Average Heating Bill in Delaware → New Castle County
$477/mo
$2,860/year
$1.43/sq ft (oil heat, 2,000 sq ft home)
↑ Oil prices are up 3.9% over the past 6 weeks, which affects current heating bills. View price trends.
| Fuel | Local Price | Cost/MMBTU | Annual Cost | Monthly (Heating) |
|---|---|---|---|---|
| Natural Gas | $1.56/therm | $17 | $1,067 | $178 |
| Heat Pump Cheapest | $0.17/kWh | $16 | $1,027 | $171 |
| Heating Oil | $5.29/gallon | $45 | $2,860 | $477 |
| Electric Baseboard | $0.17/kWh | $48 | $3,080 | $513 |
Cheapest option for this area
Heat Pump
$1,027/year estimated — saving $1,833/year vs heating oil
Average monthly heating costs during the October–March season for a 2,000 sq ft home in New Castle County:
Based on a 2,000 sq ft home with 85% oil furnace efficiency, COP 3.0 heat pump, NOAA 30-year normal heating degree days (4,546 HDD for New Castle County), and current EIA state-average energy rates. Oil prices reflect local median from 4 tracked suppliers.
Data updated 2026-06-02.
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If you're staying with oil heat, compare local suppliers to find the best price. The spread in New Castle County can be $0.50–$1.00/gallon.
Median: $5.29/gal · 4 suppliers reporting prices
Compare New Castle County Suppliers →