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If your air conditioning unit is more
than 10 years old, there is a high probability that it is not SEER rated.
And, if it's a few years old, it's probably rated at SEER 9 or SEER 10. So,
what does all that mean?
The United States Environmental
Protection Agency now requires that all new residential
systems manufactured in 2006 and beyond have a minimum SEER rating of 13 (although
window-box systems are exempt from this law, so their SEER rating is still around 10).
Substantial energy savings can
be obtained from the more efficient systems. For example by upgrading from SEER
9 to SEER 13, the power consumption is reduced by Thirty Percent (30%).
It is claimed that this can result in an energy savings valued at up to $300 per
year (depending on the usage rate and the cost of electricity). In most
cases, the lifetime energy savings is greater than the initial cost of a
high-efficiency unit. In other words, "the unit pays for itself over
a period of time."
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