Eero requires a modem to connect to the internet

Yes, Eero needs a modem to work. Eero is a mesh Wi-Fi system that creates wireless networks inside your home, but it cannot connect directly to your internet service provider (ISP). The modem is the device that receives the internet signal from your ISP and converts it into data your Eero system can use. Without a modem, Eero has no internet to distribute.

Think of it this way: the modem is the bridge between your ISP and your home network. Eero is the system that spreads that internet signal wirelessly throughout your house. You need both working together.

Key Takeaways

  • Eero cannot function without a modem because it has no direct connection to your internet service provider.
  • Your modem connects to the ISP line, and Eero connects to the modem to receive and broadcast internet throughout your home.
  • You can use any modem compatible with your ISP, not just one sold by Eero or your service provider.
  • If your ISP provides a combined modem-router unit, you can still use Eero by connecting it to that device instead of replacing it.

How the modem and Eero work together

The connection chain is straightforward: ISP line → modem → Eero → your devices. Your modem plugs into the wall outlet where your ISP's cable, fiber, or DSL line enters your home. The modem receives that signal and converts it into an ethernet connection. You then plug one Eero unit (called the router node) into the modem using an ethernet cable.

Once connected, that first Eero unit receives the internet from the modem and broadcasts it as Wi-Fi. The other Eero units in your home pick up that signal and repeat it, extending coverage to every room. But none of this happens without the modem providing the initial internet connection.

What type of modem you need

You do not have to use a specific modem brand or model. Any modem that works with your ISP will work with Eero. The key is matching the modem to your internet type: cable modems for cable internet, DSL modems for DSL, fiber modems for fiber connections, and so on. Your ISP can tell you which types are compatible with your service.

Many people rent modems from their ISP for a monthly fee (typically $10 to $15 per month). You can also buy your own modem outright, which pays for itself within a year or two. Popular modem brands that work with most ISPs include Netgear, ARRIS, Motorola, and TP-Link. Check your ISP's list of approved modems before buying to make sure it will work on their network.

If your ISP provides a combined modem-router unit

Some ISPs provide a single device that combines modem and router functions. This is sometimes called a gateway or all-in-one unit. You can still use Eero with this setup—you do not need to replace the gateway. Instead, connect your Eero router node to the gateway using an ethernet cable, then put the gateway's Wi-Fi network into bridge mode or disable its Wi-Fi entirely.

This prevents two Wi-Fi networks from competing in your home and keeps your ISP's device doing what it does best (connecting to the internet) while Eero handles the wireless coverage. Your ISP's support team can walk you through disabling the Wi-Fi on their device if you are unsure how.

Setting up Eero with your modem

Once you have a modem and Eero, the setup takes a few minutes. Plug the modem into power and the ISP line, then wait for it to fully boot (usually 2 to 3 minutes—you will see lights stop blinking). Plug your main Eero unit into power and connect it to the modem with an ethernet cable. Open the Eero app on your phone, create an account, and follow the on-screen steps to name your network and set a password.

After the main unit is set up, place the other Eero units around your home (within range of the main unit or each other) and power them on. The app will guide you through adding them to your network. The whole process usually takes 10 to 15 minutes.

Common mistakes to avoid

The most common error is plugging Eero directly into the wall where the ISP line enters, thinking it will work like a modem. It will not—Eero cannot read the ISP signal. You must have a modem in between. Another mistake is using an old or incompatible modem that cannot handle your ISP's speeds. If your internet plan is 500 Mbps or faster, make sure your modem supports those speeds; older modems may cap your connection much lower.

Do not disable the modem's Wi-Fi if you are not sure how, or if you plan to use both the modem's network and Eero's network. Two overlapping networks with the same name can confuse your devices about which one to connect to. If you want to keep the modem's Wi-Fi active, give it a different network name so devices can choose clearly.

What happens if your modem fails

If your modem stops working, your entire home loses internet—Eero cannot fix that. Eero can only spread the internet the modem provides. If you lose connection, restart the modem first by unplugging it for 30 seconds, then plugging it back in. Wait 2 to 3 minutes for it to fully restart. If that does not work, contact your ISP to check whether there is an outage or a problem with your account.

Having a backup modem on hand is not practical for most people, but knowing how to restart yours quickly can save you a support call. Keep the modem in a well-ventilated spot (not in a closet or cabinet) so it does not overheat.

Frequently Asked Questions

Can I use Eero without any modem at all?

No. Eero is a Wi-Fi mesh system, not a modem. It cannot connect directly to your ISP's line or receive internet without a modem in between. You must have a modem to use Eero.

Do I have to buy a modem from Eero or my ISP?

No. You can buy any modem that is compatible with your ISP's network. Check your ISP's approved modem list before purchasing. Buying your own modem often costs less over time than renting one from your ISP.

What if I have a modem-router combo from my ISP?

You can keep it and connect Eero to it using an ethernet cable. Disable the combo unit's Wi-Fi so Eero handles all wireless coverage. This avoids having two competing networks in your home.

Will Eero work if my modem is in another room?

Yes, as long as the ethernet cable can reach from the modem to your main Eero unit. The cable can run along walls or through conduit. Once the main Eero unit is connected, the other units communicate wirelessly, so they do not need to be near the modem.

What should I do if my internet is slow even with Eero?

First, restart both the modem and Eero by unplugging them for 30 seconds. If speed is still low, your modem may not support your ISP plan's speeds. Check your modem's specifications against your plan's speed tier. You may need a newer modem to reach the speeds you are paying for.