See indoor-air-quality equipment on a real furnace — check a box to add a unit, click a label on the picture to learn how it works.

Indoor air quality — see it on a real furnace

Check the equipment you're curious about — stack as many as you like. A home gets ONE humidifier, so picking a second one swaps it.

Upflow high-efficiency gas furnace with drain pan and float switch

Steam humidifier

Bypass humidifier

Fan-powered humidifier

UV air scrubber

HRV / ERV — fresh air

Ducted dehumidifier

Standalone dehumidifier

Check what you want to see

Everything at oncethe full teaching view — all of it installed

Humidifiers — one per home (picking another swaps it)

Steam humidifieron the wall

Bypass humidifieron the return side

Fan-powered humidifieron the supply plenum, above the coil

The drain pan + float switch are in every view — every good install has them.

Stack these with anything

UV air scrubberthe blue box on the supply plenum

HRV / ERV — fresh air machinehung from the joists, above the dehumidifier

Dehumidifiers — one per home (picking the other swaps it)

Ducted dehumidifierpiped into the cold-air drop

Standalone dehumidifiersame spot, no ductwork

The air cleaner cabinet is in every view — every system has one. Click a checked item's name again to re-read its story. Explanations open under the picture.