Basic
$333 – $1,000 each
Bypass evaporative humidifier on the furnace plenum with bypass duct, manual humidistat, water line and drain
Supply and install one whole-house humidifier (bypass or fan-powered) on an existing furnace, including water line and humidistat.
Built In Humidifier in Portland, Maine typically costs $392 to $1,177 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 built in humidifier.
National average: $400 – $1,200 each
$333 – $1,000 each
Bypass evaporative humidifier on the furnace plenum with bypass duct, manual humidistat, water line and drain
$392 – $1,177 each
Larger-capacity bypass humidifier with automatic digital humidistat and outdoor temperature sensor, water line and drain
$490 – $1,471 each
Fan-powered evaporative humidifier with digital automatic control and outdoor sensor, no bypass duct needed, wired to the furnace
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $175 – $524 | each |
| Labor | labor | $140 – $420 | each |
| Supplies & Other | supplies | $47 – $140 | each |
| Equipment & Disposal | equipment | $31 – $93 | each |
Connect with local built in humidifier contractors in Portland for personalized quotes based on your specific project.