Chimney Damper Repair Toronto — Fix It, Free It, or Replace It Top-Mount
A stuck or missing damper wastes 15–30% of your heating dollars. We free frozen throat dampers, replace failed ones, or upgrade to a sealing top-mount.
What's included
- Free-up rusted throat dampers
- Full throat damper replacement
- Top-mount Lock-Top upgrade
- Chain and handle install
- Air-seal test after install
- 5-year warranty on top-mount
Why Chimney Damper Repair matters in the GTA
A working damper is the difference between a warm house and a cold draft. A leaky throat damper wastes 15–30% of your heat — a sealed top-mount cures it completely.
Toronto's negative-pressure homes (tight, modern, with big range hoods) pull air backwards through chimneys constantly. A sealed top-mount damper stops it dead.
What the visit looks like
Inspect the existing damper, free it if frozen, or replace throat with cast-iron equivalent. For top-mount: install stainless housing on the crown, run the pull-chain down the flue to a handle in the firebox.
Real Toronto pricing (2026)
Throat damper free-up: $225–$285. Throat damper replacement: $325–$425. Top-mount Lock-Top install: $425–$550.
Why Chimney Experts
Lock-Top comes with a lifetime metal warranty and we back the install for 5 years. Payback on energy savings is 2–3 years.
What Toronto homeowners say
"Booked a sweep and WETT inspection before winter. Crew arrived on time, laid down drop cloths, and walked me through the report photo by photo. Fixed pricing, no upsell — exactly what was quoted."
— Sarah M.
"Cracked clay liner in our 1962 fireplace. They installed a stainless liner and new cap in one day and the draft is perfect. Warranty paperwork emailed the same evening."
— David R.
"Called for a raccoon in the flue. They removed it humanely, sanitized the smoke chamber, and installed a stainless cap. Fair price, no drama, and they even followed up a week later."
— Priya S.
Frequently asked questions
How do I know my damper leaks?+
Feel for cold air with the damper closed — any draft is a fail.
Throat or top-mount?+
Top-mount seals better and prevents animals; throat is cheaper if working.
Will it save on heating?+
15–30% typically — pays for itself in 2–3 years.
How long does install take?+
1–2 hours for either type.
Warranty?+
5 years on top-mount install; lifetime on the metal itself.
Can I use my fireplace with a top-mount?+
Yes — pull chain opens it before you light.
Serving the entire GTA
Related services
Ready to book your chimney service?
Free written quotes. Same-week booking across the GTA.
Quote in 3 quick taps.
Service · urgency · contact. A chimney expert replies in under 15 minutes.
- Fixed-price written quote
- No spam, no sales calls
- WETT & CSIA certified