Defaults reflect this space type. Same engine as the main calculator.
| Cooling load | — |
Manufactured homes combine the three worst load multipliers: 2-inch wall cavities (a fraction of site-built insulation), belly-run ducts that can leak 20–30% of cooled air outside the envelope, and low thermal mass that tracks the afternoon sun in real time. The estimate below defaults to poor insulation, sunny exposure and roof gain accordingly.
Older units use dedicated mobile-home packaged systems (different coil/airflow specs than site-built — don't substitute); newer retrofits increasingly skip the leaky belly ducts entirely with one or two mini-split heads, often cutting bills 30%+ at the same comfort. Seal and insulate the belly before upsizing anything.
A typical mobile / manufactured home (~900 sq ft) needs about 32,652 BTU/hr — a 3 ton unit in moderate US conditions; hot climates run 15–25% higher.
Plan on roughly 32,652 BTU/hr for a typical ~900 sq ft mobile / manufactured home in a moderate climate, with the space-specific factors described on this page already included. Hot climates (Zone 1–2) add 15–25%.
Not interchangeably — manufactured homes need units rated for their duct static and airflow specs, and many jurisdictions require listed mobile-home equipment. Mini-splits sidestep the duct problem entirely.
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