As promised in my earlier thread, "Truth or Fiction" I'm back with a question about a replacement heat pump. To recap I have a 5-ton roof-top packaged Trane that has failed for the fourth time, this time with a second leaking evaporator coil. This was "repaired" with stop leak and a recharge of very expensive R22. I have bids from a contractor who I believe will do a good job and seems trustworthy. He has offered three options, one Rheem, another American Standard and a Bosch. I'm not interested in the Rheem so it's down to a choice between the American Standard, 4WCZ6060B1000A or the Bosch BRB-60HWD1N1-M19. I know we can't discuss prices, but the difference is a push. Three years of service and warranty repair are included in either bid.
As a techie (retired EE) I'm leaning toward the Bosch. There are several contractors on Youtube that seem to push them but one of them just changed his tune after not being able to repair one he installed, for lack of parts (a motor). He's beside himself because Bosch is still turning out units, with the same motor, while claiming a shortage of motors. Is this problem unique to Bosch and/or is it widespread?
One further issue is the inverter driven motor. Generally speaking inverters, solar panel optimizers and the switch-mode power supplies found in everything these days are prolific generators of radio frequency interference (RFI). As a radio amateur (ham) operator I'm concerned about this. I have contacted Bosch about this and they gave me a shrug. I have looked at the schematic of their inverter driver and see a couple of toroids on the line input, so they have seemed to make a nod toward controlling this, but I have no idea how effective this might be. Does anyone have a clue?
I welcome opinions on either option, realizing that opinions are like...
Thanks Wes
As a techie (retired EE) I'm leaning toward the Bosch. There are several contractors on Youtube that seem to push them but one of them just changed his tune after not being able to repair one he installed, for lack of parts (a motor). He's beside himself because Bosch is still turning out units, with the same motor, while claiming a shortage of motors. Is this problem unique to Bosch and/or is it widespread?
One further issue is the inverter driven motor. Generally speaking inverters, solar panel optimizers and the switch-mode power supplies found in everything these days are prolific generators of radio frequency interference (RFI). As a radio amateur (ham) operator I'm concerned about this. I have contacted Bosch about this and they gave me a shrug. I have looked at the schematic of their inverter driver and see a couple of toroids on the line input, so they have seemed to make a nod toward controlling this, but I have no idea how effective this might be. Does anyone have a clue?
I welcome opinions on either option, realizing that opinions are like...
Thanks Wes
