Three complete setups
Quick answer
Three builds: Starter at $133, Whole home at $569, Expert at $1381. They are genuinely different setups rather than one list at three prices, because each tier adds a capability the one below it does not have, and the expert tier adds instruments rather than larger machines.
Counted over five years with replacement filters, the same three come to a very different set of numbers, which is the comparison worth making.
GermGuardian HEPA Air Purifier - Large Room Air Purifier for Bedroom, Office, Dorm, and Home - Filters Pet Dander, Dust, Pollen, Smoke, Scents - AC4825E - 22" Tower - Gray
The anchor of the starter setup: one room done properly at the air change rate that actually clears it, which beats three rooms done partially.
Prices move, and every total on these pages is rebuilt from the current listings each time the site is published.
| Setup | Who it is for | Items | To buy | Five years |
|---|---|---|---|---|
| Starter | somebody buying their first purifier, usually for a bedroom, who wants to spend once and not discover the filter cost later | 4 | $132.58 | $212.10 |
| Whole home | a household covering the rooms people actually spend time in, with a basement or a damp room in the picture | 8 | $568.67 | $740.15 |
| Expert | somebody with a specific reason: a smoke season every year, a basement with a history, or a house where the ventilation is genuinely poor | 9 | $1380.64 | $1472.60 |
Get all three setups as one printable list
One page with every item in this setup and its current price, plus the five year filter cost, so you can total the whole thing before buying any of it. No sequence of sales emails.
We use this to send the list. You can also just read it on the site.What each tier actually adds
- Starter: lowest total cost to one room that genuinely meets four and a half air changes an hour.
- Whole home: the buy once position: every occupied room at four and a half air changes an hour, and the moisture dealt with at source.
- Expert: the performance ceiling, with the invisible risks measured rather than assumed.
The ladder is built so that nothing is bought twice. Moving up a tier adds machines and instruments rather than replacing what the tier below already had, which is the difference between a genuine upgrade path and three separate shopping lists.
What is in these setups
Common questions
Which setup should most people buy?
The starter setup, at $132.58, unless there is already a known damp space or a smoke season every year. One room done at four and a half air changes an hour is worth more than three rooms at a rate that clears nothing, and the hygrometer in it tells you whether the next purchase should be a dehumidifier instead.
Why does each setup include a measuring instrument?
Because filtration is the only part of indoor air quality people routinely buy blind. A hygrometer is the cheapest item on this site and it decides whether a room has a moisture problem or a dust problem, which need different machines. A particle monitor tells you whether the machine you bought is doing anything at all.
Is the expert setup worth it?
For most households, no, and the page says so plainly. It exists for a specific set of reasons: an annual smoke season, a basement with a history, or a house where ventilation is genuinely poor. Its honest advice is to buy the monitors first, run them for a month, and then buy only what the readings justify.
Can I mix items between the tiers?
Yes. The usual sensible mix is the larger purifier from the tier above with everything else from the tier you are in, because a machine one class larger reaches the same airflow at a lower fan speed. Quieter machines get left running, and a machine that runs beats a machine that is rated higher.
Why is the five year total on every setup?
Because the filters frequently cost more than the machines. A setup costed only at the till is costed wrongly, and the gap between the two numbers is the part most buying guides leave out entirely.