Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to maintain pellet stoves [title] Hire a professional for annual cleaning. [step] Before the heating season, hire a professional to inspect your stove. They will inspect all the parts but also clear out ash in parts difficult for you to handle, such as the vents and chimneys.

Ending1: This is important to prevent chimney fires and smoke leaking from the stove. [substeps] If your stove is newer, check your service contract. Ending2: Your electric cleaner might not make it into your stove, so if so, hire a professional to update your heating. [title] Consult a licensed professional about materials used in the stove. Ending3: Because burners can clog up with ash, hire a professional to assess chips and other damage. [substeps] A full staff cleaning will identify noncombustible parts of your stove. Ending4: Your contractor will also need to clean the stoves, internal and outside. [substeps] Hire someone to detail any issues or problems and then take their findings to your garage.

Answer format: ending1/ending2/ending3/ending4