Spa
Circulation Pump?
Most circulation pumps are rated at around .4 hp to .5 hp this
equates to (746w = 1HP) 298 Watts to 373 Watts.
This means that if you run one for 24
Hours it will use 7.15 KW Hours to 8.95 KW Hours
At the current cost of electricity of
about 11 cents per unit the cost per day is 79c to 99c. This
means the total cost per year is $288 to $361
Artesian Spas use a smaller more
efficient pump 87W only using only 2KW Hours per day or 22c
per day and $79 for a Whole Year.
Do I need a
circulation pump?
Spas engineers have for years been using a
two speed pump as an alternative to a circulation pump.
Reasons:
Just as quiet as a circulation pump
One pump less to break down
The pump works on the whole system thus
better cleaning
How much filtration is necessary 3 to 4
hours per day is the recommended amount so if we use a half
speed pump what does it cost us;
A 2.5 HP pump run at half speed will
consume 923Watts x 4 hours = 3.73 KW Hours as you can see
that is around a half of what the normal circulation pumps
consumes saving you about a $150 per year. Is there any
advantages for using a circulation pump?
In reality no unless you use the 87W
variety
|
Pump
|
Rated Watts
|
KWH per day
|
KWH per Year
|
Cost
Day /Year
|
|
Circ Pump .4 HP
|
298
|
7.15
|
2610
|
79c / $288
|
|
Circ Pump .5 Hp
|
373
|
8.95
|
3266
|
99c / $361
|
|
87W Laing pump
|
87
|
2
|
730
|
22c / $79
|
|
Half speed 2.5 HP
|
932
|
3.78
|
1379
|
41c / $ 151
|
Other issues:
Noise Circulation pumps are reasonably
quiet but as with any constant noise it is annoying and it
is on all the time.
Bear in mind that as pumps age they become more
noisy The Laing
Pump almost silent
The half speed pump you can set to run
only during daylight hours
|