Every chimney sweep, firebox to cap. Not a spot left.
A real chimney sweep is not a poke with a brush. It's the flue, the smoke chamber, the smoke shelf, the damper, and a draft test — with a HEPA vacuum running the whole time and a Level 1 inspection included. Usually done in 45 to 90 minutes.
A real person answers, any hour — 24/7, holidays included.
Six things happen on every chimney sweep.
Same order, same standard, whether it's a Tuesday in October or a holiday morning. Nothing on this list is an add-on.
Soot is dirt. Creosote is fuel.
People use the words interchangeably. Your chimney doesn't. One makes a mess. The other is the reason chimney fires exist.
Fine black powder — mostly carbon left over from combustion. It brushes off. It stains your hands and your carpet, and enough of it will choke a flue, but on its own it isn't dramatic.
Condensed wood smoke — the tars and vapors that cooled before they got out. It starts flaky, turns crusty, then hardens into a black glaze that sticks to the liner like enamel. And it burns.
Smoldering fires, unseasoned wood, a damper choked down overnight, an oversized or cold exterior flue. Anything that lets smoke linger and cool on the way up leaves more of itself behind.
NFPA 211 — the national standard we work to — says a chimney gets inspected at least once a year, and swept once soot reaches 1/8 inch, or any time glaze is present. An eighth of an inch is about the thickness of two stacked dimes. It sounds like nothing. It is the line between a dirty chimney and a chimney with a fuel load in it.
Glazed, tar-like buildup doesn't come off with a brush. That's a different job — see creosote removal. And if you're trying to work out your own schedule, we wrote the honest answer here: how often you should have your chimney swept.
"Is this going to put soot all over my living room?"
It's the first thing people ask, and they ask it apologetically — as if it's a silly question. It isn't. Everyone has heard the story about the cream-colored rug.
Here is the answer. Drop cloths go down before anything else happens. Shoe covers go on at the door and stay on. A HEPA-filtered vacuum runs from the moment the firebox is opened until the last rod comes out — not at the end, not "as needed," the entire time. The soot goes into the vacuum. That's where it stays.
We leave the hearth cleaner than we found it. That's not a slogan we hide behind a footnote — it's the whole reason the company is called On Spot.
Three offices. One phone call.
Tap your city. A real person picks up — 24 hours a day, 365 days a year, holidays included. No phone tree, no callback queue, no "our next available representative."
Outside the city limits? Check the office locator — or just contact us and we'll route you.
A sweep cleans. It doesn't rebuild.
Some companies blur this line, then hand you a surprise. We'd rather say it up front: a chimney sweep removes buildup and tells you what's there. It does not fix what's broken. If the Level 1 turns something up, we photograph it, explain it, and quote it as separate work — and nothing happens without your say-so.
If it vents, it needs a sweep.
"But mine's gas" is the most common reason a chimney goes ten years without anyone looking at it. Every appliance below runs through a flue, and every flue has a service life.
Wood stoves & inserts
The hardest-working flues we see. A stove burns long and slow, which is exactly the condition creosote loves, and an insert hides its liner behind a face plate. We sweep the liner its full length, clear the baffle area, and check the connection where the appliance meets the chimney.
Gas appliances
Gas burns clean — but its exhaust is wet and acidic, and that moisture is hard on liners and mortar joints over the years. Flues still collect debris, and a blocked one has nowhere to send its combustion gases but back inside. Once a year, eyes on it.
Pellet stoves
Fine fly ash, and lots of it. It packs into the vent run, the elbows, and the exhaust blower until the stove starts short-cycling or throwing error codes. Cleaning the vent is what keeps a pellet stove behaving like a pellet stove.
Two appliances on the same chimney, or a flue you're not sure is still connected to anything? Say so when you call — it changes what we bring. And while the rods and the vacuum are already in the house, most people add dryer vent cleaning to the same visit: one trip, both ducts, one report. See everything we do on the services page.
Your job is almost nothing.
Three things, and none of them take more than a minute:
- Let the fire go cold. A full 24 hours if you can manage it. We can't sweep a warm flue, and neither can anyone else.
- Clear the hearth and mantel. Photo frames, candles, the good vase. Anything breakable within arm's reach of the firebox.
- Leave us a path. Front door to fireplace. If the cat has opinions about strangers, a closed door helps.
That's the list. You don't need to move furniture, buy anything, or clean up first — cleaning up is literally what we're there for.
You get the photos, not a verdict.
Every visit ends the same way: before-and-after photos of your flue, your smoke chamber, and your damper, plus a plain-English report on what we found and what — if anything — it means. It's in your inbox before the truck pulls out of the driveway.
You should never have to take a contractor's word for what's happening thirty feet above your head. Now you don't have to. And if you're selling, that report is a useful thing to have on file.
DALLAS — CALL (682) 899-2867 →Chimney sweeping questions, answered.
Or skip the reading and ask a sweep — two minutes on the phone usually settles it. (872) 713-7974 in Chicago, or see all offices.