Great River Fuel Oil Co.
    Don't Shiver, Call Great River
(631) 581-2539


       We are proud to say that as our company has grown over the last 30 years we have not lost our personal touch with the customers and pride ourselves on our "Old Fashioned" way of operating our establishment.  Many of our loyal long standing customers have stayed with us over the years due to the personal service we offer to each and every one of them.          

Our Efficiency Report Card

Our technician will provide you with your efficiency report based upon the completion of your equipment tune-up. Your efficiency report card will measure and rate efficiency factors such as smoke, draft, carbon dioxide, and combustion efficiency.

1. Smoke
Smoke is a measurement of the flue gas density at the rear of your heating unit. This measures your heating emissions. Special fuel additives reduce smoke emissions, helps your system burn more efficiently.
2. Draft
Measured in “inches of water column,” the negative indicates airflow away from the heating unit or up to the chimney.
3. Carbon Dioxide
The complete burning of fuel oil is measured by percent of the flue gasses. The reading us affected by the amount of the air introduced at the burner. CO2 reading also indicates how efficiently your burner uses fuel.
4. Combustion Efficiency
This measures how efficiently your system burns the heating oil you purchase. At the point that yearly combustion efficiency tests turn around or below 78%, some measures need to be taken to improve your overall efficiency, thereby reducing your annual consumption of fuel oil. The measurement can be very valuable. Older, less advance heating systems are typically less efficient – which means you buy more fuel (up to 20%) in any given heating season.