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Yes, you can install a liner in an old chimney that is in good working condition. In fact, it's often necessary for safety and efficiency. Older chimneys may lack liners or have deteriorated ones, leading to heat damage, gas leaks, or reduced performance. Installing a stainless steel, clay tile, or cast-in-place liner improves safety, protects the chimney’s structure, and boosts energy efficiency. This upgrade can extend the life span of an old chimney while meeting modern safety standards.

Pellet stoves are safer than wood stoves in many ways. They don’t produce as many creosote deposits as wood stoves do, they create less smoke, and the flames are contained, decreasing the risk of any sparks or embers creating a house fire. Pellet stoves also burn more cleanly and efficiently than wood stoves do.

While hardwoods are the best woods to burn, a few types of woods should be avoided when burning. Wood that has not had time to season, or “green wood,” should be avoided. The extra water in the wood makes it smoke horribly, which is not a quality you want. Additionally, it’s best to avoid any wood that is manufactured or has been treated, including coated or sealed wood, painted wood, or pressure-treated wood. These woods have chemicals that will be released into your air when burned and can cause health problems.

The height of the chimney for your outdoor fireplace depends on where the fireplace is located. Ideally, the chimney should be 2 to 3 feet higher than surrounding structures; this allows smoke to ventilate properly without endangering anyone or anything.

Note: Your municipality may have strict requirements regarding chimney heights, so it’s always a good idea to check local building codes.