A tankless water heater can be a good fit for an older home, but it often needs upgrades first. Gas line size, venting, electrical service, and how much hot water the household uses all affect whether tankless makes sense.
How Tankless Heaters Work
Instead of keeping a tank of water hot all day, a tankless heater warms water only when you turn on a hot faucet. Water passes over a powerful burner or electric element and comes out hot. Because there is no tank to run dry, hot water can keep flowing as long as the unit keeps up with demand.
Possible Benefits
- Takes up much less space than a tank
- Can lower energy use since it does not keep stored water hot
- Often lasts longer than a standard tank heater
- No large tank that can rust through and flood a basement
Challenges in Older Homes
Many older homes were built with gas lines sized for a tank heater and a furnace. A gas tankless unit may need a larger gas line. It also needs proper venting, which may be different from the old chimney setup. Electric models can need much more power than older electrical panels provide.
Hard water can also be an issue. Minerals can build up inside the heater, so many units need regular flushing or a water treatment system.
Is It Right for You?
Tankless may suit a smaller household or a home with steady, moderate hot water use. A large family running several showers at once may need a bigger unit or more than one. Upfront costs are usually higher than replacing a tank with a tank.
If your current heater is failing and you are weighing options, having the old heater looked at first can show whether a repair buys you time. To plan an upgrade, you can compare options with our plumbers at (833) 603-1840.