Tempéra

Which portable air conditioner to choose for 30 m²?

Par , Rédactrice expert produits premium

Discover how to choose the ideal portable air conditioner for 30 m² thanks to BTU calculation, a selection of 5 high-performance models and decisive criteria for your comfort.

Which portable air conditioner for 30 m²: the essential BTU calculation

For 30 m², you need a portable air conditioner of 9000 to 12000 BTU (British Thermal Unit), or approximately 2600 to 3500 watts. This power guarantees uniform cooling in 20 to 30 minutes, even during summer heat peaks. The calculation is based on the rule: 100 BTU per m² for standard insulation, increased by 10-15% if your home is south-facing or located in an attic.

Formula adapted to your surface area

The professional method recommended by [the French Environmental and Energy Management Agency (ADEME)](https://www.ademe.fr) recommends:

In practice, 9000-12000 BTU models cover this range with safety margin for summer peaks (temperatures > 35°C).

Energy consumption and class A

A 12000 BTU class A air conditioner consumes approximately 1.2 kWh per hour of continuous use. With an average French rate of 0.22 €/kWh, count on 2.60 € per day (12 hours of use). Class B models consume 15-20% more. Investing in class A generates a return on investment in 2-3 years.

What are the 5 best portable air conditioners for 30 m²?

After analyzing performance, consumption and user feedback, here are the recommended models for this surface area:

1. **Tempéra TC-30 Reversible** (12000 BTU)

2. **Delonghi PAC N82 Eco** (9000 BTU)

3. **Midea Comfort Plus 12K** (12000 BTU)

4. **Electrolux EXP12HN1-W** (12000 BTU)

5. **AUX ASW-H12A4** (12000 BTU)

What are the decisive criteria for choosing your 30 m² air conditioner?

Beyond BTU power, three criteria transform your purchase into a lasting investment:

Reversibility: a four-season advantage

A reversible air conditioner (air-to-air heat pump) operates in heating mode in winter and cooling mode in summer. For 30 m², this option adds €80-150 to the price but reduces your heating consumption by 30-40% according to [UFC-Que Choisir's 2023 study](https://www.quechoisir.org). Recommended in temperate regions or if you currently heat with electric radiators.

Quietness: the forgotten comfort criterion

A portable air conditioner emits between 20 dB(A) (absolute silence) and 70 dB(A) (vacuum cleaner). For a bedroom or office, prioritize:

Premium Tempéra and Midea models integrate silent modes with 10-15% reduced flow.

Budget and annual operating cost

| Model | Investment | Annual consumption* | 5-year cost |

|--------|---|---|---|

| Delonghi PAC N82 (9000 BTU) | €299 | 450 kWh | €1189 |

| AUX ASW-H12A4 (12000 BTU) | €419 | 520 kWh | €1619 |

| Tempéra TC-30 (12000 BTU A++) | €489 | 480 kWh | €1689 |

| Midea Comfort Plus (12000 BTU A+) | €549 | 500 kWh | €1799 |

*Estimate: 150 days × 8h/day at average power (60%)

Special cases: attics, garden level, orientation

Air conditioner for attics (30 m²)

Attics accumulate 15-20°C more than a ground floor. Increase your calculation by +25%: opt for 12000-15000 BTU minimum. Install the indoor unit in a shaded area (under north slope if possible) and insulate the hot air exhaust ducts. Midea and Electrolux models with integrated dehumidifier better manage high relative humidity in attics.

Air conditioner for damp garden level

Garden levels present 60-75% humidity versus 45-55% normal. Choose a model with:

Check condensed water drainage: tube to outside or tank emptied daily.

South-facing or large windows

If your room receives > 4 hours of direct sunlight, increase by 15-20%: move from 9000 to 10500-11000 BTU. Install roller shutters or external blind (reduces by 10-15°C at peak). Tempéra TC-30 and AUX ASW-H12A4 handle these extreme conditions well.

Installation and warranty: technical points

Every portable air conditioner requires:

The manufacturer warranty varies: 2 years standard, 3-5 years for Electrolux and AUX. Check compressor coverage (critical part, replacement cost €200-400).

Conclusion: your ideal 30 m² air conditioner

For 30 m², invest between €350 and €550 in a 9000-12000 BTU model of class A minimum. If you're looking for:

Test before purchase: most retailers offer 14-day return if unsatisfied. Your summer comfort deserves this thoughtful investment.

FAQ

What BTU power for 30 m² exactly?

For 30 m² with standard insulation, count 9000-12000 BTU (2600-3500 W). Increase by 15-20% if south-facing, attic or recent roof. The formula: 30 m² × 100 BTU = 3000 BTU base, plus safety margin.

Is a 9000 BTU air conditioner sufficient for 30 m²?

Yes, a 9000 BTU works for 30 m² under normal conditions (proper insulation, north/west exposure). However, during heat peaks (> 35°C) or in attics, it reaches its limits. A 12000 BTU offers more comfort and saves cooling time.

What is the monthly operating cost of a 12000 BTU air conditioner?

A 12000 BTU class A air conditioner consumes ~1.2 kWh/h. With 8h/day for 30 days: 8 × 30 × 1.2 × 0.22 € = ~€63 per month. Class B models cost 15-20% more to operate.

Reversible or cooling-only for 30 m²?

Reversible if temperate region (mild winters) or current electric heating: saves 30-40% heating in winter. Cooling-only if summer air conditioning only and existing gas/oil heating. Reversible surcharge: €80-150.

Which portable air conditioner for 30 m² attic?

Attics are 15-20°C hotter. Opt for 12000-15000 BTU (increase by +25%). Prioritize models with dehumidifier (Midea, Tempéra) as attics = high humidity. Install indoor unit in shaded area.

Mots-clés : climatiseur mobile, 30m2, BTU, climatisation, guide achat