On Aug 28, 1:24*pm, wrote:
I had a Carrier Performance 93, *80,000BTU, model 58mtb installed by
Sears for $3K. The job seams to be a good installation. They installed
2 PVC vent pipes which are pitched back towards the furnace. They
installed a 'media box' which houses a fancy 4" thick furnace filter.
They installed a new thermostat.

But they did not install a PVC liner in my existing metal chimney for
my gas hot water heater. Was that necessary? The installer said no. He
said they used a PVC liner with in a brick chimney with a clay flue
but not in a small metal chimney (B-Vent?).

Was $3,000 a decent price? It still seems a bit high even though I had
one other estimate for $3,400.

Your price was OK for most box store subcontractors. Naturally, if you
had more bids there would be highs and lows, but likely no huge
deviation. the water heater vent, call your city building
inspection people to confirm code compliance. HTH

Joe