FAQs

Frequently Asked Questions


A hygrometer is a device that measures the amount of humidity in a particular area.

No, you will have to call Aprilaire directly at 800-334-6011.

No, but you can find our products at Canadian Tire, Lowes, Sears or Amazon.com

We will send you out a new one. The pleats are counted by hand and sometimes by human error get counted wrong. 

Our essential oils are not food grade oils and are for external use only.

According to ASHREA (American Society of Heating, Refrigeration & Air-Conditioning Engineers) a good range is between 30% and 60% relative humidity. A wider range, from a low 25% to a high of 80%, can be acceptable for thermal comfort (your comfort level). It would depend on the type of clothing worn and your level of physical activity.

The arrow should point towards the furnace, not away.

The A35 is a metal pad that is dipped in clay and can last up to a year and the A35W is a paper pad with aluminum to help hold its shape and lasts up to 90 days. The paper pad puts more moisture into the air and helps more with allergies.