My heat pump began tripping the breaker during the winter. This usually means a compressor is failing, from my experience with 1 failed central a/c and 2 failed heat pumps in the same house for 25 years. In about 1988 we replaced our central air conditioner with a Trane heat pump dual system paired with our existing Bryant furnace. This included a then high tech switching mechanism from Trane. The Trane heat pump failed within 4 years and it was replaced with a Janitrol heat pump using the same control mechanism from Trane. The Trane heat pump blew the compressor within 4 years, 1 year after the three year warranty and due to low funds at the time it was replaced with a Janitrol heat pump, now going under the Goodman name and the cheapest at the time. This is the heat pump that failed after 17 years of service. Go figure. Now Trane is considered high quality and reliable, but I will buy a Goodman before a Trane any day after my real world experience. Anyway, the Janitrol lasted a long time and in the interim a Carrier oil furnace replaced the Bryant oil furnace using the same Trane control box (Trane made good dual fuel control boxes anyway). I asked for estimates when the heat pump began tripping the breaker but every one wanted to replace everything and since everything worked fine except the heat punp condenser (outside unit) I called Tom and he gave me an estimate for a modification and a complete change of the whole system. I told him they were both too expensive (3K and 4K) and over the phone he agreed that changing the heat pump out for $1,600 was doable and my least expensive option. He (and two sons) came by this afternoon and installed the heat pump by labelling the wires he removed from the old heat pump and the system was up and running within 4 hours. $1,600 with a heat pump that goes for about $1,100 on the internet.