Gas Tank Water Heaters

Gas tank water heaters deliver reliable whole-home hot water by storing 30–80 gallons heated by natural gas or propane. Their standout advantage is fast recovery and strong first-hour ratings, so back-to-back showers, laundry, and dishwashing keep flowing. Compared with electric, a gas storage water heater often offers lower operating costs and quicker replenishment.

What to look for: tank capacity (common 40-gallon and 50-gallon), BTU input and recovery rate, Uniform Energy Factor (UEF), and first-hour rating (FHR). Higher BTU input and condensing or ENERGY STAR certified models improve efficiency and hot water output. Choose venting to fit the home: atmospheric draft for simple retrofits, power or direct vent for sidewall runs, concentric kits to reduce penetrations.

Installation considerations include proper gas line sizing, sediment traps, drip pans, expansion tanks where required, T&P relief valve discharge to an approved drain, seismic strapping, and adequate combustion air. Many atmospheric models can operate during power outages; power-vent units require electricity. Safety features such as FVIR technology and spill switches add protection.

Maintenance keeps performance high: flush the tank annually to clear sediment, inspect or replace the anode rod every 3–5 years, test the T&P valve, and set the thermostat to about 120°F for safety and savings. Check joints with leak-detection solution after any work.

Buying and setup checklist:
- Match capacity and FHR to household size and peak demand.
- Confirm venting path and local code requirements.
- Compare 6–12 year warranties and replaceable anode options.
- Consider recirculation compatibility and Wi‑Fi controls for scheduling and vacation mode.
- Hire a licensed plumber if permits or gas work are required.

From compact 40-gallon gas water heaters to high-BTU 50-gallon units, today’s models offer dependable, affordable hot water with straightforward service. Search by fuel type (natural gas or propane), venting style, and efficiency rating to find the best storage tank water heater for your home.