How it works

Nothing can compete with hydronic heating

Hydronic heating provides silent, even-temperature, all-round heating. Natural, slow air currents provide healthy air with natural humidity. Hydronic heating provides discreet, unobtrusive, quality heating. Not only does the furnace provide cozy, silent heating, it also provides a constant source of hot water for the shower and galley.

Alde central heating is a hydronic system that works on the same principles as those found in many of our homes. The heat source consists of a propane furnace with a 120 Volt electric element that heats a mixture of water and glycol. The hot glycol mixture is circulated through the system's convectors and pipes with the aid of a pump.

The convectors, which are located along the outer walls, heat the air. The air then rises and heats the walls and furniture. Because heat rises, a boundary air seal forms in front of the windows, which keeps the cold out. When the warm air reaches the ceiling it circulates down to the floor and is heated again by the convectors.

Every vehicle needs ventilation, i.e. stale air must be expelled and fresh air drawn in. The fresh air supplied to the vehicle should be led through an insulated air intake and then up through a convector with tightly packed fins. In this way the incoming fresh air is heated when the heating system is running. The stale air is led out through roof grilles and ventilators.

If the installation is done properly, the natural flow of heat from the Alde central heating system will wrap the entire living space in cozy warmth that keeps out drafts, eliminates cold zones and even warms bunk spaces and cupboards.

We also recommend floor heating to achieve a complete heating system with maximum comfort. The heating pipes under the floor are connected together using standard fittings and are controlled either manually or via a by-pass assembly for convenience.


The warm convectors along the outer walls and pipe coils in the floor heat the air which in turn heats the furniture and walls.
Since hot air rises, an air barrier is formed in front of the windows, which keeps the chill off. When the air reaches the roof, it circulates towards the floor and is heated up again by the convectors. 

Improved comfort


Even temperature, silent heating that circulates through convection technology based on a simple law of physics whereby hot air rises of its own accord.


No irritating airflows that dry out the air.


No unpleasant temperature changes that suddenly fluctuate between hot and cold.


Heating and domestic hot water in a single, efficient, space-saving system.

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