As the evening draw in we often get asked whether air suspension works in winter, so we thought we might look at this question for you.
Air suspension is popular in the Baltic States and in Russia, where winters can be brutal, and the temperature can be anywhere between -10° C and -30° C. Some of the Motorhomes and 4x4's we supply air suspension for are used to get to ski resorts - so how do they do it? People imagine that the rubber will get too solid to work and the air will freeze? Surely this must cause serious problems with air suspension? It should be remembered that Range Rovers and Bentleys often come with air suspension from the factory as do most buses and lorries - do they have some sort of special parts?
Most of the common branded bags on the market are rated for use in temperatures between -30° C and around 70° C. Bags do behave noticeably differently as the temperatures increase or decrease and life expectancy might well be reduced (we simply don't have enough data to determine). Any problems are likely to come from water in the system which is a natural by product of compressing and pressurising air.
Therefore looking after your air suspension in winter is very straightforward: simply drain your air tank once a month to reduce the amount of water in the system. You might want to consider adding an extra water trap to further reduce the chances of problems or a cooling coil or dryer. Air contains a lot of evaporated water which condenses out of the air when it is compressed. It is this moisture that freezes. Additionally, you can run airbrake anti-freeze through the air pipes to further winter-proof your air suspension.
So in short, yes, air suspension can be used all year round subject to installing a good system using quality branded parts.