Product Description

MRCOOL® Indoor Gas Tankless Water Heater

Unlike traditional water heaters, the MRCOOL® Tankless Water Heater provides continuous hot water to up to four bathrooms and multiple appliances at the same time. With a high flow rate and a 92% Uniform Energy Factor, it is highly efficient while remaining environmentally friendly.

The compact, space-saving heater is built with stainless steel, corrosion-resistant engineering that offers four times the corrosion resistance of copper and is lead free. An electronic thermostatic control and self-adapting temperature regulation keep shower temperatures steady, and a large touchscreen display provides helpful operating information to you and your plumber. Freeze protection is built in.

Available for natural gas or liquid propane. Backed by a 15-year heat exchanger warranty, a 5-year parts warranty, and a 5-year labor warranty.

Must be installed by a licensed professional (plumbing and gas).

Features

  • 199,000 BTU input; up to 8.45 GPM
  • 92% UEF
  • Stainless steel heat exchanger, lead free
  • Self-adapting temperature regulation; touchscreen display
  • Freeze protection
  • Meets SCAQMD standards

Specifications

Models MHWH199NCNU (natural gas), MHWH199NCLU (liquid propane)
Input 199,000 BTU
Max Flow 8.45 GPM
Flow @ 35°F / 45°F / 55°F / 65°F Rise 11.12 / 8.45 / 6.8 / 5.8 GPM
Efficiency 92% UEF
Temperature Range 95°F to 140°F
Water Pressure 7-140 PSI
Connections 3/4" NPT water in/out; 3/4" NPT gas inlet
Venting 2" or 3" or concentric
Power 120V, 60 Hz; 150 W (+114 W with anti-freeze module on)
Ignition Electric
Installation Indoor; not mobile home compatible
Dimensions (W x H x D) 17.33 x 26.78 x 11.03 in
Net / Shipping Weight 68.34 / 74 lbs
Certifications CSA
Warranty 15-year heat exchanger, 5-year parts, 5-year labor

Documentation

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