For full system planning, use the WattSizing Calculator.
Quick Answer
In tiny houses, mini splits often run around 300-900 W, with 2-6 kWh/day typical.
Detailed Explanation
Small spaces benefit from inverter modulation, but oversized systems can short-cycle and lose comfort quality. See What Size Generator for Tiny House and How Many Watts Does a Mini Split Use Per Day.
Watt Table
| Tiny-House Condition | Running Watts | Daily kWh |
|---|---|---|
| Mild climate | 300 - 600 W | 2 - 3.5 |
| Typical | 450 - 800 W | 3 - 5 |
| Hot afternoon load | 650 - 900 W | 4.5 - 6 |
Calculation Example
650 W x 5 h/day = 3.25 kWh/day.
Tips
- Right-size BTU; avoid oversizing.
- Shade windows and roof surface.
- Keep indoor head away from obstructions.
- Use schedule mode for occupancy patterns.
FAQs
Is one indoor unit enough for loft plus main floor?
Sometimes, but airflow path is key.
Does tiny-house insulation change AC sizing a lot?
Yes, usually more than appliance brand choice.
Can it run from small solar systems?
Often yes with good load management.
CTA
Test tiny-house scenarios in the WattSizing Calculator.
