Dear Jim: I have a central air cleaner on the furnace, but my allergist recommended room air cleaners too. How can I tell which ones are most effective? Is there much difference in electricity use? — ...

Keeping your furnace clean is important in order to have it run properly in winter (or year-round if you have whole-house air conditioning). A clean furnace will burn less fuel -- thus saving you ...

Dear Jim: I have a central air cleaner on the furnace, but my allergist recommended room air cleaners too. How can I tell which ones are most effective and is there much difference in electricity use?

Q: My family has sinus allergies, so I want to use air cleaners in our bedrooms. The ads for each one make it sound like the best. How can choose the best one? Several of my children have allergies so ...

Dear Jim: We have a good central air cleaner, but I keep seeing ads that I also need room air cleaners. Do I really need room air cleaners, too? If I do, what types and sizes of room air cleaners are ...