13 November 2020 Motorhome
For those who like to road trip all year round, what could be more unpleasant than being awoken by the cold? During the winter and also certain spring nights it is necessary to heat the inside of the motorhome, or campervan so it doesn’t turn into an ice cube. So how does it work, what are the different motorhome heaters and how can you increase the temperature intelligently?
Before getting to the heart of the matter, know that there are only two types of motorhome heaters: forced air heater and central heater. But then why are we talking about diesel heaters and gas? Answer below ⤵
It is the most popular heating system in motorhomes, you may be familiar with brands such as Truma or Webasto. Here the air is heated in contact with a burner, then it is diffused by a fan in a network of pipes opening out in several places, in particular through the air distribution vents. It’s a system that is easy to install and does not require special installation since it connects to your ventilation system.
The forced air heater can operate on gas or fuel.
To put it simply, you take the principle of central heating in your home and apply it to your motorhome. Here water is used to transport heat from one point to another, we also mention heat transfer fluid.
This makes it possible to have a constant temperature throughout the vehicle, better comfort and warm air that is not dry, however the heating time is longer than with forced air heating.
This heating system is generally used on "luxury" motorhomes or heavy goods vehicles. It typically requires professional installation (metal pipes for example) which increases the total weight of the vehicle, which can quickly become an issue for vehicles that weigh around 3.5T.
Here too the central heating is supplied either with gas or diesel.
On a motohome diesel heater, the burner operates on fuel. Pretty easy to understand isn't it?
Heating with diesel fuel is quite rare in motorhomes, yet it has many benefits. It takes up less space, you only need to fill it up with gasoline to have heating, and it is not necessary to use adapters for gas bottles. Yes you have surely experienced it, all countries do not have the same connections, and it is sometimes a hassle to find a solution.
On the consumption side, on an old vehicle it is quite substantial, on a recent vehicle it is reasonable. To give you an idea, a week of skiing, with "normal" heating all day, will make you lose a little more than 1/4 of the tank.
It is much the same principle as a motorhome diesel heater, except that the burner is supplied with gas. With the pulsed system, the air is heated directly by the burner while with the central heating system it heats liquid instead of air.
In fact, your standard motorhome heater is more than enough to maintain a temperature of 20°C, but when we are in the mountains or when we are connected to electricity, it is sometimes easier to plug in an auxiliary heater in the motorhome to quickly increase the temperature.
Warning by Casimir Ras on Facebook: be careful with the auxiliary heater, it may interfere with the triggering of the gas heater thermostat, which could prevent the tanks from being frost-free. This can be problematic especially if you are in the mountains in winter.
Price wise, they can usually be found between £40 and £50.
In summary, they each have their own specificities, but do not cost the same price. It is therefore not surprising to find forced-air heating in more than 80% of vehicles on the market because it is less expensive and less restrictive to install. Conversely, you will find central heating on high-end models. Why? Because convectors, metal pipes and the whole system add to the bill as well as the weight.
The two systems are efficient since each vehicle being equipped goes from 0°C to 20°C in about 2 hours. So you can go enjoy the winter without freezing.
To finish, a quick point on the quality of the hot air released: with the forced air, the air will be dry and recycled, while with the central unit, the air not being blown, but retains a relative humidity.