Watts Radiant is the largest American owned radiant floor heating company in North America and the only company with strong product lines in both hydronic heating and electric radiant heat technology.

• See also:
• Masterformat 2004
• 21 05 19 - Meters and Gages for Fire-Suppression Systems
• 21 05 23 - General-Duty Valves for Water-Based Fire-Suppression Piping
• 22 05 19 - Meters and Gages for Plumbing Piping
• 22 05 23 - General-Duty Valves for Plumbing Piping
• 22 11 13 - Facility Water Distribution Piping
• 22 11 16 - Domestic Water Piping
• 22 40 00 - PLUMBING FIXTURES
• 23 05 19 - Meters and Gages for HVAC Piping
• 23 05 23 - General-Duty Valves for HVAC Piping
• 23 09 33 - Electric and Electronic Control System for HVAC
• 23 21 23 - Hydronic Pumps
• 23 50 00 - CENTRAL HEATING EQUIPMENT
• 23 52 00 - Heating Boilers
• 23 52 16 - Condensing Boilers
• 23 52 19 - Pulse Combustion Boilers
• 23 52 23 - Cast-Iron Boilers
• 23 52 33 - Water-Tube Boilers
• 23 52 39 - Fire-Tube Boilers
• 23 60 00 - CENTRAL COOLING EQUIPMENT
• 23 70 00 - CENTRAL HVAC EQUIPMENT
• 23 80 00 - DECENTRALIZED HVAC EQUIPMENT
• 23 82 00 - Convection Heating and Cooling Units
• 23 82 16 - Air Coils
• 23 82 19 - Fan Coil Units
• 23 82 23 - Unit Ventilators
• 23 82 26 - Induction Units
• 23 82 33 - Convectors
• 23 82 36 - Finned-Tube Radiation Heaters
• 23 82 39 - Unit Heaters
• 23 83 00 - Radiant Heating Units
• Masterformat 1995
• 15105 - Pipes and Tubes
• 15110 - Valves
• 15120 - Piping Specialties
• 15130 - Pumps
• 15140 - Domestic Water Piping
• 15410 - Plumbing Fixtures
• 15510 - Heating Boilers and Accessories
• 15700 - Heating, Ventilating, Air Conditioning Equipment
• 15760 - Terminal Heating and Cooling Units
• 15770 - Floor-Heating & Snow-Melting Equipment
• 15915 - Electric and Electronic Control