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Ceiling Fan Support Rating Calculator

Compare complete fan weight, additional accessories and the manual’s minimum support rating with a documented mounting assembly and compatibility.

Use this result well

Inputs that matter
Fan and support assembly specification, Support arrangement, Exact support arrangement verified, Complete fan weight (lb), and 4 more
Output to expect
Fan support and manufacturer rating check
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Fan support and manufacturer rating check

Compare the complete installed fan weight and the manufacturer's minimum support-rating requirement with the documented support assembly. A fan can weigh less than the minimum rating required by its own manual. A luminaire box is not automatically a fan-support box.

Required documented support rating = max(fan plus additional accessory weight, manufacturer's minimum rating); check the exact approved support type separately.

Updated: September 2026

Example Scenarios

Try the built-in example, then replace its source data with your actual documented values. Retain failed comparisons and unresolved decisions.

→ Entered fan support checks fit

FAQ

Compare the complete installed fan weight and the manufacturer's minimum support-rating requirement with the documented support assembly. A fan can weigh less than the minimum rating required by its own manual. A luminaire box is not automatically a fan-support box.

Use the exact equipment, dimensions, current ratings, operating conditions and applicable requirements described in the selected mode. Unknown values are not replaced by a generic wire, device count or capacity. Illustrative examples are arithmetic examples, not an approved installation.

Save planning case keeps an explicit local history entry. Copy MD retains current inputs, source notes and interpretation; Download CSV exports the current result breakdown. Export a separate copy before changing devices or clearing browser storage.

About Ceiling Fan Support Rating Calculator

Compare the complete installed fan weight and the manufacturer's minimum support-rating requirement with the documented support assembly. A fan can weigh less than the minimum rating required by its own manual. A luminaire box is not automatically a fan-support box.