It offers you great benefits of Saving in Time, Space and Cost. Applications: In-Floor Radiant Heating System, Fan Assisted Hydro Heating System, Snow Melting System, Spa Water Re-Heating System, and More         HBO100 (Open Loop System)   Minimum Flow Rate 0.5 GPM Minimum Water Pressure 7 PSI Hot and Cold Water Connections ¾" NPT Heat Source Supply & Return ¾" NPT Space Heating Supply & Return ¾" NPT Expansion Tank 1.8 Gallons Size (W x H x D), lbs 15 x 25 x 10 65 lbs   Order Open Or Closed Loop Heating Boxes Here:   Navien Heating Box Models Open-Loop System Model KD-HBO100 $1,299.00 Closed-Loop System Model KD-HBC100 $2,145.00       HBC100 (Close Loop System)   Minimum Flow Rate 0.5 GPM Minimum Water Pressure 7 PSI Hot and Cold Water Connections ¾" NPT Heat Source Supply & Return ¾" NPT Space Heating Supply & Return ¾" NPT Expansion Tank 1.8 Gallons Size (W x H x D), lbs 15 x 25 x 10 65 lbs

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Or Please Call Us @ 206-730-0149

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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 

Free Energy Savings Estimate 

We ship to the United States and Canada!

Shop Online, Order Securely.

206.730.0149

Providing Radiant Heating & Cooling Systems

Since 1991