I have a 6 year old FHP ES035 installed in my home. I have had multiple problems with the unit over the years. This time, according to the technician, the blower motor is dead and needs replaced at a cost of 1400. Is this reasonable? Is this an easy part to replace? A little frustrated at this at the moment as I spent a good deal on this thing just 6 years ago and never really saw any energy savings, only headaches. Thanks in advance for the assistance.