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PostPosted: Mon Oct 22, 2018 10:21 pm 
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Hi,

I’ll try and keep it brief. Old house with an aga and open plan kitchen/living/dining area. This is usually reasonably warm but does need some top up from the oil fired central heating. Rads in these rooms don’t have TRVs and are currently turned on and off manually to control temperature.

The rest of the house is often quite cold. Not that well insulated (but as best we can do for now, big scale renovation hopefully within 5 years). Most rads don’t have TRVs. House heats up reasonably quickly but also cools fairly quickly.

Old boiler timer is ready to be replaced, it’s a 50 year old mechanical thing that is really hard to set. I’m wondering about best option to replace it with. Thoughts I’ve had so far:

1) simple swap for a cheap digital timer. No other change to current setup.

2) fancy new thermostat setup (maybe Nest or something similar to control from phone) with room stat in one of the upstairs bedrooms. Options for open plan area would the be leave as is or get individual TRVs for the 2 rads in there.

Don’t really have that much experience or knowledge of heating. Which option seems most sensible? Which is likely to be more efficient?

Thanks for reading and any advice!

tl;dr - simple boiler timer vs smart thermostat thing in house with aga.


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PostPosted: Mon Oct 22, 2018 11:39 pm 
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Just my 2p worth.

I think smart stats are mostly a gimmick and a waste of time and money.
Room stat upstairs bedroom, waste of time money, as it would turn off? (all heating?) when that one bedroom gets warm.

If you want say upstairs heating and downstairs heating controlled separately, you are going to need a couple of diverter valves installed to "switch on and off" the rads as demanded by the stat. (You will also need to have a rad (bathroom?) that is on when ever either heating is on, it acts as a by pass. If you have 2 "nest stats" thats a lot of money to waste. (I am assuming it would need two of everything)

I would opt for a programmable hardwired stat from honeywell. Being hard wired it does not need batteries changing, and it never loses the connection signal. (Around £70 V nest £200)

Or you could go for 1 prog stat and all (but one) TRV's (£8 each)

Then again, I could be all wrong, but see what others think / suggest.

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PostPosted: Tue Oct 23, 2018 5:44 pm 
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someone-else wrote:
Just my 2p worth.


Thanks for the thoughts!

It would be great to have upstairs/downstairs controlled separately but I assumed that the valves etc would be time consuming and costly (not to mention messy) to put in?

I’m probably veering towards hard wired programmable one at this point. But open to any more suggestions!


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