Test Dates:		Feb 23, 1998, to Mar 16, 1998
Pool Type:		Indoor 1500 sq.ft. Electric Heated

RAW DATA

Week #1 - Feb 23 to Mar 2

No HEAT$AVR no blanket, readings taken at noon
Makeup water - 3 hours total (Feb 24,27, & 28) backwashed on Feb 27

		Feb 23		Mar 2		Total Hours		Kilowatt Hours
Meter #1	362.4	401.6	39.2	1176
Meter #2	359.1	529.1	170	5100
Total Energy used							6276

Week #2 - Mar 2 to Mar 9

Blanket was used, readings taken at noon
Makeup water - 2 hours total (Mar 3 & 6) backwashed on Mar 6

		Mar 2		Mar 9		Total Hours		Kilowatt Hours
Meter #1	401.6	411.9	10.3	309
Meter #2	529.1	657.1	128	3840
Total Energy used							4149

Week #3 - Mar 9 to Mar 16

HEAT$AVR was used, readings taken at noon
Makeup water - 4 hours total (Mar 9, 10, 13 & 14) backwashed on Mar 13

		Mar 9		Mar 16		Total Hours		Kilowatt Hours
Meter #1	411.9	444.2	32.3	969
Meter #2	657.1	796.3	139.2	4176
Total Energy used							5145

ENERGY SAVINGS - Gross per week

		Energy Used		% Saved		$ Saved*
No blanket, no HEAT$AVR	6276 KWH	0	0
With HEAT$AVR	5145 KWH	18	78.49
With blanket	4149 KWH	34	147.61

* electricity cost of $0.0694/KWH taxes included

ENERGY SAVINGS - Gross per 50 week year

No blanket, no HEAT$AVR		$0
With HEAT$AVR		$3,924.50
With blanket		$7,380.69

There are certain costs associated with achieving the savings above whether a blanket or HEAT$AVR is chosen. Blankets cost money to buy and worker time to put on and take off. HEAT$AVR cost money too and the auto injection system has an initial cost and a 7 year lifespan.

ENERGY SAVINGS - Gross per week

		HEAT$AVR		Blanket
Purchase cost/year	$518.00	$1,140.00
HEAT$AVR pump/year	$65.00	$0.00
Employee wages*	$0.00	$1,467.00
Total	$583.00	$2,607.00

Wages: 20 min/day @ $12.70, HEAT$AVR at regular retail cost/98, blanket at current tax in quote of $3420 and testimated lifespan of three years, HEAT$AVR pump at retail with taxes and estimated lifespan of seven years.

NET SAVINGS USING HEAT$AVR OR A BLANKET

		Utilization cost/yr		Gross saving		Net saving
Nothing	$0.00	$.00	$0.00
HEAT$AVR	($518.00)	$3,924.50	$3,406.50
Blanket	($2,607.00)	$7,380.69	$4,773.69

CONCLUSION

Based on this test, it can be stated that large amounts of money can be saved by using either a standard pool blanket or HEAT$AVR. The pool blanket is more effective by $1,367.19 per year. A decision must also take into account the cost of blanket rollers and the deck space they consume.

Error Possibility

In the raw data it must be noted that there were four hours of makeup water during the week that HEAT$AVR was tested as compared to 2 with the blanket and 3 with nothing at all. It is likely that this extra makeup water on Mar. 9 relates to the previous two weeks and has skewed the effectiveness of HEAT$AVR slightly. Looking at the raw data for the #1 meter suggests that conservatively, 10 hours of heater time per week has been added to the HEAT$AVR data. This is $1,041.00 of electricity per year. (50 weeks X 10 hours X 30 KWH X $0.0694)