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Generic thermostat water heater (60C)

Thermostats · Climate

Partly worksApple Home issues

1 report: 1 says it partly works.

Reported on r/homeassistant with generic_thermostat.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
generic_thermostatPartly worksPartly in Home
Max temperature capped by HomeKit spec limits
HomeKit limits set to spec; upper bound later raised to 200
Saved copy
The problem With the changes in 0.109.0b0 it looks like a max temp of 38C has been hard coded to the HomeKit side of things, while that seems reasonable/sane, unfortunately it has broken my control of a climate entity for me which can go up to 60C. My climate entity is physically a water heater created in Home Assistant as a generic thermostat (you can't create generic/template water heaters... so yeah) ## Environment - Home Assistant Core release with the issue: 0.109.0b0 - Last working Home Assistant Core release (if known): 0.108.x - Operating environment (Home …

Excerpt saved from GitHub on 2026-10-23.

Issue #34603 · 2020-04

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandHome Assistant
CategoryThermostats