//Glossary
Tankless water heater
A water heater that heats water on demand as it flows through a heat exchanger, with no storage tank. It supplies hot water continuously at its rated flow, and its size is chosen by the number of fixtures that may run at once.
What does a tankless install involve?
Gas supply sized for a much larger burner than a tank, venting suited to the unit, a condensate drain on condensing models, and the water connections. Those requirements are why the installed price sits well above a tank swap, and why the job usually involves a permit.
Does a tankless need maintenance?
Yes. Scale builds up inside the heat exchanger, so periodic descaling (a flush) keeps flow and efficiency up. Skipping it is the common cause of early trouble.
//At Done-Rite
Done-Rite installs Navien, Noritz and Rinnai tankless units, $4,000 to $6,000 installed.
Guides that use this term
- › Tankless water heaters, explained: how they work and what the install involves
- › What a $150 water heater tune-up covers, and why sediment is the enemy
- › Do you need a permit to replace a water heater?
- › Navien tankless water heaters: what to know before you choose one
- › Noritz tankless water heaters: what to know before you choose one
- › Rinnai tankless water heaters: what to know before you choose one
- › The garage and the water heater closet: what lives there and what to watch
- › No hot water: the checks to make before you call, and what each result means
- › Repair or replace your water heater? The rule Done-Rite uses
- › Tank vs tankless water heater: $2,300 to $3,200 vs $4,000 to $6,000, and what you get for the step
- › What a water heater costs installed in Orange County
- › Navien vs Noritz vs Rinnai: choosing between the three tankless brands Done-Rite installs
Related terms
//Open 6am to 7pm daily · 24/7 emergency
Trust Done-Rite for all your plumbing needs
Licensed, bonded and insured. Family-owned since 2014. No trip charge, 1-hour response, and 24/7 emergency service.
