Devices that negatively impact Your WiFi Network

23 August 2023

Have you ever wondered why your WiFi connection suddenly becomes unstable or starts to “lag”? Perhaps you attributed it to temporary technical issues, or you began to consider buying a new, better router. However, setting aside these initial suspicions, it’s important to remember that many factors affect the quality of the WiFi signal in our homes and workplaces. In fact, many of these issues are caused by surrounding devices, which we wouldn’t suspect of disrupting our connection.

Let’s start by answering the question: what are “WiFi interferences”? In simple terms, interferences are disruptions to the WiFi signal caused by other electronic devices or physical obstacles. They can affect the quality and speed of data transmission in a wireless network. It’s worth noting that in our homes, there are many potential sources of interference, from microwave ovens to TVs or even neighbors’ networks. Yes, that’s right! Your neighbor’s WiFi network might be one of the reasons why your connection isn’t working as you’d like.

In addition, there’s also the issue of channel congestion. If we compare this to road traffic, imagine a highway full of cars. When there are too many vehicles, traffic begins to get congested, just like our WiFi signal when there are too many networks operating on the same channel.

You’re probably wondering now, how to deal with this? How to avoid WiFi disruptions and enjoy a stable internet connection? In the next part of this article, we’ll try to answer these questions and offer some practical solutions. I warmly invite you to continue reading!

1. Routers and Neighboring Networks:

Each of us has this small device in our home that we call a router. But how exactly does it work, and why does it sometimes seem to “clash” with other routers in the vicinity? Let’s start with the basics.

How do routers work and why can they interfere with each other?

At its simplest, a router is a device that distributes the internet signal in your home via radio waves. It operates on specific frequency channels, which can be likened to lanes on a highway. However, unlike a highway where cars can travel beside each other without interference, radio waves from different routers can “cross paths” if they operate on the same or adjacent channels. Consequently, if your neighbor has their router set to the same channel as yours, you both might experience mutual disruptions.

The impact of neighboring networks on your home network:

If you live in an apartment building, you’ve undoubtedly noticed that when you search for available WiFi networks on your device, a myriad of names pop up, most of which are networks from your neighbors. This indicates that numerous networks are operating simultaneously in your vicinity. Consequently, if many of these networks function on the same channel, something called “channel congestion” occurs. This is a situation where too many networks try to transmit data through the same channel, leading to mutual interferences.

Additional wireless networks within a single home:

In some homes, there’s more than one WiFi network – for instance, a primary and guest network or separate networks for different floors. While this might seem convenient, it can also lead to internal disruptions, especially if both networks are set to the same channels. Therefore, to ensure optimal performance, it’s crucial that these networks operate on different channels and are configured correctly, avoiding mutual interferences.

In summary, routers are indispensable tools in our daily lives, but their proper configuration is key to ensuring the best connection quality. Taking care to avoid interference from neighboring networks and appropriately setting up your own networks at home can significantly enhance your internet experience.

2. Bluetooth Devices:

Bluetooth technology has become an integral part of our daily lives. Headphones, speakers, keyboards, smartwatches – all these devices utilize Bluetooth to connect with other devices. But while this technology offers numerous benefits, it can also be a source of certain issues, especially when talking about WiFi. But why?

Why can Bluetooth interfere with WiFi?

Let’s start with the fact that both Bluetooth and WiFi operate on the 2.4 GHz band. Although they were designed to minimize interference, they can actually cross paths, especially in areas with a high density of devices. When a Bluetooth device is transmitting data, it can cause temporary disruptions in WiFi transmission, leading to data packet loss or delays. It’s worth noting that while newer versions of Bluetooth have been optimized for coexistence with WiFi, they can still cause some disturbances.

What typical Bluetooth devices cause interference?

Not all Bluetooth devices are equally guilty when it comes to interference with WiFi. Some typical devices that can cause disturbances include:

  1. Bluetooth headphones and speakers: Often used in close proximity to computers or smartphones, these can cause momentary disruptions, especially when transmitting large amounts of data.
  2. Bluetooth mice and keyboards: While they transmit relatively little data, their constant activity can introduce additional interference.
  3. Smartwatches and fitness bands: These devices regularly sync data with our smartphones or computers, which can lead to temporary interferences.
  4. Other gadgets and accessories: Drones, game controllers, or even some toys might utilize Bluetooth technology and affect WiFi connection quality.

