Bosch ProTankless Freeze Protection Kit

7709003574

Status: In Stock

US$93.99

Description

Description

The Bosch ProTankless Freeze Protection Kit, part number 7709003574, is an indoor supplemental freeze protection accessory designed to protect compatible Bosch ProTankless and Therm series tankless gas water heaters from freeze damage when the unit is installed in an indoor unheated location where ambient temperatures may drop to near-freezing levels during cold-weather periods.

The 7709003574 kit provides supplemental thermal protection for the internal components of the heater unit when installed in locations such as garages, attics, or crawlspaces where overnight ambient temperatures may fall to near-freezing levels during short-duration cold events.

The kit is rated to protect the heater unit against freeze damage in ambient temperatures down to 5°F above zero for short-term conditions only and is not designed to protect units installed in locations where temperatures routinely remain at or below the freezing point for extended durations. Supplemental plumbing insulation for all supply and return lines adjacent to the heater is required in conjunction with this kit.

What's Included: Bosch ProTankless Freeze Protection Kit 7709003574 with all components required for installation on compatible Bosch ProTankless and Therm series tankless gas water heater units. Supplemental pipe insulation for adjacent plumbing lines is not included and must be sourced separately.

Installation Limits: The 7709003574 kit is for indoor installations only and is not an outdoor freeze protection solution. The kit protects the heater unit only — it does not protect adjacent water supply lines, gas lines, or plumbing connections from freezing. Units installed in locations where ambient temperatures are expected to remain below freezing for extended periods must have all water drained from the unit as an additional precautionary measure regardless of this kit being installed. The kit does not eliminate the need for proper installation site selection.

Compatibility: The Bosch ProTankless Freeze Protection Kit 7709003574 is compatible with the Bosch Therm 830 ES Natural Gas (7703311076), Bosch Therm 830 ES Liquid Propane (7703411074), Bosch Therm 940 ES Natural Gas (7703311075), and Bosch Therm 940 ES Liquid Propane (7703411073) tankless gas water heaters available at RuralEnergy.com. Note that the Bosch Therm 830 ES and Therm 940 ES units include built-in freeze protection as a standard feature; this kit provides supplemental protection for installations in unheated indoor spaces where built-in freeze protection alone may be insufficient.

Features

Features

  • Supplemental indoor freeze protection accessory for compatible Bosch Therm 830 ES and Therm 940 ES tankless gas water heaters installed in unheated indoor locations such as garages, attics, and crawlspaces
  • Rated to protect the heater unit from freeze damage in ambient temperatures down to 5°F above zero for short-term overnight cold events only
  • Not designed for installations where ambient temperatures routinely remain at or below freezing for extended durations — units in such locations must have water drained as an additional precautionary measure
  • Protects the internal components of the heater unit only — supplemental insulation for all adjacent water supply and plumbing lines must be installed separately
  • For indoor installation use only — this kit is not an outdoor freeze protection solution and does not replace proper installation site selection
  • Compatible with the Bosch Therm 830 ES NG, Therm 830 ES LP, Therm 940 ES NG, and Therm 940 ES LP tankless gas water heaters available at RuralEnergy.com

Specifications

Specifications

Brand: Bosch
Part Number: 7709003574
Product Type: Indoor Supplemental Freeze Protection Kit
Minimum Ambient Temperature Rating: 5°F above zero — short-term conditions only
Installation Type: Indoor unheated spaces only (garage, attic, crawlspace)
Heater Protection Scope: Internal heater unit components only — does not protect adjacent plumbing lines
Extended Freeze Condition Requirement: Water must be drained from unit if below-freezing temperatures are expected for extended durations
Plumbing Line Protection: Not included — supplemental pipe insulation must be sourced and installed separately
Compatible Models at RuralEnergy.com: Bosch Therm 830 ES NG (7703311076), Therm 830 ES LP (7703411074), Therm 940 ES NG (7703311075), Therm 940 ES LP (7703411073)

 

The Bosch ProTankless Freeze Protection Kit 7709003574 is a supplemental indoor freeze protection accessory for Bosch Therm 830 ES and Therm 940 ES tankless gas water heaters installed in unheated indoor spaces at RuralEnergy.com. It provides added thermal protection for short-term cold events down to 5°F above zero and is intended to supplement the built-in freeze protection standard on the Therm 830 ES and Therm 940 ES platforms.

 

Support

Support

 
Product FAQ

What does the Bosch ProTankless Freeze Protection Kit 7709003574 protect against?

The 7709003574 kit provides supplemental freeze protection for the internal components of compatible Bosch Therm 830 ES and Therm 940 ES tankless gas water heaters installed in unheated indoor locations. It is rated to protect the heater unit from freeze damage in ambient temperatures down to 5°F above zero for short-term overnight cold events. It does not protect adjacent water supply lines, gas connections, or plumbing components surrounding the heater — those must be insulated separately.

Which Bosch tankless water heaters at RuralEnergy.com are compatible with the 7709003574 freeze protection kit?

The Bosch ProTankless Freeze Protection Kit 7709003574 is compatible with all four Bosch tankless gas water heater models currently available at RuralEnergy.com: the Therm 830 ES Natural Gas (7703311076), the Therm 830 ES Liquid Propane (7703411074), the Therm 940 ES Natural Gas (7703311075), and the Therm 940 ES Liquid Propane (7703411073). All four models include built-in freeze protection as a standard feature; this kit provides additional supplemental protection for installations in unheated indoor spaces where that built-in protection alone may be insufficient.

Is the Bosch 7709003574 freeze protection kit suitable for outdoor installations?

The 7709003574 kit is designed for indoor installations only and is not an outdoor freeze protection solution. It is intended for heaters installed inside unheated structures such as garages, attics, or crawlspaces where ambient temperatures may occasionally drop to near-freezing levels during short cold events. Units installed outdoors or in locations with sustained below-freezing ambient conditions require a different approach to freeze protection and must have all water drained from the unit during extended freezing periods.

Does the Bosch Therm 830 ES or 940 ES already include freeze protection, and why would this kit be needed?

Both the Bosch Therm 830 ES and Therm 940 ES include built-in freeze protection as a standard feature. However, built-in freeze protection is designed to guard the unit under typical conditioned or semi-conditioned indoor installation conditions and may not provide sufficient protection in unheated indoor spaces such as garages, attics, or crawlspaces where ambient temperatures can drop significantly during cold-weather events. The 7709003574 kit provides the supplemental thermal protection layer needed to close that gap for installations in those challenging indoor environments.

What additional steps are required if the installation location experiences extended periods below freezing?

If the installation location is expected to experience ambient temperatures below freezing for extended durations rather than short overnight events, draining all water from the heater unit is required as an additional precautionary measure regardless of whether the 7709003574 kit is installed. The kit's 5°F above zero protection rating applies to short-term cold conditions only and does not provide adequate protection for sustained sub-freezing environments. All adjacent water supply and plumbing lines must also be insulated separately as the kit does not protect those components.

What is not included with the Bosch 7709003574 freeze protection kit?

The 7709003574 kit does not include supplemental pipe insulation for the water supply lines, gas lines, or plumbing connections adjacent to the heater. Those components must be insulated separately using appropriately rated pipe insulation products sourced independently. The kit addresses freeze protection for the internal components of the heater unit itself only. Customers installing a Bosch Therm 830 ES or Therm 940 ES in a garage, attic, or crawlspace should plan for both the kit and supplemental plumbing line insulation as part of the complete installation.

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