Danisi Energy
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Danisi Energy
Danisi Energy is a true family owned and operated full service HVAC and Fuel delivery company servicing the Suffolk County area on Long Island, Danisi Energy has been in business for over 60 years. We are the only true full service Heating, Ventilation, Air-Conditioning Company in the area. When we say Full Service we Mean Truly FULL SERVICE.

Installation, Repair, Service, Maintenance, on ALL types of Heating, Ventilation, and Air Conditioning systems. We also Deliver Home Heating Oil, Kero (Kerosene) and Diesel for both your residential homes and commercial buildings. When it comes to service, we don't tell you to call the A/C "guy", or the heating "guy", or a plumber, or an electrician; we handle it ALL as full service company should be.
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Danisi Energy is a true family owned and operated full service HVAC and Fuel delivery company servicing the Suffolk County area on Long Island, Danisi Energy has been in business for over 60 years.

We are the only true full service Heating, Ventilation, Air-Conditioning Company in the area, we don't tell you to call the "A/C guy", or the "heating guy", or the "plumber", or "electrician"; we handle it ALL which is what a full service company should be.We are also a family-owned and operated.
We know that budgets are tight, and a new HVAC system is a significant investment. Because we value your business, we're happy to offer promotions and special offers to help offset the cost of your furnace, boiler, heating system or air conditioner repair, installation, or service appointment. To take advantage of special offers, rebates, contests and promotions on high-efficiency air conditioning systems and furnaces.
At Danisi Energy, we are proud to deliver quality fuel oil, heating, and air conditioning service to Suffolk County, Long Island. Located in Medford, NY, we are a family owned and operated, local, affordable fuel company that is committed to customer satisfaction. If you live within our service area and would like to learn more about all we offer for your home comfort, please call us at 631-732-6666 or contact us!
Field Marketers / Lead Generators needed! Danisi Energy is looking for outgoing and energetic individuals to represent our company in local Home Depots. Our marketers receive ongoing, training and the. Normal Hours: 7:00AM to 5:00PM Monday-Friday or as necessary, Nights and Weekends Function: The HVAC Sales Department will conduct sales acquisition, proj.
Here is a list of the most searched for Air Conditioning services, all of which we can help you with. There are multiple considerations that go into an HVAC dealer's estimate or final bill for installing a new energy-efficient air conditioner in your home. Below are a few of the considerations that may contribute to the cost of a new air conditioner for in your home.
Reviews (9)
Thomas Chambers
Thomas Chambers
Jun 04, 2021
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Critical: Professionalism, Value
Charged $160 for an estimated job. Then explained a $400 test was needed and still mite not be able to fix. Called an honest mechanic got it fixed for $150. This company is a total rip off.
Service: AC maintenance
Kellie Fastrnu
Kellie Fastrnu
May 31, 2021
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Positive: Professionalism, Responsiveness
Professional, courteous, efficient. Thank You!
Service: Install heating system
Thomas Colon
Thomas Colon
May 23, 2019
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In October I was having issues with my boiler, so of course I called on Danisi. 10 years ago my boiler broke down and I called on Danisi. They were quick to respond to my call. It turned out that I needed a new boiler. They were able to install a new boiler the next day. So last month when I was having issues with my boiler, I called on Danisi. Jay, Mike and Chris were very knowledgeable and helped my family and I out in our time of need. I could never praise them enough for taking the time to explain everything they were doing and not take advantage of us. A major thumbs up for Jay, Mike and Chris
Vic M.
Vic M.
May 20, 2019
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STAY AWAY FROM THIS COMPANY! Chris the owner is a liar, wont return your call, and wont honor your contact. Do yourself a favor and use someone else!
Charles Rutman
Charles Rutman
May 16, 2019
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Jason A from Danisi Energy came to us on Saturday for an inspection. He was fantastic. Thorough. Professional. Polite. Friendly. He took his time to look at everything and explained things to us in a way we could really understand!! It was an excellent experience and instills confidence that we have engaged the right company for this service need.
Arthur C.
Arthur C.
Jan 22, 2019
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Thank god for Danisi Energy. My heat went out when it was 6 degrees outside. I called the company I have a contract with and they told me couldn't get to me until the next day. I called Danisi, they were there in less than 4 hours and fixed the problem. Needless to say, I am canceling my contract with that Big Oil company I was dealing with and moving it over to Danisi! Thanks Danisi fuel for getting me out of a jam.
Michael G.
Michael G.
Nov 30, 2018
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Used Danisi for a bathroom instillation. From the manager(Chris) to the installer(James) everything was done professionally and on schedule. All in all a 5 Star experience.
M. M.
M. M.
Aug 22, 2018
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NEVER USE THIS COMPANY!!!

For 4 months I have been trying to get my home fixed from the water damage by Danisi Energy. I tried to do the right thing by going through Home Depot services and they chose Danisi Energy to replace my central air conditioner. They company had 3 different crews, for a total of 4 times to do a simple replacement.

Crew one came for initial install, multiple issues
1. Did not pitch the air handler so water began to over flow and you can hear water tapping on my ceiling the next day.
2. Claimed he never heard or saw of a Nest thermostat but during the estimate, I was
Tracy F.
Tracy F.
May 02, 2018
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If only I could award them no stars I definitely would.
They installed my new central AC & were horrendous from the start. They initially installed ductwork in the center of my living room, cut up my floors, didn't install the filters & had to return to do so after I called to complain that the house wasn't cooling very well. One of the workers stepped through my ceiling & they weren't going to repair the damage!! They even tormented my dogs; who were crated during the installation. I could go on, but I just don't have that much time, sorry.
Avoid these guys at