To calculate chimney height, multiply the fuel rate (FR) by 5.5 and then by the stack coefficient (SC) divided by 100. Add this result to 14 to find the chimney height (H).
Chimney Height Calculator
Enter any 2 values to calculate the missing variable
A Chimney Height Calculator helps determine the proper height for a chimney to ensure optimal draft and ventilation, whether it’s for a wood stove, boiler, or other exhaust systems. The height of a chimney is critical for ensuring the efficient removal of smoke and gases from a building.
Formula:
H = 14 + (5.5 × FR × (SC ÷ 100))
| Symbol | Meaning |
|---|---|
| H | Chimney Height |
| FR | Fuel Rate (amount of fuel used) |
| SC | Stack Coefficient (efficiency factor) |
Solved Calculation:
Example 1:
| Calculation | Instructions |
|---|---|
| Given: FR = 20, SC = 150 | Start with the known fuel rate and stack coefficient. |
| H = 14 + (5.5 × 20 × (150 ÷ 100)) | Multiply the fuel rate by 5.5, then by the stack coefficient divided by 100. |
| H = 14 + (5.5 × 20 × 1.5) | Simplify the equation by multiplying the values. |
| H = 14 + 165 | Add the result to 14. |
| H = 179 feet | The chimney height should be 179 feet. |
Answer: The calculated chimney height is 179 feet.
Example 2:
| Calculation | Instructions |
|---|---|
| Given: FR = 30, SC = 120 | Start with the known fuel rate and stack coefficient. |
| H = 14 + (5.5 × 30 × (120 ÷ 100)) | Multiply the fuel rate by 5.5, then by the stack coefficient divided by 100. |
| H = 14 + (5.5 × 30 × 1.2) | Simplify the equation by multiplying the values. |
| H = 14 + 198 | Add the result to 14. |
| H = 212 feet | The chimney height should be 212 feet. |
Answer: The calculated chimney height is 212 feet.
What is Chimney Height Calculator ?
A Chimney Height Calculator is essential for ensuring that your chimney functions correctly and safely. The height of a chimney affects how well it draws smoke and gases away from your home or building. If you want to know how to calculate the height of a chimney, this tool can help. Many factors determine the proper chimney height, including the type of appliance you are using and local building codes.
For example, the 3-2-10 rule suggests that the chimney should be at least 3 feet higher than the roof and 2 feet above anything within 10 feet of it. You can also find specific calculators for different types of chimneys, like a boiler chimney height calculator or a wood stove chimney height calculator.
These tools make it easier to input your measurements and find the ideal height. Additionally, if you’re in Pakistan or India, you can access calculators that cater to local regulations and requirements. Understanding the right chimney height is crucial for safety and efficiency in any heating system.
