If your fridge is close enough to the modem, it may interfere with the wifi signal. Fridges can affect radio frequency signals in general, regardless of how new or old they are.

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Does refrigerator affect WiFi signal?

Other than possibly blocking or greatly attenuating signal in specific directions, a refrigerator is unlikely to interfere. Wireless phones, microwave ovens, and other access points using the same or overlapping channels are the most likely sources of interference, at least in the 2.4GHz band.

Can I place router above fridge?

Additionally, metal absorbs signals, so it’s best to keep the router out of the kitchen if you have a metal fridge, stove, or other appliances. If you keep your cordless phone base station near your router, you’ll have to do the same for your router.

Which household appliance can interfere with your WiFi signal?

There are many reasons why a microwave might be interfering with your Wi-Fi signal at home. Since microwaves and Wi-Fi routers share a frequency, this is a common occurrence. Wi-Fi signals can be disrupted by microwave radiation that is often leak-proof, but this is not always the case.