Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
See the difference
Before
After
Before
After
Before
AfterHow Much Does Chimney Cleaning & Sweep Cost in Thornton?
Chimney cleaning in Thornton typically costs $180 to $350 for a standard sweep of a wood-burning fireplace or stove flue, and most homes land near the middle of that range. A gas insert or a quick single-flue inspection cleaning can run lower, around $130 to $200. Add a Level 2 camera inspection and you’re looking at roughly $275 to $450 for the visit.
Those are honest ranges for the north Denver metro market in 2026, not teaser numbers. The written estimate you get after we see your flue is what sets your final price. If you want an exact figure before we come out, call (866) 361-5660. We answer 24/7.
Key Takeaways
- A standard chimney sweep in Thornton runs about $180 to $350, depending on the flue and how much creosote has built up.
- Chimney repairs found mid-sweep – a cracked crown, a damaged liner – are handled in-house, so you’re not calling a second contractor.
- Dryer vent cleaning is a separate, dedicated service and usually runs about $120 to $220.
- Our technicians have up to 10 years of experience, and we use DuraFlex liners and HeatShield resurfacing for repair work that lasts.
- Estimates are free, and pricing is set per job by the written estimate – no surprises added after the fact.
Chimney Cleaning & Sweep Cost Breakdown (2026)
Most homeowners want to see the numbers laid out before they book. Here’s how a chimney visit in Thornton usually breaks down in 2026. Every range below is typical and estimated, and your written estimate is the number that counts.
| Service | Typical Cost Range | What It Covers |
|---|---|---|
| Standard chimney sweep (wood-burning) | $180 – $350 | Brushing and vacuuming the flue, firebox, smoke chamber and damper; creosote removal; visual check |
| Gas insert or prefab sweep | $130 – $200 | Cleaning the venting and firebox on a gas or factory-built unit; lighter buildup than wood |
| Level 2 video inspection | $150 – $325 (add-on) | Camera scan of the full flue interior, usually recommended after a change of use or a suspected issue |
| Stubborn creosote removal (stage 2-3) | $95 – $250 added | Harder, glazed deposits that take more time and chemical treatment to clear |
| Chimney cap or crown repair | $150 – $600 | Replacing a cracked crown or missing cap that lets water and animals into the flue |
| Chimney relining (DuraFlex) | $1,800 – $4,500 | New stainless liner for a compromised or unsafe flue; sized and specified for your setup |
| HeatShield flue resurfacing | $1,200 – $3,000 | Repair-grade resurfacing of a deteriorating clay flue interior |
| Dryer vent cleaning | $120 – $220 | Full vent run cleared of lint and debris; checks for crushed or disconnected ducting |
What pushes a sweep toward the top of that first range? Creosote. A lightly used fireplace gets a quick, clean sweep. A flue that’s gone two or three seasons without attention builds up glazed, tar-like deposits that take longer to remove and often call for a chemical treatment. The other big driver is the structure itself – a straight, accessible flue is fast work, while a tall chimney with a steep roofline or a tight smoke chamber takes more time and care. Repairs found during a sweep get quoted and can usually be handled the same visit, which is why the repair-ready scope matters. A deteriorating flue or cracked crown doesn’t need a separate masonry contractor and a second appointment.
What Affects Chimney Cleaning & Sweep Pricing in Thornton
Two sweep jobs on the same street can price differently, and there’s a reason. Here’s what actually moves the number in and around Thornton.
- How much and what kind of creosote is in there. Soft, sooty buildup is quick to clear. Glazed, hardened creosote takes more time and often a treatment step, adding to the total. How often your fireplace runs and how dry your wood is both shape this.
- The type of appliance. A wood-burning fireplace produces far more creosote than a gas insert, so wood jobs sit higher. Factory-built and gas units typically clean out faster and cost less.
- Flue accessibility and roof pitch. Thornton homes range from single-story ranchers to two-story builds, and that roof pitch changes how safely and how long a chimney takes to reach. Steep or hard-to-reach flues add time.
- Blockages and animal nests. Open caps let birds and squirrels in, and clearing a blocked flue is more involved than a routine sweep. A missing or damaged cap is a common find, and replacing it protects the flue after we clean it.
- Whether repairs turn up. A cracked crown, a spalling flue tile or a failing liner found mid-sweep changes the visit from cleaning to cleaning plus repair. Because we handle chimney repair in-house, you get one estimate for the whole job instead of coordinating two trades.
- Time since the last cleaning. A flue swept regularly every year is easier to clean than one that’s gone several seasons without attention. Routine upkeep keeps future visits in the lower part of the range.
How to Save on Chimney Cleaning & Sweep
Chimney work isn’t where you want to cut corners on materials, but there are smart ways to keep the total down.
- Book a sweep before problems build. A yearly cleaning catches creosote early, while it’s still easy to remove. Wait too long and you’re paying for extra time and treatment. It’s the cheapest visit you’ll ever make.
- Burn dry, seasoned wood. Wet or green wood drives up creosote fast, which means more cleaning cost down the line. The fuel you choose affects how hard your flue works.
