Chimney Damper Repair in Melbourne — Seal & Save Heat.

The Valve That Controls Your Chimney

The damper is the metal plate in the throat above the firebox that opens to let smoke out when you’re burning, and closes to seal the chimney when you’re not. Over years it rusts, warps or seizes — so it won’t fully open (smoke risk) or won’t fully close (heat loss and draughts). FreshDuct frees, repairs or replaces it.

A working damper matters more than people think. Left open between uses, it’s an open hole to the outside, letting warm air out in winter and hot air in over summer. A modern top-sealing damper can seal far better than an old throat damper if yours is past saving — we’ll advise. See our guide to damper types and repair.

A seized damper also often comes with creosote and rust from water getting in — so it’s worth checking the cap and giving the flue a sweep at the same time.

What Damper Repair Covers

Getting the damper sealing and operating:

If the damper has seized because water’s been getting in, we’ll sort the cause too — usually a cap or crown fix.

An Open Damper Is an Open Window

When a damper won’t close, your chimney becomes a permanent vent — warm air escapes up it all winter and hot summer air pours down, so your heating and cooling work harder for no benefit. A sealing damper quietly saves energy year-round.

When a damper won’t open, it’s a safety issue: lighting a fire with a closed or jammed damper sends smoke straight into the room. Either way, a damper that doesn’t do its one job properly is worth fixing — it’s usually a small, satisfying repair.

Throat Dampers, Top-Sealing Dampers and When to Upgrade

There are two main kinds. A throat damper is the traditional metal plate just above the firebox — the one most older Melbourne fireplaces have. It’s simple, but the metal-on-metal seal is never airtight and rusts and warps over the years, which is why so many leak air even when “shut”.

A top-sealing damper sits at the very top of the flue and closes with a rubber gasket, sealing far more tightly. It’s operated by a cable from the firebox, and as a bonus it caps the flue when closed — keeping rain and birds out like a cap does.

Which is right depends on your chimney and what’s wrong. If your throat damper is simply seized but sound, freeing and cleaning it is the quick, economical fix. If it’s warped, rusted through or missing, replacing it — or upgrading to a top-sealing damper for better efficiency — usually makes more sense than nursing a failing plate.

We’ll show you the condition with photos and explain the options plainly, so you can choose between a straightforward repair and a longer-term upgrade. Our damper guide covers the detail.