Are you waiting for hot water? Introducing the Autohot, an on-demand hot water recirculation pump that can be installed on any plumbing system to eliminate the wait for hot water. Here’s how it works:
Product selection
Determining the correct AutoHot® System for your home is simple. AutoHot® system is easily configurable to match any situation. Follow the steps below, and if you need help, don’t hesitate to contact us.
choose the right system in 3 simple steps
Determine Ideal Pump Size
Identify Install Location
Select Activation Options
Product selection
Determining the correct AutoHot® System for your home is simple. AutoHot® system is easily configurable to match any situation. Follow the steps below, and if you need help, don’t hesitate to contact us.
choose the right system in 3 simple steps
Determine Ideal Pump size
Identify Install Location
Select Activation Options
Determine ideal pump size

The pump size will affect the speed at which the water moves through the pipes. The larger the house or the more lineal feet of piping, the bigger the pump size you would want to be able to get hot water throughout the house quickly.
- 55 Series Pump – Most common size, fits on most homes that are 2200sq ft or smaller, or if you have tankless water heater and less than 150 lineal feet between the heater and the furthest fixture
- 99 Series Pump – For larger homes, or when you have a tankless system with more than 150 lineal feet of pipe between the heater and the furthest fixture.
- 150 Series Pump – Oversized pump used for special applications, contact us for suitability.
identify install location

Are you installing your AutoHot® System on a return line or under the sink at the furthest fixture from the water heater? The install location determines whether you need the “Under Sink Kit (-USK).”
Use a system with “-USK” in the model number if:
- You do not have a dedicated return line
- Retrofitting a house without an existing circulator pump
- You are installing at the end of a “dead-leg” branch line or riser
Do not choose a model number with “-USK” if:
- If you have dedicated return line
- You are not installing under a sink, but are installing by the water heater
- You have an existing circulator pump
select activation options

Select the way in which you will activate the system when you want hot water delivered throughout the house. The AutoHot® System comes standard with one wired stainless steel button, but you may add additional activators and mix and match different activation styles to suit your needs.
- Wired Decora Rocker Switch (White)
- Wired Pushbutton (Chrome)
- Wired Motion Sensor (Ceiling mount or wall recessed versions)
- Wireless Push Button (Up to 1000 ft. range)
- Wireless Motion Sensor (Up to 500 ft. range)




AutoHot® Residential On-Demand Recirculation Systems (Base Models)
Part No. | Image | Description |
---|---|---|
DR000A (Gen 2) | ![]() | Residential AutoHot pump control, hard wired button, no pump included |
DR055A (Gen 2) | ![]() | Residential AutoHot, 55-series pump, hard wired button activator (for dedicated return lines) |
DR055A-USK (Gen 2) | ![]() | Residential AutoHot, 55-series pump, Under Sink Kit, hard wired button activator (for standard plumbing systems) |
DR099A (Gen 2) | ![]() | Residential AutoHot, 99-series pump, hard wired button activator (for dedicated return lines) |
DR099A-USK (Gen 2) | ![]() | Residential AutoHot, 99-series pump, Under Sink Kit, hard wired button activator (for standard plumbing systems) |
DR150A (Gen 2) | ![]() | Residential AutoHot, 150-series pump, hard wired button activator (for dedicated return lines) |
DR150A-USK (Gen 2) | ![]() | Residential AutoHot, 150-series pump, Under Sink Kit, hard wired button activator (for standard plumbing systems) |
Accessories (for homes, order separately)
Part No. | Image | Description |
---|---|---|
WR-16A (only needed for Gen 1 controllers) | ![]() | Wireless receiver: For use with either wireless buttons, wireless motion sensors, or a combination of both. Up to 10 sensors per receiver. Note: This is only needed in Gen 1 Controllers |
WB-S-16A | ![]() | Wireless Button Activator: Works up to 1000 ft away in open air |
WM-S-16A | ![]() | Wireless Motion Sensor Activator: Works up to 500 ft away in open air |
HR-S-17W | ![]() | Hardwired Activation Rocker Switch, White |
HB-S-13A | ![]() | Hardwired Push Button Activator (stainless steel) |
MBKT-19A | ![]() | Pump wall mounting brackets, for use with 55, 99, or 150 series pumps |
HR-S-17LED | ![]() | Hardwired LED lighted indicator rocker switch. Light turns on when hot water is ready, turns off when lines are cool and pump needs to be activated. |
HB-S-20LED | ![]() | Hardwired LED lighted indicator push button. Light turns on when hot water is ready, turns off when lines are cool and pump needs to be activated. |
Commercial / Multifamily Systems
Add Suffixes to the Base Models for Additional Options
Suffix | Description |
---|---|
-USK | Include undersink kit |
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Call Us
(866) 495-2734
Headquarters / Ship from location
Los Angeles, CA
Open Hours
M-F: 7:00am – 3:00pm Pacific Time
info@autohotusa.com