Indoor air quality marketing is the HVAC attach sale: filtration, UV and air-cleaning equipment sold alongside a repair or a replacement. EPA material says what each device does, the FTC requires substantiation before a health claim runs, and both lines sit well short of what most IAQ service pages promise.
Every EPA and FTC fact below comes from those agencies' own published pages as of October 2026. Nothing here is legal advice, and an advertising lawyer owns the final read on any sentence you publish.
What the EPA says air cleaners can and cannot do
EPA's Guide to Air Cleaners in the Home ranks three strategies, and filtration is third. Source control comes first, then ventilation with outdoor air, and portable air cleaners plus higher-efficiency HVAC filters supplement both. That order is the honest frame for an IAQ pitch: filtration helps, and it does not replace finding the source.
The same guide gets specific where contractor marketing stays vague. For consumers concerned about small particles, EPA recommends a furnace filter rated at least MERV 13. For gases rather than particles, it points to activated carbon or another filter designed to remove gases. That is a sellable, sourced upgrade path, and neither sentence mentions anybody's health.
Which IAQ claims have primary-source support
Claims about what a device physically does to particles or gases are the supportable ones. EPA material supports that a MERV 13 or better filter captures more small particles, that activated carbon removes gases, and that UV germicidal irradiation cleaners use ultraviolet radiation that may destroy biological pollutants. Note the word may, because EPA chose it.
Photocatalytic oxidation cleaners, in EPA's description, pair a UV lamp with a catalyst that reacts with the light. That is a mechanism, not a result, and the gap between the two is where IAQ marketing gets into trouble. A lamp that kills organisms in a test chamber has not been shown to change the air in a two-story Charlotte house with leaky returns.
Which IAQ claims have already drawn FTC action
Germ, flu and allergy relief claims are the ones regulators have moved on. In April 2011 the FTC announced a settlement requiring Oreck to stop claiming two of its appliances could reduce the risk of flu or eliminate virtually all common germs and allergens. Oreck paid $750,000 and could not repeat the claims without competent and reliable scientific evidence.
Ozone-generating devices sit in their own category. EPA's page on ozone generators states that no federal agency has approved these devices for use in occupied spaces, that ozone is generally ineffective at controlling indoor air pollution at concentrations within public health standards, and that some studies found generators exceeding health standards even when the manufacturer's instructions were followed. EPA adds that it does not certify air cleaning devices, and that an establishment number printed on packaging implies no endorsement.
Living Air Corporation and Alpine Industries settled FTC charges in 1995 over unsubstantiated claims that their ozone generators could clean indoor air pollutants and prevent or relieve allergies and asthma. So any ionizer a distributor puts in front of you deserves one question, answered in writing: does it intentionally produce ozone?
| What the page says now | What a primary source supports | What to write instead |
|---|---|---|
| Kills 99.9% of viruses in your home | EPA says UVGI cleaners use UV radiation that may destroy biological pollutants; no source supports a whole-house kill rate | Name the device, the air it treats and the manufacturer's test conditions, and attribute the number |
| Eliminates allergens and relieves allergy symptoms | Symptom-relief claims drew an FTC settlement in April 2011; health claims need competent and reliable evidence | A MERV 13 or better filter captures more small particles than the stock filter |
| Hospital-grade air purification | EPA does not certify air cleaning devices, so no federal grade exists to borrow | Give the MERV or HEPA rating and what it captures |
| EPA approved | EPA says an establishment number on packaging implies no endorsement or finding of safety | Cut the phrase; cite the rating standard |
| Our ionizer purifies the whole home | EPA says ozone is generally ineffective at controlling indoor air pollution within public health standards | Ask in writing whether it intentionally produces ozone, then publish the answer |
| Improves your indoor air quality | EPA puts source control first, ventilation second, filtration third | Name the pollutant, the likely source, and where filtration fits |
The substantiation standard behind an IAQ ad
Advertising substantiation is the rule that decides whether an IAQ claim can run. The FTC's Health Products Compliance Guidance sets two principles: an ad must be truthful and not misleading, and the advertiser must already hold adequate substantiation for every objective claim before the ad goes out. Health-benefit claims generally need competent and reliable scientific evidence.
