If you hear ticking, popping, or light knocking sounds from your pipes when the temperature drops, it is often caused by the pipes themselves reacting to the cold.
In many cases, this is normal and not a sign that something is wrong.
Quick Answer
As temperatures fall, metal pipes can contract slightly. That movement can create ticking or popping sounds, especially where pipes pass through framing or are held in place with straps and fittings.
The noise is often most noticeable during the first cold snap of the season.
Why Cold Weather Makes Pipes Noisy
Pipes Contract as Temperatures Drop
Metal naturally expands and contracts with temperature changes.
When cold weather arrives, pipes may shrink slightly. As they move against surrounding materials, you may hear small ticking or popping sounds.
Loose Straps Can Make the Noise Louder
Pipe straps and fittings are meant to help keep plumbing secure.
If they are slightly loose, normal pipe movement can sound louder or happen more often.
The Noise May Settle Down
Cold weather pipe noises are often more noticeable early in the season when temperatures first drop.
Once the plumbing adjusts to the colder conditions, the sounds may become less frequent.
When Should You Call a Plumber?
In most cases, mild ticking or popping is nothing to worry about.
It is worth having a plumber take a look if:
- The noise is new or getting worse
- You hear loud banging
- You notice a leak
- There are signs of water damage
- Your plumbing is not working normally
Getting a new or unusual plumbing noise checked before winter can help rule out a more serious issue.
A little extra noise from your pipes during cold weather can be completely normal. But if something sounds different than usual or is accompanied by a leak, having it inspected by a professional plumbing company can give you peace of mind before temperatures drop further.