14.0
The Energy efficiency rating for the LG 3850 BTU Air Conditioner/Heater unit is 9.7.
At Viewpoints consumer rating website the reviews are mixed overall the Fujitsu air Conditioning has a good rating for product and a ok rating for performance. When compared to other air conditioning systems it falls in the middle.
It varies from air conditioning unit to unit. However, the exact energy usage will be on a name plate on the air conditioner. Look for a rating in either amps or watts.
When looking for a brand new fresh from the manufacturer rooftop Air Conditioning/Heating unit you should look for reviews from the manufacturer and the people that purchase them.
It depends on what type and rating of air conditioning unit you have. Aircon for small rooms rates from 600 to 1000.
If it works properly, never.
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If is a 2 stage air conditioning unit. You might want to replace the furnace.
Adding freon to an air conditioning unit should only be done by a certified technician. It is in fact illegal for anyone to add freon to air conditioning that isn't properly certified, so one would add freon by calling in a certified technician to do it for them.
To cool more than two rooms it is economically more efficient to purchase a central air conditioning unit than a wall unit. Wall units are individually cheaper than central air, but if you have to buy more than two, then it is better to buy the central air unit.
Turning off sprinklers should not burn up an air conditioning unit.