Navien Condensing 98% Tankless Sizing Navien units are sized to meet the number of fixtures that a home owner expects to run simultaneously. Because of the varying ground water temperatures across North America and across seasons, the flow rates will change slightly depending on the region you live, but typically, Navien tankless units can provide either 2 or 3 major fixtures simultaneously without problem on the coldest winter days. Right Model For You Model/City water Temperature CR - 180 CC - 180 CR - 210 CC - 210 CR - 240 CC - 240 Fixture Supply Capability Based on Various Ground Water Temperatures Ground Water Temperature (˚F) CR-240, CR-240(A) CC-240, CC-240(A) CR-210, CR-210(A) CC-210, CC-210(A) CR-180, CR-180(A) CC-180, CC-180(A) 35°F (1.7°C 2 showers & 1 lavatory 2 showers 1 shower & 1 lavatory 40°F (4.4°C) 2 showers & 1 lavatory 2 showers 1 shower & 1 lavatory 45°F (7.2°C) 2 showers & 1 lavatory 2 showers & 1 lavatory 2 showers 50°F (10°C) 2 showers & 1 lavatory 2 showers & 1 lavatory 2 showers 55°F (13°C) 3 showers 3 showers 2 shower & 1 lavatory 60°F (16°C) 3 showers & 1 lavatory 3 showers 2 shower & 1 lavatory 65°F (18°C) 4 showers 3 showers & 1 lavatory 3 showers 70°F (18°C) 4 showers & 1 lavatories 4 showers 3 showers & 1 lavatory Contact: Hooked On Hydronics Inc. 206.730.0149   We Ship to the United States and Canada. *Name: *Email: *Phone: State: Best Time To Call: Question: Note: Fields with an * are required

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Although we specialize in Hydronic Heating and Tankless Water Heaters, we are also licensed plumbers and can provide a complete heating, plumbing, natural gas piping & fire protection package if so desired.

Commercial & Residential Installation

Serving the Seattle, Bellevue and Everett

Washington Areas 

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We ship to the United States and Canada!

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206.730.0149

Providing Radiant Heating & Cooling Systems

Since 1991