Category 3 venting for tankless water heaters

Servicetech · 03-22-14, 08:30 AM

Why is this stuff so expensive? I have a simple 8' run up through the ceiling/roof, and I'm look at $260 is material costs. Adding $260 to the $555 water heater I'm looking at puts me at $815 + the 3/4" gas line. $982 buys a condensing tankless that uses ordinary PVC pipe for venting.

The simple $225 Marey water heater can use cheap B vent, why can't other tankless water heaters use it? Europe has been using tankless water heaters for decades, are they using "Marey style" natural draft tankless water heaters over there?

03-22-14, 08:30 AM	#1
Servicetech Apprentice EcoRenovator Join Date: Nov 2013 Location: Moore Oklahoma Posts: 267 Thanks: 108 Thanked 23 Times in 21 Posts	Category 3 venting for tankless water heaters Why is this stuff so expensive? I have a simple 8' run up through the ceiling/roof, and I'm look at $260 is material costs. Adding $260 to the $555 water heater I'm looking at puts me at $815 + the 3/4" gas line. $982 buys a condensing tankless that uses ordinary PVC pipe for venting. The simple $225 Marey water heater can use cheap B vent, why can't other tankless water heaters use it? Europe has been using tankless water heaters for decades, are they using "Marey style" natural draft tankless water heaters over there? Last edited by Servicetech; 03-22-14 at 08:42 AM..