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Simple, straightforward and low shipping rates for these tankless water heater accessories.


Tankless Water Heater Accessories


Tankless water heaters offer a convenient way to heat water for all kinds of uses, and we have the accessories you need to make your system function efficiently and effectively. Whether you are heating the water for a sink or for a whole house, these products will make your system perform at the level they were designed to.

click here for Takagi tankless water heaters

Takagi accessorie #TK-TV03
TK-BF01 replaces (#TK-TV03)
Takagi accessorie #TH-TV07
#TH-TV07

Model # Description Price & Quantity
TK-TV04 Outside Vent Kit
For discontinued models T-KJr, T-K1S & T-K3/T-K3-SP
$19.95
Limited to stock
TK-RB01 Recess box with vent elbow and vent hood termination
Fits discontinued model T-K3
$129.65
Limited to stock
TK-RE02 Temperature Remote Controller
Fits models T-KJr2-IN, T-KJr2-OS, T-K4-IN, T-K4-OS
$99.19
TM-RE30 Temperature Remote Controller
Fits models T-D2-IN, T-D2-OS, T-M32
$124.99
TM-MC01
replaces TM-RE20
Includes TM-RE30
Multi system controller is capable of handling up to 20 units at one time. It also works as a diagnostic tool that provides error codes.
Fits model T-M32
$686.44
TK-PC01 Pipe cover
Fits models T-K4-IN, T-K4-OS, T-D2-IN, T-D2-OS
- Please note: the TK-PC01 will not work with the "Isolator" isolation valves
$67.62
FVMX-5C Temperature and Pressure Relief Valve - 200,000 max (required for all water heaters)
Fits models T-KJr2-IN, T-KJr2-OS, T-K4-IN, T-K4-OS, T-D2-IN, T-D2-OS
$74.33
The standard temperature setting is 122°F and is only adjustable with purchase of the TK-RE02 temperature remote controller.

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Bosch Pro Tankless Water Heater Accessories
click here for Bosch tankless water heaters

Model # Description Price & Quantity
4TWHVK3S Accessory: Horizontal Vent Kit $247.55
TSTAT2 Accessory: Hand-held Wireless Remote Thermostat $167.15

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Temperature Pressure Relief Valve is Required on All Water Heaters

Model # BTU Rating Price & Quantity
FVMX-5C 200,000 max $74.33

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to other relief valves



"The Isolator"
Water Heater Isolation Valves - Lead Free

Lead free tankless water heater isolation valves
click to enlarge
includes pressure relief valve (not shown)

These water heater isolation valves feature:
  • Complete inlet/outlet valve system that provides everything you need for a secure installation including full port testing and flushing of the system with easy to install union connections.
  • Easy two step installation of your tankless water heater with unsurpassed safety, features and benefits.
  • The ability to drain your hot water lines throughout the building or just at the water heater with a quick quarter turn.
  • Extra features like a full port for full flow throughout the valve including a full port outlet for purging, flushing and testing the system.
  • Pressure relief valve included, rated for 150 psi and 200,000 BTU's
  • Protection for the life of your system
  • Emergencies are handled with quick quarter turn ball valve shut-offs for total isolation of your system in seconds.
  • Repair or replace your heater in minutes with easy-fit union style connections that do not disturb your piping system.
  • "CleanBrass" construction complies with federal and state low-lead requirements
  • These valves are rated for 150psi and 200,000 BTU's

Description Price & Quantity
Isolation Valve - Set   (Hot & Cold)   3/4" FIP Union x 3/4" FIP $94.89
Isolation Valve - Set   (Hot & Cold)   3/4" FIP Union x 3/4" Sweat $94.96
Isolation Valve - Set   (Hot & Cold)   1" FIP Union x 1" FIP $156.92

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Ultraflow High BTU Stainless Steel Gas Connectors
Ultraflow gas connectors
click here for larger image
These gas connectors feature:
  • Pre-assembled
  • Designed for applications with a significant BTU requirement
  • Can supply up to 290,000 BTU (NG) or 465,000 (LP)
  • Increases productivity by eliminating the need for pipe nipples, 90's and elbows
  • Common applications: tankless water heaters, commercial water heaters, furnaces, manufactured homes, boilers, rooftop HVAC units, and gas meters
Description Price & Quantity
Stainless Gasflex - 1"od (3/4"id) x 24" - with adapter to 3/4"fip x 3/4"mip $63.15
Gas ball valve 3/4" $9.07

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to flexible gas connectors - to stainless flex connectors for water



