Oil furnace installation cost
Oil-fired forced-air furnaces are predominantly a Northeast US story. About 5.5 million US homes still heat with oil, almost all in New England, New York, and Pennsylvania. Pricing is higher than gas across the board: equipment, fuel, and tank logistics.
Why oil costs more
$3,200–$5,500
Oil furnaces use cast-iron heat exchangers and pressure-atomizing burners. Heavier and more complex than gas equivalents.
$1,500–$3,000
275-gallon basement tank is standard. Above-ground exterior or underground tanks cost more. Tank life: 20-30 years.
$200–$400/yr
Annual cleaning is essentially mandatory. Nozzle replacement, filter swap, and combustion analysis. Skipping it shortens life dramatically.
Operating cost
Heating oil in 2026 averages $3.20 to $4.50 a gallon. A typical Northeast home uses 700 to 1,000 gallons a year for heat.
| Annual oil use | At $3.20/gal | At $3.80/gal | At $4.50/gal |
|---|---|---|---|
| 600 gal (small home) | $1,920 | $2,280 | $2,700 |
| 800 gal (avg home) | $2,560 | $3,040 | $3,600 |
| 1,000 gal (large) | $3,200 | $3,800 | $4,500 |
Oil prices fluctuate more than natural gas. The 2022 spike pushed home heating oil above $5/gal in much of the Northeast. Pre-buy contracts and budget plans help smooth volatility.
Converting from oil to gas
If natural gas is on your street, conversion almost always pays back
Total conversion: $5,500 to $12,000 all-in. New gas furnace ($3,500 to $7,000), gas line tap and trench ($500 to $2,500), oil tank removal ($300 to $3,000), basement cleanup. Annual savings: $900 to $1,800. Payback: 5 to 8 years.
If gas is not available, the next decision is oil vs heat pump. Modern cold-climate heat pumps work to -5°F and qualify for HEEHRA rebates of $2,000 to $10,000 in many Northeast states. See full comparison →
Tank considerations
Above-ground basement tank
Most common. 275-gallon double-bottom steel tank. New tank: $1,500 to $2,200 installed. Lasts 20-30 years. Inspect annually for rust streaks and weeping seams.
Above-ground exterior tank
Outdoor tank with weather hood. New: $1,800 to $2,800 installed. Shorter life (15-25 years) due to temperature swings. Subject to local zoning and setback rules.
Underground tank (rare in new installs)
Largely phased out. Most insurers will not write new policies on homes with active underground oil tanks because of leak liability. Existing tanks: removal $1,500 to $3,500 plus possible soil remediation.