Our calculations are based on 3 factors:
- Heating Degree Day — Measures how much energy is needed to heat a home based on the outside temperature. The degree day changes daily, therefore the number of days between deliveries will change.
- Past Usage & Tank Size — We use data from previous deliveries to determine your usage habits. Someone who works from home will have different usage than someone who lowers the thermostat while away.
- Insulation & Efficiency — Every house is different. Older homes with older furnaces will use more fuel than a neighbor with updated equipment.

