Propane Prices in Connecticut (Week of Oct 19, 2026)
Residential propane in Connecticut averaged $4.23 a gallon for the week of Oct 19, 2026 (+1.3% in two weeks) – 57% above the US average and the 37th lowest of 38 states EIA surveys.
Source: EIA Heating Oil and Propane Update (weekly, excluding taxes). Updated automatically each week from October to March.
Cost to fill a tank in Connecticut
| Delivery | Gallons | Cost at $4.23/gal |
|---|---|---|
| 20 lb grill cylinder (≈4.7 gal) | 4.7 | $19.86 |
| 100 lb cylinder (≈23.6 gal) | 23.6 | $99.73 |
| 500-gallon tank, 20% → 80% | 300 | $1,267.80 |
| 1,000-gallon tank, 20% → 80% | 600 | $2,535.60 |
Before sales tax, delivery minimums or small-delivery fees, which vary by dealer.
Cheapest way to heat in Connecticut right now
| Heating system | Cost per million BTU of heat |
|---|---|
| Natural gas furnace (95%) | $17.08 |
| Heat pump (HSPF2 9, COP ≈2.6) | $27.23 |
| Propane furnace (90%) | $51.34 |
| Heating oil furnace (85%) | $52.27 |
| Electric baseboard (COP 1) | $70.81 |
Using Connecticut's current averages for propane, heating oil, natural gas and electricity (24.16¢/kWh). Prices for natural gas in Connecticut and electricity in Connecticut. See also heating oil prices in Connecticut.
Nearby states
- Massachusetts: $3.66/gal
- Maine: $3.71/gal
- New Hampshire: $3.84/gal
- Vermont: $3.88/gal
- Rhode Island: $4.17/gal
Frequently asked questions
What is the price of propane in Connecticut this week?
$4.23 per gallon on average for homes in the week of Oct 19, 2026, before taxes (EIA survey). That is 57% above the US average of $2.69, and +1.3% since Oct 5, 2026.
How much does it cost to heat with propane in Connecticut?
At $4.23 a gallon, 500 gallons over a winter costs about $2,113 before tax. Actual use depends on the house, insulation and winter – check your past deliveries and enter them in the calculator.
Is propane cheaper than other heat in Connecticut?
Per million BTU of heat, propane costs about $51.34 in Connecticut this week. The cheapest option at current state averages is natural gas furnace (95%) at $17.08.
Source: EIA weekly residential propane prices. Heat comparison uses typical efficiencies and EIA state averages.