Had furnace (forced hot air) serviced last fall. Three days later the heard horrible noise. WMS serviceman told me the powervent was demolished and it had nothing to do with the maintenance service they provided 3 days early but was caused by the system. A system they installed because of a problem with combustion. Actually was given three different explanations. Ended up paying $330 for a new motor after i had just paid $250 for maintenance. Jan 1, no heat. Jan 2 WMS said no problem with the system then on further investigation a... read full review »