I purchased this unit in May 2012. I used it to cool my apartment for almost four months. I started using the unit's supplemental heating feature in September 2012. At that time, I noticed that whenever the temperatures outside plunged BELOW 45 degrees Fahrenheit, a BURNING SMELL would come from the unit while operating in the supplemental heat mode... and when that happens, the unit provides little to no heat whatsoever! The unit indicates that its supplemental heating feature provides you with an additional heat source "when needed." But what it SHOULD indicate is that its supplemental heating feature provides you with an additional heat source "only when the outside temperatures are 45 degrees Fahrenheit or HIGHER." When I brought this issue to the attention of the manufacturer of this unit (Electrolux Major Appliances), the manufacturer completely disregarded the issue! I had to contact a DIFFERENT air conditioner manufacturer (Friedrich Air Conditioning Co., Ltd.) in order to find out the TRUTH about this unit! This unit is a HEAT PUMP heating unit, rather than a STRAIGHT ELECTRIC heating unit. STRAIGHT ELECTRIC heating units can operate efficiently EVEN WHEN OUTSIDE TEMPERATURES ARE BELOW 45 DEGREES FAHRENHEIT. This unit is NOT a STRAIGHT ELECTRIC heating unit, but is instead a HEAT PUMP heating unit, which means that the outside temperatures must be 45 degrees Fahrenheit OR HIGHER in order for this unit's heating feature to operate. According to Friedrich Air Conditioning Co., Ltd., attempting to use HEAT PUMP heating units when outside temperatures are below 45 degrees Fahrenheit will OVERWORK THE COMPRESSOR and can cause a BURNING SMELL to come from the unit while operating... essentially shortening the lifespan of the unit. So if you are looking for a unit that can provide supplemental heating IN MORE EXTREME COLD TEMPERATURES, then this is NOT the appropriate unit for you!Save $0.99 Off
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