Chimney Sweeping
Chimney Sweeping in London, Hertfordshire & Essex
SweepSmart is a Guild of Master Sweeps member and Which? Trusted Trader providing chimney sweeping across London, Hertfordshire and Essex. We sweep around 4,000 chimneys a year. That kind of volume comes from doing a good job and people calling you back. Chimney sweeping has built-in loyalty: if you use your fireplace, you need it swept roughly every year, and most of our customers have been booking with us annually since we started.
What makes the difference isn't just the sweep itself. It's everything around it. Booking confirmations, reminders, a two-hour arrival window, live tracking so you're not waiting around, dust sheets down before we start, a proper inspection of the chimney while we're there, and a digital certificate with photos sent straight to your inbox. We brought the service standards of a good restaurant to the chimney sweeping industry, and it shows in over 1,000 five-star reviews
Why Does Your Chimney Need Sweeping?
Your chimney's job is to get dangerous combustion gases out of your home. A clean chimney does that quickly and freely. A dirty one doesn't, and the consequences range from poor performance and wasted fuel to chimney fires and carbon monoxide leaks.
Regular sweeping removes soot, tar, and creosote buildup from inside the flue. It improves the efficiency of your appliance, reduces the risk of chimney fires, and keeps the flue clear so gases vent safely. Most manufacturers and insurance companies recommend an annual sweep as a minimum, and if you're burning wood regularly, you may need it more often.
How Often Should You Have Your Chimney Swept?
Most chimneys should be swept at least once a year. The exact frequency depends on how much you use the fireplace and what you're burning.
Wood burners and multi-fuel stoves in regular use should be swept at least once a year, ideally before the start of the burning season. Heavy use may require a second sweep mid-season. Open fires should be swept at least once a year. Gas fires should be swept once a year, as gas chimneys still need checking for blockages from nesting or debris. Smokeless fuel and anthracite appliances should be swept at least once a year. Oil-fired appliances should be swept once a year.
If you're not sure how often your chimney needs sweeping, get in touch and we'll advise based on your setup.
What's Included in a SweepSmart Chimney Sweep?
Every sweep follows the same thorough process, carried out in accordance with the Guild of Master Chimney Sweeps' code of practice:
- Full visual inspection of the pot
- Stack, hearth, ventilation, fireplace or stove fitting, and lintel
- Fireplace area covered with protective dust sheets
- Chimney swept to Guild of Master Chimney Sweeps code of practice and industry standard
- Debris examined
- Advice on fireplace use and fuels
- Smoke and CO alarm check, confirming they're present and correctly positioned
- Findings reported and discussed with you
- A Guild of Master Chimney Sweeps sweeping and servicing certificate issued
- A draught test carried out using a smoke pellet
How Booking a Chimney Sweep with SweepSmart Works
This is where we're told we're different from most chimney sweeps.
When you book, you'll receive an immediate booking confirmation.
Two days before your appointment, you'll get a reminder with your two-hour arrival window.
When we're on the way, you'll receive a text message with a live tracking link so you can see exactly when we'll arrive. If you'd prefer a phone call instead, just let us know.
Payment is taken after the job is complete. We accept all major card payments.
Your time matters. We know you're not sitting around all day waiting for a tradesperson. That's why we give you a window, keep you updated, and show up when we say we will.
FAQs
What Does a Chimney Sweep Cost?
We believe in showing you the price upfront. No forms to fill in first, no waiting for a callback. Use our pricing calculator to get a ballpark figure based on your service type and area. Prices vary by location because of travel time and access, not because of where you live, but because of the logistics of getting there.
How long does a chimney sweep take?
Approximately 45 minutes per flue. That can vary depending on the property, the type of chimney, and how much buildup there is, but 45 minutes is typical.
Do You Need a Sweep or an Inspection?
A sweep is a cleaning and maintenance service. It's for chimneys you're already using regularly with no issues.
If you've never used the fireplace, haven't used it in years, are experiencing problems, or just aren't sure whether the chimney is safe, you probably need an inspection rather than a sweep. An inspection includes a CCTV camera survey, smoke testing, and a detailed diagnostic report.
Not sure which one you need? Get in touch and we'll help you work it out. Or take a look at our Inspections page to see the different levels available.
How often should I have my chimney swept?
At least once a year if you're using the fireplace regularly. If you burn wood heavily through winter, you may need a second sweep mid-season. Gas fires should also be swept annually — they still produce combustion gases and the flue can become blocked by nesting or debris. Most manufacturers and insurance companies require an annual sweep as a minimum.
Do I need to be home for the sweep?
Yes. We need access to the fireplace and we'll want to talk you through our findings at the end. We also need a plug socket near the hearth for our vacuum equipment.
What should I do to prepare before you arrive?
Make sure the fire hasn't been lit for at least 24 hours and all embers are fully out. Clear ornaments and objects from the hearth area, leave a roughly 2m x 2m space in front of the fireplace, and make sure there's a clear path from your front door to the fireplace. If your only plug sockets are behind furniture, an extension lead would help. And please shut any pets in a separate room.
Do you need to get on the roof?
No. In the UK, we sweep from the bottom up. Getting on the roof would be a separate operation entirely. We work from inside your home, through the fireplace opening. In Scandinavia and parts of Europe they sweep from the top down because their chimneys are designed for it — UK chimneys aren't.
Is anything going to get damaged?
No. The fireplace or stove is completely sealed before we start. We use protective sheets and specialist equipment, and we take care around the fireplace surround. We do this thousands of times a year, we know how to work in your home without causing damage.
Do the upstairs and downstairs fireplaces connect?
No. They're almost always separate flues. Sweeping the ground floor chimney won't push soot into the bedroom fireplace above, and you can't do "two for the price of one." Each flue is an independent system.
What happens if you find a problem during the sweep?
We'll tell you about it on the day and include it in your report. Depending on what it is, we might recommend a CCTV inspection to investigate further, or we'll advise on remedial work. We'll always explain what we've found, what it means, and what your options are.
Why do your prices vary by area?
It's not postcode snobbery — it's logistics. A cottage in Hertfordshire where we park right outside the front door is a very different job from a townhouse in Knightsbridge where we park three streets away and deal with central London traffic. The sweep itself might be identical, but everything around it takes different amounts of time.
Do you sweep gas fire chimneys?
Yes. Gas fires still produce combustion gases and the chimney can become blocked by bird nests, debris, or structural deterioration. An annual sweep checks the flue is clear and safe to use.
Will I get a certificate after the sweep?
Yes — a digital Guild of Master Chimney Sweeps certificate, sent to your email along with photos and findings. This is the document your insurance company will ask for. It's digital, so you won't lose it.
Can I watch the brush come out of the chimney pot?
We actually recommend it. Watching the brush emerge from the top proves the full length of the flue has been swept. It's also traditionally considered good luck — and we're not ones to argue with that.
Get your sweep price in under one minute
Get a price · Step 1 of 2
What's your postcode?
We cover most of London, Hertfordshire and Essex. The first part of your postcode is enough.
