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DG Heating & Air Conditioning Inc

Founded 2009 • With Angi since July 2011

If you’re looking for reliable, quality heating and cooling services in San Jose, contact DG Heating & Air Conditioning. They are an HVAC company whose goal is to provide top-notch customer service each and every time. From heating and cooling repairs and installations to whole-home air filtration, they treat each customer as if they were their only customer. Some other common services they provide include duct installation and removal, ductless mini-split installations, new construction services, and commercial HVAC services. For over 10 years, they have been building long-term relationships with their customers by providing honest and friendly customer service and look forward to helping you with all of your home and business HVAC needs. They are a Better Business Bureau Accredited Business and offer free in-person estimates, senior and veteran discounts, and knowledgeable technicians. Reach out to them today to schedule your next service!


Free Estimates
Eco-Friendly Accreditations
Trade License Number
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Verified Reviews


(5) Verified Reviews

Showing 1-5 of 5 reviews
Angela B.
They were Great!
Description of Work
DG Heating & Air Conditioning is simply the best! They seem to come from a time when customer service was the most important part of the job. After the previous heating company misdiagnosed the problem and I became somewhat suspicious, I called a trusted source and they recommended D & G Heating and Air Conditioning. Instead of needing a new furnace, I only needed a new gas valve and fan belt and a thorough cleaning at a cost of $465. That's quite difference from the thousands it would have cost for a new unit, as recommended previously. Eddie, was on time, courteous, clean, quiet and very efficient. He knew his job well and went right to the problem. Angela
heating & air conditioning/hvac
Mazen L.
Description of Work
heating & air conditioning/hvac
Eric G.
Description of Work
heating & air conditioning/hvac
Erik J.
Frankly I was not impressed with the overall experience. To get an estimate I had to make multiple calls between the office and John (owner). I spoke to John over the phone and explained what I was looking to do and then for him to come by my house to provide a more detailed estimate I had to call back to the office to speak to the manager there who handles John's calendar. Not a big deal as I can understand calendar management. On the day of the estimate though, John arrived (he was on time), but quickly walked through the house, was somewhat dismissive of my questions and then rushed out. He then gave me his card and asked me to email him with what we had talked about and he would reply with estimates. In effect, he took no notes of what the job would entail and then asked me to itemize the discussion and service options. I received his and quot;estimateand quot; 3 days later where he essentially just replied in line with prices for the items I listed in my email. No formal estimate, or proposal... just a few numbers he added in my email to him. So I cannot review D and H based on their work, they may do good work and this is what I learned from other reviews, but I just did not have a good experience or feeling about the estimate process, so I went with another provider.
Description of Work
Asked for a quote to replace a mid-century furnace and to install 2 new ducts/vents to other rooms
heating & air conditioning/hvac
Simon F.
Pros: Very friendly, and good at explaining how both the air handler and heat pump work together to both heat and cool our house. In spite of delays on the part of the general contractor and other subcontractors, they were prompt and courteous during the installation of the ceiling ductwork, registers and HVAC appliances (air handler in our tiny attic, heat pump outside in backyard). We really liked working with their lead technician Patrick, who was on top of everything onsite. Cons: The owners John and Mike didn't take time to discuss the best make and models of heat pump systems to best suit our house and usage patterns. Indeed, it was a struggle at times to get them to send us the model and serial numbers for the HVAC appliances, but when installation was complete, they finally handed over the manuals that came with the appliances. In addition, we needed to get invoice info for the air handler and heat pump into order to obtain energy rebates and tax credits; this was stipulated in our contract, too. Oddly enough, DG seemed to get cagey when we requested this info, sending only an energy efficiency certificate for the appliances. I guess they might not have wanted to see what they were getting as a subcontractor fee, but such and quot;secrecyand quot; seemed irrelevant to us (we already know that subs would get a portion, that's how they're paid, of course). They finished installation in mid-March 2010, and everything ran smoothly until December of that year. Suddenly, it seemed that the air conditioning (cold air) would start running, when we were expecting heating instead; heating would eventually return, but this seemed worrisome since it was winter. We contacted them, and it took them nearly 2 weeks to respond to us. It turned out to be expected behavior: that during especially cold (sub-freezing) temperatures the heat pump will temporarily pump heat (literally) into itself (thus cooling the house briefly) to warm its coils in order to function efficiently. However, it would've been helpful to have learned this sooner with a prompter response from DG.
Description of Work
DG installed an electrical heat pump based HVAC system in our house, as part of a major remodeling project in our house. We hadn't any sort of centralized heating beforehand.
heating & air conditioning/hvac



