The Right Flue Dimensions for Optimal Venting

Having the Right Flue Dimensions for Optimal Venting is very important.  Have you ever forgotten to open the fireplace flue or had an unexpected downdraft? It’s smoky, dangerous, and frankly not very good for your health. Yet there are many fireplaces out there that aren’t venting optimally, creating a milder form of this situation every time a fire is burned in them. Is this your fireplace?

Many factors affect the venting efficiency of your chimney flue, but having the optimal dimensions is an important one. A too narrow flue will not draw enough smoke and gas, on the other hand, a flue that is too wide will allow too much heat to escape. A tall flue is generally better for drawing up air due to the pressure difference in the atmosphere; yet, a flue that is too long can lead to problems related to creosote build-up, so having the right flue dimensions is critical for the best optimal results.

Building codes specify flue dimensions for all types of chimney flues, but safety inspections usually only occur directly after a home is built or when it is being sold. If you are rebuilding your chimney or replacing the flue insert, trust only the professionals that build chimneys everyday. They will ensure that your chimney complies with all the relevant safety codes and has the optimal flue dimensions for venting. Doing it right the first time can save you time, money and potentially your health.

Jesse Peralta

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