Natural Gas Price in Arizona (2025)
Natural gas in Arizona costs $1.79 per therm on average for homes ($18.58 per Mcf, 2025) – 21% above the US average and the 41st cheapest of 51 states and DC. The average customer's bill works out to about $46 a month over the year.
Source: EIA annual residential price (2025) and residential use per customer (2024). Latest monthly figure: $2.54/therm in July 2026 (monthly prices swing with the season).
Gas bill in Arizona by usage
| Monthly use | Arizona | At US average |
|---|---|---|
| 30 therms (29 ccf) | $53.75 | $44.38 |
| 60 therms (58 ccf) | $107.50 | $88.76 |
| 100 therms (96 ccf) | $179.17 | $147.93 |
| 150 therms (145 ccf) | $268.76 | $221.89 |
Average price includes delivery and fixed charges spread over all gas sold. Roughly: 30 therms is a summer month with a gas water heater and stove; 100–150 therms is a cold-climate winter month with gas heat.
Price trend
Arizona's average residential price fell from $20.47 per Mcf in 2024 to $18.58 in 2025 (−9.2%). Nationally it went from $14.50 to $15.34.
Gas vs electricity in Arizona
One therm of gas holds the same energy as 29.3 kWh of electricity. At Arizona's 15.38¢/kWh, that much electricity costs $4.51 versus $1.79 for the gas. Gas furnaces turn 80–97% of that into heat, while a heat pump delivers 2–3 times the electricity it uses. Run your own numbers with the heat pump vs furnace calculator, and see electricity cost in Arizona.
How Arizona compares
- Washington: $1.70/therm, about $96/month
- Vermont: $1.74/therm, about $108/month
- New Hampshire: $1.79/therm, about $92/month
- Maine: $1.83/therm, about $109/month
- US average: $1.48/therm, about $76/month.
Other Mountain states: Idaho ($0.74), Montana ($0.87), New Mexico ($0.95), Utah ($0.98), Colorado ($1.08), Wyoming ($1.13), Nevada ($1.27).
Frequently asked questions
How much is natural gas per therm in Arizona?
Arizona residential customers paid an average of $1.79 per therm in 2025 ($18.58 per thousand cubic feet), including delivery charges. That is 21% above the US average of $1.48 and ranks 41st cheapest of 51.
What is the average gas bill in Arizona?
The average Arizona gas customer used about 29.6 Mcf (307 therms) a year in 2024, which works out to about $46 a month at 2025 prices, averaged over the year. Winter bills are much higher than summer bills.
Has natural gas gone up in Arizona?
The average price fell from $20.47 per Mcf in 2024 to $18.58 in 2025 (−9.2%).
Is gas or electric heat cheaper in Arizona?
Per unit of energy, gas at $1.79/therm compares with $4.51 for the same energy from electricity at 15.38¢/kWh. A heat pump delivers 2–3 units of heat per unit of electricity, so it can still beat gas – compare with your numbers in the heat pump vs furnace calculator.
Sources: EIA natural gas prices; EIA residential deliveries; EIA number of consumers.