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The Hot Water Lobster
Instant Hot Water Valve
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"Always in hot water!"
SAVE WATER! At ONLY $179.95, the eco friendly Hot Water Lobster Instant Hot Water Valve provides
faster hot water which
saves water, saves energy and saves time.  How long does it take for hot water
to get to your faucet or shower?  A lot of precious water is wasted down the drain while waiting for hot
water.  Even worse is the cost to heat the cold replacement water, which enters your house at the cold
ground temperature.

HOW IT WORKS! When the water in your hot water pipe and the Hot Water Lobster control valve cools
below the user adjustable temperature (77-140 F. degrees), the thermal materials within the
Water Lobster
control valve contract and silently open the valve.  Thermal convection within your hot
water tank (differential of pressure between the top of the tank and the bottom of the tank) naturally
circulates the cooled water through your existing cold water pipes and back to    the hot water tank for
reheating.  Your existing hot water tank now uses less energy reheating the warm water instead of
cold ground temperature water.  When fresh hot water enters your hot water pipe and reaches the
Water Lobster
control valve, the valve automatically closes.  This maintains hot water at the control
valve without wasting water or wasting energy.  Turn on your faucet or shower; and you get instant hot
water instead of wasting it down the drain!  Installing the
Hot Water Lobster instant hot water control
valve at the fixture furthest from your hot water tank (as shown in the installation diagram) will provide
faster hot water to all of the fixtures in your house.

NO ELECTRICITY NECESSARY! The Hot Water Lobster is all mechanical and designed to provide an
electricity free solution to maintain hot water at the tap.  This makes installation a snap (less than 10
minutes).  Other hot water solutions require the use of electricity and pumps that make installation
difficult and the pumps are often noisy and wear out in 2-4 years.

MORE HOT WATER! Adds as much as 10% more capacity to your current hot water system (by
keeping the water in your hot water pipes hot!).

KEEP PIPES FROM FREEZING!     The Hot Water Lobster instant hot water valve automatically allows
water in your pipes to circulate when the control valve cools below the set temperature (even when
your electricity goes out).

REDUCES CONDENSATION! The Hot Water Lobster instant hot water valve reduces condensation on
pipes and toilets basins.

MAINTENANCE FREE! The Hot Water Lobster has a solid brass valve body with an adjustable thermal
controlled stainless steel valve stem enclosed in a mounting box.

EASY INSTALLATION! The Hot Water Lobster comes complete with the mounting box, 4 sets  of 12"
flexible water lines and standard brass fitting.  All pre-assembled and tested for an easy 10-minute

STATISTICS! *A typical family wastes approximately 12,000-17,000 gallons of water annually waiting
for warm water to reach the tap.                 
*as determined by GAMA (Gas Appliance Manufactures Association)

Note: Circulation of water by thermal convection must not be restricted (no check-valves) between the
water heater tank  and the Hot Water Lobster Instant Hot Water Valve.
Hot Water Lobster Instant Hot Water Valve PDF Installation Instructions
Hot Water Lobster Instant Hot Water Valve Mail Order Form
Hot Water Lobster Instant Hot Water Valve Frequently Asked Questions
Last Updated
Green Hot Water
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      What to Look for in Hot Water Recirculation Systems           

Hot Water Circulation products include circulators, pumps and accessories typically
used for the circulation of water for heat transfer in a wide range of residential and light
commercial applications. Water circulation products are available in a variety of
materials including bronze, brass, cast iron and stainless steel.

Some preferred features to look for in purchasing your hot water recirculation system:
·        All brass and stainless steel construction for a long life.
·        A long warranty of at least 6-years.
·        Adjustable thermostatic control to reduce unnecessary energy usage.
·        Easy installation (not requiring a water pump, pipe cutting, soldering or electrical

What Are Hot Water Recirculating Systems?

