I've gradually gotten into the smart home game after seeing it more as a gimmick many years back. The entire ecosystem has certainly come a long way and is notably more useful with the daily runnings of the household, controlling everything from lights and sensors to door locks and even lawn mowers. I've got an entire home surveillance system hooked up to the wonderful aggregator platform Home Assistant, which makes managing the smart home an absolute breeze.

There's always one issue with smart homes, however, and that's Wi-Fi instability. Even with the best mesh node setup or powerful access points, you're likely to experience connectivity problems with IoT hardware. Although I largely solved my Wi-Fi woes through the use of Zigbee, I didn't even know I still had an issue until ESPHome rolled out its latest update, version 2026.1.0. Prior to this update, I noticed that we still had the occasional drop from smart devices still tethered to Wi-Fi, though it wasn't as bad as before.

With 2026.1.0 installed, everything was improved. This update focused on improving Wi-Fi reliability across the board for all ESPHome devices, especially those running on more congested networks. But even if your airways are relatively clear, you'll likely still see a slight boost to reliability as we did.

I didn't know I had ESP issues

Wi-Fi was good enough

Although I moved as much as I could to Zigbee, our wireless network still handled the connectivity of some devices. I have a few ESP32-based devices around the home. These low-cost microcontrollers are fantastic for DIY smart home projects, and if you haven't tried them already, I couldn't recommend them enough. My esteemed colleague, Adam Conway, has spent a considerable amount of time with ESP development, and it was incredible to see what he came up with.

Occasionally, my ESP-powered devices would take slightly too long to respond. Sometimes they would be outright disconnected from Home Assistant. The problem with what I experienced was that this wouldn't happen that often. This would cause me to either overlook that one instance until it happened again or shrug it off as a glitch in my homebrew matrix. Wi-Fi was solid, especially after I made sure we positioned our APs well enough to maximize signal strength around the old home with some solid walls.

What I didn't expect to uncover was that many of my ESPHome devices were struggling to maintain a stable connection, especially when multiple people were hammering the Wi-Fi network. Though connectivity can be affected by signal strength, interference, and how individual devices manage Wi-Fi, ESPHome's own firmware and libraries were operating within the constraints of typical Wi-Fi, which simply wasn't the best approach for the busy smart home.

That's when 2026.1.0 came to change the game. This update introduced a more intelligent approach to handling these factors, resulting in a more robust connection.

So, what changed in 2026.1.0?

Making Wi-Fi great again

ESPHome 2026.1.0 was a large update with several important improvements and fixes, but the one that really caught my attention was the improvements to Wi-Fi stability. Prior to it, ESP-based devices I had installed around the home would use the same simple methods to reconnect to the network when it dropped, but this could be hampered by a busy network or interference. This update improved the automatic reconnection mechanism, allows for more efficient channel switching, and makes ESP devices better handle weaker Wi-Fi signals.

If one of our APs rebooted, a device would connect to a distant AP, and should the closer point come back online, it wouldn't switch back. The same goes for power outages, where devices would connect to whichever AP recovered first in an almost race to the bottom. It almost become standard for ESP devices to hop between the worst APs within our home and outside of me rebooting these devices or manually changing everything, it was a slight pain.

Not only did this update make these devices I own and manage better at handling Wi-Fi, but it also ensured they didn't draw more power than was needed, helping to bring down overall smart home draw, even if it was just a tiny amount. The compounding effect sees this take place with most ESP devices that were previously struggling. For battery-powered hardware, this was especially important so as not to drain the connected power source too quickly.

ESPHome now handles channel selection more efficiently, with devices allowed to intelligently choose the best one to avoid crowded bands that are more common within busier environments. Even though we don't have neighbors nearby to interfere with signals, we have countless devices within the home that do. From our solar array and battery inverter to multiple mobile devices, it can get really busy on the wireless front.

The best part about these improvements? It's all within ESPHome. No need to mess around with the network.

It was like moving to Zigbee

The improvements were immediate

Just like when I took most of my smart home products off Wi-Fi and onto Zigbee wherever possible, anything controlled by ESP devices was much more responsive with this change from ESPHome. Sensors were more useful with immediate notifications for not only Home Assistant and other services, but also our mobile devices. What good is an ESP-based sensor if it wasn't firing off immediately? It's a huge win as ESP is fantastic for keeping off the cloud and staying local.

But, even more interesting, it wasn't just these few smart devices that suddenly became more responsive. I noticed other hardware also started to feel more polished. These are the updates that I love most from community projects like ESPHome. It's easily one of the most flexible tools for smart home enthusiasts ,and once you're ready to make the jump to ESP boards, this is the way to go. It has been a game-changer for my own home.