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Express delivery for Thursday Available Until 4pm Tomorrow
UK Mainland Only,
3pm cut-off for Highlands and Islands


 

 

 

 

Express delivery for Thursday Available Until 4pm Tomorrow
UK Mainland Only,
3pm cut-off for Highlands and Islands


Grasslin (Tower)

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Grasslin 02.76.0126.1 Mechanical Timer for the following Ariston Boilers ONLY: ACO 27 32 35HP Plu..
£85.04
Ex Tax: £70.87
Grasslin 02.76.0133.1 Mechanical Timer for the following Boilers ONLY: Ariston: SYSTEM A 2430 M..
£72.05
Ex Tax: £60.04
* Ideal for Immersion Heaters * 24 hour or 7 days programmes * 1 minute switching intervals * Tim..
£35.32
Ex Tax: £29.43
Digital weekly room thermostat clock Large easy-to-read display Up to 48 different time &..
£81.41 £66.00
Ex Tax: £55.00
Digital weekly room thermostat clock Large easy-to-read display Up to 48 different time &..
£134.28 £114.00
Ex Tax: £95.00
* Ideal for Immersion Heaters * Multiple on and off times * Captive tappets * Timed/off/constant ..
£20.17
Ex Tax: £16.81
• Complete with new backplate • Synchronous clock with hands and captive tappets • Multiple ON &am..
£39.96
Ex Tax: £33.30
• 24 hour / 7 day programming. • Independent 7 - day programming for both channels • Backplate Inc..
£50.53
Ex Tax: £42.11
The touchscreen room thermostat is specially designed to control your heating with an accurate tempe..
£35.63
Ex Tax: £29.69
• 22mm Airsep • Reduces noise in the system • Is widely specified and used by BritishGas • Reduce..
£12.67
Ex Tax: £10.56
• 22mm Airsep with Cold Feed • Reduces noise in the system • Is widely specified and used by Briti..
£12.89
Ex Tax: £10.74
• 28mm Airsep • Reduces noise in the system • Is widely specified and used by BritishGas • Reduce..
£16.15
Ex Tax: £13.46
Replacement Actuator for Tower VAL322MP VAL328MP and A3MID Mid-Position Motorised Valves. ..
£37.99
Ex Tax: £31.66
Supplied with Lockshield Fully reversible For flow or return Vertical or horizontal head Range 7°C..
£12.68
Ex Tax: £10.57
* 16(4)A SPDT Contacts * Replaces any domestic thermostat - including 2-wire thermostats * Range 1..
£18.10
Ex Tax: £15.08
Replacement power head actuator for the following motorised valves: Tower VAL222 Tower VAL2..
£33.00
Ex Tax: £27.50
• Water heater timeswitch • Single / dual or twin immersion heater applications • 15 To 120 minute..
£65.99
Ex Tax: £54.99
Ideal for those that need a simple control for time and temperature. • Thermostat clock with comf..
£122.35
Ex Tax: £101.96
● Supply Voltage 220-240V AC 50 Hz ● Power consumption 6W ● Operating temperature range: +5 to..
£40.78
Ex Tax: £33.98
● Supply Voltage 220-240V AC 50 Hz ● Power consumption 6W ● Operating temperature range: +5 to..
£47.57
Ex Tax: £39.64
Grasslin Magnetic Filter: Ideal low cost alternative to Magnaclean Professional, Fernox TF1 or Sp..
£65.99
Ex Tax: £54.99
Replaces (use existing backplate & wiring): Grasslin (Towerchron) DP72, QM2, QE2 Trac TPE20 ..
£50.15
Ex Tax: £41.79
• Digital weekly radio frequency room thermostat clock • Range (in buildings) < 30m • Attractiv..
£46.20
Ex Tax: £38.50
Digital RF Room Thermostat (non programmable) Transmitter: • Battery powered 2 x AA (LR6) alkali..
£54.37
Ex Tax: £45.31
Leak sealer can eliminate damp patches under screed avoiding costly repairs. Add Leak Sealer to t..
£7.19
Ex Tax: £5.99
Tower Triple X Silencer is designed to reduce boiler noise in central heating systems caused by lime..
£3.95
Ex Tax: £3.29
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Heating Controls Online is rated 4.90 stars by Reviews.co.uk based on 2104 merchant reviews

4.90 / 5 Rating
2104 Reviews
The Siemons central heating and hot water controler was a direct replacemnt for an old unit,it arrived quickly and did what it said on the tin a direct replacement,that took 1/2 an hour to change. great job 1
Prompt response to order and speedy delivery.
Easy to place order and very good delivery arriving on stated day.