National Electric MFGTemporary power • HVAC load tools
Methodology

Electrical calculator · air mover / drying / placement

Air Mover Placement Planner

Suggest count and placement pattern for air movers in a drying room based on wet surface area and room shape.

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For flood drying, plaster drying and damp commercial spaces.

Field notes

Field notes for Air mover placement

Practical checks to run before this calculator result turns into a site decision.

Site check

Aim for circulation, not chaos

Air movers should sweep surfaces and move moisture-laden air toward drying equipment. Random fan placement can waste power and slow the job.

Site check

Leave access routes safe

Cables and fans need to be positioned so trades can move through the room without trip hazards or blocked exits.

Site check

Reposition after first readings

Moisture readings often reveal dead zones. Move air movers as the job progresses rather than leaving the initial pattern untouched.

FAQ

Air mover placement FAQ

Short answers written for UK temporary electrical and HVAC planning work.

What is the Air mover placement used for?

Suggest count and placement pattern for air movers in a drying room based on wet surface area and room shape. It is mainly for temporary HVAC, drying, cooling and site-power planning, especially where a quick pre-check is needed before selecting equipment or changing a temporary setup.

Can this replace BS 7671 design, inspection or testing?

No. It is a competent-person planning aid only. Final decisions still need current BS 7671 requirements, manufacturer data, inspection, testing, risk assessment and the actual site conditions.

What should I verify before acting on the result?

Check room volume, duct length, static pressure, intake and exhaust position, make-up air and the supply available for continuous fan operation. If any assumption is uncertain, use the result as a prompt to investigate rather than as permission to energise.

What does an amber or red result usually mean?

It normally means the margin is weak, an assumption is missing, or the load should be split, staged, moved closer to the supply, reduced or reviewed by a competent electrician before use.

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