Basic
$402 – $1,207 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 Honolulu, Hawaii typically costs $473 to $1,420 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 built in humidifier.
National average: $400 – $1,200 each
$402 – $1,207 each
Bypass evaporative humidifier on the furnace plenum with bypass duct, manual humidistat, water line and drain
$473 – $1,420 each
Larger-capacity bypass humidifier with automatic digital humidistat and outdoor temperature sensor, water line and drain
$592 – $1,775 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 | $202 – $605 | each |
| Labor | labor | $182 – $546 | each |
| Supplies & Other | supplies | $54 – $161 | each |
| Equipment & Disposal | equipment | $36 – $108 | each |
Labor costs in Honolulu run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local built in humidifier contractors in Honolulu for personalized quotes based on your specific project.