In conclusion, while Bluetooth technology undoubtedly offers many conveniences in everyday life, it’s essential to be aware of its potential impact on WiFi connection quality. Through proper configuration and placement of devices, one can minimize potential disruptions and enjoy a stable connection.

Girl listening to music through Bluetooth headphones

3. Electronic Babysitters:

Electronic babysitters, although seemingly harmless to our internet connection at first glance, can actually become one of the most problematic sources of interference. Let’s delve into why.

What disturbances can electronic baby monitors cause?

Many parents use electronic baby monitors to ensure that their little ones are safe during naps or nighttime sleep. However, many of these devices, especially older models, operate on the 2.4 GHz band – the same one in which standard WiFi networks operate. In practice, this means that a baby monitor transmitting image and sound to a receiver in another room can interfere with the WiFi signal. It’s worth noting that disturbances can occur even when the baby monitor and the router are separated by a significant distance, especially if both devices operate on the same channels.

4. Microwave ovens and induction cooktops:

When we think of potential disruptions to our WiFi network, we rarely associate it with kitchen appliances. However, both microwave ovens and induction cooktops can affect the connection quality in our home. Let’s take a closer look at this phenomenon.

Why does a microwave oven cause WiFi interference?

Let’s start with the microwave oven. Its operation is based on emitting electromagnetic waves at a frequency of about 2.45 GHz, to heat food. Do you notice the similarity? Yes, it’s a frequency close to 2.4 GHz, on which a large portion of WiFi networks operate. As a result, when you use a microwave, there can be WiFi signal interference, especially if the router is located near the kitchen appliance. These disturbances are usually temporary and occur only during the microwave’s operation, but they can be very annoying, especially if you are using the Internet for important tasks at that time.

Do induction cooktops really interfere with the network?

Moving on to induction cooktops, their mechanism of operation relies on utilizing a magnetic field to heat kitchen vessels. Although these appliances do not operate precisely on the same frequency as WiFi, they can emit electromagnetic disturbances. These disturbances can affect the connection quality, especially if the router is placed close to the cooktop.

It’s worth noting that modern models of induction cooktops are usually better shielded and produce fewer disturbances, but they can still be a source of issues, especially in older homes with dense construction and multiple WiFi networks in the immediate vicinity.

In conclusion, if you notice that your WiFi network is unstable while cooking dinner, it might be worth considering relocating your router to a more distant place or investing in more advanced kitchen appliances.

5. Televisions and other electrical devices:

Every electrical device, including televisions, emits an electromagnetic field (EMF) to some extent. This can interfere with other devices in its vicinity, including WiFi routers. Let’s take a closer look at how this works.

How can the electromagnetic field from a television or other electrical devices affect a router?

Televisions, especially older CRT models, generate a significant electromagnetic field during operation. Even newer LCD and OLED TVs can emit some disturbances, though usually to a lesser extent. When a router is placed close to a TV, the electromagnetic field can interfere with the WiFi signal, causing speed drops, lags, or even connection loss. In fact, it’s worth noting that not only the TV’s EMF can be an issue. Many smart TVs have built-in WiFi modules which can also conflict with the home network.

What other household devices can cause interference?

That being said, televisions are just the tip of the iceberg. Other electrical devices, such as air conditioners, fans, refrigerators, washing machines, and vacuum cleaners, also generate electromagnetic fields. Even fluorescent lamps and some LED bulbs can cause WiFi disturbances if they are too close to the router.

Furthermore, devices like cordless phones operating at a frequency of 2.4 GHz can directly interfere with the WiFi signal. Even certain devices, which may seem harmless like aquariums (due to pump motors) or digital picture frames, can be a source of interference.

