Alde
Alde designs and builds wet (water-based) central heating systems for caravans and motorhomes. Rather than blowing warm air, an Alde system circulates a water-glycol mix through convectors and radiators, spreading gentle, even heat throughout the vehicle. Many British caravan and motorhome manufacturers fit Alde as original equipment.
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How Alde wet heating works
A central boiler warms a water-glycol mix, and a 12-volt pump moves it to convectors and radiators around the vehicle. The heat rises by natural convection and warms the interior evenly, with no fan noise. Because water holds heat far longer than air, the caravan stays comfortable long after the system cycles off.
Servicing and common Alde heating questions
Like any central heating, an Alde system benefits from regular servicing and an occasional antifreeze check. Owners often look into topping up or changing the fluid, bleeding the system and understanding the control panel; the sections below cover the parts and consumables involved.