Q. It is going to be heating season fairly soon. I have my furnace serviced every two years for efficiency. Is there any do-it-yourself maintenance I can do each fall to keep it running properly? A.

Q: Do furnace ducts ever need to be cleaned? We’ve lived in our house for 27 years and have never had the ducts cleaned. A: In most cases, regular duct cleaning is not necessary. Often, you can do ...