D.A.D.S OIL is a family owned and operated oil dealer with over 40 years of experience in offering home heating oil, as well as professional boiler, tank and central air installation services. Not only do we offer competitive prices, but we also provide seasonal delivery 7 days a week, giving convenient services for those of you with busy schedules

D.A.D.S Oil is a privately owned and operated home heating oil company operating out of Mount Sinai, NY and serving Suffolk and Nassau Counties. With over 30 years of experience we pride ourselves in customer service and reliability. Please call today or visit our website for pricing, service information, or any other questions you may have. Please note that pricing is subject to change due to market volatility.

We do annual tuneups on all your heating equipment. We also service and install of hot water heaters, oil tanks , burners and boilers-gas fired as well as oil fired equipmentAll steel tanks made by Granby are subject to a rigorous testing process, to ensure longevity and containment of all oil. With a 25-year warranty, and a multi-million dollar insurance policy on all tanks, you can have peace of mind with this manufacturer's tank installed at your residence or business. Click the logo to learn more.Roth double-wall tanks are designed for high level environmental protection.

They are rust free, inside and out. All tanks are pressure tested and made without welds, to ensure no seams can rupture. Roth tanks are backed by a 30-year warranty that includes up to $2M for property damages caused by spills. Click the logo to learn more.