RE: Re: Anyone else fallen in love with the Nest thermostat.

["Neil Ball" <neilball@xxxxxxxxxxxxxxx>]

I think their idea is a great step forward for the US market - they
still
rely on a conventional 5 wire stat as the most common form of temperature
control for the central air type ducted air systems, so the Nest approach
should offer a serious improvement in comfort and energy use.



The current issue with the Nest stat is it only switches
low-voltage/low-current loads so cannot be used as a direct swap for the
common UK stats. There is nothing to stop them being used for fully zoned
systems except that the only option would be to fit wired thermal actuators
to the radiator TRV body, so not an easy retrofit option.



It's not the form or physical design of the stat that Honeywell have issue
with, it is some of the underlying control strategies and features it uses
that are the issue.



Neil B.



From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Gavin Sallery
Sent: 09 February 2012 09:54
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Re: Anyone else fallen in love with the Nest
thermostat.





I must also admit to being somewhat indifferent to the appeal of Nest; it
doesn't seem to offer much that has not been seen before apart from a
tasteful look-and-feel (which is presumably why Honeywell are pursuing them
for patent infringement).

Does anybody know whether it's possible to link a Nest up to other home
automation equipment? Someone recently asked about this, but I don't know
if
they have any open API at all: http://hometechnologyintegration.org/node/52

Cheers,

Gavin

On 8 Feb 2012, at 21:01, dreamgreenhouse_com wrote:

>
>
> --- In ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
,
"davidcfromtheuk" <ukdavidc@...> wrote:
> >
> > I've been teased by a friend in the States about it (after years
of
ribbing him about the way they waste energy !) Website is nest dot com.
It's
designed by ex Apple engineers !
> >
>
> Whilst this is undoubtedly a good looking piece of kit, I must be
missing
something because it looks like a flawed piece of design to me.
>
> The most efficient way to heat a house is to have a temperature sensor
in
every room and individual room control, with inputs from other rooms and
the
external environment.
>
> This is one sensor in one room and has intelligence built in based on
activity and settings for one single room. It will be slightly better than
the dumb thermostat in my current home but, it is never going to do as good
a job a properly installed heating and control system.
>
> Rob
>
>

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