Due to nationwide supply chain issues there may be some products with longer delivery times. Find out more here


Product was successfully added to your basket.

Star Star Star Star Star
Share this product
  • Name
  • Your Email Address
  • Recipient Name
  • Recipient Email Address
  • Message
Successfully added to your basket
Worcester Greenstar Comfort I RF Wireless Programmer

Worcester Greenstar Comfort I RF Wireless Programmer

New Merchandise Created with Sketch.
Item Code: 100953
Expected Delivery:  1 - 2 working days
help and info
Need Help?  0800 181 4488
Ex. VAT £145.39 Inc VAT

Additional Information

Brand Worcester
Lead Time 1 - 2 working days
Channels 2
Interface Digital
Program Options 7 Day
Type Programmer
Wireless Yes
Manufacturer Part No: 7733600001


The Worcester Greenstar Comfort I RF Wireless Programmer from Worcester Bosch is a twin channel controller.  It is compatible with a Worcester Greenstar boiler, featuring advanced wireless communication between thermostat and boiler. Also known as the Worcester Comfort 1, the easy to use digital system will bring your boiler to life with control of your heating and hot water from the boiler, coupled with an advanced wireless digital thermostat to place anywhere in your property.

Worcester Greenstar Comfort I Wireless Programmer features:

  • Intelligent conversation between control and boiler for increased efficiency
  • No wiring required and extremely reliable wireless signal
  • Pre-set heating and hot water programme
  • Easy menu navigation
  • Holiday mode of which only frost protection will remain active throughout this programmable period

This digital timer is a suitable upgrade over the manual Worcester MT10 and allows for quick and convenient control of your heating and/or hot water. The added benefit of the new Comfort I RF programmer is the optional 5-year warranty**

  • Product type:  Timer, programmer
  • Controls:  Heating, hot water
  • Programmable Period:  24 hrs and 7 days a week (3 adjustable time periods each day)

View the Video...


The boiler or wall mounted* unit is a twin channel programmer/receiver and is connected to an RF room thermostat transmitter. The programmer/receiver is for central heating and hot water control with modulating/enhanced load compensating boiler regulation. This enhance load compensating function enables an intelligent conversation with the boiler to achieve the desired room temperature in the most efficient way possible.

To help save money by burning less fuel, and to minimise room temperature “overshoot”, the boilers burner may stop firing just prior to the desired room temperature being reached. This behaviour including reduced radiator temperature is perfectly normal.

Simply set a temperature on the thermostat that you are comfortable with and allow the Comfort I RF and your boiler to do the work. The programmer/receiver has up to three sets of ON and OFF times that can be set to control central heating and hot water. The unit has user and installer menus to allow the setting of the time programs, monitoring of system information, setting current time/date, daylight savings, and pairing the device with the room thermostat.

If you are using a Worcester System or Regular boiler, you may require an extra part to enable you to use the Comfort series of controls. Please contact Worcester for further information. The Worcester Greenstar Comfort range will only be compatible with Worcester Greenstar Boilers that feature EMS-BUS capabilities. Please ensure your boiler has this feature by checking your boiler pcb for the connection shown right: worcester comfort compatibility

*Wall mounting is only available when using optional Wall Mounting Accessory kit - not included
**5 year warranty applies when purchased and installed with a brand new Worcester boiler, otherwise, 1 year warranty.