Welch's Heating and Air Conditioning

Cooling Efficiency SEER	Approximate Annual Operating Cost
6.0	$200	$300	$400	$500	$600	$700	$800	$900
7.0	175	260	345	430	515	600	690	780
8.0	150	225	300	375	450	525	605	685
9.0	135	200	270	335	400	525	605	685
10.0	120	180	240	300	360	420	485	550
11.0	110	165	220	275	330	385	440	500
12.0	100	150	200	250	300	350	405	455
13.0	90	135	185	230	280	325	370	415
14.0	85	130	170	215	260	300	345	385
15.0	80	120	160	200	240	280	320	360
16.0	75	115	150	190	225	265	300	340
17.0	70	105	140	175	210	250	285	320

To Use This Chart:
Estimate the approximate cooling efficiency of your current air conditioner. If it's more than 10 years old, the efficiency is likely to be about 6.0 SEER. Then estimate your current annual cooling cost, based on your total electric bill, eliminating the cost of your other electricity use. Use the chart to estimate how much you can save with the higher efficiency system.
Example:
If your current air conditioner has a SEER of 6.0 and your annual operating cost is $600, the cost to operate a new 14 SEER system will be approximately $260, giving you an estimated annual savings of more than $340.

Heating Efficiency AFUE	Approximate Annual Operating Cost
60%	$400	$500	$600	$700	$800	$900	$1,000
65%	365	460	550	640	735	825	915
70%	340	425	510	595	675	760	845
75%	315	395	470	550	630	710	785
80%	295	365	440	515	585	660	735
90%	255	320	385	`450	515	580	640
95%	240	305	365	425	485	545	605

To Use This Chart:
Estimate the approximate heating efficiency of your current furnace. If it's more than 10 years old, the efficiency is likely to be about 60%. Then estimate your current annual heating cost, based on your total fuel bill, eliminating the cost of other fuel use. Use the chart to estimate how much you can save with a higher efficiency system.
Example:
If your current furnace is 60% efficient and your annual operating cost is $700, the cost to operate a new 93% AFUE system will be between $425 and $450, giving you an estimated annual savings of approximately $250.