Natural Gas Bill Calculator
At $1.38/therm (EIA, Nov 2026), a typical 37-therm month costs about $51.06 before the fixed fee. Gas is the smallest utility bill for most Texas homes — until a cold snap hits.
Your natural gas bill
How Texas natural gas bills work
A therm is about 100 cubic feet of gas. Your bill is therms used × the price per therm, plus a fixed monthly customer charge that you pay even in months when the heater never runs.
Unlike electricity, you cannot shop for a gas provider in Texas. Atmos Energy serves North Texas, CenterPoint serves Houston and the east/south, Texas Gas Service serves Austin and the central/west, and CPS Energy serves San Antonio — one provider per area, with rates set by regulators.
Gas use is seasonal. A Texas home might burn 80+ therms in a cold January and under 15 in July, when only the water heater and stove use gas. Budget on the yearly average, not the cheapest month.
If your winter gas bill spikes, the cheapest fixes are usually the simplest: lower the thermostat a degree or two, seal drafty doors and windows, and insulate exposed pipes — all cheaper than a new furnace.
Frequently asked questions
What is a therm?
A therm is a unit of heat energy — about 100 cubic feet of natural gas, or roughly 100,000 BTU. Your gas meter measures cubic feet and the bill converts it to therms.
Why is my gas bill higher in winter?
Heating is the big gas user in most Texas homes. Cold months can triple therms compared with summer, when only the water heater and stove run. The price per therm can also rise in winter.
Can I choose a cheaper gas company?
No — Texas gas is delivered by one regulated utility per area (Atmos, CenterPoint, Texas Gas Service, or CPS Energy). You can lower the bill by using less, not by switching providers.
Is $1.38 a therm a good price?
It is the EIA statewide figure for November 2026. CenterPoint residential customers typically see $0.90–$1.20/therm before fees, so your all-in price depends on the fixed fee and taxes on your bill.
More gas tools
Total Monthly Utility Bill
Add gas to electric, water, and internet for the full monthly picture.
Visit →Texas Utility Comparison
Which gas company serves your area — Atmos, CenterPoint, Texas Gas Service, or CPS Energy.
Visit →Internal links only — no sponsorship.
Save on heating
Google Nest Learning Thermostat (4th Gen) with Temperature Sensor
Smart thermostat — set schedules and save on heating and cooling without thinking about it.
4.4 stars (636 ratings, Amazon, Nov 2026)
View on Amazon →Duck Brand Foam Pipe Insulation Covers (6-pack, 6 ft total)
Foam sleeves for exposed hot-water pipes — less heat lost on the way to the tap.
Amazon's Best Seller in Pipe Insulation (4,000+ bought in past month)
View on Amazon →As an Amazon Associate I earn from qualifying purchases. Prices are set by Amazon — check the product page for the current price.