Basic
$372 – $930 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 Boston, Massachusetts typically costs $438 to $1,095 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Boston are 14.0% higher than the national average for furnace humidifier.
National average: $400 – $1,000 each
$372 – $930 each
Bypass flow-through pad humidifier on the plenum with bypass duct, water line with shutoff, drain line, manual humidistat
$438 – $1,095 each
Bypass flow-through humidifier with bypass damper, water line with shutoff, drain, automatic humidistat with outdoor sensor
$547 – $1,368 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 | $180 – $451 | each |
| Labor | labor | $178 – $445 | each |
| Supplies & Other | supplies | $48 – $120 | each |
| Equipment & Disposal | equipment | $32 – $79 | each |
Labor costs in Boston run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local furnace humidifier contractors in Boston for personalized quotes based on your specific project.