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

["White, Peter" <peter.white@xxxxxxxxxxx>]

Exactly right, it is a big step forward over here.  Based on what I've
seen, the vast majority of houses have a single stat where you set the temp
 - not programmable, just a single temp.  Newer houses, or people that have
bothered to upgrade their stats, might be able to have daily programs, or
if they're really fancy, separate programs for the weekend as well.  The
level of energy wastage, and ambivalence to it, is a really eye-opener to
someone that spent most of their life in the UK, and was more or less
conditioned to not waster energy.  Obviously, I'm in Texas and not Cali,
where they're a bit more progressive, but still.  Having built my own house
in the UK, and watched mine being built in Texas, most self-builders would
faint at what's allowed over here, compared to the UK.

If all Nest achieves is to encourage more people to use energy a little
wiser (and to do that, all they have to do is install it, it'll take care
of the rest), then it's a Good Thing.  The units are pricy, at $250 a pop,
but my leccy bill in the summer is $600 per month, and that is typically at
least 40% cheaper than everyone else I compare with in the office, so most
people will get payback within a few months.  Personally, all I get from it
is something pretty on the wall, and immunity from my flaky z-wave/Homeseer
set up.

Pete

From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of Neil
Ball
Sent: Thursday, February 09, 2012 6:13 AM
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Re: Anyone else fallen in love with the Nest
thermostat.



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%40yahoogroups.com>
[mailto:ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>]
On Behalf Of
Gavin Sallery
Sent: 09 February 2012 09:54
To: ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
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>
<mailto:ukha_d%40yahoogroups.com>
,
"davidcfromtheuk" <ukdavidc@...<mailto: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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