EPH C4 Thermostat Installation for Essex & Suffolk Homeowners

The EPH CP4 Room Thermostat is a wired or wireless digital thermostat designed for precise
temperature control in domestic and light-commercial systems. It keeps rooms comfortable while helping reduce
energy use, thanks to accurate sensing and simple controls.

Key Features

• ✅ User-Friendly Digital Display – Clear LCD for quick reading and adjustments.
• ✅ Precise Temperature Control – Accurate sensing keeps rooms consistently comfortable.
• ✅ Wired or Wireless – Choose the version that suits your property.
• ✅ Adjustable Temperature Range – Set your preferred comfort level.
• ✅ Energy Efficient – Helps prevent unnecessary boiler firing.
• ✅ Broad Compatibility – Works with boilers, underfloor heating, and other heating controls.
• ✅ Simple Installation – Designed to integrate smoothly with existing systems.

Make It Smart (Optional Upgrades)

EPH Gateway (Add-On) – Pair with the CP4 to enable Ember app control: adjust temperatures, schedules, and view status from your phone.

CP4-HW-OT Hot-Water Control (Add-On) – Add this module to enable smart domestic hot-water scheduling and control in the Ember app. Ideal if you want the app to handle both heating and hot water in one place.

• App-based on/off and time programs for the cylinder/hot water
• Works alongside your EPH Gateway/Ember setup
• Clean “one-pack” presentation: Thermostat + Receiver + CP4-HW-OT (optional)

Tip: Choose “Thermostat + Gateway + CP4-HW-OT” for full smart heating + hot water control in the Ember app.

Why Choose the EPH CP4?

• ✔️ Reliable & Consistent – Accurate regulation for stable comfort.
• ✔️ Easy to Use – Clear screen and intuitive buttons.
• ✔️ Cost-Effective – Optimises energy use to help lower bills.
• ✔️ Scalable – Start simple; add Gateway and CP4-HW-OT later for smart control.

What’s Included

• CP4 Thermostat (choose Wired or Wireless)
• Receiver (included with wireless version)
• Documentation & fixings
• ➕ Optional add-ons: EPH Gateway, CP4-HW-OT hot-water module

Installation & Service Area

Gamma Heating installs across East Anglia only.
For standard installation criteria please see our

Terms & Conditions
.