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

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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 Plus

Boiler Venting & Accessories
Direct Vent Furnace

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

Direct Vent Furnace 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.
Hydronic Air Handler

The Rinnai Hydronic Air Handler System easily integrates with select tankless water heaters or boilers to deliver energy-efficient warmth.
Electric Water Heating
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Q175CN Q-Series Model Series

Condensing Boiler View Energy Guide

3/5 stars from 1 reviews

Rinnai Q175CN natural gas condensing boiler offers unparalleled comfort and efficiency along with ease of installation and serviceability making it ideal for use in homes or light commercial applications, providing both heat and domestic hot water.

Warranty

35,000 BTU / (10.3 kW) (minimum)
175,000 BTU / (51.3 kW) (maximum)

Specifications Documentation Warrantyⁱ

Specifications

Manufacturer Trade Model Number - U.S.	Q175CN
Product Depth	15.2 in / (385 mm)
Product Height	31.4 in / (795 mm)
Product Width	39.4 in / (1000 mm)
Product Weight	196 lb / (89 kg)
Gas Type	Natural Gas
Residential ENERGY STAR®	Yes
Domestic Hot Water Flow Rate (Maximum)	6.2 GPM / (23.5 l/min)
SCAQMD Approved	Ultra Low NOx
Central Heating Capacity	175,000 BTU / (51.3 kW)