Understading the Basics

Tank water heaters store and continuously heat a set amount of water—typically 40–80 gallons—so hot water is ready when you need it.

‍Tankless water heaters, also known as on-demand systems, heat water only as it flows through the unit, providing a virtually endless supply without storing it.

Both types have their place, depending on your household size, usage habits, and energy goals.

Pros & Cons of Each System

Tank Water Heaters:
✔ Lower upfront cost
✔ Simple and familiar technology
✖ Uses more energy to keep water hot 24/7
✖ Limited hot water supply—can run out during heavy use

Tankless Water Heaters:
✔ Energy efficient—only heats water when needed
✔ Space-saving and longer lifespan
✔ Unlimited hot water
✖ Higher initial installation cost
✖ May need upgrades to gas lines or electrical systems

Which One Is Right for You? Call RPI Plumbing & Fire

Choosing between tank and tankless depends on your lifestyle, budget, and home setup. At RPI Plumbing & Fire, we help homeowners across Washington and Oregon find the best water heater solution for their needs—whether it’s a cost-effective tank model or a high-efficiency tankless system.

With decades of experience and a commitment to honest, expert service, RPI is your trusted partner for all things plumbing—including water heater upgrades and emergency replacements.

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