CIBSE Patron
Proud member of the CIBSE Patron network.
Intelligent Hot Water. Scaled for Commercial.
Our patented technology reduces costs, lowers carbon, and helps businesses hit their sustainability goals.
Scalable smart hot water systems
Patented top-down heating
Precision-level sensing
Usable hot water within 35 minutes
Best in class Demand Side Response (DSR) capability
Commercial design
Partnering with Twenty One Engineering
Full specifications
Download our brochure for full commercial specifications
Engineering efficiency into Exchange Square
In the heart of one of London’s most ambitious commercial developments, a forward-thinking collaboration between Twenty One Engineering, and Mixergy has delivered a pioneering hot water generation system, focusing on a heat recovery solution at Exchange Square.
Savings for every commercial setting
Mixergy is reducing hot water energy use across commercial buildings, from leisure and hospitality to offices and stadia.
Office blocks
100% Gas Removal
Payback in under a year
600 kWh/week saved
Achieved a Coefficient of Performance (COP) > 5.0
Stadia
25% Energy Saving
£328,475/year saved
296 tons of C0₂ cut
Hotels
Optimised solar PV
Matching heating to real demand
Cutting energy use without impacting guests
This isn’t just about replacing cylinders. It’s about rethinking where energy comes from, how we use it, and what that means for commercial electrification. This is how the path to net zero begins.
Phil Draper, Managing Director, 21 Engineering
