Rinnai RE Series RE199iN Indoor Tankless Water Heater, 199,000 BTU, Natural Gas

The Rinnai RE199iN is an indoor non-condensing tankless water heater for natural gas, modulating from 10,400 to 199,000 BTU and delivering up to 9.8 GPM. A 0.82 UEF and low 0.4 GPM activation flow make it a solid match for multi-fixture households.

The unit vents through a compact 3 in./5 in. concentric system and plugs into a standard 120 V outlet with its roughly 5 ft cord. Standard 3/4 in. NPT gas and water connections keep installation familiar, and wall mounting frees floor space in closets, utility rooms and basements.

An integrated controller handles temperature from 98°F to 140°F, with up to 185°F possible through an optional controller. Adding the Control-R module brings Wi-Fi monitoring, scheduling and alerts. A cleanable inlet filter supports flushing in hard water, and operation runs around 54 dB. It is mobile home approved and ultra-low NOx.

Highlights

• 10,400 to 199,000 BTU modulating burner

• Up to 9.8 GPM with 0.4 GPM activation flow

• 0.82 UEF

• 3 in./5 in. concentric venting, 120 V plug-in power

• Cleanable inlet water filter

• AHRI certified, mobile home approved, ultra-low NOx

Specifications

In the box

• Integrated temperature controller

• Power cord, approx. 5 ft

Good to know

• Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.