Everyone we dealt with at O'Donnell was friendly, helpful, didn't give up and knew when to aks for help from the furnace manufacturer's tech support We had an intermittent problem with the furnace not bringing the house to the set temperature. This happened over several months and usually worked well when the service guys came to the house - as happens with intermittent problems. It was finally resolved when they replaced the circuit board, which was one of the suggestions from tech support. It has worked fine since then. Every time I called for help the service guys came the same day, sometimes within one hour.
