General Info

For more information about Grundfos
Hot Water Recirculation solutions go to:
moderncomfort.grundfos.us
What is Hot Water Recirculation?
Hot water recirculation means a continuous flow of
hot water in the hot water supply line of your home.
Without a “recirc” system, unused hot water in the
line cools and must be evacuated before hot water
from your hot water heater can reach the desired
faucet. As a result, gallons of water are wasted – and
so is your time.
What are you waiting for?
Convenience and conservation are here now. You
know what it’s like to run the tap and wait for the
shower to heat up before stepping in. Waiting for hot
water is inconvenient and it wastes time and money.
With a hot water recirculation system, the comfort of
hot water in an instant and the elimination of water
waste are a turn of the knob away.
How Hot Water Recirculation Works
Retrofit – Comfort System®
This system uses the cold water supply line as the
“return-line” to the water heater. A circulator pump
is used to create a pressure differential that allows
the cold and cool water in the hot water supply line
to by-pass (at low volume) into the cold supply line
through a patented thermostatically controlled valve
that is mounted under the sink furthest from the
water heater.
New Construction – UP(S) with Return Line
During construction of a new home, a dedicated
return line is installed between the end of the hot
water supply line and the water heater. A circulator
pump is installed at the point where the return line
connects to the hot water tank. The circulator pushes
heated water from the tank through the supply line
and back through the return line.
Many home owners wait up to 60-seconds or more
for hot water to their faucet or shower…
With Grundfos you get hot water without the wait!
1
2
3
2
pipes: Hot water is
always at hand because
it continuously circulates
from the hot water line to
the cold water line and back
to the hot water heater.
THE GRUNDFOS
COMFORT SYSTEM
Retrofit Installation
3
valve: Placed under
the sink farthest from the
hot water heater, the valve
helps regulate the flow
from the hot water line to
the cold water line.
1
pump: The Comfort
System is installed on
your hot water heater to
help pull “recycled” water
back to the hot water
heater to be reheated and
recirculated.
Save water, money and time with
Grundfos Hot Water Recirculation.
The average home wastes over 31 gallons a day
and over 11,000 gallons a year waiting for hot
water. That’s not just wasted water, that’s wasted
money and wasted time. But you don’t have to
take it anymore.
Don’t let 11,461 gallons
go down the drain in vain.
L-UP-SL-023.08-12.indd 2 8/21/2012 10:55:36 AM