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Watts (500800) Instant Hot Water Recirculating System

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Watts (500800) Instant Hot Water Recirculating System

The Watts 500800 Instant Hot Water Recirculating System delivers hot water to any fixture in your home without waiting, using a pump and sensor valve combination that recirculates cooled water back through your cold line. This 115V system includes a built-in 24-hour timer, uses no electricity under the sink, and saves up to 12,000 gallons per year with Thermal By-Pass Technology.
SPECIFICATIONS

Watts 500800 System Overview

Connection Size
3/4 inch
Standard hot water line connector
Power Requirement
115V
Uses less energy than a 25W bulb
Timer Control
24-hour
3-position timer with 10 ft cord
Water Savings
12,000 gal/year
No waiting means no wasted water
Under-Sink Power
None Required
Sensor valve needs no electricity
Return Line
Not Required
Uses existing cold water line
TECHNICAL DETAILS

System Components & Features

Model Number Watts 500800
Pump Location At water heater
Sensor Valve Installation Under sink furthest from heater
Valve Control Thermostatic sensor with Thermal By-Pass Technology
Power Cord 10 ft cord with 115V plug
Maintenance Maintenance-free operation
Operating Principle Pressure differential recirculates cooled hot-line water into cold line
COMPATIBILITY & APPLICATIONS

Where This System Works

The Watts 500800 is designed for standard tank-style hot water heaters in residential and commercial settings. While marketed as compatible with some tankless systems, many tankless water heater manufacturers do not recommend recirculation pumps due to flow rate and cycling issues. Always consult your tankless heater manual before installation. This system is ideal for homes or businesses where multiple fixtures are located far from the water heater, eliminating the wait time and water waste that comes with long pipe runs. The patented sensor valve installs at the furthest fixture without requiring a dedicated return line or under-sink electrical work.

💧 Pro Tip: Program the 24-hour timer to activate only during peak usage hours (mornings and evenings) to maximize energy savings while maintaining instant hot water when you actually need it. The pump uses minimal energy, but smart scheduling makes the Watts 500800 even more efficient.
The Watts 500800 Instant Hot Water Recirculating System delivers hot water to any fixture in your home without waiting, using a pump and sensor valve combination that recirculates cooled water back through your cold line. This 115V system includes a built-in 24-hour timer, uses no electricity under the sink, and saves up to 12,000 gallons per year with Thermal By-Pass Technology.
SPECIFICATIONS

Watts 500800 System Overview

Connection Size
3/4 inch
Standard hot water line connector
Power Requirement
115V
Uses less energy than a 25W bulb
Timer Control
24-hour
3-position timer with 10 ft cord
Water Savings
12,000 gal/year
No waiting means no wasted water
Under-Sink Power
None Required
Sensor valve needs no electricity
Return Line
Not Required
Uses existing cold water line
TECHNICAL DETAILS

System Components & Features

Model Number Watts 500800
Pump Location At water heater
Sensor Valve Installation Under sink furthest from heater
Valve Control Thermostatic sensor with Thermal By-Pass Technology
Power Cord 10 ft cord with 115V plug
Maintenance Maintenance-free operation
Operating Principle Pressure differential recirculates cooled hot-line water into cold line
COMPATIBILITY & APPLICATIONS

Where This System Works

The Watts 500800 is designed for standard tank-style hot water heaters in residential and commercial settings. While marketed as compatible with some tankless systems, many tankless water heater manufacturers do not recommend recirculation pumps due to flow rate and cycling issues. Always consult your tankless heater manual before installation. This system is ideal for homes or businesses where multiple fixtures are located far from the water heater, eliminating the wait time and water waste that comes with long pipe runs. The patented sensor valve installs at the furthest fixture without requiring a dedicated return line or under-sink electrical work.

💧 Pro Tip: Program the 24-hour timer to activate only during peak usage hours (mornings and evenings) to maximize energy savings while maintaining instant hot water when you actually need it. The pump uses minimal energy, but smart scheduling makes the Watts 500800 even more efficient.
$211.43

Original: $604.08

-65%
Watts (500800) Instant Hot Water Recirculating System—

$604.08

$211.43

Description

The Watts 500800 Instant Hot Water Recirculating System delivers hot water to any fixture in your home without waiting, using a pump and sensor valve combination that recirculates cooled water back through your cold line. This 115V system includes a built-in 24-hour timer, uses no electricity under the sink, and saves up to 12,000 gallons per year with Thermal By-Pass Technology.
SPECIFICATIONS

Watts 500800 System Overview

Connection Size
3/4 inch
Standard hot water line connector
Power Requirement
115V
Uses less energy than a 25W bulb
Timer Control
24-hour
3-position timer with 10 ft cord
Water Savings
12,000 gal/year
No waiting means no wasted water
Under-Sink Power
None Required
Sensor valve needs no electricity
Return Line
Not Required
Uses existing cold water line
TECHNICAL DETAILS

System Components & Features

Model Number Watts 500800
Pump Location At water heater
Sensor Valve Installation Under sink furthest from heater
Valve Control Thermostatic sensor with Thermal By-Pass Technology
Power Cord 10 ft cord with 115V plug
Maintenance Maintenance-free operation
Operating Principle Pressure differential recirculates cooled hot-line water into cold line
COMPATIBILITY & APPLICATIONS

Where This System Works

The Watts 500800 is designed for standard tank-style hot water heaters in residential and commercial settings. While marketed as compatible with some tankless systems, many tankless water heater manufacturers do not recommend recirculation pumps due to flow rate and cycling issues. Always consult your tankless heater manual before installation. This system is ideal for homes or businesses where multiple fixtures are located far from the water heater, eliminating the wait time and water waste that comes with long pipe runs. The patented sensor valve installs at the furthest fixture without requiring a dedicated return line or under-sink electrical work.

💧 Pro Tip: Program the 24-hour timer to activate only during peak usage hours (mornings and evenings) to maximize energy savings while maintaining instant hot water when you actually need it. The pump uses minimal energy, but smart scheduling makes the Watts 500800 even more efficient.
Watts (500800) Instant Hot Water Recirculating System | Isopure Water