Sanyo HVAC has increased its compressor warranty from five years to six years.

The company is citing the reliability of its new high-efficiency models for the longer warranty.

"For many years, our air-conditioning products have consistently demonstrated high reliability of use," said Tom Crock, vice president of Sanyo's air-conditioning division. "We believe all of Sanyo's models that use the R-410 refrigerant are more reliable and because of that we are able to extend the compressor warranty to six years."

The new warranty is six years on the compressor and one year for parts.

Sanyo introduced a redesigned line of air conditioning and heat pump products this year. Features of the new line include inverter technology, which provides rapid heating and cooling capacity due to the variable compressor-rotation speed.