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Taking Control - A guide to buying or upgrading central heating controls(view report contents)

Programmable thermostats compared

 
DanfossRandall TP5E (now TP5000)
Danfoss Randall TP75 (now TP7000)

Honeywell CM31/37
Honeywell CM67
Horstmann Centaurstat 7
Myson MPRT REV200
Siemens REV200
Siemens REV23RF
Siemens RAV12
Main features
Hot water control
no
no
no
no
no
no
no
no
no
Heating zones
1
1
1
1
1
1
1
1
1
Max no of on off periods in 24 hours
6
6
48 [2]
6
4
4
3
3
48 [2]
No of days a week which can be programmed separately
2
2
7
7
2
7
7
7
7
Advance
no
no
no
no
yes
no
no
no
no
Boost (no of hours)
no
1, 2 or 3
no
no
no
no
no
no
no
Holiday
no
yes
no
yes
no
yes
yes
yes
yes
Programmes
Automatic
yes
yes
yes
yes
yes
yes
yes
yes
yes
All day
yes
yes
no
yes
no
no
no
no
no
On constantly
no
no
no
no
no
no
no
yes
no
Off
no
no
no
yes
yes
yes
yes
no
no
Other features
Temperature override
yes 
yes
 no
yes 
 yes
 yes
 yes
yes
no
LCD display
yes
yes
no
yes
yes
yes
yes
yes
yes
Indicator to show heating is on
yes
yes
no
yes
yes
yes
yes
yes
yes
Ratings for
Dexterity impaired
four flames
three flames
two flames
four flames
three flames
three flames
two flames
two flames
two flames
Visually impaired
three flames
three flames
three flames
three flames
two flames
two flames
one flames
one flames
two flames
Tactile feedback
no
no
no
no
no
no
no
no
no
Audible feedback
no
no
no
no
no
no
no
no
no

[2] can programme control so that heat can come on and off in any combination of 15 minute intervals

Key:

Ratings: five flames The more flames the better

Hot water control
You need a programmer which controls hot water if you have a hot water tank. Combi (combination) boilers heat water when a hot tap is turned on. There is no storage tank and you don’t need a programmer with hot water controls.

Heating zones
If you live in a large house and want the heating to work differently in different areas, you will need a programmer with zone controls. Usually people have separate zones for living and sleeping areas.

Advance or Override
This button functions simply to switch the heating on if it is off, or switch it off if it is on. Useful for temporary changes - if you decide to go out, or if the temperature drops and you want the heating to come on at once, say.

Boost
Pressing this button keeps the heating on for a period. The tables tell you for how long.

Holiday
Allows you to set the heating at a lower temperature while you are on holiday. It will return to your normal setting on the day you come home.

Programmes
Depending on the model, once you have set the timings, you can switch the programmer to Automatic (the heating will go on and off at the times you have set), All day (the heating will come on at the beginning of the first time set, and stay on until the end of the last time set for that day), On constantly and Off.

 

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