Active chimney fire
Call 911 first
What you are seeing: A loud roaring or crackling from the chimney, flames or heavy sparks at the top, dense smoke, or intense heat coming off the chimney breast or the wall beside it.
Get everyone out of the house. Call 911. If — and only if — it takes seconds and you are not putting yourself at risk, close the fireplace doors and the damper on your way past to starve the fire of air. Do not try to fight it. Do not put water on the masonry; the thermal shock can crack it badly. Wait outside.
Afterwards, do not use that fireplace or any appliance connected to that chimney until it has had a Level 2 inspection. A chimney fire routinely cracks flue tiles even when everything looks fine from the room, and a cracked liner can let combustion gases into the structure of the house next time you light it.
Worth calling us out of hours? Yes — after the fire department clears the scene. Same day or first thing next morning for the post-fire assessment and the insurance documentation.
Carbon monoxide alarm sounding
Call 911 first
What you are seeing: Your CO alarm is going off, or people in the house have unexplained headaches, nausea, dizziness or drowsiness that improves when they leave the building.
Leave the house now. Call 911 from outside. Do not stop to open windows, do not hunt for the source, and do not go back in until emergency responders say it is safe. Carbon monoxide has no smell and impairs judgement, which is precisely why people talk themselves into staying inside a little longer.
Once the scene is cleared, the venting system needs to be inspected to find out where the CO came from. A blocked flue, a cracked liner, or a chimney that is back-drafting because it was never resized after an appliance change are all realistic causes.
Worth calling us out of hours? Yes — once responders have cleared the building. The chimney and appliance venting need inspecting before the system is used again.
Smoke coming back into the room
Urgent
What you are seeing: Smoke pushing out of the fireplace into the living space instead of going up the flue.
Open windows to ventilate. If a fire is lit, check the damper is actually open — it is the most common cause and the most embarrassing to discover later. If it is open and smoke is still coming back, put the fire out and let the room clear. If a CO alarm sounds at any point, or anyone feels unwell, stop treating this as a draft problem and treat it as the CO emergency above.
Persistent back-smoking with the damper open usually means a blockage, a flue that is the wrong size for the appliance, or a stack that is too cold to establish draft. All three need a look inside the flue.
Worth calling us out of hours? Call any time. If the house is unusable because of smoke, we treat it as urgent; otherwise a next-morning inspection is the sensible response.
Storm or lightning damage
Urgent
What you are seeing: Masonry down on the roof or in the yard after a storm, a visible hole where the chimney passes through the roof, or a lightning strike on or near the chimney.
Stop using the fireplace and any appliance vented by that chimney. Stay away from the area below the stack, outside and in.
Lightning deserves particular caution. A direct strike can fracture a liner through its entire height and crack the surrounding masonry while leaving almost nothing visible from the ground. After any strike on or near the chimney, treat it as unusable until it has been inspected properly.
Worth calling us out of hours? Yes, if masonry has fallen, the chimney is visibly leaning, or the roof is open to the weather. We will arrange emergency tarping. Be aware that nobody can safely work on a roof in nor'easter winds — the honest answer is that we make it safe and get up there the moment conditions allow.
Leaning or separating chimney
Urgent
What you are seeing: A visible gap opening between the chimney and the house, a stack that looks out of plumb, or a lean that seems to be getting worse.
Treat this as structural. Stop using the fireplace, keep people away from the ground below it, and avoid the rooms directly beneath it if the lean is pronounced. A chimney that has separated from the structure can come down outward, and they are extremely heavy.
Worth calling us out of hours? Yes, if the lean is visible from the ground or appears to be worsening. Emergency stabilisation sometimes needs shoring or staging, which we would rather organise at 7am than after it falls.
Animals in the flue
Urgent, not 911
What you are seeing: Scratching, scrabbling or chirping sounds from inside the chimney, or an animal loose in the firebox.
Keep the damper closed. If something is in the firebox, resist the urge to fling the doors open to let it out — a panicked animal will go into your living room, not out the window. Massachusetts requires licensed wildlife control operators for some species, so removal is not always a job for a chimney company.
One important exception: chimney swifts are protected under the federal Migratory Bird Treaty Act. If swifts are nesting in your flue, roughly May through August, it is illegal to remove or disturb an active nest. The correct sequence is to wait until they migrate in the fall, then have the flue cleaned and capped so it does not happen again.
Worth calling us out of hours? A raccoon with young in the firebox is genuinely urgent. A squirrel or bird is usually manageable by morning. Swifts are not an emergency at all — book the work for the fall.
Water pouring in during a storm
Urgent, not 911
What you are seeing: Water running into the firebox or down the chimney breast during a nor'easter or heavy driven rain.
Put buckets and towels down to protect the floor. Close the damper if it is open. Do not light a fire to 'dry it out'.
We will be straight with you about what happens next: the repair itself cannot be done in a storm, because nobody can safely be on a roof in high wind. What a call at that hour genuinely achieves is getting you booked for first light and arranging emergency tarping if water is actively damaging the building.
Worth calling us out of hours? Worth calling if water is damaging ceilings, walls or floors. Otherwise first thing in the morning is the realistic response.