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thermostat

A thermostat is a regulating device component which senses the temperature of a physical system and performs actions so that the system's temperature is maintained near a desired setpoint.
Thermostats are used in any device or system that heats or cools to a setpoint temperature, examples include building heating, central heating, air conditioners, HVAC systems, water heaters, as well as kitchen equipment including ovens and refrigerators and medical and scientific incubators. In scientific literature, these devices are often broadly classified as thermostatically controlled loads (TCLs). Thermostatically controlled loads comprise roughly 50% of the overall electricity demand in the United States.A thermostat operates as a "closed loop" control device, as it seeks to reduce the error between the desired and measured temperatures. Sometimes a thermostat combines both the sensing and control action elements of a controlled system, such as in an automotive thermostat.
The word thermostat is derived from the Greek words θερμός thermos, "hot" and στατός statos, "standing, stationary".

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  1. N

    Timer and Thermostat Update

    Hi all, I have a mechanical timer (5 wire not including ground) by the boiler for heating & water and a thermostat in the living room. The timer keeps missing switches so not coming on/off automatically. I could replace it like for like but I'm considering removing it and changing the...
  2. zack6600

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  3. J

    Boiler doesn’t want to listen to (Hive) Thermostat

    Hi - this is driving me nuts and I can’t figure it out so any thoughts welcome. The hive receiver at the boiler is correctly receiving a signal from the thermostat to turn the heating on - but then… nothing! This definitely isn’t a hive communication issue given (a) the hot water via hives...
  4. M

    Removing thermostatic valve to clean

    I have a thermostatic concealed shower and would like to remove the thermostatic valve and look to clean any debris as it doesn't appear to be getting very hot, other showers are fine. It's around 6 years old. It was installed by a plumber and bought from a company in Wales, have been told it...
  5. R

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    I have a thermowatt RTS-3 red immersion. I would like to replace the thermostat which is red can I replace it with a higher temperature thermostat.
  6. L

    How do I fit Bosch thermostatic valves to old radiators .

    background: I have 15 radiators 20+ years old with no thermostatic valves and Bosch instructions depend on replacing the actuator part only of old thermostatic valves. Surely there is an option for new complete valve replacing? Tom
  7. A

    Thermostat ticking very loud. What can I do? Ok

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  8. P

    The HWC Mystery - only reaches 50c despite a tested thermostat...

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  9. T

    URGENT Thermostat not firing up boiler, Salus/Greenstar

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  10. 6

    Testing a Type TSR thermostat

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  11. J

    Replacing a Honeywell T40 thermostat with a Honeywell DT90e

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  12. G

    Recommended smart thermostat/controller for ATAG combi (ATAG or Tado)

    Hi all I'm considering getting an ATAG IC Economiser (combi), and to take advantage of the 14 year warranty I need to get one of 2 smart controllers: ATAG One Zone Tado v3+ An annoyance about the Tado is that the UK version doesn't support OpenTherm (unlike the EU model), but this is...
  13. S

    Honeywell thermostat replacement

    I need to replace our Honeywell CM721, I believe the modern replacements would be either Honeywell T3R or T4R, is this correct and would the receiver also need replacing or would the T's mate up to my original Honeywell receiver?
  14. Q

    Worcester MT10RF mechanical rf thermostat is broken all cogs fell out

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  15. M

    Smart TRV and room thermostat replacement

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  16. G

    Thermostat broken, boiler heating rads up constantly

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  17. C

    Worcester 35 HE plus boiler/ tr2 thermostat controller replacement

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  18. M

    Replacing old thermostat for Nest

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  19. T

    Best direct replacement for old Landis & Staefa Room Thermostat

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  20. S

    Potterton Performa 30 HE and relay switching thermostat (Tado)

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