Drying-equipment calculator
Air movers and dehumidifiers.
Water · Calculator
Free · no login
Product overview
Enter the affected floor area, ceiling height, and water class and this tool sizes the air movers and dehumidifier capacity a structural drying setup needs. Reach for it when you are scoping a Cat-1 or Cat-2 loss and want a defensible equipment count on the estimate before the crew mobilizes — or when you are checking a contractor's mitigation invoice against the room it dried. The output gives an air-mover range and a dehumidifier count you can carry straight into a line item.
Air movers follow the IICRC S500 rule of one unit per 50–70 SF of affected floor, so the tool returns a range (floor SF divided by 70 on the low end, by 50 on the high). Dehumidifier load uses the cubic-foot method: room volume (floor SF × ceiling height) divided by a class factor — 100 for Class 1, 40 for Class 2, 30 for Class 3 — yields required pints per day. Dividing that by your unit's rated capacity (default 110 PPD) gives the dehumidifier count. Higher classes carry more evaporation load, so they draw more grains and more equipment.
Product details
- Sold by
- Mensuria
- Product category
- Free field tool · Calculator
- Delivery method
- Web app · no login
- Cost
- Free
Highlights
- Deterministic — the same inputs give the same result, every time.
- Built for the trade, sized to feed Xactimate line-item quantities.
- Free — no login, no card.
- Works from a phone at the loss.
Vendor insights
Mensuria writes a neutral scope built to survive review — every line item sourced to a photo, anything unprovable held back and flagged for you. It never files the estimate; a licensed adjuster confirms every line and stays the adjuster of record. Mensuria is independent and not affiliated with Verisk or Xactimate; “Xactimate-ready” means the worksheet is organized for Quick Entry.
Pricing
This tool is free — no login, no card. The full scope-drafting product is priced below; your first claim is free.
Details
Delivery method
Mensuria is a web app — nothing to install. You work a claim in the browser and export a room-grouped, Xactimate-ready worksheet (codes, quantities, descriptions) organized for Quick Entry. There is no native .ESX import; you key the reviewed line items into Xactimate and stay in control.
Terms and conditions
Use of Mensuria is subject to our Terms of Service. Your first claim is free with no card; paid plans are billed monthly and cancel anytime.
More from this vendor
Field photos and a few measurements in; a defensible, Xactimate-ready scope out — every line item sourced to the photo that supports it.
Run an estimate you wrote — or a contractor's — past Mensuria for gaps, missed scope, and the companion line items a loss like this usually carries, before you settle. Free for a limited time, no login.
43 calculators and field references for the numbers you work out on site — drying days, roof squares, depreciation, O&P, flood cut, and more. No login, no claim required.
Support
Support
Reach the team at support@mensuria.com . You will hear back from people who have written a scope, not a ticket queue.
Onboarding
Your first claim walks you through capture, draft, review, and export step by step, so you are productive on claim one — no training required.
Refund policy
Monthly plans cancel anytime; the CAT Season Pass is a one-time add-on with no commitment.
Common questions
S500 guidance is one air mover for every 50 to 70 square feet of affected floor, plus one per pair of inside corners and offsets on the layout. This tool applies the 50–70 SF band to your floor area and returns a low-to-high range. Use the high end for Class 3 losses, wet carpet with pad, or rooms with heavy furnishings that block airflow; the low end is defensible for open Class 1 spaces. Always document the actual placed count in your photos so the equipment line matches what was on site.
The cubic-foot method sizes dehumidification off room volume rather than floor area. You take floor SF times ceiling height to get cubic feet, then divide by a class factor that reflects the evaporation load: 100 for Class 1, 40 for Class 2, and 30 for Class 3. The result is the pints-per-day the chamber needs to pull. Dividing by your dehumidifier's rated capacity — an LGR unit is often around 110 PPD at AHAM — tells you how many units to set. It is the standard first-pass sizing for a low-grain refrigerant or desiccant setup.
Yes — class drives the dehumidifier count, not the air-mover count. A Class 3 loss with water from overhead and high wicking evaporates far more moisture than a Class 1 loss into a low-porosity slab, so the class factor drops (100 to 40 to 30) and required pints per day climb. Air-mover count stays tied to floor area because it is about surface airflow. When you bump a room from Class 2 to Class 3 you should expect more dehumidification capacity on the estimate, and your class call should be backed by moisture-map documentation.
This tool sizes total pint-per-day demand; the unit type is your call based on conditions. Low-grain refrigerant (LGR) units are the default for typical residential and light-commercial losses and are what the 110 PPD default reflects. Desiccant units earn their place on large-loss, bound-water materials like hardwood, plaster, and concrete, or cold environments where refrigerant efficiency falls off. Enter your unit's actual rated capacity to get an honest count, and note the equipment type in the scope so the daily equipment line reads correctly for the adjuster reviewing it.
Duration from conditions.
- Water
GPP and dew point.
Cat-1/2/3, Class 1-4.
- Water
Treatment surface sizing.