
Does anyone in the house have allergies, asthma, or other respiratory problems?

Does anyone in your family suffer from headaches, nasal congestion, or other sinus problems?

Is there a smoker in the house?

Do you have dogs, cats or other pets?

Do you notice "musty" or "stale" odors when the furnace or air conditioner runs?

Do you notice dust on your furniture shortly after cleaning?

Does it seem like there is not enough air flow coming from your vents?

Is your furnace equipped only with a standard throw-away fiberglass filter?