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Timeswitches and Programmers

The following timeswitches and programmers are for use on heating only or heating and hot water appliances To control both hot water and heating on an appliance you will need a 2 channel programmer / timeswitch. To control only heating or only hot water you will need a single channel programmer / timeswitch. Generally a normal programmer would be used in conjunction with a room thermostat to control a heating zone or cylinder thermostat to control the hot water circuit, or on its own if no temperature control is required. A programmer works on the ON / OFF Principle.

Price
  • 11
  • 4
Heating Control Height
  • 15
Heating Control Depth
  • 15
Heating Control Width
  • 2
  • 12
  • 1
Shape
  • 1
  • 14
  • 8
  • 7
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1 - 15 Of 15 Products
Danfoss Randall TS715 SI Electronic Timeswitch
SAVE 26%
£58.95 RRP £79.60
Honeywell ST9100A 1 Day Single Channel Time Switch
SAVE 23%
£64.95 RRP £84.52
Danfoss Randall CP715SI Two-Channel Timebase Programmer
SAVE 24%
£70.95 RRP £93.67
Danfoss Randall FP715 SI Two-Channel Full Programmer
SAVE 29%
£71.95 RRP £100.90
Honeywell ST9100C 7 Day Single Channel Time Switch
SAVE 22%
£76.95 RRP £98.96
Honeywell ST9100S 1 Day Service Time Switch
SAVE 23%
HWST9100S1007
In Stock
3 Days
£77.96 RRP £101.38
Danfoss SET3E Electronic 24hr Programmer with Common Timebase
SAVE 27%
£85.95 RRP £117.36
Danfoss Randall RX1 Single Channel Receiver Unit
SAVE 26%
£87.95 RRP £118.34
Honeywell ST9400A 1-Day 2 Channel Programmer
SAVE 23%
HWST9400A1002
In Stock
3 Days
£91.95 RRP £119.50
Danfoss Randall FP975 7 Day Full Programmer
SAVE 28%
£94.95 RRP £132.52
Honeywell ST9400C 7-Day 2 Channel Programmer
SAVE 23%
HWST9400C1000
In Stock
3 Days
£99.95 RRP £129.10
Danfoss Randall RX2 Two Channel Receiver Unit
SAVE 26%
£101.95 RRP £137.59
Honeywell ST9400S 1-Day 2 Channel Service Programmer
SAVE 23%
£110.96 RRP £143.35
Danfoss Randall RX3 Three Channel RF Receiver Unit
SAVE 26%
£115.95 RRP £157.34
Honeywell ST699 24-Hour Classic Programmer
SAVE 23%
HWST699B1002
In Stock
3 Days
£126.96 RRP £164.80

BTU Calculator

Below is a tool that can enable you to calculate the BTU requirements needed for your room.

There are many factors that affect this calculation including the outdoor temperature, thickness of exterior walls and the quality of insulation installed. You should also ensure you have a boiler that is capable of generating necessary output for all of the radiators in your property.

Our BTU calculator should be used as a guide only, the actual BTU requirements may be slightly different to what our calculator will produce. If you need further help, please contact us.

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