A simple rule of thumb
For an average household — a couple, no pets, shoes off at the door — once every 12 to 18 months is plenty. The moment you add pets, toddlers, a home business or a hallway that everyone walks straight through, that drops to every 6 to 12 months.
The reason isn't appearance, it's abrasion. Grit acts like sandpaper between carpet fibres every time someone walks on it. Cleaning removes the grit, which is why regularly-cleaned carpets keep their pile far longer than neglected ones.
- No pets, no children: every 12–18 months
- With children: every 9–12 months
- With pets: every 6–12 months
- Allergy or asthma sufferers in the house: every 6 months
- Rented properties: at every change of tenancy
- Offices and salons: every 3–6 months on entrances and corridors
Signs it's overdue
Carpets rarely look filthy overnight — they fade gradually, so it's easy to stop noticing.
- Traffic lanes are visibly darker than the edges of the room
- The pile feels crunchy or gritty underfoot
- There's a faint smell when the heating comes on
- Vacuuming makes no visible difference anymore
- Light-coloured socks pick up grey after a walk around
Why waiting costs more
Soiling that has been ground in for years sometimes will not come all the way out — not because the cleaning failed, but because the fibre itself has been scratched and dulled. That damage is permanent. Cleaning on a sensible cycle is much cheaper than replacing carpet early.
Frequently asked
- Does professional cleaning wear carpets out faster?
- No — the opposite. Removing abrasive grit is what extends carpet life. What damages carpet is over-wetting and detergent left in the pile, which is why proper extraction and rinsing matters.
- Can I just hire a machine instead?
- Hire machines have far less heat, pressure and suction, so they tend to leave carpets wetter for longer and leave detergent behind, which attracts dirt afterwards. They're fine for a small spill, less so for a whole house.