Indoor air concerns: begin with the source

Describe the concern specifically

Is the issue visible dust, an odor, moisture, or a change after work in the home? Note where and when it occurs. Those observations are more useful than selecting an accessory before the source is understood.

Different tools do different jobs

Filtration, ventilation, and source control address different parts of an indoor-air concern. Ask what a proposed product can and cannot do and what maintenance it needs. Avoid treating a single device as a cure for every pollutant.

Review product claims

Request the manufacturer’s literature, compatibility information, and ongoing replacement costs. Ask whether a device produces ozone. S&S discusses equipment options without promising a medical or health outcome.

Persistent moisture needs attention

A recurring damp area or odor may involve drainage, insulation, building conditions, or another source. An air cleaner does not repair water intrusion. Identify the cause before choosing the remedy.

Compare the problem with the product’s actual function

Before buying an accessory, name the problem you want addressed. Particle filtration, gas removal, moisture correction and ventilation are different tasks. A device with an impressive feature list may not address the source of the concern you have described.

EPA explains that portable particle cleaners use a clean air delivery rate, or CADR, to help match the device to a room. That rating does not describe removal of every gas or odor. Compare the exact function, room size and maintenance requirements rather than interpreting “air purification” as a complete result.

• What source or condition is the proposal intended to address?
• Which pollutants or conditions fall outside the device’s function?
• What product-specific evidence supports the proposed use?
• What replacement materials and service will it need?
• How will we decide whether the original problem improved?

Sources: EPA guide to air cleaners and HVAC filters