From bbfb929d7ed8166a6fbba40efb591a00666e59c2 Mon Sep 17 00:00:00 2001
From: Steve Reid <wheemer@gmail.com>
Date: Wed, 2 Sep 2026 15:45:00 -0230
Subject: [PATCH] fix: Home Assistant: add state class for formaldehyde
 (#33006)

---
 lib/extension/homeassistant.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/extension/homeassistant.ts b/lib/extension/homeassistant.ts
index 3b45e644d..90d571056 100644
--- a/lib/extension/homeassistant.ts
+++ b/lib/extension/homeassistant.ts
@@ -211,6 +211,7 @@ const NUMERIC_DISCOVERY_LOOKUP: {[s: string]: KeyValue} = {
     external_humidity: {device_class: "humidity", icon: "mdi:water-percent", state_class: "measurement"},
     fading_time: {entity_category: "config", icon: "mdi:timer"},
     formaldehyd: {state_class: "measurement"},
+    formaldehyde: {state_class: "measurement"},
     flow: {device_class: "volume_flow_rate", state_class: "measurement"},
     gas: {device_class: "gas", state_class: "total_increasing", icon: "mdi:meter-gas"},
     gas_density: {icon: "mdi:google-circles-communities", state_class: "measurement"},