IAQ Proposals: Filters, UV, and Humidifiers

Suppose a homeowner asks about winter dryness and smoke during wildfire season. The proposal offers a filter, UV lamp, and humidifier as one “healthy home package.” In this illustrative sale, the bundle hides three different purposes and invites expectations the installation cannot establish.

Start an HVAC proposal with the reported concern, affected rooms, season, and existing conditions. Keep reported symptoms separate from a technical finding or medical diagnosis.

Match the measure to the problem

EPA's IAQ guidance describes source control, ventilation, and air cleaning as distinct strategies. An accessory cannot substitute for investigating the source it does not address.

Use an inspection report to record the system, readings, accessible conditions, and unknowns. Refer source, moisture, combustion, or environmental concerns to the appropriate qualified party when they exceed the agreed investigation.

Filtration: specify fit and operation

EPA's air-cleaner guide recommends MERV 13 or the highest efficiency the system can accommodate. Check the fan, slot or cabinet, fit, operating conditions, and applicable equipment instructions before promising an upgrade.

The scope should name media and cabinet models, dimensions, quantity, transitions, sealing, access, control changes, and the operating checks to be recorded before and after installation. State what happens if the proposed selection does not support acceptable system operation.

Carry the installed product and initial condition into the filter log. Include replacement part numbers, inspection timing, supply responsibility, and recurring cost or pricing method.

UV: define the actual application

A coil-surface device and a moving-air treatment system need different selection evidence. Name the target, exact product, installation position, application basis, controls, safe-service provisions, and maintenance requirements.

NIOSH's GUV guidance addresses upper-room systems, including qualified design and eye and skin exposure risks. It does not size an in-duct or coil device. Use the exact product instructions and qualified application review for the system being sold.

For powered air-treatment products, check relevant ozone documentation and sales restrictions. EPA's ozone guidance warns that an EPA establishment number does not establish safety or effectiveness. Do not present it as product approval.

Humidification: price the controls and maintenance

Specify the unit, area served, water connection, drain, electrical work, sensors, controls, access, and seasonal operating instructions. Identify other-trade work and finish repairs in the scope attachment.

EPA's humidifier guidance advises against indoor humidity above 50% and calls for reducing output when condensation appears. That is not permission to set every building to 50%; conditions and product instructions still matter.

Record the commissioning setting and conditions. Explain adjustment and shutdown instructions, cleaning, pad or canister replacement, drain checks, and who performs each task. Follow central-unit instructions rather than copying a portable humidifier's cleaning routine.

Keep the sales claim and acceptance test consistent

Avoid claims of guaranteed allergy relief, infection prevention, or a mold-free building without evidence supporting the exact claim. FTC health-products guidance addresses both express and implied messages. A disclaimer cannot correct a contradictory headline.

Offer options tied to a purpose and verification method. Price installation, commissioning, consumables, and follow-up separately where appropriate. The written-quote guide explains how to preserve those choices before approval.

Issue an HVAC work order carrying the accepted selection. At handoff, record models, settings, checks actually performed, readings with context, manuals, maintenance dates, and outstanding issues. Follow the photo guide, then use a completion sign-off that identifies open items.