OSI Comfort Specialists

OSI Comfort Specialists is hands down the best heating oil supplier in Oceanside, NY. Their team is reliable, professional, and always delivers on time, especially during the colder months when dependable heating oil delivery on Long Island is critical. The customer service is excellent, and they make the entire process smooth and stress-free. If you’re looking for a trusted heating oil company in Oceanside, New York that offers competitive pricing, fast delivery, and dependable service, I highly recommend OSI Comfort Specialists. They truly stand out among local heating oil providers in Nassau County.

298 W Henrietta ave we’ve been having a leak in our boiler and today 03/03/26 Osi sent out A couple of technicians to service and repair. Extremely satisfied in the work that was done., Very professional and courteous. boilers can be very overwhelming to the average person the technicians make sure I understood the work that was performed and the function of what they’re supposed to do, made me feel very comfortable my sister and I thank you guys I’m glad to be part of a family and we could depend upon again thank you very much

Firstly I have always known OSI to be great in delivery of oil , competitive prices and outstanding and friendly services. This past summer they came to the rescue when others would not for an air conditioning repair during a heatwave. during this past winter freeze Michael helped us get out of a frozen pipe situation that kept my business operating . Again OSI is a famiky run business that cares!!!!

Been a loyal customer for years and I do not believe we ever had an issue. However, what a horrible recent experience. I had called for a service for AC, after discussion they mentioned they needed a second cc on file because i did not have a cc for the AC, only heating. They even said "we will not send someone out until a cc is on file." I thought it was strange and I did not like the price or the policy, so i said something like "let me see in the am." I promptly then got another plumber to come by at a fraction of the cost. However, they apparently sent one of their plumbers immediately after (and without my permission or authorizations - and certainly without a CC on file) to do apparently redundant work. This is not my primary home so the tenant did not know it was not authorized. The

Long time customers for 2 generations. Always responsive for any servicing needs. Recently replaced 30+ year old boiler with a System 2000. OSI was able to rearrange their service schedule and two days later they were on site to replace our 3 zone system in a single day. I made the mistake of switching to a large company for a lower oil delivery price which also came along with poor servicing. The personalized and professional service of OSI cannot be beat.