weather in San Jose can be unpredictable. The temperature and comfort of your home shouldn't be. We are DG Heating & Air Conditioning, a San Jose heating and AC service company that offers solutions for both homes and businesses. From small repairs to major installations, our trained, educated, and experienced technicians can handle any problem you encounter with your HVAC system. In addition to heating and AC services, we also provide indoor air quality services, duct removal and replacement, ductless mini-split installations, and solar services. We provide custom HVAC solutions for any size project and will guide you through the process from start to finish!
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Ask the Community
Q:
Hello, I bought an air conditioner online, it is a mini-split. now I need to find some professional people to help me install it in my room. Can you give me a free quote?
A:
If you would please call our office at 408-201-9411 Leticia will be able to set up a time for John to come out and take a look at the type of install you are looking for. We can then provide you with a quote… more
Michael D., Business Owner1 person found this helpful
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Overall rating
327 reviews
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- Janice D.Cupertino, CA03May 9, 2011
I called Perfect Climate, who put in my Furnace and Air Conditioning to get new filters. Apparently they are out of business and my call was forwarded to DG Heating and Air Conditioning. One of the owners, Mike returned my call and asked if he could help me. I told him I needed new filters and he said that he would order them for me and deliver them to my home. That was great service. I will now call them for any of my furnace or air conditioning needs. Mike is really a nice guy and will go out of his way to help you.
I called to schedule an appointment to have my Heating and Air Conditioning serviced. No problem getting an appointment immediately.
Monte arrived on time and immediately impressed me by putting on shoe covers before coming in. He said "I tell my guys, treat your customer's house like you would your own" - and proved it. Came in and got it done quickly and at a good price. I'd definitely call them again.
Every technician should be trained like Montie. He is very knowledgeable, very courteous and trustworthy. He explained everything that he was doing. I have never had my Heating and Air serviced like Montie did. Great work.
If you are in need of a Heating or Air Conditioning or any service please give them a call at 1-978-1411. John Gardner, Cell ph. #: 1-408-314-1411, Mike D'Angelo Cell ph. # 1-408-205-6811 or Montie Singh, Cell ph. # 408-510-1852. Great Guys and you will enjoy dealing with them.
Jan D.Helpful 1Thanks 0Love this 2Oh no 0 - Bartley C.San Jose, CA04Jul 17, 2024
This is the second time I have used DG, both times I was impressed. Brandon arrived right in the middle of the time window and was professional and courteous. Our AC had not been blowing as cold as we expected. He asked a few questions and said he had an idea and checked a few things. I had a sense at what it might cost but when he was finished he gave me the bill which was a little below what I expected and a reasonable price. I chose them because a friend with rental properties uses them and has been happy. I will use them again next time and ask for Brandon.
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Michael D.
Jul 18, 2024
Thank you so much for the kind words. I will be sure to pass them on to Brandon! Thank you Marian
- Ron H.Sunnyvale, CA1313Apr 16, 2024Updated review
This will supplement my previous five star rating for DG. I'll keep it simple:
If anyone tells you there are no guarantees in life, walk away from them because they are WRONG !! After servicing my DG installed wall furnace, there remained some annoying glitches. The thermostat seemed to be malfunctioning. But after three visits to my house to try to fix it, BRANDON was sent out and had the problem solved in short order. Ask for him if you do business with DG. I would add a sixth star after dealing with Brandon. My furnace is operating perfectly now. All this after a year and a half after installing the furnace and no extra charge. There are guarantees in life. DG proves it.Helpful 0Thanks 0Love this 0Oh no 0Business owner information
Michael D.
Nov 21, 2022
Ron, glad we could help you out. Let us know if you need anything!
Mar 7, 2024Previous reviewI want to award FIVE STARS to DG Heating & Air Conditioning. 1 1/2 yrs or so ago they rescued me from a previous awful installation by another company. It was a terrible install and almost set my house on fire. DG installed a new unit but didn't stop there. They upgraded all the incorrectly or ailing ancillary components of the system for a fair price and the new unit performed well. But when the thermostat was declared faulty this past month by a PG&E tech, I called DG to come out again to inspect the system They did more than that: changed the thermostat, found other defective parts on the main unit, and everything they did seemed to be right, all for NO CHARGE on warranty.
