In the case of electric home heating, 100% of the energy which the meter measures turns to heat in the house. Almost all comes from the heater, and a tiny percentage from the resistance in the wiring. Even the energy used by the fan on a fan heater turns to heat when the bearings heat up and the air slows down due to friction. It's the laws of physics. Any inefficiency in electrical heating occurs outside the building being heated due to power station and transmission losses.
But the latter may not be useful heat - depends where the cables run.
AIH, I can! A 1kw wall heater in the hallway on 24/7.
OK, so it's only a 50-60 sqm 2 bed flat (top floor), but properly insulated (and as an individual who doesn't like his house to be "stupidly" warm [1]), perfectly possible.
Just wish it was a bit more controllable.
tim
[1] currently at 18 degrees, drops to 16 overnight, and that's with it currently being -3 outside, when it's +4 outside I actually have to turn it off overnight to stop it rising to an uncomfortable 23 in the daytime!
I think the the PP was pricing standard electric heaters, not this nonsense one
tim
And is lost warming up pipe-work in space that is not a usable room. (Though I accept there is some benefit to this)
tim
That's a bit like saying all the gas your meter reads is used.
What is important as regards practical efficiency is the end device. If it is intended to heat a room, and some of its energy input is lost elsewhere (even although this may be useful) it's not 100% efficient.
Fit a thermostat then.
:-)
So 1 kW input from yoru heater, how much is coming up from the flat below?
Look at the target market this firm and others who provide similar products aim their advertising at. The advertisements tend to be in magazines like "Yours" or free local ad publications and are aimed squarely at the retired generation who have a few thousands in savings that can be extracted by baffling elderly Woman with bullshit,their Husbands are either dead or not well enough to intervene anymore. It's not actually illegal to sell something for a large sum when something less expensive can do the same job,it's how Russ Andrews makes a living after all. If anything I think some of the publications that carry the ads are worse than the advertisers, they are full of articles warning readers not to be caught out by con men and scams but are quite happy to accept the revenue from these companies targeting some of their vulnerable readers. Bloody Hypocrites .
G.Harman
I notice they dont advertise their address
Well I can't do that cos it's rented (the flat not the heater).
But TBH I didn't think that you could actually get anything (capable of controlling a 1kW load) which is any better than the completely F***ing useless things that are integrated into the heater and have an approx 10 degree difference between turn off and turn on temps for any given setting (which in any case measures the temp 2 inches from the element not the other side of the room).
Happy to be proved wrong
tim
It's commercial premises and not heated overnight.
But in any case I would expect the insulation to be the same as that in the roof which seems to be rather good.
tim
You didn't look hard enough, "Terms & Conditions":
The address does tie up with the address in the whois record for the doamin. That is registered as a "UK Individual", mind you that is very common for business's.
Still heated though...
I doubt it why spend money on insulation between floors inside a structure? If they spend money there it will be for fire spread prevention or perhaps sound isolation rather than heat insulation.
Is this heater hardwired or plugin?
No, because conversion of gas chemical energy to heat energy can never be 100% efficient.
I'd say that depends on what you include in the system. If you've got a decent wiring setup, then for a 3kW drain at the heater, you shouldn't lose more than ten watts in the wiring. So, 99.7% efficient?
Then again. I heat the whole house, not just part of it, so for me, it would be 100% efficient.
I use one of these in my workshop to control a 2kW wall mounted fan heater:
Me too, but as far as the equivalence of electric power and heat is concerned, the universe was designed (or just happened) that way.
As far as _practical efficiency_ is concerned, a heat pump is much better than an electric heater.
More than 100% efficient, in a sense, because it pumps heat from outside air or ground, reducing the temperature there, and increasing the indoor temperature. A refrigerator in reverse. And the inefficiencies in the system just end up contributing more heat indoors. We would all be using them, if they weren't so expensive and awkward to install.
Possibly no more expensive than the over-priced heaters this thread is about...
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