Tankless Water Heating
Commercial-grade units with the industry's best warranty.

Learn About Tankless Tankless Truths™
Condensing

Rinnai’s super high-efficiency models offer sleek design, maximum output and an array of features ideal for the hot water demands of large homes.

RX Models

RXP Models

RUS Models

RUCS Models

Non-Condensing

For small- to medium-sized new homes or remodels, Rinnai’s high-efficiency models are affordable, compact units you can count on.

RE Model Series

REP Model Series

V Model Series

Accessories

Rinnai Central™ mobile app

Smart-Circ™ Recirculation

Venting & Accessories
Home Heating
Condensing Boilers

Rinnai Condensing Boilers deliver more efficient home heating than traditional boilers, while also providing domestic hot water.

I-SERIES+

Boiler Venting & Accessories
Direct Vent Heater

Rinnai Direct Vent Heaters use modulating technology to create energy-efficient warmth for the whole home.

Direct Vent Heater Accessories
Vent-Free Fan Convectors

Rinnai Vent-Free Convectors push heat to the farthest reaches of the room, evenly warming larger spaces and maximizing cost-savings.
Heat Pump Companion

The Rinnai Heat Pump Companion improves indoor comfort and energy efficiency while boosting the performance of your heat pump during peak demand.
Electric Water Heating
New at Rinnai

Underwood Plumbing & Septic

This contractor has the knowledge and training through Rinnai to expertly sell, install and service Rinnai products. They're committed to ensuring the best experience and overall customer satisfaction for you!

Hours of Operation

Sunday:	Closed
Monday:	8:00 AM - 5:00 PM
Tuesday:	8:00 AM - 5:00 PM
Wednesday:	8:00 AM - 5:00 PM
Thursday:	8:00 AM - 5:00 PM
Friday:	8:00 AM - 5:00 PM
Saturday:	Closed

This contractor provides support for:

Product Offerings

Water Heating

Boiler

Commercial Water Heating

Energy Source

Natural Gas

Propane

Electric