Water Heater Scale Inhibitor System
water heater scale inhibitor system
This water heater scale inhibitor system features:
  • 3/4" NPT
  • 10 GPM
  • Cold water feed line
  • Inhibits scale build-up caused by hard water
  • Helps protect piping from corrosion
  • Maintains efficiency and extends life of system
  • Translucent dispenser cartridge allows for convenient detection of remaining scale stopper level
  • Slow dissolve rate for long life and consistent dosing
  • Venturi tee is constructed from stainless steel and meets all low lead requirements for both federal and state
  • Multi-application design effective on all types of hot water systems-boilers, tankless, and tank-type (gas or electric)
  • Installs on cold waterline before water heater - can be installed in any direction
  • Scale Inhibitor media is siliphos which is suitable for drinking and cooking water and all food applications
  • Replacement cartridges (AP431) are available for these in-line scale inhibitor systems
Description Price & Quantity
Water Heater Scale Inhibitor System
  Order 6 or more for greater savings!
$69.95
Replacement cartridge for water heater scale inhibitor system
  Order 10 or more for even greater savings!
$29.99
Note: Recommended time to change/replace filter cartridge is 6 months.
Purchase a replacement cartridge to have on hand when needed.

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Drain Pan For Tankless Water Heaters

Wall Saver for Tankless Water Heaters

Wall Mount Tankless Water Heater Drain Pan
The first drain pan specifically designed for tankless water heaters and other wall mounted equipment.

Drain pans are required by most plumbing and mechanical codes and until now there was no pan available that met the needs of the tankless water heater and wall mounted boiler industries. This drain pan provides both leak and splash/spray protection to the structure while maintaining one of the most popular reasons for using tankless equipment - space savings. The pan mounts to the wall below the unit, or the unit may be installed partially within the pan. The pan also provides a location for the discharge of relief valves (if allowed by local code) and provides a location to install other popular safety accessories that can sense the presence of water and alarm and/or close the valves serving the tankless water heater.

This wall mount drain pan for tankless water heaters utilizes the same 1" PVC drain fittings as other drain pans.

Description Price & Quantity
Wall Mount Drain Pan For Tankless Water Heaters - 1" drain hole opening $38.29
12-pack Wall Mount Drain Pans $431.91
PVC Drain Connector for the tankless water heater drain pan (listed above)
Includes 1 each: 1" PVC male adapter, gasket, and locknut
$4.95

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Common Plumbing Terms
FIP Female Iron Pipe (NPT threads)
MIP Male Iron Pipe (NPT threads)
NPT National Pipe Thread
FNPT Female National Pipe Thread
MNPT Male National Pipe Thread
Nom. Nominal: Used to describe copper pipe and fittings in plumbing. Refers to the inside diameter of the pipe which varies by thickness of the pipe
Sweat Copper pipe solder fitting




Frequently Asked Questions

Q. "What is siliphos?"
A. Siliphos is a water treatment compound; a glass-like Polyphosphate containing Sodium, Calcium Magnesium and Silicate, formulated specifically for the treatment of water problems and to prevent the build-up of scale in plumbing. It is made from a blend of food grade organic phosphates, and has been approved by the USDA for drinking water and all food applications. It is safe for ingestion by humans, animals, and plants, and does not build up in waste water.

Q. "What does it mean to have ANSI Certification for lead free plumbing products?"
A. Laws requiring plumbing products that come in to contact with drinking water to be essentially lead-free (0.25% weighted average) have been passed in California, Louisiana, Maryland, and Vermont. In order for companies to ship these plumbing products to locations in CA, LA, MD and VT, they must be ANSI certified lead free.

Q. "What is CA AB 1953, LA Act No. 362, MD HB 372, and VT S.152 and how is this different from previous low-lead legislation?"
A. The United States Environmental Protection Agency (EPA) regulates the amount of lead in drinking water under guidelines established in the Federal Safe Drinking Water Act (passed in 1974; amended in 1988 and 1996). This Act defines "lead-free" as not more than 8% lead in pipes and fixture fittings. PLEASE NOTE: Use of the term "lead-free" varies between the new legislation in CA (AB 1953), LA ( Act No. 362), MD (HB 372), and VT (S.152), and in the current Federal Safe Drinking Water Act requirements. In the new legislation for CA, LA, MD and VT only (as of Jan 2013), it will mean 0.25% or less (weighted average). Similar national legislation is scheduled to go into effect Jan 2014.

Q. "Can I install this scale inhibitor upside down?"
A.This scale inhibitor can be installed in any direction with the filter pointing in any direction as long as the water flow direction is correct and the system has suitable pressure to function properly. Please note, the manufacturer recommends that the filter be supported if the Venturi tee is not installed horizontally with the filter outlet pointing downward. Also, if the Venturi tee is not installed horizontally with the filter outlet pointing downward, it may be more difficult to catch the remaining water in the line when replacing the cartridge. As always, please consult with a trusted local professional if you are at all unsure about correctly installing this scale inhibitor.



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