Recirculation Systems are often used to circulate domestic hot water so that a faucet
will provide hot water instantly upon demand. In regions where water conservation
issues are rising in importance with rapidly expanding and urbanizing populations local
water authorities offer rebates to homeowners and builders that install a hot water
recirculation system to save water. In typical one-way plumbing without a recirculation
system, water is simply piped from the water heater through the pipes to the tap. Once
the tap is shut off, the water remaining in the pipes cools producing the familiar wait for
hot water the next time the tap is opened. By adding a recirculation system and
constantly circulating a small amount of hot water through the pipes from the heater to
the furthest fixture and back to the heater, the water in the pipes is always hot, and no
water is wasted during the wait. While the majority of these systems require a pump
and have no adjustable temperature capabilities, a significant reduction in energy can
be achieved by utilizing a temperature adjustable thermostatically controlled
recirculation valve mounted at the last fixture on the loop. Thermostatically controlled
valves allow owners to choose the desired temperature of hot water to be maintained
within the hot water pipes since most homes. Thermostatically controlled recirculation
valves cycle on and off to maintain a user's chosen temperature and consume less
energy than a continuously operating pump. By installing a thermostatically controlled
valve just at the farthest fixture on the loop, convection circulated hot water reaches
the entire loop. Installing a circulation pump on a hot water circulation loop can be
difficult due to limited available space, cosmetics, noise restrictions or lack of available
power. Recent advancements in hot water circulation technology used by the Hot
Water Lobster Instant Hot Water Valve allow for benefiting from temperature controlled
hot water circulation without the need to install a pump. This advanced eco-friendly hot
water circulation system utilizes a temperature controlled valve strategically installed at
the last fixture on the loop. Thermal insulation applied to the pipes helps mitigate this
second loss and minimize the amount of water that must be circulated to keep hot water
constantly available.

The traditional hot water recirculation system uses a dedicated return line from the
point of use located farthest from the hot water tank back to the hot water tank. In
homes where this return line was not installed the cold water line is used as a return
line.  Reduced energy waste and discomfort is possible by preventing occurrences of
hot water line siphoning in open-loop hot water circulation systems which utilize the cold
water line to return water back to the water heater. Hot Water Line Siphoning occurs
when water from within the hot water line siphons or is forced into the cold water line
due to differences in water pressure between the hot and cold water lines. Utilizing a
temperature controlled hot water recirculating valve significantly reduces energy
consumption by preventing siphoning of hot water out of hot water lines during cold
water use.  A temperature controlled hot water recirculating valve can also prevent pipe

                            How To Prevent Pipes From Freezing

If you've ever had the misfortune of having a water pipe freeze and burst, you know
first hand about what a devastating impact it can have on your home. The broken pipe
itself is actually relatively minor, but the damage caused by the leaking water running
through your walls and ceiling can mean a major reconstruction project, requiring
replacing drywall, ceilings and maybe even furniture and appliances. Here are some
ways to make sure you never have to go through that hassle.

1. Plan ahead and figure out which pipes could potentially freeze. Water pipes running
through unheated crawl spaces and pipes running through walls to the outside are
prime candidates for freezing.

2. Turn off the water supply lines running to your outside taps before the cold weather
arrives. There is usually a shut off valve in the water supply line close to where it goes
through the outside wall. Once the water is shut off inside, go outside and open the
outside taps as well. This will drain any water remaining in the pipe or in the tap, so
there's nothing to freeze.

3. Check any pipes that run close to outside walls. Put some insulation between the
pipe and the wall to help keep the cold away from the pipe.

4. Insulate any pipes that run through unheated crawl spaces. Wrap them with
insulation and tape or put preformed pipe sleeve insulation along the pipes, then tape
the sleeves in place.

5. Install electrical heating tape (available at home stores) on any pipes that run
through areas that get really cold, like garages.

6. OR, simply an innovative and patented technology known as a “temperature
controlled hot water recirculating valve” (it’s a breeze to install-no pipe cutting,
soldering or electrical connections). It uses your existing water pipes and the thermal
convection generated by your water heater to keep water circulating back to your water
heater for reheating (not requiring a pump or any electricity). Warm circulating water
will not freeze. These systems are temperature-controlled and are easily adjustable to
meet your particular temperature needs. There is no water waste and it also reduces
the energy required to heat your water while it provides instant hot water to your
faucets and showers.

Reasons to install a Hot Water Lobster Instant Hot Water Valve:

  •   Saves thousands of gallons of water by not running it down the drain!
  •   Get your hot water faster from your current water heater!
  •   Save time, energy and money while living a more “green” lifestyle.
  •   Eco-friendly!
  •   Aids in preventing pipe freeze.
  •   Only $179.99! (Plus Shipping & Handling)
  •   10-Year WARRANTY
  •   Brass Valve with Stainless Steel Stem.
  •   Easy installation! (no pipe cutting, soldering or electrical connections required).
  •   Shipped completely assembled with flexible water lines.
  •   Works with or without a dedicated hot water return line.
  •   When you turn on your faucet you've got instant hot water!

Eliminating that wasted water saves you thousands of gallons of water every year. A
typical family of 4 can save over 17,000 gallons of water per year! By not running that
water down the drain you are reducing the amount of sewage that needs to be treated
as well!