I've just finished reading the monster thread called "Evohome is Noisy - please help me".
Beside the relief of surviving the experience I learned about the MT4/MT8 Small Linear Thermoelectric Actuator.
This seems like a miraculous device with lots of advantages: -
It does have a number of downsides as far as I can see. For one it doesn't easily slot into the Evohome infrastructure unless you are willing to buy a relay device for every valve and sacrifice the possibility of proportional control of the radiator flow. Secondly it has no built in thermostat or display but to be honest I don't see that as a problem. I see Honeywell recommend driving it with something called Excel 10 or 12 but don't have much detail yet.
So has anyone driven their radiators with this instead of full Wireless TRVs like HRT92? If so I'd be interested to hear how easy it was to drive (especially if you used PWM).
Beside the relief of surviving the experience I learned about the MT4/MT8 Small Linear Thermoelectric Actuator.
This seems like a miraculous device with lots of advantages: -
- It is totally silent (no motors).
- No batteries to replace.
- It supports proportional control through PWM.
- 24V version available (safe for bathroom use).
- It responds immediately (although it can take 2 mins to fully open).
- It won't lose connection due to interference.
It does have a number of downsides as far as I can see. For one it doesn't easily slot into the Evohome infrastructure unless you are willing to buy a relay device for every valve and sacrifice the possibility of proportional control of the radiator flow. Secondly it has no built in thermostat or display but to be honest I don't see that as a problem. I see Honeywell recommend driving it with something called Excel 10 or 12 but don't have much detail yet.
So has anyone driven their radiators with this instead of full Wireless TRVs like HRT92? If so I'd be interested to hear how easy it was to drive (especially if you used PWM).
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