In conclusion, it’s important to be aware of the many devices in our homes that might unknowingly affect the quality of our WiFi connection. By ensuring proper placement of the router and avoiding placing it directly next to potential sources of interference, we can significantly improve the quality of our internet connection.

Woman watching TV from a television on a cabinet

6. Mesh Systems:

Mesh networks represent a revolution in the world of home WiFi systems – they offer us better signal coverage and eliminate dead zones. However, like many other technologies, they have their pitfalls. Let’s consider why they might cause disturbances and how to optimize them.

What are mesh systems and why might they cause interference?

Mesh networks consist of multiple access points, known as nodes, that collaborate to deliver a WiFi signal to every corner of the home. Unlike traditional routers, which have a single point of signal emission, mesh networks operate based on multiple nodes placed in various locations, ensuring broad and consistent coverage.

However, with multiple nodes operating simultaneously, there’s a risk of interference among them, especially if they operate on the same or adjacent channels. Moreover, if the mesh network is set up in the vicinity of other WiFi networks, there can be channel congestion, increasing the risk of disturbances.

How to optimize mesh network settings to minimize interference?

  1. Automatic channel selection: Many modern mesh systems have an automatic channel selection feature that chooses the least congested channel for each node. It’s worth noting that activating this option can help minimize interference.
  2. Node placement: Ensure that the nodes are placed at appropriate distances from each other. Too close together, they may interfere with each other, but too far apart, they might not communicate effectively.
  3. Use different bands: If your mesh system supports both the 2.4 GHz and 5 GHz bands, consider splitting devices between these two bands. For instance, devices requiring higher speeds could use the 5 GHz, while older devices might remain on 2.4 GHz.
  4. Firmware updates: Manufacturers often release software updates that address compatibility and interference issues. Regularly checking and installing updates can help maintain the system’s optimal performance.
  5. Plan for the future: If you plan to expand your mesh network in the future, ensure that the added nodes are compatible with the current system and are appropriately configured to minimize potential interference.

In the end, although mesh networks have the potential to interfere with one another, proper configuration and placement can help minimize these issues and ensure a stable WiFi connection.

7. WiFi-based Monitoring:

There’s no doubt that technological advancements have brought many conveniences to our homes. WiFi-based monitoring is one of those innovations that have made our daily lives more pleasant. However, every coin has two sides. Here’s why monitoring can pose a challenge to your home WiFi network.

Why can WiFi-based monitoring systems disrupt the network?

WiFi-based monitoring systems, such as security cameras or video doorbells, are constantly connected to the network and regularly transmit data. This continuous connection can lead to several issues:

  1. Increased network load: Real-time monitoring, especially with high-resolution cameras, can significantly increase network bandwidth usage, potentially slowing down other devices.
  2. Interference with other devices: Cameras and other monitoring systems may operate on the same channels as other household devices, which can lead to interference and connection instability.
  3. Range issues: Most security cameras are placed in strategic locations, which aren’t always near the router. This can result in weak signals and connection problems.


We are living in an era where almost every aspect of our lives is intertwined with technology, and the WiFi network is the heart of our digital homes. However, like any vital organ, the WiFi network is also susceptible to various interferences. In this article, we discussed different sources of interference, from neighboring routers to Bluetooth devices, and even WiFi monitoring.

However, all is not lost. There are specific solutions and ways to minimize disruptions and optimize connections. The key is to be aware of the problem, regularly monitor the network, and adjust settings according to individual needs.

If you’re wondering why your WiFi doesn’t cover your entire home, or if you want to delve deeper into the topic, we encourage you to read our previous article: “Why Doesn’t Your WiFi Network Cover Your Entire Home?“. There, you’ll discover many intriguing facts, such as the impact of router location on range and how obstacles in the home can affect connection quality. You’ll also learn ways to identify and solve WiFi range issues.

Education on WiFi networking is an investment that pays off in the long run. The more you know, the better you can tailor your network to your needs. And with our help, you can be sure that your WiFi connection will always be top-notch. Thank you for reading, and we encourage you to continue expanding your knowledge!

Sources and References

This article utilized information from the following sources:

  1. 2.4 GHz band uses on Wikipedia: