From: "Richard" 
Newsgroups: misc.consumers.house
Subject: Re: electric heaters
Date: Sat, 03 Jan 2004 15:36:27 GMT

Your at the mercy of Ohm's law when it comes to electric heating. The basic
method on how the total wattage is applied and how much of the generated Btu
escapes determines how efficient it is. If you had a perfectly insulated
room you could eventually reach 1000F with an 100 watt electric light bulb.

Finned elements provide the fastest response. Add a circulation fan for a
faster response. The oil filled heaters still use convention, they just have
a liquid conduction buffer between the element and the air.

Use a ceiling fan to circulate the hot air off the ceiling.
Limit the amount of exposed glass windows.
Or....become a snowbird and move South.

Richard
Houston, TX


"Smokeyone"  wrote in message
news:124432c0.0401022259.7ed367a5@posting.google.com...
> I realise all electric heaters put out the same amount of heat for the
> same number of watts but is there any efficiency difference between
> oil filled heaters and convector heats.
> I need close to 4kw for a room 20ft by 13ft so I figure I am looking
> for two heaters wall mounted.
>
> Thanks
>
> Smokeyone
>
> to e-mail me, delete mail from address