ACA/TT: Split System Aircons, Every Degree over 20 adds 15% to your powerbill?

[Lord-Data]

Can anyone provide any evidence to actually backup a claim like that? I
didnt actually watch the show myself (would take quite an effort) ..
however, my mother-in-law did, and takes it a bit seriously, and now doesn't
want us running out reverse split system (2hp mistral .. the k-mart special
they had a while back) at anything over 20 degrees.

It seems a tad rediculous tho .. we've been running it at around the 24 mark
for the last ~month and when the previous quarters bill came in, there was
nothing unusual on there compared to before we installed the unit ..

Is there any grounds to their claims?

Thanks!

 

[David L. Jones]

Can anyone provide any evidence to actually backup a claim like that? I
didnt actually watch the show myself (would take quite an effort) ..
however, my mother-in-law did, and takes it a bit seriously, and now doesn't
want us running out reverse split system (2hp mistral .. the k-mart special
they had a while back) at anything over 20 degrees.

It seems a tad rediculous tho .. we've been running it at around the 24 mark
for the last ~month and when the previous quarters bill came in, there was
nothing unusual on there compared to before we installed the unit ..

Is there any grounds to their claims?

Thanks!

Every house will be different, a large number of factors are involved.
Making general claims like that is silly.

Dave

 

[Phil Allison]

"Lord-Data"

Can anyone provide any evidence to actually backup a claim like that?

** Better make sure you have interpreted it correctly.

The "powerbill" being alluded to is the one for the A/C - not the whole
house.

It seems a tad rediculous tho .. we've been running it at around the 24
mark for the last ~month and when the previous quarters bill came in,
there was nothing unusual on there compared to before we installed the
unit ..

Is there any grounds to their claims?

** Certainly:

If the outdoor temp is say 13 degrees C while the indoor is 20C ( due to
heat produced from an A/C running in reverse cycle) then to get it up to 21
requires about 15% more energy output - which adds the same percentage to
the A/C's bill.

Still the cheapest way to heat a home by far.



.............. Phil

 

[Mr.T]

....

Can anyone provide any evidence to actually backup a claim like that?

Yep it's true, assuming a room temperature increase of about 6.6 degrees
gained solely by the air conditioner in reverse cycle.
If you assume a higher unheated room temperature, the figure will be WORSE!
However turning off the air conditioner reduces your air conditioner power
bill to zero!!

You save even more by not buying one in the first place.
(you may need to buy a warm jacket and thick socks though

MrT.