View Full Version : Estimate of Monthly cost of powering a chiller

13th Dec 2006, 10:15 PM
I noticed alot of people are concerned over the electric bills if they keep a Chiller... So I'm posting this as a guide to calculating the electric bills...

A X B (Hours) = C
? X E = [(? X E) X C] / (A X B) - ? is the wattage for your Chiller


180W X 24hrs = $28.05 / month
300W X 24hrs = [(300 X 24) X 28.05] / 180 X 24 =
= (7200 X 28.05) / 4320
= $46.75

I got the info from the PUB (Public Utilities Board) website basing on a Fridge hence the 180w example... Like I said this is a guide but I feel that you can have a fairly accurate way to calculate the amount of money you need to pay per month for the electricity bills...

I know the Chiller does not run 24 hrs so you can estimate the number of hours it will run per day... At least you will have an idea how much it would cost to run it per month... For 24hrs at least you will know that this is the most it would cost you...

Hope this helps...

13th Dec 2006, 10:49 PM
Great job! This is very useful information for anyone who is thinking about or has been using a chiller;)

14th Dec 2006, 10:18 AM
To simplify your equation, the 24's cancel each other out. That leaves


You can take this further... $1.55 per day with the 300W example.

This, of course, does not apply to everyone as charges vary based on location.

14th Dec 2006, 11:44 AM
Great info, thanks.

14th Dec 2006, 12:03 PM
Just an additional note... The equation is based on a home fridge which is why it is switched on for 24 hours... The Chiller should not be switched on for 24 hours... So you can substitute the estimated hours of your chiller running ie. 12 hours, into the equation...

31st Dec 2006, 01:33 PM
I do agree that you do not on chiller for 24hours but do count in the standby also.