Got an AC installed but still not cool enough? Most likely the room size was miscalculated. If you only match the room area and ignore west-facing sun, high ceilings, and other heat sources, cooling suffers. This article walks through basic AC terminology, step-by-step room-size calculation, matching AC specs, and practical tips for common Taiwan scenarios.
Cooling Capacity: how much heat removed per hour, in kW. 1kW ≈ 860 Kcal/h ≈ 3412 BTU/h.
Power Consumption: actual electricity used while running, also in kW but different in meaning.
CSPF (Cooling Season Performance Factor): average efficiency across temperatures and loads; higher CSPF, near Tier 1, means lower power use.
Formula: length (m) × width (m) × 0.3025 = area in ping. In Taiwan's climate, budget about 0.6–0.8 kW cooling capacity per ping.
| Room (ping) | Suggested cooling capacity | Suggested tonnage |
|---|---|---|
| 2–3 ping | ≈ 2.0–2.3 kW | ≈ 0.6 ton |
| 3–4 ping | ≈ 2.5–2.8 kW | ≈ 0.8 ton |
| 4–5 ping | ≈ 3.2–3.6 kW | ≈ 1.0 ton |
| 5–6 ping | ≈ 3.8–4.2 kW | ≈ 1.2 ton |
| 6–8 ping | ≈ 4.5–5.0 kW | ≈ 1.5 ton |
| 8–10 ping | ≈ 6.0–7.0 kW | ≈ 2.0 ton |
High ceiling: 0.7–0.8 kW per ping.
West-facing sun: 0.7–0.8 kW per ping.
Top-floor addition: 1.0 kW per ping.
Too small: slow cooling, shorter compressor life, higher power use.
Too large: frequent on/off, unstable temperature, weaker dehumidification, higher upfront cost.
Many buy AC by brand or price alone, but the real key is correct room-size calculation. Acerpure CHILL SAC2 PINOKI smart inverter AC brings cool, fresh air home. Acerpure also offers an AC purchase calculator to size your home's ideal unit in one step!
This page content is translated by AI and may contain errors. Information may vary by country/region. Please refer to the final retail sales page for accurate information.
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