Tankless vs tank water heater: which is right for your home?
Tankless heaters cost more upfront but can cut energy bills by 20–30%. We break down the numbers so you can decide what makes sense for your home.
Mike Hernandez Licensed Master Plumber 7 min read
How they work
A tank water heater heats water continuously in a storage tank and keeps it hot at all times. A tankless heater only heats water when you turn on the tap.
Upfront cost
Tank heaters typically cost $800-$1,500 installed. Tankless units run $1,500-$3,500 depending on whether you need new gas lines or electrical upgrades.
Running cost
Tankless heaters use 24-34% less energy than tank heaters for homes that use under 41 gallons per day.
Lifespan
Tank heaters last 8-12 years. Tankless units last 20+ years with regular descaling.
The honest verdict
If you are replacing a failed tank unit and budget is tight, get another tank. If you are planning a remodel and want to upgrade at the same time, tankless usually works out.