1040 Commercial St Unit 104

San Jose, CA 95112

Other Information

Services offered

Residential & Light Commercial Heating & Air Conditioning Equipment Sales, New Construction, Remodels, Custom Sheet Metal & Copper Fabrication & Installation, Galvanized Metal Gutters & Downspouts.

Services not offered

Duct Cleaning.

Payment options

American Express


DG Heating & Air Conditioning Inc is currently rated 4.7 overall out of 5.

DG Heating & Air Conditioning Inc is open:

Monday: 7:30 AM - 4:30 PM

Tuesday: 7:30 AM - 4:30 PM

Wednesday: 7:30 AM - 4:30 PM

Thursday: 7:30 AM - 4:30 PM

Friday: 7:30 AM - 4:30 PM

DG Heating & Air Conditioning Inc accepts the following forms of payment: Visa, MasterCard, Check, American Express, Discover, Financing

Yes, DG Heating & Air Conditioning Inc offers free project estimates.

No, DG Heating & Air Conditioning Inc does not offer eco-friendly accreditations.

Yes, DG Heating & Air Conditioning Inc offers warranties.

DG Heating & Air Conditioning Inc offers the following services: Residential & Light Commercial Heating & Air Conditioning Equipment Sales, New Construction, Remodels, Custom Sheet Metal & Copper Fabrication & Installation, Galvanized Metal Gutters & Downspouts.

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Comfort Energy Inc

Angi Certified

Comfort Energy Inc

Message from the Owner/ Founder: “As a third generation heating and air technician and retired 20 year veteran of fire and public safety, I wanted to create a service company that you could count on for its integrity and professionalism. When our service technicians arrive at your home, we want you to feel the same level of confidence and trust you get from a firefighter arriving at your home to help when you call 911. Our service technicians are professional, courteous, and well trained. I am comfortable allowing them into the homes of my families and friends who are firefighters, police officers and the public. Thank you for the opportunity to service your comfort needs and believing in our company. We look forward to a continued long relationship. Warm regards, Harry Abbott” Comfort Energy Inc is a full service provider of quality air conditioning and heating repair and installation. . Locally owned and operated, with over 30 years of experience. We are proud members of the Nexstar network of contractors. We specialize in helping homeowners make informed decisions to best meet your family's comfort needs. Spanish and Japanese spoken.  

Since 1962, we have been committed to living up to our company slogan every day – The Home of Old Fashioned Service. That means reliability, expert advice, quality work and great service for our customers – and a 100% guarantee. Our entire team can’t wait to show you the difference great service can make for your heating, cooling, electrical, solar and above all, “comfort” needs. We sub-contract with licensed plumbers when necessary.  

Call (408) 293-47-17 or Email - AAA Furnace. Since 1957 AAA Furnace & Air Conditioning Co. has been a Duct Cleaning, Heating & an Air Conditioning Contractor in San Jose, CA 95125. We have over 30 of the most experienced HVAC Technicians and Cleaning Specialists on staff, with over 40 hours of training annually. Our truck mounted Duct Cleaning PowerVac – is the industry standard for the best duct cleaning results. Your home is protected by floor coverings and our technicians always wear shoe covers. Additional DBAs - A A A Furnace and Air Conditioning, AAA Furnace & Air Conditioning, A A A Furnace, Rando AAA HVAC Inc, Additional phone - (408) 264-0585.