Comparison Table 4





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TABLE 4

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Tankless Water Heaters ESTIMATED ANNUAL OPERATING COSTS

For Various

ELECTRIC RATES and NUMBER of HOUSEHOLD OCCUPANTS

NOTE: Estimated Annual Operating Costs are based on a 55 degree F temperature rise and typical home construction with average lengths of plumbing and pipe insulation. These costs do not reflect losses incurred due to non-insulated pipes running under a concrete slab or pipes running under a home with a non-insulated crawl space.

Electric Rates (Cents per kWh)	1 Person 40 gal./day (Annual Operating Cost)	2 Person 50 gal./day (Annual Operating Cost)	Avg./Home 64 gal./day (Annual Operating Cost)*	4 Person 80 gal./day (Annual Operating Cost)	6 Person 115 gal./day (Annual Operating Cost)
4	$79	$99	$127	$158	$226
5	$99	$124	$158	$197	$283
6	$119	$148	$189	$236	$339
7	$138	$173	$221	$276	$396
8.4*	$167	$210	$270	$333	$478
9	$179	$222	$284	$355	$510
10	$198	$247	$315	$394	$566
11	$217	$272	$348	$434	$626
12	$237	$296	$378	$473	$679
13	$257	$321	$410	$512	$738
14	$276	$345	$441	$551	$796
15	$296	$370	$473	$591	$853