Basic
$333 – $833 each
Bypass flow-through pad humidifier on the plenum with bypass duct, water line with shutoff, drain line, manual humidistat
Install a bypass or flow-through whole-house humidifier on an existing furnace, with water line, drain, humidistat and wiring.
Furnace Humidifier in Portland, Maine typically costs $392 to $981 each 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 furnace humidifier.
National average: $400 – $1,000 each
$333 – $833 each
Bypass flow-through pad humidifier on the plenum with bypass duct, water line with shutoff, drain line, manual humidistat
$392 – $981 each
Bypass flow-through humidifier with bypass damper, water line with shutoff, drain, automatic humidistat with outdoor sensor
$490 – $1,226 each
Fan-powered flow-through humidifier for higher output, water line with shutoff, drain, digital humidistat with outdoor sensor
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $175 – $437 | each |
| Labor | labor | $140 – $350 | each |
| Supplies & Other | supplies | $47 – $116 | each |
| Equipment & Disposal | equipment | $31 – $77 | each |
Connect with local furnace humidifier contractors in Portland for personalized quotes based on your specific project.