Hi all, I’m not a plumber but looking to change my parents Dial Thermostat & potterton programmer to a Honeywell wireless type .
They currently have a Glowworm ultimate boiler and the programmer does the heating & hot water (cylinder) separately once / twice a day or off .
I do have a wireless Honeywell T3 (honeywell home) programmer/receiver but I’m thinking it won’t be compatible as I think It only does the heating and not the hot water ?
I use the T4 and it so much better than my old dial thermostat that I’d like my elderly parents to be able
Control their heating more accurately with easier access than their hallway wall mounted one .
Any advice would be a great help , I’ll be using a local boiler engineer / plumber to fit so just wanted to find out about these first .
Thanks , scott .



They currently have a Glowworm ultimate boiler and the programmer does the heating & hot water (cylinder) separately once / twice a day or off .
I do have a wireless Honeywell T3 (honeywell home) programmer/receiver but I’m thinking it won’t be compatible as I think It only does the heating and not the hot water ?
I use the T4 and it so much better than my old dial thermostat that I’d like my elderly parents to be able
Control their heating more accurately with easier access than their hallway wall mounted one .
Any advice would be a great help , I’ll be using a local boiler engineer / plumber to fit so just wanted to find out about these first .
Thanks , scott .


