Whole-House Dehumidifier Cost Calculator
Estimate the cost of installing a whole-house ducted dehumidifier based on capacity, installation type, and location.
A whole-house dehumidifier installation costs $1,700 to $4,200, with a national average of $2,800. Use the calculator below to estimate your cost by size, quality tier, and location.
Last updated: March 25, 2026
Whole-House Dehumidifier Cost Calculator
Estimate the cost of installing a whole-house ducted dehumidifier based on capacity, installation type, and location.
Estimated Total
$2,400
Itemized Breakdown
This calculator provides estimates based on national averages adjusted for your region. Actual costs may vary significantly based on specific project conditions, contractor availability, material prices, and local market factors. Always get at least 3 quotes from licensed, insured contractors before starting your project.
Want the full picture?
Read our complete Whole-House Dehumidifier Installation cost guide with material comparisons, contractor tips, savings strategies, and regional pricing data.
Quick Cost Reference
Cost by Tier
Basic 70-pint whole-house dehumidifier tied into existing ductwork with gravity drain
90-pint ducted dehumidifier with dedicated return, condensate pump, and humidistat controls
High-capacity 130+ pint commercial-grade unit with dedicated ductwork, smart controls, and whole-house coverage for 3,000+ sq ft
How This Calculator Works
This whole-house dehumidifier cost calculator estimates your total project cost from four inputs: project size, quality tier, the options you select, and your location. It combines material and labor rates for your chosen tier, adds typical permit costs, then applies a regional cost multiplier so the estimate reflects pricing in your state.
Estimates use 2026 cost data cross-referenced from multiple industry sources. Treat the result as a planning range, not a quote. Your final price depends on your specific scope, material choices, and local contractor availability, so collect at least three itemized bids before you set a budget.
What Affects Your Whole-House Dehumidifier Installation Cost
Unit Capacity (Pints per Day)
$400 - $1,500A 70-pint unit costs $800-$1,200 and covers 1,500-2,500 sq ft. A 90-pint unit runs $1,200-$1,800 for up to 3,000 sq ft. Commercial-grade 130+ pint models cost $2,000-$3,500 for large homes or severe humidity. Matching capacity to your home size is critical.
Ductwork Integration
$300 - $1,500Connecting to existing HVAC ductwork is the cheapest option at $200-$500. Installing a dedicated return duct adds $300-$800. Running entirely new ductwork for a standalone system adds $800-$1,500. Homes without existing ductwork face the highest costs.
Condensate Drainage
$100 - $500Gravity drain to a nearby floor drain costs $50-$100 in materials. If no drain is nearby, a condensate pump ($150-$300 installed) routes water to a sink, exterior, or sump pit. Running a new drain line adds $200-$500.
Installation Location
$200 - $800Installing next to the HVAC air handler is cheapest since ductwork is right there. Basement installations are straightforward. Attic or crawlspace installations add $200-$800 for access, mounting, and longer duct runs.
Frequently Asked Questions
How much does a whole-house dehumidifier installation cost?
A whole-house dehumidifier installation costs $1,700 to $4,200 for a typical project, with a national average of $2,800. Budget projects start around $1,200, and premium work can reach $6,000. Use the calculator above for an estimate matched to your size, quality tier, and state.
How does this whole-house dehumidifier installation cost calculator work?
It combines 2026 material and labor rates for your selected quality tier, adds typical permit costs and any options you choose, then applies a cost multiplier for your state. Adjust the inputs to see your estimate update instantly.
Is this calculator free to use?
Yes. This whole-house dehumidifier installation cost calculator is free, requires no signup, and returns instant estimates.
Does the estimate include labor and permits?
Yes. Each estimate combines material and labor costs for your chosen quality tier plus typical permit fees. Your final price still depends on your specific scope and local contractor rates, so collect itemized quotes before budgeting.
How can I lower my whole-house dehumidifier installation cost?
Fix moisture sources first - sealing basement cracks ($200-$500) and improving grading may reduce your humidity enough to downsize the dehumidifier by one capacity tier, saving $400-$800 Install near your HVAC air handler to minimize ductwork costs - saves $300-$800 vs. remote locations
Free newsletter
Stay current on what renovations actually cost
Updates from CostToRenovate, when there is something worth sending. Free, no spam.