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Air conditioning in motorhomes: 4 modern techniques improve off-grid cooling

16.05.2026 12:00 1 min 1 source
PROMOBIL DEU
Air conditioning in motorhomes: 4 modern techniques improve off-grid cooling
© PROMOBIL

Promobil magazine described four technologies that allow air conditioning in a motorhome to operate without shore power. Key components: a powerful inverter (with priority switching circuit), a lithium iron phosphate battery (LiFePO4) with at least 300 Ah capacity, an inverter air conditioner with a variable-speed compressor, and Dometic's N-Bus management system. The new Dometic FJZ7 in Smart Eco mode can run from battery for up to 6.5 hours, and the system automatically reduces power as charge drops, preventing a complete shutdown.

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Air conditioning in motorhomes: 4 modern techniques improve off-grid cooling

16.05.2026 PROMOBIL DEU

🇩🇪 Germany — fuel prices

Updated: 13.06.2026

Diesel

$2.13 /l

€1.84 · £1.59/l

112 of 132

pricier than 84% of countries

Petrol

$2.21 /l

€1.91 · £1.65/l

120 of 134

pricier than 89% of countries

LPG

$1.33 /l

€1.15 · £0.99/l

46 of 48

pricier than 94% of countries

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Best regions in the coming days

Baden-Württemberg +25°·54 km/h
88
Bavaria +25°·38 km/h
88
North Rhine-Westphalia +24°·43 km/h
87
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85
Lower Saxony +22°·49 km/h
84
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81
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Expert Dominic Vierneisel from Promobil magazine gave advice on cooling motorhomes in hot weather. Key measures include using external aluminum-coated thermal mats that reflect sunlight and roof vent fans for rapid air exchange. White body color reduces heat absorption, and an awning provides shade at the entrance. Running the air conditioner while away is discouraged due to noise and energy consumption.

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