Chimney & fireplace
Chimney Maintenance Cost Calculator
Prices annual maintenance, which is inspection first and sweeping as needed.
Result
A planning estimate, not a quote. Access, the age of the equipment, what is found once it is opened up and local labour rates all move the real figure, sometimes a long way.
Get a Free Business AuditHow the calculation works
Hours times crew times rate, plus materials and the call-out. Annual maintenance is an inspection of the appliance and chimney, sweeping where the deposit warrants it, checking the cap, crown and flashing from the roof, confirming the damper operates and the flue is clear, and reporting anything that needs attention. The order matters: inspect, then sweep if needed, rather than sweeping on a schedule and inspecting incidentally.
What moves the number
- Number of flues and appliances in the property.
- Whether roof access is included, which it should be for the top components.
- Whether sweeping is needed this year or only inspection.
- Appliance type, since gas appliances need different annual attention.
Where this one goes wrong
The most valuable part of an annual visit is finding the things that are cheap now and expensive later: a cracked crown, a missing or corroded cap, early flashing failure, and open mortar joints. All four let water in, and water causes most chimney deterioration, so catching them is worth more than the sweep. Gas appliances need annual attention too and are often neglected because they look clean: the pilot assembly, the venting, the glass gasket and the flame pattern all need checking, and a blocked or disconnected vent on a gas appliance is a carbon monoxide risk. Carbon monoxide alarms are worth checking while you are there.
Before you quote
- Inspect before deciding whether sweeping is needed.
- Check cap, crown and flashing from the roof, not from the ground.
- Service gas appliances annually even though they look clean.
- Check that carbon monoxide alarms are present and working.
Where the rules come from
Questions
About this calculator
Does a chimney need maintenance if it is not used much?
The annual inspection still matters, even if sweeping does not. The cap, crown, flashing and masonry deteriorate from weather rather than from use, and animals nest in unused flues. A chimney that has not been used for a year is not a chimney that needs nothing.
Do gas fireplaces need annual servicing?
Yes, and they are frequently neglected because they look clean. The pilot assembly, venting, glass gasket and flame pattern all need checking, and a blocked or disconnected vent on a gas appliance is a carbon monoxide risk rather than a performance issue.
What does an annual visit actually find?
Most often the cheap things that become expensive: a cracked crown, a corroded or missing cap, early flashing failure and open mortar joints. All four let water into the chimney, and water causes most chimney deterioration, so finding them is usually worth more than the sweeping.
The formula
total = hours x people x rate + parts + call-out, then sales tax
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How to use this calculator
- Hours on site (h). Enter your own figure; the page starts at 2 h.
- People needed. Enter your own figure; the page starts at 1.
- Labour rate charged ($). Enter your own figure; the page starts at $125.
- Parts and materials ($). Enter your own figure; the page starts at $65.
- Call-out or diagnostic fee ($). Enter your own figure; the page starts at $95.
- Sales tax (%). Leave at zero if you are quoting before tax.
The result updates as you type, so you can try a figure, see what it does to estimated total, and change it back. Nothing you enter is sent anywhere or saved.
A worked example
These are the figures the calculator opens with. Every number in the results column below is produced by the same calculation the page runs, so you can follow it through before putting your own figures in.
What goes in
| Input | Value |
|---|---|
| Hours on site | 2 h |
| People needed | 1 |
| Labour rate charged | $125 |
| Parts and materials | $65 |
| Call-out or diagnostic fee | $95 |
| Sales tax | 0% |
What comes out
| Result | Value |
|---|---|
| Estimated total main result | $410 |
| Labour | $250 |
| Before tax | $410 |
| Sales tax | $0 |
About $410: $250 of labour, $65 of parts and a $95 call-out.
How sensitive the answer is
Holding everything else steady and changing only labour rate charged, this is what happens to estimated total. It is worth knowing which of your inputs the answer actually hinges on, and which barely move it.
| Labour rate charged ($) | Estimated total |
|---|---|
| $63 | $286 |
| $94 | $348 |
| $125 example above | $410 |
| $188 | $536 |
| $250 | $660 |
Every other input is held at the example value while this one changes, which is not how a real job behaves. Treat it as a guide to which number matters most, not as five separate quotes.
What each figure means
- Hours on site (h)
- Measured in h, between 0 and 400, starting at 2 h.
- People needed
- A number, between 0 and 40, starting at 1.
- Labour rate charged ($)
- A money amount, starting at $125.
- Parts and materials ($)
- A money amount, starting at $65.
- Call-out or diagnostic fee ($)
- A money amount, starting at $95.
- Sales tax (%)
- Leave at zero if you are quoting before tax.
What the results tell you
| Result | What it is |
|---|---|
| Estimated total | The headline result. A money figure. |
| Labour | A money figure. |
| Before tax | A money figure. |
| Sales tax | A money figure. |
Estimating is the easy part
The jobs you never hear about cost more than the ones you mis-measure. BDEVY builds the marketing, systems and automation that bring them in.