Traditional storage tank water heaters produce standby energy losses that cost you money. A tankless water heater is used only when there is a demand for hot water, which is good for your budget and for the environment. Many tankless water heaters have a life expectancy of more than 20 years. They also have easily replaceable parts that extend their life by many more years, making them a great choice for your home water heating needs.

Flash Takagi TK3-OS Tankless Water Heater - For OUTDOOR Installations

Fully modulating gas fired tankless on demand water heater. Designed to supply hot water to: domestic hot water systems (direct and indirect using water storage tank applications) with or without recirculation system, piping, hydronic heating systems, radiant floor heating, and combined domestic water and heating water systems. Note: The T-K3-OS does not require any additional Category III venting or vent caps, making installation one step easier for its installers.

The Takagi T-K3-OS on-demand water heater features: This unique tankless water heater is designed for outdoor installations Efficient tankless water heater provides you hot water when you need it and doesn't waste energy when you don't Built in freeze protection - to make your tankless water heater more durable Overheat cut off fuse Inlet/outlet thermistors for constant temperature monitoring Flame sensor

Outdoor Tankless Water Heater Specifications: Flow rate: 0.5-7GPM Four temperature settings with dip switch (included): 113°F, 122°F (default), 140°F, 167°F Water pressure min: 15 psi max: 150 psi Natural gas pressure inlet: min: 5" WC max: 10.5" WC Gas input (NG & LP models): min: 11,000 BTU max: 190,000 BTU Gas connection: 3/4" NPT Water connections: 3/4" NPT LP gas pressure inlet: min: 8 " WC max: 13.5" WC Manifold pressure: natural gas 2.8 " WC propane 3.1 " WC Amps: .67 Weight: 40 lbs. Ignition: electronic ignition Electrical supply: AC 120 V Click here for dimensions

Takagi T-K3-OS tankless water heater for outdoor installations

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Model #	Description	Fuel Type	Select Item
TK3-OS-LP	Flash Takagi T-K3-OS Tankless Water Heater	Propane
TK3-OS-NG	Flash Takagi T-K3-OS Tankless Water Heater	Natural Gas
Takagi T-K3-OS Accessories
Model #	Description		Select Item
TK-RE02	Temperature Controller Remote
TK-RB02	Recess Box (Click for installation information)
TK-PC01	Pipe Cover
TK-RE02	Remote Control
WS1019	Wall Saver for Tankless Water Heaters (Click here for more information)
Pressure Relief Valves A pressure relief valve is required for all tankless water heaters. In some areas, a temperature and pressure relief valve is required. Check your local plumbing code for more information.
Pressure Relief Valve - Brass - 3/4" - 150 PSI
Temperature and Pressure Relief Valve - up to 200,000 BTU
Isolation Valves 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.
Isolation Valve - Set (Hot & Cold) 3/4" IPS Union x 3/4" IPS
Isolation Valve - Set (Hot & Cold) 3/4" IPS Union x 3/4" Sweat
Gas Connectors
Stainless Gasflex - 1" OD (3/4" ID) x 24" - with adapter to 3/4" FIP x 3/4" MIP
Gas Ball Valve 3/4"
Water Connectors - click here for more flexible water supply lines
Flexible Corrugated Stainless Steel Water Connector - 3/4" FIP x 3/4" FIP - 18" Long
Flexible Corrugated Stainless Steel Water Connector - 3/4" FIP x 3/4" FIP - 24" Long
Flexible Corrugated Copper / Stainless Steel Water Connector - 3/4" FIP x 3/4" Nom Sweat - 18" Long
Flexible Corrugated Copper / Stainless Steel Water Connector - 3/4" FIP x 3/4" Nom Sweat - 24" Long
Hot Water Heater Scale Inhibitor System Features: inhibits scale build-up, helps protect piping from corrosion, maintains efficiency & extends life of system, 3/4" NPT, 6 GPM, cold water feed line, made from FDA CFR-21 compliant materials, suitable for drinking and cooking water and all food applications, and effective on all types of hot water systems-boilers, tankless, and tank-type (gas or electric). Replacement cartridges (AP431) are available for these in-line scale inhibitor systems.
Hot Water Heater Scale Inhibitor System
Replacement filter for hot water heater scale inhibitor system
Note: Recommended time to change/replace filter cartridge is 6 months. Purchase a replacement cartridge to have on hand when needed.
FloodStop Systems for Water Heaters Automatically shut off the water supply to the water heater and sounds an alarm, leaving all other household fixtures and appliances operational. Powered by AC Adaptor/Transformer or Batteries. Output contacts available, which allow the Controller to connect with Alarm, Home Automation or Auto-Dialer systems if desired. Easily installed in fifteen minutes. 1-Year Manufacturer's Warranty.
FS 3/4-NPT - 3/4" Pipe threaded - full-port motorized ball valve (brass) - Works with any 3/4" MIPT supply line
FS 3/4-C - 3/4" Compression - full-port motorized ball valve (brass) - Works with any 3/4" copper applications

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To request a price quote, select the items you are interested in by clicking
the box in the "Select Item(s)" column next to the product.
Click the button below to add items to your quote list.

Note: if you're replacing your existing water heater (old tank style),
you may want to order a water heater drain pump to quickly/easily remove the water.

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All Takagi Tankless Water Heaters must be installed by a licensed professional.

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