Going through the quote process for my new furnace and AC and came up with two questions:
1 - Are new refrigerant lines required or recommended? The existing system is 26 years old, still working no burned out compressor, etc. One company says they have to be replaced, other I didn't talk with on that specific subject, but their quote calls out flushing and re- using the existing ones.2 - The new furnace will be direct vent, so it leaves the gas water heater orphaned on the existing chimney that was shared with the gas furnace. Is a chimney liner required or recommended? Chimney is clay flue lined, most of chimney is entirely within the house, except the last 5 ft or so which is in a wood siding chase above the roof line. Don't have the exact measurements of the flue without going on the roof, but guessing it's about 9 X 6 or so. Again, one company says must do, the other says not needed.