A few days later the unit was not performing and Chance (their tech) came back out again and found a loose wire in the new thermostat, which he quickly replaced. The system immediately began running properly. I can't say enough good things about DG, their sheduler, and Chance. Don't waste your money and time on others. Call DG and have it done correctly and also rest assured they will back up their work quickly and professionally. We should have more companies like DG. Honest, effective, competent, and ethical.Nov 19, 2022Previous reviewThese guys recently installed a through the wall furnace unit which seemed to work perfectly. A few days later some problems developed in the wall surround the new furnace. DG immediately responded by removing the unit they had installed and thoroughly inspected all the possible sources of the problem, including the flue through the ceiling and then re-installed the unit. The conclusion: the problem was not with the furnace but with an inferior wall structure surrounding the furnace. They were professional and acted quickly to seek a remedy and did not charge me a cent to inspect and then return the unit. I give them five stars because they certainly deserve them. They put my mind (and my wallet) at ease and prove that there are guarantees in life.
- Nancy R.Menlo Park, CA014Jul 9, 2024Updated review
We just had our first maintenance service done on our heat pump HVAC. Brandon was great! He let us follow him around so we could ask questions and learn more about our system. He was very thorough in his answers and explained what he was doing as he did the maintenance check on our air handler and compressor.
Marian was also very helpful in explaining how the service contract works, answering my questions and making an appointment for Brandon to come out and take care of us.
DG Heating and Air Conditioning has great employees and does really good work. We highly recommend them.Helpful 1Thanks 1Love this 0Oh no 0Business owner information
Michael D.
Oct 2, 2023
Nancy, we're glad to hear you're happy with the installation. If there is anything we can do please let us know.
Oct 2, 2023Previous reviewA neighbor had used DG Heating and Air Conditioning to install a heat pump HVAC system including mini-splits in her upstairs. She was so impressed with the work DG did and with how some issues were handled after installation, that I decided to go with them. (The issues were due to a faulty mini split, not the installation process.) I had met John when my neighbor was interviewing three different companies and both of us liked his direct, no fuss approach. As John was out for a while we worked with Kyle for our estimate. He was very honest, knowledgable and easy to communicate with.
We signed the contract and in very little time the crew was out to do the work. Alberto, Jorge, Oscar and Jeo were great. The first thing Alberto did was to go over the job with us, then they put down clean cloth runners to protect the floors where they were going to be working. All four worked together as a great team removing our old gas furnace, getting the wiring and piping installed under the house, capping off the gas and then installing the outside compressor and the air handler in the old gas furnace closet. Our registers and two air return vents were taped around the edges to help with passing the HERS test. I also appreciated the discussion as to where to put the new thermostat so as to get the best whole house results from the HVAC. They tested the equipment and did a final cleanup so our home looked like no one had been there doing all this work. Before leaving Oscar went over what they had done which was greatly appreciated.
Raelene in the office has been very responsive to all my emails and the contract was very detailed so that we knew exactly what was to be done. This company is a great one to work with and I wouldn't hesitate to recommend them to family and friends. - Kambiz R.San Jose, CA01Jul 1, 2024
I have been using this company both for my business and personal for many years, impeccable service every time .
I been in bussines almost 25 years so have used my share of other companies before I was lucky enough to get them simply the best most professional I have ever dealt with an absolute 5 starHelpful 0Thanks 0Love this 0Oh no 0Business owner information
Michael D.
Jul 2, 2024
Hi Kambiz! Thank you very much for your review. I really appreciate your business. Thank you Marian
- Kimberly C.San Lorenzo, CA168244Mar 4, 2024
This rating is from the Order of Malta in Menlo Park. Our heater went down, and we called these guys to come out. Not only did they take care of us right away, and solve our problem, they even had a tech named Chance, who stopped by on his own, to see how the heater was working. THAT customer service right speaks volumes! Thank you, Marian, for having your amazing crew come out to help us.
