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Posted by -zero on March 16, 2007, 7:20 pm
> "Steam systems are generally less efficient than hot water heating
> systems,
> but the efficiency gain of upgrading to hot water is probably not worth
> the
> expense"
>
> I have heard this asserted just about everywhere universally, without a
> single justification. Why is steam heat less efficient? Is it
> intrinsically
> less efficient than hot water-based heating systems, or is it simply
> because
> its typical installation is more wasteful?
This address all of that;
http://www.steamingahead.org/casestudies/MoreCaseStudies.php
> My guess is that steam is less
> efficient because all the old steam pipes have had their asbestos
> insulation
> removed and haven't been reinsulated since.
Where has this happened?
> Add to that the fact that steam
> is much hotter and has less heat capacity than water and you have a recipe
> for a very inefficient system.
That is opposite of the truth and incorrect at the same time;
http://www.heatinghelp.com/newsletter.cfm?Id=187
> But bad practice doesn't mean steam heat is less efficient.
>
> And what about other types of home heating systems, like forced hot air?
> How
> efficient are they? Does the energy source matter as far as efficiency
> goes?
> Are oil-burning boilers/furnaces more efficient than gas burning ones?
Spend a few days over at Google.com . It's all been asked/answered.
-zero
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