Sump Pump and Dehumidifier Sizing Calculator
Free waterproofing tool

Sump Pump and Dehumidifier Sizing Calculator

Enter floor area, lift, pipe run, ceiling height and dampness to see a planning pump flow or dehumidifier capacity for a basement or crawl space.

These tools give planning-level estimates from typical values and the details you enter. They are not quotes or engineering, legal, financial, health or code advice, and results depend on your actual property, soil, water, household and choices. No tool or system can promise a dry space. Only a conversation and a visit can confirm what a project needs, and we give you a written scope before work begins.

How it works

Four quick steps.

  1. 01

    Pick a starting point

    Each preset loads a sump pump, a basement dehumidifier or a crawl space dehumidifier.

  2. 02

    Choose the space

    The inputs change for each kind of equipment.

  3. 03

    Enter your numbers

    Floor area, lift, pipe run, ceiling height, dampness or sealing.

  4. 04

    Read the summary

    See a planning flow or capacity, a unit class, drain and pit notes.

Tips

  • Measure the floor area and check how damp it feels in humid weather before you start.
  • For a pump, read the maker pump curve. Flow at your head matters more than the headline number.
  • We turn your numbers into a written scope at your Free Waterproofing Inspection.
Questions

About this tool.

Are the numbers exact?

No. They are planning rules of thumb. Makers publish their own sizing charts, and your site decides the real numbers.

Does it pick a brand?

No. It gives a size class. We install the brand that suits your site, or the one you prefer.

Can I use it for budgeting?

It helps you size equipment. The budget planner turns projects into a ballpark range.

Free Waterproofing Inspection

Ready for a basement that stays ready?

Call us and describe what you have seen. We will visit, find the source of the water and give you a clear written plan.

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