Is $900 to install 3-inch vent pipes for furnace a fair price?
Project Details
I have been getting a 3-3 or 1-3 error code on my Bryant Model: 926TB60100V21A-B furnace when it gets really cold outside, around 20 degrees. The current vent pipes are 2-inch PVC, and the outlet pipe looks narrowed. An HVAC technician diagnosed the problem as incorrect furnace installation due to undersized vent pipes. This issue has been occurring since I moved into the house two years ago, causing the furnace to lock out for a few hours once a day. I'm also curious why there is a reducer in the current setup. The furnace is located in an open basement.
Quote Details
This quote is for replacing the existing 2-inch PVC vent pipes with 3-inch pipes for a Bryant Model: 926TB60100V21A-B furnace. - Furnace Specifications: 100,000 BTU, 96% efficiency - Current Vent Pipe Size: 2-inch PVC - Proposed Vent Pipe Size: 3-inch - Current Pipe Configuration: 1-90 degree elbow, 2-medium 90 degree elbows, 1-long sweep 90 degree elbow, 4-45 degree elbows, 14 feet of 2-inch pipe - Problem Addressed: Furnace displaying 3-3 or 1-3 error codes in cold weather due to undersized vent pipes, as diagnosed by an HVAC technician
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More Details
Category
HVAC
Price
$900
Quote Date
November 29, 2025
Brand/model
Bryant 926TB60100V21A-B
BTU tonnage
100,000 BTU
Efficiency rating
96% efficiency
System type
Furnace
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