The guidance states that principle this way: "Before disseminating an ad, advertisers must have adequate substantiation for all objective product claims conveyed, expressly or by implication, to consumers acting reasonably." The phrase doing the work is by implication. A page that never says asthma, but pairs a UV lamp with a photo of a child using an inhaler, has made the claim anyway.
The guidance also says testimonials do not constitute substantiation, so a wall of reviews about breathing easier does not support what those reviews assert. And a results-not-typical disclaimer does not cure a testimonial reporting more dramatic results than users can generally expect. The document is guidance written around health products rather than contractors, and says plainly that it does not carry the force of law.
How to write the IAQ service page
An IAQ service page that survives a complaint describes equipment and conditions, not health outcomes. Name the pollutant class, the device, its rating, what the manufacturer tested and under what conditions, and what the homeowner should fix first. Put the EPA's order on the page: source, ventilation, then filtration.
- Lead with the measurement you will take, not the problem you will imply: what the filter rack accepts, what the current filter is rated for, what the static pressure reads.
- Attribute every number. A manufacturer's chamber test is a manufacturer's chamber test, and saying so protects the claim.
- Keep health language off the page. Ratings and airflow are defensible; symptom relief has been litigated.
- Say what IAQ equipment will not do. A homeowner who reads one honest limit believes the rest of the page.
How to offer IAQ at the visit without a health claim
At the visit, the honest IAQ offer is a measurement and a choice. A technician reports what the filter rack can accept, what the current filter is rated for, what the static pressure reads, and what a higher-rated filter would do to airflow on that specific system. The homeowner decides against numbers rather than against fear.
That last item is the one most IAQ scripts skip, and skipping it is how a MERV 13 upsell turns into a callback. A denser filter restricts airflow, and a system not designed for it says so in static pressure, in comfort, and eventually in a blower motor. The sentence that keeps the sale and the relationship: here is what your system can take, and here is what I would not put on it.
What IAQ marketing looks like when the system runs it
What unit is the report in? Booked jobs, and for IAQ that means IAQ work attached to completed calls, not impressions on a filter page. The reporting layer counts which channel produced the call, whether the call was booked, and whether an IAQ upgrade was offered and accepted on that visit.
Those are the mechanics Mirastart builds: missed-call text-back so the 7pm filter question reaches a booking link, follow-up that makes the upgrade offer after the visit rather than hoping a technician remembered, and one monthly report in calls, booked jobs and attach rate by channel. The same machinery runs for Charlotte businesses, including the booking and repair-status software Quick Auto NC runs its bays on and the live-availability booking system behind this site's discovery-call page.
Sources
- US EPA - Guide to Air Cleaners in the Home - Source control, ventilation and filtration as a supplement; the MERV 13 recommendation; activated carbon for gases; UVGI and PCO device descriptions.
- US EPA - Ozone Generators that are Sold as Air Cleaners - No federal approval for use in occupied spaces; ozone generally ineffective at concentrations within public health standards; EPA does not certify air cleaners and an establishment number is not an endorsement.
- FTC - Health Products Compliance Guidance - The two advertising principles, the quoted substantiation sentence, competent and reliable scientific evidence, and that testimonials are not substantiation.
- FTC - Settlement Requires Oreck Corporation to Stop Making False and Unproven Claims That Its Ultraviolet Vacuum and Air Cleaner Can Prevent Illness (April 2011) - The flu-risk and germ-elimination claims, the $750,000 payment, and the bar on repeating them without competent and reliable scientific evidence.
- FTC - Living Air Corporation (1995) - Consent agreements with two ozone generator marketers over unsubstantiated air-cleaning and allergy or asthma claims.