We have 1 5-ton and 2 3-ton york Stellar plus units that are around 7 years old, backed up with an Energy Kinetic System 2000 oil furnace. Things are set to switch to oil at around 40deg F. In our area of PA, PPL dereg and oil skyrocketing has us wondering if we should upgrade / change.
We would like some opinions... Our first option is Geothermal (we have plenty of land for a closed loop).. our hvac vendor seems totally against doing these? Not sure why....
The option they proposed is replacing the York Stellar Plus 12 SEER with
2 Trane XL16i 4-ton and 1 Trane XL16i 5-ton at 17 SEER. And, of course, adjusting the switchover point to oil down to around 30 deg F.
1. Is switching from the 7-yr old stellar plus to the newer Trane a good move? from efficiency/cost/longer term?
2. If we are going to spend $XXK+ to replace air-to-air systems, is a geothermal covering 12 ton worth considering? cost-unknown?