Here is the Email I sent them and what I got back:
-----Original Message-----
Sent: Saturday, May 02, 2009 9:42 AM
Hello,
I was looking at your chart of coefficient of performance and noticed that
it does not give the most common ambient temperature that surrounds a
water
heater, that being the 55F of a basement and so I was wondering what that
number is.
I would also like to know how well your product works with a timer as I
currently have my water heater come on for two hours in the morning and
two
hours in the evening, would this void my warenty or cause any other problems?
>>>>>
We appreciate your interest in our AirTap product!
The testing for our unit's ratings were done per Department of Energy
guidelines with the water temperature being 58'F, and the ambient air
temperature being 68'F. This testing resulted in a COP of 2.5.
We've attached the AirTap informational flyer with the COP at different
temperatures. At 40 F, the COP drops 20% to 2. It is recommended that the
AirTap be operated at temperatures of 50 F and higher for greatest
efficiency. While we do not have an exact COP for 55 F, we do know it will
be between 2 and 2.5.
Also, running your AirTap with an electrical timer should cause no problem
with the AirTap's operation, and will not void your warranty. Just make
sure that the timer supplies the AirTap with a dedicated 15 amps of 110V
current so that there are not any current allocation issues.
Thanks, and if you have any further questions, please feel free to contact
us here at the Sales & Support Center!
-Jason
Jason Baker
AirGenerate Support Center
713.574.6729 option 2
support@airgenerate.com