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Ductless Zone and Outdoor Capacity Check

Compare zone heating and total, sensible and latent cooling loads with allocated indoor capacity and simultaneous outdoor performance.

Use this result well

Inputs that matter
Zone loads and allocated capacities, Simultaneous outdoor heating output (Btu/h), Simultaneous outdoor total cooling (Btu/h), Simultaneous outdoor sensible cooling (Btu/h), and 1 more
Output to expect
Ductless zone and outdoor capacity 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

Ductless zone and outdoor capacity check

Compare documented zone loads with the capacities allocated to those zones for the proposed equipment combination. Check the outdoor unit's simultaneous capacity separately. Use heating data at the heating design condition and total/sensible cooling data at the cooling design condition; nominal indoor-unit labels are not allocated capacities.

Each difference = applicable capacity − design load; latent cooling = total − sensible. Outdoor differences use summed zone loads.

Updated: September 2026

Example Scenarios

The built-in example is an arithmetic illustration. Replace it with your own verified measurements or planning assumptions.

→ 0 zones with an entered capacity deficit

FAQ

No. Use manufacturer-allocated capacity for the exact combination and conditions, and check the outdoor unit separately. Review every heating, total, sensible and latent deficit with the designer.

Use the actual source documents, units and operating conditions shown in the selected mode. Replace illustrative examples with your records, enter explicit zeros only where valid and retain unresolved assumptions.

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

About Ductless Zone and Outdoor Capacity Check

Compare documented zone loads with the capacities allocated to those zones for the proposed equipment combination. Check the outdoor unit's simultaneous capacity separately. Use heating data at the heating design condition and total/sensible cooling data at the cooling design condition; nominal indoor-unit labels are not allocated capacities.