Whirlpool ups is very best.whirlpool is brand that produce various type of product like ups washing machine ets.is very popular brand.i hadnt seen an advertisment of whirlpool invertors in newspaper till wold strongly recommend this home appliance to all my readers who are yet to feel the real challenge of indian of all ups companys.it is covered for atleast 2 years under the warranty for any kind of defect in manufacturing.whirlpool is very best product