Winter: dry air and loose joints

Heating systems can pull indoor humidity below 30%, and hardwood frames respond by shrinking slightly. The result is joints that loosen over a few winters, which presents first as a rattle.

A small humidifier in the room, or simply not placing the machine near a radiator or heating vent, prevents most of it. Check the frame bolts at the end of winter as a matter of routine.

Summer: sun and moisture

Direct sunlight through a window is the single fastest way to destroy upholstery — UV breaks down vinyl in a matter of months of daily exposure. It also fades and can dry hardwood finishes unevenly.

Humidity above 70% corrodes springs and hardware and lets upholstery foam hold moisture. In a damp summer, a dehumidifier in the room is a cheap insurance policy.

  • Winter: keep humidity above 40%, away from radiators and vents
  • End of winter: check every frame bolt
  • Summer: keep out of direct sunlight, watch for humidity above 70%
  • Any season: wipe sweat from the frame and springs after sessions
  • A £10 hygrometer tells you whether any of this applies to your room

Rooms that need extra attention

Conservatories, garages, loft conversions and basements all swing further than the rest of a house. Conservatories combine the worst of both — extreme sun and large temperature swings — and are the least suitable room for a hardwood machine.

If one of these is the only option, an aluminum-framed machine removes most of the risk.

A twice-yearly routine

At the start of spring and again in autumn: check every bolt, inspect springs for corrosion, look over the upholstery for UV damage, and clean the rails thoroughly.

Twenty minutes, twice a year, catches everything seasonal before it becomes structural.