How the Chilipepper On-Demand Hot Water Recirculating System Works

How does the Chilipepper On-Demand Hot Water Recirculating System Bring Hot Water So Fast?

The motor of the pump is very high power. At 1/3 horsepower, it is one of the fastest pumps on the market - especially in its price class. The Chilipepper can pump approximately 2-1/2 to 3 gallons per minute in a typical residental plumbing system. With standard 1/2 inch pipe, the Chilipepper can pump about 50 feet in only 20 seconds!

How the Chilipepper Hot Water Demand System Pump Works and Diagram of water heater and hot water demand system

A Great Home Improvement and Water Conservation Product!!

Installing a Chilipepper creates a loop whereby the pump brings the hot water and sends the cooled off hot water from the line back to the water heater (through the cold water line) to be reheated. Doing this allows the hot water to be pumped to the fixture without wasting any of it down the drain. Since the pump operates only when activated, it does not waste any energy filling the pipes with hot water when it is not needed.

State of the Art Electronics

The Chilipepper is a small powerful micro-processor controlled pump. The computer monitors the temperatures, timing, sensitivity adjustment input, and the control wire inputs and directs the pump what to do and when.


When the electronic control circuitry detects an increase in the water temperature inside the pump (adjustable from 3 degrees to 12 degrees F), it shuts the pump off. 


When the circuitry detects a temperature over 96 degrees F it locks out the pump until the water in the pump cools back down to below 96 degrees F. 


To start the Chilipepper, a momentary contact between the control terminals is required.  This can be provided by the push button included with each Chilipepper or with the remote key-fob transmitters. Other third party devices can also be used as long as they are a momentary contact closure, such as a relay.


The Chilipepper has the most advanced state of the art electronic circuitry in the industry with the following features:

  • Adjustable automatic shut off when the hot water reaches the pump.

  • Notification sounds to communicate with the user. For example, if the water is already at 96 degrees F or above, the unit will sound two beeps, to let the user know that the water is already hot.

  • If there is a problem (short) in the control wires of the push button, the unit will sound one beep every few seconds to let the user know of the problem.

  • If the built-in moisture detector senses water around the unit where it shouldn't be, the unit will sound a continual beeping alert.

  • If hot water doesn't arrive within 4 minutes, the pump shuts off. This is a safety feature that protects against the pump running too long and burning up if there is a water heater failure.

Get your hot water faster!

The Chilipepper has a very powerful motor for its size.  The Chilipepper pumps water at 2-1/2 to 3 gallons per minute in a typical residential setting.  Many fixtures are now low flow meaning they restrict flow to as little as 1/2 gallons per minute.  In many cases the Chilipepper can cut the time it takes to get hot water from 1/3 to 1/2.

Save Water!

Since no water gets run down the drain while you wait for hot water, you save significant amounts of water every time you use the Chilipepper. Studies have demonstrated that a typical 4 member household can save over 14,000 gallons of water per year.

Save energy!

If you leave your hot water fixture running and go do something else while you wait for it, and you come back to find it is hot, then any hot water you've run down the drain was wasting energy!  And the energy to heat the water is far more expensive than the water itself.

Improve the performance of your dishwasher!

The number one cause of poor dishwasher performance is water that is not hot enough on the first cycle.  By using the Chilipepper before you start your dishwasher you will get full temperature hot water to your dishwasher on the first cycle...and hot water is much better at dissolving detergent and cleaning dishes than cold water.

Reduced sewage output

The water that doesn't get run down the drain doesn't flow into the sewer or septic system either.  Often your sewer charges are based on your water by saving water your are saving money from your sewage charges...or reducing the load on your septic system.

Reduce greenhouse gas emissions

By reducing the amount of water you consume, the amount of water that has to be treated and pumped to you is reduced.  Pumping and treating the water requires lots of energy...generating that energy pumps greenhouse gasses into our atmosphere.  So by reducing the amount of water (and sewage treatment) you use, you help reduce the emissions of greenhouse gases and other pollutants as well.


You will feel good every time you use your Chilipepper!