We will be coming back! Very honest and reliable.Helpful 0Thanks 0Love this 0Oh no 0Business owner information
Michael D.
Mar 4, 2024
Kimberly, thank you for the kind words. I'll definitely pass along your comments to Chance and Marian. Please let us know if there is anything else we can do for you.
- Halfdan H.San Jose, CA2522May 24, 2024
Brandon did a fantastic job troubleshooting, optimizing, and servicing our AC - Heaters. He's a really great person to interact with as well.
Helpful 0Thanks 0Love this 0Oh no 0 - Edna M.Santa Clara, CA012Jun 10, 2024Updated review
Annual maintenance on home heating and air conditioning performed by Brandon. Explained process thoroughly. He really knows his stuff, and I felt very comfortable with him and his work. He is well trained and knowledgeable just like all of the other DG technicians who have serviced my system over the years. They are a stellar company - would not use any other hvac company! Very reasonable pricing and value for money.
Helpful 0Thanks 0Love this 0Oh no 0Sep 14, 2010Previous reviewYelp reviews led me to choose DG Heating & Air Conditioning to replace my air conditioning system - and I am so glad they did! I concur with all of the positive comments posted in the reviews. John, one of the owners, was great - immediately responsive, completely knowledgeable, committed to providing the best system to meet my family's needs, and very professional. No high power sales pitches. John came to my house two to three times per day during the installation to make sure everything was being done properly and to check in with me in case I had questions or concerns. The staff doing the installation - particularly Justin and Patrick - were superb - respectful, knowledgeable, patient, committed to excellence in their work, clean, and available to answer questions and educate me. And the cost was extremely reasonable - I was pleasantly surprised. And, the new system works amazingly - greatly surpasses my hopes and expectations. Wonderful company - I recommend them highly.
- Robin G.Santa Clara, CA4116Dec 15, 2023
I had an amazing experience with DG Heating and Air Conditioning. Eddie was phenomenal in helping with my broken thermostat. I don't realize it was still under warranty and Eddie went out of his way to get the replacement thermostat on order and saved me a lot of money and time. He was very professional and knowledgeable. I would 100% recommend DG and will hire them in future for my HVAC needs.
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Michael D.
Dec 15, 2023
Thank you for the kind words. I'll definitely let Eddie know and please let us know if there is anything else we can do for you.
- Dee O.San Jose, CA05Mar 2, 2024
Each Spring I have my A/C serviced. The Tech arrived exactly on time. Very polite and answered all my questions. He inspected the outside unit as well as the furnace air filter, etc.. The quality of work is outstanding. After 4 years of trying, I have finally found the best heating and airconditioning company in the San Jose area. In the Fall, I have my furnace inspected and serviced. Again, another great job. Over the years, I have used other companies, but no more! Once I discovered DG Heating & Air Conditioning my "worries and dissatisfactions" were over. You honestly get more than what you pay for.
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Michael D.
Mar 2, 2024
Dee,
Thank you for taking the time to write us a review! I will pass your compliments on to the technician. Please don't hesitate to reach out if there is anything else we can do for you.
Mike D'Angelo - W K.Palo Alto, CA04Jan 23, 2024
It was time to replace my 70 year old ducts and 30 year old gas furnace. I favored a change to a ducted heat pump system and talked to 6 contractors before I found the right one - DG. Besides the estimator Kyle, the owners -John and Mike - personally came out to assess the job and configure the system. Their price was in the middle of my quotes and I liked their choice of equipment more than any of the others.The installers, Alberto and his crew, took great pride in their work and did a wonderful job. They consulted me when decisions needed to be made and threw in a few nice extras like replacing some 20 year old duct runs and adding a line from my electrical panel in case I have a heat pump water heater in my future. Even the inspector was impressed with the quality of their work. We passed the HERS duct leak test with flying colors. I highly recommend them.
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Michael D.
Jan 24, 2024
Wayne, thank you so much for the kind words. I'll definitely pass along your input to everyone. Please let us know if there is anything else we can do for you.
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