Water Heater Knocking Noise: A Manchester Fix

2026-02-06

Plumbing Guide

Knocking or rumbling from the water heater is sediment boiling at the bottom. Here is the Manchester guide.

Water Heater Knocking Noise: A Manchester Fix

The sediment

Minerals settle at the tank bottom and trap water, which pops and knocks as it heats.

The fix

Flushing the tank clears the sediment and quiets the noise.

The prevention

An annual flush keeps it from building up. freezing winters put stress on exposed lines, and many older homes still have aging galvanized pipes In Manchester, hard water makes it more frequent.

The call

Quiet the heater. Call 888-217-3585 and Manchester Home Plumbing Co will match you with a Manchester pro.

Plumbing in Manchester: what to know

In Manchester, freezing winters put stress on exposed lines, and many older homes still have aging galvanized pipes. Pros in our network know the local quirks and bring the right parts on the first visit.

Across Hillsborough County — from Nashua, Concord and Methuen to ZIP codes like 03101, 03104, 03103 — homeowners deal with the same kinds of issues. The tips above apply locally, and when a job goes beyond a quick fix, a vetted local pro is only a call away.

Need a hand in Manchester?

If a plumbing issue is beyond a quick fix, don't wait for it to get worse. Call 888-217-3585 and Manchester Home Plumbing Co will match you with a vetted local pro — usually within minutes. Learn more about plumbing help in Manchester.

Plumbing emergency or urgent repair? Call now.

Call 888-217-3585 and we'll match you with a vetted plumbing pro in Manchester — usually within minutes.

Emergency? Call Now888-217-3585
Emergency? Call Now888-217-3585