Read the plate. Get the specs.

Homeowners in moderate to warm climates with an unconditioned space like a garage, basement, or utility room that stays above 40°F year-round.

• Watch for: Homes in very cold climates without a heated space for installation, or tight closet installations without adequate airflow. Not a good fit if the surrounding space needs to stay warm, since the unit pulls heat from the air. Renters or short-term owners may not recoup the higher upfront cost.
• Dedicated 240V, 30A circuit. No gas line needed.

Households with natural gas service that want continuous hot water and long-term energy savings.

• Watch for: Homes without existing gas service due to the cost of running a gas line. Very high simultaneous demand homes (multiple showers plus appliances at once) unless multiple units or a recirculation system are installed. Not cost-effective for low-usage households where payback is too slow.
• Requires a standard 120V outlet for the electronic controls and fan. Some units draw up to 150W during operation.
• Condensing models can vent with Schedule 40 PVC, CPVC, or polypropylene. Horizontal or vertical venting supported. Maximum vent run varies by model, typically 40-100 feet equivalent.

Budget-conscious homeowners with existing gas service who need a straightforward replacement.

• Watch for: Energy-conscious buyers focused on long-term savings, as the low efficiency makes operating costs higher over the unit's life. Not ideal for large households that frequently run out of hot water or homes pursuing electrification. The DOE 2029 standards will significantly limit new gas tank options.
• None for standing pilot models. Electronic ignition models require a 120V outlet.
• Atmospheric models use Type B double-wall metal vent pipe with natural draft. Power-vent and direct-vent models use PVC or metal with a fan-assisted exhaust. Proper draft and combustion air supply required per NFPA 54/ANSI Z223.1.