- Bundle the visit with a dryer vent cleaning. If you’re already having us out, adding the dryer vent is a natural pairing. Dryer vents are one of the most overlooked fire-safety items in a home, and most chimney-only sweeps skip them entirely. Getting both done together saves you a separate appointment.
- Ask about repair-grade fixes, not patches. A cheap liner or a temporary flue patch often leads to a second, bigger bill later. Specifying the right material the first time – DuraFlex for relining, HeatShield for resurfacing – costs more upfront but avoids repeat work.
- Take the free estimate seriously. Get the written scope before anyone starts, so you know exactly what’s covered. Call (866) 361-5660 for a free estimate and a clear breakdown.
- Keep a cap on your chimney. A proper cap keeps water, birds and debris out of the flue, which prevents blockages and water damage that turn a simple sweep into a repair job.
Why the Materials Behind the Repair Matter to Your Price
When a sweep turns up a damaged liner or a deteriorating flue, the repair is where chimney costs really swing. That’s also where material choice matters most. We work with a curated lineup of industry brands – DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco and Copperfield – the same professional-grade materials chimney specialists specify nationwide. That means repair work on your flue is chosen for how it performs, not for what’s cheapest at a supply house. A DuraFlex liner is sized for your flue and installed to hold up over years of heating cycles. HeatShield resurfacing rebuilds a compromised clay flue interior as a repair-grade solution rather than a stopgap patch.
The reason it saves money in the long run is simple: the right material the first time means you’re not paying twice. And because cleaning and repair live under one roof, a problem found during your sweep gets addressed before we leave. No separate masonry contractor, no second visit, no gap where a small issue becomes an expensive one. Our technicians have up to 10 years of experience, and the whole visit stays in one trade. Every job is a single-trade focus on chimneys and venting, so no one’s a general handyman squeezing in a sweep between pressure-washing jobs.
Do You Need a Sweep or Just an Inspection?
Not every visit is a full cleaning, and it’s worth knowing the difference before you book. An inspection tells you the condition of the flue, the smoke chamber, the damper and the cap. A sweep actually cleans it. Most homes with a working wood-burning fireplace should be swept about once a year – roughly one cleaning for every cord of wood burned. A gas insert that’s used lightly can sometimes go longer between cleanings. If it’s been a while, or if you’ve just moved into a home in Thornton, an inspection paired with a sweep is the practical place to start. We’ll tell you honestly whether you need the cleaning now or can wait.
FAQs – Chimney Cleaning & Sweep Cost
How much does a chimney sweep cost in Thornton?
A standard chimney sweep in Thornton typically runs $180 to $350, with most homes landing in the middle of that range. A gas insert or prefab cleaning runs about $130 to $200, and a recommended Level 2 video inspection adds roughly $150 to $325. Call (866) 361-5660 for an exact quote – estimates are free.
Is it cheaper to repair or replace my chimney liner?
Repair is usually the cheaper path when the flue is only partly compromised. HeatShield resurfacing of a deteriorating clay flue runs about $1,200 to $3,000, while a full DuraFlex relining of a failed flue runs roughly $1,800 to $4,500. A full rebuild costs far more, so the smart move is to have the flue inspected before deciding. Call (866) 361-5660 and we’ll give you a clear recommendation and a free estimate.
How much does creosote removal cost in Thornton?
Removing stubborn stage 2 or 3 creosote typically adds about $95 to $250 to a standard sweep. Light sooty buildup is included in the normal $180 to $350 cleaning. Glazed creosote is a fire hazard, so it’s worth clearing sooner rather than later. Call (866) 361-5660 to find out which range your flue falls into.
How much does dryer vent cleaning cost in Thornton?
Dryer vent cleaning typically costs $120 to $220, and it’s often the most overlooked fire-safety service in a home. Most chimney-only sweeps don’t offer it, so pairing it with your chimney visit is an efficient way to get both handled. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Can you come out the same day?
Often, yes – same-day service is available when the schedule allows. Call (866) 361-5660 and we’ll find the soonest opening. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday, and we’re closed on Saturdays.
Book Your Chimney Sweep in Thornton
Getting your chimney cleaned is one of the simplest fire-safety steps you can take, and one specialist can handle the sweep, any repair that turns up, and your dryer vent in the same trade. Our technicians have up to 10 years of experience, we use professional-grade materials from DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco and Copperfield, and every estimate is free and set per job in writing. For a full look at what we do, see chimney sweep Thornton, and for local context, visit our Thornton page.
Call (866) 361-5660 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Pricing reflects the Thornton market as of 2026. Chimney Sweep Thornton offers free estimates – call (866) 361-5660.
What Our Customers Say
"Creosote buildup was worse than I realized. He measured it, showed me the glazing on the flue with the camera, and was honest that we were closer to a chimney fire than I wanted to hear."
- Doug Delaney"Good work. The written inspection report took about a week to arrive after I asked for it, which was slower than I expected."
- Carlos Herrera"Fireplace had never drawn properly since we moved in. He found the damper was only opening halfway due to a bent linkage and fixed it in ten minutes."
- Todd Meyer