Gas Boiler Integrated with SUNAMP Thermal Battery for Efficient On-Demand Hot Water

Project: New build in East Yorkshire

We installed an Ideal gas boiler with a SUNAMP hot water system for our customer, delivering efficient heating and on-demand hot water storage through advanced thermal battery technology.

What is a SUNAMP?

A SUNAMP is a thermal energy storage system that stores heat for domestic or commercial hot water and/or space heating. Instead of using traditional water tanks, it uses phase change materials (PCMs) to store energy.

How a SUNAMP Works

1. Energy Input (Charging)

SUNAMP units can be charged using:

• Electricity (e.g., off-peak, solar PV, grid)

• Heat from a boiler or heat pump

• Renewable sources (e.g., wind or solar thermal)

This energy heats a Phase Change Material (PCM) inside the unit.

2. Phase Change Material (PCM)

• The PCM melts when it absorbs heat, storing a large amount of energy.

• The PCM used is often salt-based and changes phase at around 58–65°C, making it ideal for domestic hot water.

• This works similarly to how ice absorbs heat when it melts — but at a higher temperature and with much higher energy density.