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Numbers first, products second. The same arithmetic a crew does on a clipboard: pints per day, gallons per hour at head height, air movers per wet wall.

3 pages

Technician holding a pinless moisture meter against drywall near the floor
  • Calculator

    Sump pump sizing calculator

    Measure how fast your pit fills, enter your lift and pipe run, and this calculator returns the flow you need at your actual head, with a 1.5x storm margin, and the pump class that delivers it. Most houses need less pump than they buy; a few need a lot more.

    InteractiveUpdated October 30, 2026
  • Calculator

    Drying planner: how many air movers and how big a dehumidifier

    Enter the room dimensions, the linear feet of wet wall and the class of water loss, and the planner returns an air mover count and a dehumidifier size in pints per day at the AHAM rating, using the IICRC S500 placement rules and dehumidification factors restoration crews start every job with.

    InteractiveUpdated October 30, 2026
  • Calculator

    What size dehumidifier do I need?

    Enter the floor area, ceiling height and how damp the space is, and the calculator returns the pints-per-day rating to buy, in the DOE 2019 pints printed on today's boxes, with 25 percent headroom and a crawl space mode that converts to the AHAM rating commercial units still use.

    InteractiveUpdated October 30, 2026
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