Basic
$1,156 – $3,113 each
About 100-pint-per-day whole-house unit ducted into the HVAC return, onboard humidistat, condensate to a floor drain by gravity

Photo: Dchristle at English Wikipedia · Public domain · Source
Supply and install a whole-house (ducted) dehumidifier tied into the HVAC system or a basement/crawl unit, including condensate drain.
Dehumidifier in Washington, District of Columbia typically costs $1,360 to $3,663 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Washington are 5.0% higher than the national average for dehumidifier.
National average: $1,300 – $3,500 each
$1,156 – $3,113 each
About 100-pint-per-day whole-house unit ducted into the HVAC return, onboard humidistat, condensate to a floor drain by gravity
$1,360 – $3,663 each
About 100-pint-per-day whole-house unit ducted into the HVAC return, wall humidistat control, condensate piped to a drain
$1,701 – $4,578 each
About 100-pint-per-day high-efficiency whole-house unit with upgraded filter, dedicated supply ducting, wall dehumidistat, condensate pump
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $614 – $1,654 | each |
| Labor | labor | $473 – $1,274 | each |
| Supplies & Other | supplies | $164 – $441 | each |
| Equipment & Disposal | equipment | $109 – $294 | each |
Dehumidifier with drain hose running to a basement floor drain
Photo: Rex Roof · CC BY 2.0 · Source
Find a pro to do thisConnect with local dehumidifier contractors in Washington for personalized quotes based on your specific project.