On Dec 29, 1:02*pm, The Daring Dufas
wrote:
On 12/29/2010 11:04 AM, wrote:





On Dec 28, 11:43 pm, The Daring
wrote:
On 12/28/2010 7:39 PM, Steve Barker wrote:

On 12/28/2010 7:31 PM, Evan wrote:
On Dec 27, 8:25 pm, *wrote:
Seems like quite a reasonable experiment.

They've been using heat as a cockroach treatment for decades.
Sufficient heat for a sufficient length of time kills all stages from
eggs through larva to adults. That gives you a long time before the
population starts growing again.

I have a heat pump, no way to get that kind of temperature in my
house.

I worked at a hospital once that had bugs in the OR. The heat was
computer controlled and it was easy to command it full on with no
outside air and cook them all.

The trouble is getting the heat to all the spaces, including under
cupboards, inside hollow walls, etc.

Yeah, a hospital also has an industrial grade power plant for its
heating, cooling and emergency power production called a Trigen
system where the steam produced by its boilers is used all three
ways at the same time...

Super-heating a few rooms doesn't take all that much effort, the
stationary engineer in charge of the power plant on-duty when the
order comes in to do something like that overrides the DDC
building automation controls and commands the proper valves,
fans and dampers to remain on/closed past their alarm cut-off
points...

You would NOT be able to do that with your home heat pump
it is not capable of producing that much of a temperature
difference and it has safety devices in place to prevent it from
running too hot... You would definitely need to bring in
alternative sources of heat and utilize other heat producing
appliances to get your home up to a maintained 120 degrees...

~~ Evan

heat pump, maybe not. but gas furnace no problem.

With a gas furnace you may have to bypass the high limit safety
in the airstream passed the combustion chamber to keep the furnace
from shutting down. Of course the safety is there to shut the unit
down if too many registers are closed but the high air temperature
may do it too. Some brands are more sensitive to it than others.

TDD- Hide quoted text -

- Show quoted text -

You might have to bypass a safety on a gas or oil furnace, but
it would not do the job without resorting to screwing around with
dryer vents, moving
stoves to the center of the house, turning on electric lights, etc.
A furnace can
maintain 70 when it's 10 outside. * So it would have no problem
supplying all the heat
one needs to reach 130 when it's 95 outside.

Correction to the above. I meant to say "it (the furnace) would do
the job without resorting to
screwing around with dryer vents, moving stoves..... etc





This whole story sounds like a crock to me. * The above, plus they
bought "a bunch
of $12 fans" *to put in windows to cool the house back down... * Geez,
just open all the
windows, doors with screens, etc. *With that big of a heat
differential, air is going to move
and cool it down before too long.

The mother of a late friend of mine had medical problems and was very
frail so she kept her thermostat set to 85°F or higher because she was
cold. Her Carrier package gas unit kept tripping the high limit when
the outside temperature was 50-60°F. She had shut the register in her
late son's room and that contributed to the problem. There are some
furnaces that may not heat a house up to a level that would be dangerous
to people because of built in safeties.

That's why I said you may need to disable a safety on the furnace to
do it.