ESI Controls

ESi Controls is a UK‑based manufacturer of heating and hot water control systems, offering affordable, installer‑friendly solutions designed to lower energy consumption and simplify system management.

About ESi Controls

Founded in 2008 and headquartered in Buckingham, ESi Controls specialises in designing and manufacturing high‑quality heating controls for both domestic and commercial installations.

The company emphasises value, ease of installation and smart system compatibility, helping users and installers reduce bills and improve system performance.

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Product Range & Key Solutions

ESi Controls’ product offering includes:

  • Programmable room thermostats — wired, wireless, WiFi enabled, smart control models supporting boiler, heat pump and hot water applications.
  • Room and cylinder thermostats — pipe‑mounted, strap sensor, dual cylinder units for hot water regulation.
  • Motorised zone valves & actuator packs — 2‑port, 3‑port valves, compatible for zoning systems in central heating. 
  • Channel programmers and control kits — pre‑packaged solutions (S‑Plan, Y‑Plan, wireless RF kits) for heating/hot‑water control. 
  • Accessories, smart hubs & EV charger interface — including WiFi hubs for mobile app control and integration with voice assistants. 

Key Features & Benefits

  • Smart & energy‑saving: Many thermostats support OpenTherm communication and WiFi/app control, enabling better boiler modulation and reduced gas usage. 
  • Installer‑friendly design: Products are designed for quick installation, easy wiring, and compatibility with retrofit and new build systems. 
  • Broad system coverage: From simple room stats to full zone kits across combi, system and heat‑only boilers plus heat pumps.
  • Value orientated: The brand focuses on cost‑effective solutions with good quality, making them suitable for trade, social housing and residential projects.

Why Choose ESi Controls?

Choosing ESi Controls means opting for a brand that balances modern smart‑control capabilities with practical trade‑friendly design. Whether you are specifying a smart thermostat for a heat pump or installing a multi‑zone kit in a residential property, ESi provides flexible, cost‑effective solutions that help reduce energy consumption and simplify installation.

In summary: ESi Controls delivers a comprehensive portfolio of heating and hot water controls — including smart programmable thermostats, zone valve kits, and accessories — backed by UK manufacture, installer focus and growing smart‑home compatibility.