--- title: ESPHome 2026.2.0: Faster builds, leaner runtime | daily.dev description: ESPHome 2026.2.0 delivers major performance gains: ESP32 Arduino builds compile 36% faster with 44% less flash and 50% less static RAM, ESP-IDF compiles are... canonical: https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ESPHome 2026.2.0: Faster builds, leaner runtime | daily.dev og:description: ESPHome 2026.2.0 delivers major performance gains: ESP32 Arduino builds compile 36% faster with 44% less flash and 50% less static RAM, ESP-IDF compiles are... og:url: https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m og:image: https://api.daily.dev/og/posts/83hyNci5M.png og:image:alt: ESPHome 2026.2.0: Faster builds, leaner runtime og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # ESPHome 2026.2.0: Faster builds, leaner runtime **[ESPHome - Smart Home Made Simple](https://daily.dev/sources/esphome)** · 18 min read · 0 upvotes · 0 comments ## Summary ESPHome 2026.2.0 delivers major performance gains: ESP32 Arduino builds compile 36% faster with 44% less flash and 50% less static RAM, ESP-IDF compiles are ~22% faster, and CPU usage drops significantly across BLE tracking (~85%), MQTT (~6.5%), and the scheduler (25% smaller). ESP8266 devices recover RAM via flash-based string storage. The release adds three new components (DLMS smart meter, CH423 I/O expander, SY6970 battery management), seven new display models, expanded Zigbee support on nRF52, and security hardening including constant-time authentication and cryptographic random generation. Breaking changes require action for users of bmp581 sensors (rename platform to bmp581_i2c), cover automations using on_open (rename to on_opened), and DSMR firmware version sensors (move to text_sensor). Several patch releases (2026.2.1 through 2026.2.4) followed with bug fixes for socket handling, UART sync, and WiFi power settings. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What do I need to change in my ESPHome config after upgrading to 2026.2.0 if I use the bmp581 sensor? Update the platform from bmp581 to bmp581_i2c. The BMP581 pressure sensor component was split into bmp581_base and bmp581_i2c to prepare for future SPI support, so existing configurations referencing the old bmp581 platform name will break unless updated. _daily.dev helps developers track breaking config changes before an ESPHome upgrade bites them._ ### Why did my ESPHome cover automation using on_open stop firing correctly after updating to 2026.2.0? The on_open trigger was renamed to on_opened, with the old name deprecated until version 2026.8.0. Additionally, on_opened and on_closed now only fire on transitions to the fully open or closed state rather than on every state update, so automations relying on repeated firing need adjustment. _Developers tracking cover automation quirks across ESPHome releases can follow updates like this on daily.dev._ ### How much faster are ESP32 builds in ESPHome 2026.2.0 compared to previous versions? ESP32 Arduino builds compile 36% faster and produce 44% less flash usage and 50% less static RAM, while ESP-IDF compiles are roughly 22% faster. These gains come from selective compilation that only builds the Arduino and ESP-IDF parts a given configuration actually uses, requiring zero configuration changes for most users. _Anyone comparing embedded build performance across firmware releases can follow updates like this on daily.dev._ ## Similar posts on daily.dev - [ESPHome 2026.9.0: Faster builds and encrypted updates](https://daily.dev/posts/esphome-2026-9-0-faster-builds-and-encrypted-updates-qd7a35hwj) · ESPHome - Smart Home Made Simple · 0 upvotes · 0 comments - [ESPHome 2026.8.0: Bluetooth on more chips than ever](https://daily.dev/posts/esphome-2026-8-0-bluetooth-on-more-chips-than-ever-y9nlesjdi) · ESPHome - Smart Home Made Simple · 1 upvotes · 0 comments - [ESPHome turned my junk drawer into a smart home](https://daily.dev/posts/esphome-turned-my-junk-drawer-into-a-smart-home-2haeuvben) · XDA Developers · 3 upvotes · 0 comments - [ESPHome's Device Builder finally lets you compile multiple devices at once, and it changes everything](https://daily.dev/posts/esphome-s-device-builder-finally-lets-you-compile-multiple-devices-at-once-and-it-changes-everythin-igehxdkbo) · XDA Developers · 0 upvotes · 0 comments - [Espressif Systems releases a Linux BSP developer preview for ESP32-S31 RISC-V microprocessor](https://daily.dev/posts/espressif-systems-releases-a-linux-bsp-developer-preview-for-esp32-s31-risc-v-microprocessor-lmglqymci) · CNX Software · 1 upvotes · 0 comments --- Tags: [#iot](https://daily.dev/tags/iot), [#embedded](https://daily.dev/tags/embedded), [#firmware](https://daily.dev/tags/firmware) [View this post on daily.dev](https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"ESPHome 2026.2.0: Faster builds, leaner runtime","url":"https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m"},"datePublished":"2026-08-23T12:18:30.161Z","dateModified":"2026-08-23T12:24:27.543Z","description":"ESPHome 2026.2.0 delivers major performance gains: ESP32 Arduino builds compile 36% faster with 44% less flash and 50% less static RAM, ESP-IDF compiles are...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b1d7d02965c40dbd6e07fa494b1a3ff7?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b1d7d02965c40dbd6e07fa494b1a3ff7?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"ESPHome - Smart Home Made Simple","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ESPHome - Smart Home Made Simple","logo":"https://media.daily.dev/image/upload/s--4zvo2xdp--/f_auto,q_auto/v1787487447/logos/esphome?_a=BAMAMicg0","url":"https://daily.dev/sources/esphome"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"iot,embedded,firmware","timeRequired":"PT18M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ESPHome - Smart Home Made Simple","item":"https://daily.dev/sources/esphome"},{"@type":"ListItem","position":3,"name":"ESPHome 2026.2.0: Faster builds, leaner runtime"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/esphome-2026-2-0-faster-builds-leaner-runtime-83hynci5m#faq","mainEntity":[{"@type":"Question","name":"What do I need to change in my ESPHome config after upgrading to 2026.2.0 if I use the bmp581 sensor?","acceptedAnswer":{"@type":"Answer","text":"Update the platform from bmp581 to bmp581_i2c. 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