Humidifier filters and running costs
What you keep buying after the humidifier, and where to read it.
Filters and wicks
Evaporative models use a wick, belt, or filter. The EPA says to follow the maker's instructions on the use, maintenance, and replacement of materials supplied with the humidifier. Find the part number and schedule in the manual before you buy, and see the current price at the retailer.
Demineralization cartridges
Some models use cartridges or cassettes to reduce minerals. The EPA says their ability to remove minerals "may vary widely." Note the replacement schedule the maker lists.
Water
The EPA says that where tap water is high in minerals, "using distilled water may be less expensive than cartridges, cassettes, or filters." Count the water you will buy as a running cost.
Electricity
The maker lists power use in watts on the label or product page. Steam and warm mist models heat water, so compare their listed wattage with cool mist models. We do not estimate a bill.
Where to find the numbers
Running costs change by model, by retailer, and by your local rates. See the current price at the retailer for parts, and your utility bill for power rates.
This is general information, not medical or purchasing advice.
Sources: EPA, Use and Care of Home Humidifiers.
FAQ
Next: buying checklist
A short list before you pay.
