Electric Mini Tanks / Boosters

Water Heater Boosters & Electric Mini Tanks

The Electric Mini Tanks & Water Heater Boosters category features compact water-heating solutions designed to deliver instant hot water at sinks, fixtures, and remote locations while reducing wait time and wasted water. Ideal for kitchens, bathrooms, wet bars, laundry rooms, ADUs, detached structures, and commercial hand-washing stations, these units provide hot water quickly without requiring long pipe runs or full-size tank installations.

Electric mini-tank water heaters store a small reserve of hot water (typically 2–7 gallons) and supply immediate heated water right at the point of use, eliminating cold-water “dead legs” and significantly improving comfort and efficiency. Meanwhile, water-heater boosters are installed inline with existing tank or tankless systems to increase output and flow capacity during peak demand—especially helpful in homes with multiple simultaneous showers or high-usage fixtures.

• 2–7 gallon electric mini tanks for point-of-use hot water.
• Under-sink compact heaters for kitchens, bathrooms, and wet bars.
• Inline water-heater boosters for increased tank or tankless capacity.
• Thermostat-controlled models for adjustable temperature settings.
• Plug-in and hardwired options for installation flexibility.

When selecting a mini-tank or booster, consider fixture type, distance from the main water heater, incoming water temperature, flow rate, electrical availability, and expected concurrent water use. Compare recovery rate, GPM output, tank capacity, installation footprint, temperature range, and warranty details using the Compare tools on this page.

Pro tip: Before ordering, document under-sink clearance, electrical outlet type, pipe configuration, access panels, and expected demand. Provide photos and basic layout notes and we can help you choose the best point-of-use mini tank or booster system for fast, efficient hot-water delivery.