Not every Aprilaire thermostat can connect to Wi-Fi at all — only five current models have the hardware for it: the 8476W, 8620W, 8910W, 8920W, and S86WMUPR. If yours is on that list, the app is AprilAire Healthy Air, and the single most common reason setup fails is trying to join a 5GHz network instead of 2.4GHz. Details below.
Does your Aprilaire thermostat even have Wi-Fi?
Aprilaire sells a wide range of thermostats, and most of them are not app-connected. The lineup uses a simple tell: a W at the end of the model number means Wi-Fi. Check the model number on the thermostat’s faceplate (below the screen on most models) or in its Settings/About menu.
Confirmed Wi-Fi models (as of this writing):
- 8476W
- 8620W
- 8910W
- 8920W
- S86WMUPR
Not Wi-Fi-connected (same lineup, no “W,” no app support): 8444, 8446, 8448, 8463, 8465, 8466, 8570, the plain 8620 (without the W), and the older mechanical/digital 8344, 8365, and 8348 series.
If your model isn’t on the Wi-Fi list, stop here: there’s no hidden Wi-Fi setting to dig for, no menu that unlocks it, and no firmware update that adds it. These are non-connected thermostats by hardware design. The only way to get app or remote access is to replace the unit with one of the five models above.
What app do you actually need
The current app for setup and day-to-day control is AprilAire Healthy Air, listed under that name on both the Apple App Store and Google Play (package com.aprilaire.remoteaccess). If your thermostat’s box or manual instead calls it the “Aprilaire Wi-Fi Thermostat App,” that’s the same app under an older label. The pairing flow is functionally identical.
There’s a second, different app: Aire Care. That one is a network-diagnostic tool, not a setup app; it scans your home Wi-Fi connection to find the cause of a failed pairing. You only need it if setup is already going wrong; don’t download it first expecting it to pair the thermostat.
How to pair your Aprilaire thermostat with Wi-Fi
- Download AprilAire Healthy Air from the App Store or Google Play and create an account (email, password, ZIP code, time zone).
- Power on the thermostat and wait. A strobing Wi-Fi signal icon on the screen means it’s in setup/pairing mode. This can take up to 30 seconds to appear after power-up.
- In the app, tap the “+” icon to add a device and select your exact model.
- On the S86WMUPR specifically, check the thermostat screen for a BLE (Bluetooth) icon before continuing: if it’s there, the app pairs over Bluetooth first; if it’s not, proceed with Wi-Fi. On the 8476W, 8620W, 8910W, and 8920W, there’s no Bluetooth step; the app pairs over Wi-Fi directly.
- Follow the app’s prompts to join the thermostat’s own network (it broadcasts an SSID with “APRILAIRE” in the name during setup).
- Select your home Wi-Fi network from the list the app shows and enter its password. Turn on “show password” while typing it. A mistyped character here is the single most common self-inflicted setup failure.
- Log in and finish registration. The app auto-fills the thermostat’s MAC ID; you name the device and assign it to a room.
The #1 real-world cause of failed connections: 2.4GHz vs. 5GHz
Aprilaire’s Wi-Fi thermostats use an 802.11b/g/n radio, which is 2.4GHz-only. They cannot join a 5GHz network, and if your router broadcasts one combined SSID that “band-steers” devices between 2.4GHz and 5GHz automatically, the thermostat can fail to connect or drop the connection after initially pairing.
The fix: go into your router’s settings and split it into two separate network names (one for 2.4GHz, one for 5GHz) instead of one shared name — then connect the thermostat specifically to the 2.4GHz SSID. This is the same failure mode that trips up most smart-home devices, not just Aprilaire’s, but it’s worth checking first since it explains the majority of “won’t connect” cases.
Other troubleshooting if it still won’t pair
- Check your Wi-Fi security type. Aprilaire’s radio supports WPA2 (AES), WPA/WPA2 mixed mode, WPA (TKIP), WEP, and open networks. It does not support WPA2 Enterprise (the login-based Wi-Fi common in offices, not home routers, but worth ruling out on a business-grade router).
- Check signal strength. Aprilaire’s own threshold is at least 2 bars between the thermostat and your router. If you’re borderline, move the router closer or turn off other 2.4GHz devices nearby (baby monitors and cordless phones are common interference sources).
- Rule out a router or internet outage. Check whether other devices on the network are online before assuming the thermostat is at fault. Once your router and internet are back, the thermostat reconnects automatically; you don’t need to redo setup.
- Run the Aire Care app. It performs a roughly two-minute network scan and reports the specific issue it finds, rather than making you guess.
- Still stuck after all of the above? Call Aprilaire support at (800) 334-6011. A failed pairing after confirmed 2.4GHz, correct password, and good signal points to a device-specific fault worth having them look at directly.
FAQ
What’s the actual name of the Aprilaire thermostat app? AprilAire Healthy Air. Some in-box guides and older manuals label the same app the “Aprilaire Wi-Fi Thermostat App”; it’s the same download and pairing process either way.
Does my Aprilaire thermostat support 5GHz Wi-Fi? No. Aprilaire’s Wi-Fi thermostats are 2.4GHz-only. If your router uses a single combined 2.4GHz/5GHz network name, split it into two separate SSIDs and connect the thermostat to the 2.4GHz one.
My Aprilaire thermostat doesn’t show any Wi-Fi setup option. Does it have Wi-Fi? Only if the model number ends in “W” (8476W, 8620W) or is the 8910W, 8920W, or S86WMUPR. Any other Aprilaire model has no Wi-Fi hardware. There’s nothing to enable in a menu.
Do I need the Aire Care app to set up my thermostat? No. AprilAire Healthy Air handles pairing and daily control. Aire Care is a separate diagnostic tool you’d only reach for if the Wi-Fi connection is failing and you need help finding out why.
Last reviewed: August 2026. App names, screens, and supported models can change with firmware and app updates. Confirm against your model’s manual and the current app store listing at aprilaire.com.
Wi-Fi model reference table
| Model | Wi-Fi? | Bluetooth pairing step? |
|---|---|---|
| 8476W | Yes | No |
| 8620W | Yes | No |
| 8910W | Yes | No |
| 8920W | Yes | No |
| S86WMUPR | Yes | Yes, check for BLE icon first |
| 8444, 8446, 8448, 8463, 8465, 8466, 8570, 8620 (no W), 8344, 8365, 8348 | No | N/A |
