Standards-based educational estimate
Equipment Requirement Calculator
See what a realistic drying and containment setup looks like, what it implies for noise, power, timeline, and cost, and what to ask before you approve scope.
Know what should show up
Translate machine counts into disruption, power, timeline, and the right questions.
Water source
Time since event
Water extraction status
Live equipment plan
5–9
Air movers
2–2
Dehumidifiers
1–2
HEPA / neg-air
Intensity
High
Containment
Limited containment likely
Inferred class
Class 3
Power draw
30–43 amps @ 115V
Drying window
4–7 days
Confidence
Medium
What the counts imply
Aggressive drying effort
More equipment means faster stabilization but also more disruption — noise, heat, power draw, and access coordination.
How we estimated this
Expand each section to see the assumptions and formulas behind the equipment ranges.
What this means at home
Noise & airflow
5–9 air movers create an obviously active drying environment, not a subtle one.
Power draw
30–43 amps estimated. Multiple circuits likely needed; discuss outlet planning with your provider.
Heat
Dehumidifiers generate heat as a byproduct. Room temperature may rise during drying.
Timeline
Typical drying window: 4–7 days. Varies with materials, humidity, and equipment performance.
Cost range
$2,000–$4,000
Broad range. Actual cost depends on category, equipment days, demolition, and provider pricing.
Questions to ask your mitigation provider
- What category and drying class are you using, and what readings support that?
- How many air movers and dehumidifiers are being placed, and what size/class are they?
- What is the target humidity or drying goal, and how often will readings be logged?
- If containment is recommended, how will negative pressure or filtration be maintained and documented?
- What daily documentation should I expect (photos, moisture readings, equipment logs)?
Homeowner preparation checklist
- Identify which circuits serve the affected area — equipment may trip breakers.
- Plan for noise and restricted access during drying (average 3–5 days).
- Photograph all affected areas before equipment placement for documentation.
- Ask for daily moisture readings in writing — this supports insurance documentation.
- If you smell something musty but do not see mold, mention it to your provider.
Equipment Explanation
Add notes about your situation. The AI will combine your context with the computed equipment plan to draft a plain-English explanation you can share with a spouse, landlord, or adjuster.
AI explains your result in plain English. It does not generate equipment counts or safety instructions.
How this calculates
Dehumidifier count uses the IICRC initial dehumidification recommendation formula: room cubic footage divided by a published chart factor (which varies by equipment type and drying class) to get total pints-per-day needed, then divided by a reference unit capacity.
Air mover count uses area-based heuristics common in restoration practice: one mover per 300–400 sq ft of floor depending on material, plus adjustments for wet walls, multiple rooms, and cavity spaces.
HEPA/negative air units (when indicated) use a volume × ACH / 60 formula to compute required CFM, with a safety margin for filter loading and ducting losses. ACH baselines reference Minnesota negative pressure guidance (4 ACH standard, 6 ACH aggressive).
Containment thresholds follow EPA mold remediation guidance: limited containment for 10–100 sq ft of mold, full containment for areas exceeding 100 sq ft.
Cost ranges are broad planning estimates from consumer sources and vary widely by category, market, equipment days, and provider.
Sources: IICRC published dehumidification recommendation factors, EPA mold remediation guide, Minnesota negative pressure guidance, CDC flood safety guidance.
Export and share
Turn this result into a professional report
Download a premium PDF or email a polished copy to yourself, a spouse, landlord, property manager, insurer, or adjuster.
Trust layer
Education, not a field calculation
This tool is built for personal planning use. We do not collect your submitted data for marketing. Equipment counts are educational estimates — final deployment depends on field readings and professional judgment.
Provided by Palm Build (palmbld.com) · Built by Nine Lives Development (ninelives.dev)
Standards-based estimate only. Field verification, psychrometrics, and machine-specific capacities determine actual deployment.
Category 3 / contaminated losses and larger mold areas usually require more conservative controls than a simple machine count can capture.
Cost ranges are broad planning estimates. Actual cost depends on category, equipment days, demolition scope, and provider pricing.
Drying goals should be validated with moisture measurements and documented readings.
Sources: IICRC published dehumidification recommendation factors, EPA mold remediation guide, Minnesota negative pressure guidance, CDC flood safety guidance.
Want a pro to verify this on site?
Palm Build can validate equipment, containment, and drying scope with field readings.
Common questions
How many air movers do I need for water damage?
A common starting point is one air mover per 300–400 sq ft of affected floor, with additional movers for wet walls, multiple rooms, and cavity spaces like basements or crawl spaces. This tool estimates a range based on your specific situation.
Do I need a dehumidifier for water damage?
Almost always, yes. Air movers evaporate moisture from wet surfaces, but dehumidifiers remove that moisture from the air. Without dehumidification, you are just moving wet air around. This tool uses the IICRC initial dehumidification recommendation to estimate how many units are appropriate.
When is containment needed?
EPA mold remediation guidance suggests limited containment for 10–100 sq ft of mold and full containment for areas exceeding 100 sq ft. Category 3 (contaminated) water events also typically warrant containment to control the spread of contaminants during demolition.
What is Category 3 water?
Category 3 refers to grossly contaminated water that may contain harmful agents — sewage backup, river flooding, or water that has been standing long enough to become unsanitary. It requires PPE, containment, and professional controls, not just fans and dehumidifiers.
Can mold start within 48 hours?
EPA guidance emphasizes that mold can begin to grow on wet materials within 24–48 hours. This is why rapid drying is critical and why this tool flags events older than 48 hours as elevated risk.
Is this replacing a certified field calculation?
No. This is a planning estimate to help you understand what a serious setup might look like. Actual deployment depends on field readings, psychrometrics, machine-specific capacities, and professional judgment.
Can I export and share this report?
Yes. Every Palm Build tool is designed to produce a polished PDF and an email-friendly summary so you can share it with a spouse, landlord, property manager, insurer, or adjuster.
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