Basic
$417 – $1,083 per project
26-gauge galvanized sheet-metal plenum fabricated to fit, screwed and taped to the unit and existing trunks
Supply and install one sheet-metal supply or return plenum at the furnace/air handler, sealed and connected to existing trunks; major duct redesign extra.
Install Plenum in Portland, Maine typically costs $490 to $1,275 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Portland are 1.0% lower than the national average for install plenum.
National average: $500 – $1,300 per project
$417 – $1,083 per project
26-gauge galvanized sheet-metal plenum fabricated to fit, screwed and taped to the unit and existing trunks
$490 – $1,275 per project
26-gauge galvanized plenum with mastic-sealed seams, flexible connector at the unit, branches reconnected and sealed
$613 – $1,593 per project
24-gauge galvanized plenum with mastic-sealed seams, vibration-isolating connector, external insulation wrap, static pressure checked
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $218 – $567 | job |
| Labor | labor | $175 – $455 | job |
| Supplies & Other | supplies | $58 – $151 | job |
| Equipment & Disposal | equipment | $39 – $101 | job |
Connect with local install plenum contractors in Portland for personalized quotes based on your specific project.