On Thu, 10 Mar 2005 21:23:44 -0000, "Mike" wrote:


"s--p--o--n--i--x" wrote in message
...
On 9 Mar 2005 16:26:11 -0800, wrote:

What's an Earth Pipe?

A pipe that runs under the garden, 4" wide, 20' long. Fan air in via it
and in summer the air will be cold.

add a heat exchanger inside the house to keep out any trace of mould
from condensation.

Less cost than ac if you diy (dig it yourself), a small fraction the
run cost and energy use.

Do these really work? Why aren't they widely used?


Probably because they really need to be about 3' down :-)
But yes they work, though I would recommend several 2' flexible pipes (the
green ones don't insulate the heat) in parallel to get more surface area.

How much cooling can you expect? Are there any sites on the internet?