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The best time to clean your chimney is before you need to use it, which for most people is during the spring, summer, or early fall. Spring and summer are often ideal because the chimney is not in use, and chimney sweeps can access the roof more easily without snow and ice. The warmer months are also better for making any necessary repairs. To avoid the rush when chimney sweeps get booked up in early spring and late fall, scheduling your cleaning for the summer can be a safe bet. It's recommended to book your annual chimney sweep during these warmer months to maintain a yearly schedule.

If you haven’t had your chimney cleaned in some time, soot and grime can build up, making it difficult for the lever to release to close the flue. When this happens, locate the lever and clean it thoroughly. If this doesn’t help, consult with a fireplace repair pro to examine it for you.

A well-constructed and regularly maintained brick chimney can last 50 to 100 years, potentially spanning multiple generations of homeowners. The exact lifespan depends on the quality of construction, materials, local environment, and maintenance. In contrast, a metal chimney typically lasts 15 to 20 years. While the main structure is durable, individual components have shorter lifespans and require more frequent replacement. For example, mortar may need repointing every 20 to 30 years, chimney crowns last 50 to 75 years, and liners can last anywhere from 15 to 50 years depending on the material (e.g., stainless steel vs. cast-in-place).

A liter of bioethanol costs $11 and burns for around four hours, making it cost around $2.75 per hour to keep your bioethanol fireplace running. For comparison, natural gas costs around $0.50 per hour, and propane costs around $1.60 per hour. 

How much it costs you to run your bioethanol fireplace largely depends on how often you use it. Hypothetically speaking, if you run your fireplace for four hours a week year-round, you’ll go through one liter of biofuel per week or about $570 per year to run the fireplace.