Outstanding SAP performance
iHP X is the top performing heat pump cylinder in SAP today, and it is built to stay ahead as the Home Energy Model becomes the standard.
Model Smart Hot Water with Confidence
Meet SAP and RdSAP compliance with confidence and bring smart hot water into your modelling.
Officially recognised to meet SAP compliance.
Appendix Q recognised
Mixergy cylinders are recognised in Appendix Q, helping you model performance with confidence and support EPC uplift.
Ready for the HEM shift in October 2026
Built for tomorrow, smart hot water is officially included in the Home Energy Model.
Navigate compliance with ease
Smart hot water is one of the simplest ways to improve SAP results today, while staying ready for the Home Energy Model tomorrow. Our trained team will show you exactly what smart hot water changes in your inputs, then guide you through modelling it correctly so your assessments deliver stronger outcomes with confidence.
All workshops receive a 1 hour CPD certificate.
Recognised Mixergy Products
All Mixergy systems feature patented sensor technology with top-down heating, intelligent controls, grid connectivity, and design that lowers compliance costs and bills.
iHP X
All-in-One Heat Pump Cylinder
Mixergy iHP X combines a high-efficiency heat pump and hot water cylinder in one compact unit, removing the need for external components and simplifying specification for space-constrained developments.
Best-in-Class SAP Performance
Recognised as the highest-performing integrated heat pump cylinder in SAP, iHP X delivers outstanding EPC uplift and helps developers meet Future Homes and Home Energy Model requirements with ease.
Modular Head Unit for Easy Installation
The detachable head unit simplifies delivery, installation, and servicing, reducing on-site time and risk for Mu0026amp;E contractors, ideal for multi-plot developments and apartments.
Fastest Hot Water Recovery in Class
With boost mode delivering usable hot water in under 30 minutes, iHP X ensures homeowners enjoy reliable comfort and rapid reheat times, setting a new standard for integrated heat pump performance.
Solar X
Built-In PV Diverter
Solar X comes with an integrated solar diverter, removing the need for third-party components. This simplifies installation, cuts costs, and ensures maximum use of free solar energy for hot water.
Optimised for SAP Compliance
Engineered for SAP 10.2 and the Home Energy Model, Solar X delivers measurable EPC uplift, helping developers achieve compliance targets at lower cost with fewer solar panels required.
Compact, High-Performance Design
Using patented top-down heating, Solar X delivers more usable hot water from a smaller cylinder, reducing space requirements while improving efficiency and recovery times.
Future-Ready and Smart-Controlled
With built-in machine learning and compatibility across gas, electric, and heat pump systems, Solar X supports time-of-use tariffs and renewable integration for long-term energy optimisation.
Mixergy X
Recognised in SAP and the Home Energy Model
Mixergy X is officially listed in SAP and the Home Energy Model, delivering proven EPC uplift and helping developers meet compliance targets with confidence.
Works with Any Heat Source
Designed for flexibility, Mixergy X connects seamlessly to gas, direct electric, or heat pump systems — giving developers one cylinder that adapts to any project specification or future upgrade path.
Compact, High-Performance Design
Patented top-down heating delivers usable hot water up to ten times faster while using up to 40% less energy, reducing system demand and enabling smaller plantroom layouts.
Futureproof and Smart-Controlled
Built with connected intelligence, Mixergy X integrates with smart tariffs, PV systems, heat pumps and future-ready controls to optimise efficiency and lower running costs for homeowners.
Performance Example
Mixergy iHP X
This table compares the top-performing Mixergy iHP X model with the best-performing non-Mixergy models in a like-for-like scenario in SAP.
| SPACE HEATING | COMPARISON |
| Storage Heaters | Mixergy 89B vs 88B |
| Direct Electric | Mixergy 84B vs 83B |
| Air-to-Air Heat Pump | Mixergy 92A vs 91B |
iHP X PCBD Appendix Q Codes
| iHP X Model | Volume (L) | PCBD No |
| IH2 120 | 120 | 108933 |
| IH2 150 | 150 | 108932 |
| IH2 180 | 180 | 108934 |
| IH2 210 | 210 | 108935 |
| IH2 250 | 250 | 108936 |
Book in your modelling workshop
In this free one-hour session, our trained team will walk you through smart hot water and how to model it well. You’ll receive a 1 hour CPD certificate for attendance.
Fill in the form below and we will get in touch to arrange a time that suits you.
