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    AI Overview
    What is OpenTherm and How is it Important for Managing ...
    OpenTherm thermostats are produced by various manufacturers that adhere to the independent, modulating communication standard designed for energy-efficient heating. Leading brands include Honeywell (Resideo), Danfoss, E-Top Controls, Nest, Tado, and Viessmann. These devices enable direct, two-way communication with compatible boilers to modulate heat output. 
    Key OpenTherm Thermostat Manufacturers & Brands 
    • Honeywell Home / Resideo: Offers multiple OpenTherm-compatible models, including the T8720A1005 (Round Modulation) and newer wired/wireless smart models.
    • E-TOP Controls: A professional manufacturer specializing in OEM/ODM OpenTherm wireless boiler controls, smart Wi-Fi thermostats, and non-programmable options.
    • Danfoss: Produces modulating room thermostats like the ORT-01, featuring a 2-wire setup and LED indicators.
    • Viessmann: Provides the Vitotrol 1000 and other Vitotrol models that support the OpenTherm protocol.
    • EPH Controls: Manufactures OpenTherm-compatible, battery-operated, and wireless programmable thermostats (e.g., CP4B, CP4V2).
    • Intergas: Offers the Comfort Touch thermostat specifically designed for their boiler systems.
    • Tado & Nest: Smart thermostat manufacturers that provide OpenTherm compatibility for increased efficiency. 
    Key Considerations 
    • Compatibility: While OpenTherm is a standard, some manufacturers may include unique features that limit interoperability. It is advised to check the compatibility list, specifically for modulating control.
    • Functionality: OpenTherm allows the thermostat to tell the boiler how much heat is needed, rather than just switching it on or off, resulting in higher efficiency. 
    For a complete list of members implementing the protocol, check the Opentherm Association's list of members. 
    • High quality opentherm thermostat ... - E-TOP Controls
      E-Top as professional thermostat manufacturer, we have both wireless thermostats for gas boiler controls. For wireless thermosta...
      E-TOP Controls
    • Opentherm Boilers & Controls | Compatibility Guide
      Apr 18, 2020 — Which products use Opentherm? 'Opentherm' is a common language developed by Honeywell that can be adopted by any boiler or heating...
      The Heating Hub
    • Members - Opentherm Association
      Jul 29, 2024 — The majority of current members are directly responsible for implementing the OpenTherm protocol; i.e. the manufacturers of contro...
      Opentherm Association
    Show all
    • High quality opentherm thermostat ... - E-TOP Controls
      E-Top as professional thermostat manufacturer, we have both wireless thermostats for gas boiler controls. For wireless thermosta...
      E-TOP Controls
    • Opentherm Boilers & Controls | Compatibility Guide
      Apr 18, 2020 — Which products use Opentherm? 'Opentherm' is a common language developed by Honeywell that can be adopted by any boiler or heating...
      The Heating Hub
    • Members - Opentherm Association
      Jul 29, 2024 — The majority of current members are directly responsible for implementing the OpenTherm protocol; i.e. the manufacturers of contro...
      Opentherm Association
    • Opentherm Wireless Boiler Control Thermostat
      Contact us. Adress:No.6 of Tong'an Industrial Park, Meixi Rd,Tong'an District, Xiamen China 361100.
      Xiamen E-Top Controls Technology Co., Ltd.
    • OpenTherm Thermostats - Pirate Heating Supplies
      Viessmann Vitotrol 100 Wired OpenTherm Thermostat (7511618) £247.20. £23.99. £206.00 Original price was: £206.00. £19.99 Current p...
      Pirate Heating Supplies
    • OpenTherm: Revolutionizing Heating Control with Seamless ...
      Dec 12, 2022 — OpenTherm streamlines the installation, operation, and maintenance of heating systems, promoting energy efficiency and intelligent...
      LHS Plumbing Services
    • Honeywell Home DT4M Grey OpenTherm Wired Room Thermostat
      Honeywell Home DT4M Grey OpenTherm Wired Room Thermostat version supports OpenTherm® appliances.
      Mr Central Heating
    • OpenTherm Boilers and Controls - Hub.ARated.com
      Sep 26, 2022 — As a standard, OpenTherm is independent of any single manufacturer. A controller from manufacturer A can in principle be used to c...
      hub.arated.com
    • Go to product viewer dialog for this item.
      Honeywell T87g2014-e Round On/off Thermostat Opentherm Central Heating
      T87EU - wired is a range of modern digital wired room thermostats available in On/Off and modulating versions. The versions includ...
      Google
    • Go to product viewer dialog for this item.
      Danfoss ORT-01 OpenTherm Modulating Room Thermostat LED Indicator 087n774300
      Improve the energy efficiency of your home with the Danfoss OpenTherm Room Thermostat. This square-shaped thermostat is easy to in...
      Google
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    High quality opentherm thermostat ...


    E-TOP Controls
    https://www.etopcontrols.com › opentherm-thermostat_...
    E-TOP Controls
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    Apr 18, 2020 — These boilers are compatible with many mainstream smart and standard heating controls, including Nest, Tado and Honeywell.Read more

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    High quality opentherm wifi thermostat ...


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    OpenTherm is a non-manufacturer-dependent system of communication between modulating HVAC heating appliances and room thermostats.

    OpenTherm Boilers and Controls - Hub.ARated.com


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    OpenTherm was originally created by Honeywell and was sold to the OpenTherm Association on November 1996 for one British Pound. This was no doubt to make the ...Read more
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    Honeywell Home DT4M Grey OpenTherm Wired Room Thermostat version supports OpenTherm® appliances.

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    Google Nest Thermostat is dead They want you to switch! #shorts

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    "...But the Vivven Smart Thermostat you'll stay comfort connected and enjoy Basically. If it's not broke. We're going to break...."
    From 0:11
    Part of a video titled Google Nest Thermostat is dead They want you to switch! #shorts - YouTube
    But the Vivven Smart Thermostat you'll stay comfort connected and enjoy Basically. If it's not brokeMoreBut the Vivven Smart Thermostat you'll stay comfort connected and enjoy Basically. If it's not broke. We're going to break.

    Google Nest Thermostat is dead They want you to switch! #shorts - YouTube


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    What is the most reliable thermostat brand?
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    Most Trusted Thermostat | Honeywell Home - Resideo


    Resideo
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    Does Viessmann support OpenTherm?
    Here's what I know so far: • The Viessmann 050-W supports both OpenTherm and its proprietary eBUS protocol. Tado uses OpenTherm, so it can control the boiler for load modulation and energy efficiency.Jan 6, 2025

    Hi everyone, I'm considering pairing a Viessmann Vitodens 050-W 30kW ...


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