Furnace and Boiler Installation and Service in Nassau County, Five Towns and Rockaway, NY
OSI Comfort Specialists gives you comfort you can count on with our high-efficiency heating systems
Did you know that about half of your home’s energy costs in the winter come from heating your home?A new, high-efficiency furnace or boiler from OSI Comfort Specialists can help cut your energy costs while keeping your home warm and comfortable no matter how often the polar vortex pays you a visit. You’ll get a return on your investment from the moment you first use your new, high-efficiency boiler or furnace thanks to those lower energy costs and reduced risk of breakdowns and repairs.
We sell and install top-quality, high-efficiency boilers and furnaces from Energy Kinetics, Peerless, and Burnham, for both heating oil and natural gas homes. For homes that use heating oil, you can also get dependable heating oil delivery from OSI Comfort Specialists. With our Bioheat® Fuel, you’ll get the heating oil that’s better for the environment, thanks to dramatically reduced emissions, and better for your heating system as it reduces wear and tear on your boiler or furnace.
All of our furnace and boiler installation, maintenance and repair services are done by our in-house team of skilled and experienced service technicians as well as licensed and certified master electricians and plumbers.
Comfort you can count on from our service department
At OSI Comfort Specialists, we believe in keeping your home’s furnace or boiler maintained and repaired so that it runs well for as long as possible. That’s why we provide expert furnace and boiler maintenance and repair services.
Regular boiler and furnace maintenance are essential to keeping your home’s heating system running at peak performance.
OSI Comfort Specialists fuel delivery customers also get 24/7 emergency service for no-heat emergency furnace or boiler repairs. That’s why we offer annual maintenance tune-ups with each OSI furnace or boiler service plan, which can also protect you from large repair bills with coverage for many parts and labor costs.

Should I have the boiler or furnace repaired or should I replace it?
Even with regular boiler and furnace maintenance, nothing lasts forever. If the time ever comes that you do need a new boiler or furnace installation, we’ll give you an honest and competitive estimate for new equipment.
These are some signs that your home’s heating system may need replacement:
Repair costs. It’s tempting to want to get one more heating season out of your furnace or boiler. But eventually, repairs are no longer cost-effective. A good rule to follow is that if repair costs are more than half of what replacement would be, replacing your heating system is a better move in the long run.
Soaring heating costs. If your heating costs are going up, and it’s not in alignment with fuel costs or usage, your furnace or boiler has lost efficiency. This can happen over time or if the heating system has not been maintained properly. When you replace an inefficient boiler or furnace, you get a return on your investment from the day it’s installed because some heating systems can have efficiencies of more than 95%. With regular maintenance tune-ups, your new heating system will run at its best efficiency for years to come.
Future plans. If you are planning to retire or move in the next few years, a new heating system may be the best move. A new heating system is attractive for potential homebuyers. If retirement is coming soon, you’ll have a high-efficiency heating system in place as you transition to a fixed income.