The LG Electronics LS-L1210HL is an efficient 12,000-Btu wall-mounted air-conditioner and heater. A mini-split heat pump, its outdoor component (the compressor) runs on normal household current. The indoor component (fan and filter) runs on low-voltage (36-volt DC line).

Installation requires only a 2-inch port hole through the wall to join the two parts and can be done by a do-it-yourself homeowner. Such duct-free units are ideal for homeowners who want to rid their home of unsightly window units. They're also good solutions for three-season rooms that need supplementary cooling in summer and heat in winter.

Larger spaces or rooms can be accommodated by similar dual or tri-zone multi-split products from LG Electronics.

Because the compressor is outside, the LG Electronics LS-L1210HL is quiet. The interior fan is exceptionally quiet as well and does a good job at air distribution thanks to its computer-controlled, random-movement vanes. This unit includes a 24-hour timer and a remote control.

Warranty
2 years, parts and labor; 5 years, compressor