What size mini-split for a 30 ft RV?
A 30 ft RV often has 200–250 sq ft of cooled living space. At RV insulation factors, expect 7,000–9,000 BTU calculated — buy a 9,000 BTU unit minimum; 12,000 BTU is common for full-timing in hot climates.
Mini-Split Sizing for RVs & Campers
RVs and campers lose heat through thin walls, single-pane windows, and constant air leakage. We apply higher BTU-per-sq-ft factors and default to poor insulation — realistic for skoolies, fifth-wheels, and travel trailers.
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Sizing settings
Typical RV BTU ranges
A 30 ft RV with 200–250 sq ft of cooled living space often needs 7,000–9,000 BTU calculated — buy 9,000 BTU minimum; 12,000 BTU is common for full-timing in hot, humid climates.
Read what size mini-split for an RV and RV installation options before cutting holes in the shell.
Power planning
9k–12k BTU units typically need 15–20A at 110V or 220V depending on model. Full-timing requires 30A shore power or adequate inverter/generator capacity — electrical planning is as important as BTU sizing.
Roof AC vs ductless
Roof units are easier to install but noisier and less efficient at dehumidifying. Mini-splits are quieter and perform better in humid climates but need custom condenser mounting and line-set routing.
Frequently asked questions
Can I install a mini-split on an RV?
Yes — many skoolie and RV DIYers mount the condenser on a hitch rack or roof bracket and run lines to an interior head. You need 30A+ shore power or adequate inverter/generator capacity.
RV roof AC vs mini-split — which is better?
Roof units are easier to install but noisier and less efficient. Mini-splits are quieter and dehumidify better but need custom mounting and 110V/220V planning.
Related calculators
HVAC Calculators · https://hvaccalculators.net/mini-split-for-rv/