Basic
$402 – $1,006 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 Honolulu, Hawaii typically costs $473 to $1,183 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Honolulu are 21.0% higher than the national average for furnace humidifier.
National average: $400 – $1,000 each
$402 – $1,006 each
Bypass flow-through pad humidifier on the plenum with bypass duct, water line with shutoff, drain line, manual humidistat
$473 – $1,183 each
Bypass flow-through humidifier with bypass damper, water line with shutoff, drain, automatic humidistat with outdoor sensor
$592 – $1,479 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 | $202 – $505 | each |
| Labor | labor | $182 – $455 | each |
| Supplies & Other | supplies | $54 – $134 | each |
| Equipment & Disposal | equipment | $36 – $88 | each |
Labor costs in Honolulu run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local furnace humidifier contractors in Honolulu for personalized quotes based on your specific project.