
Mixergy X Indirect 120L Cylinder
Mixergy X Indirect 120L Cylinder
The Mixergy X 120 L is a smart unvented hot water cylinder with a nominal capacity of 120 litres, standing at 986 mm tall on a 582 mm diameter, and carrying an ErP class B rating.
What makes a Mixergy different
A conventional cylinder heats all of its water or none of it. Mixergy's patented design heats the tank from the top down and tracks how much hot water is actually in it, so the household can heat a third of a tank when a third is what is needed. Less stored volume held hot means less standing loss, and it is what lets the cylinder respond usefully to a cheap-rate window or a burst of surplus solar generation rather than simply running a fixed immersion schedule.
The app adds scheduling, machine-learned demand prediction and usage insights, and the cylinder is built to work with any heat source — heat pump, solar PV, or a gas or oil boiler.
Specification
| Nominal capacity | 120 litres |
| Energy efficiency class | B |
| Height | 986 mm |
| Diameter | 582 mm |
| Weight empty | 35 kg |
| Weight full | 155 kg |
| Standing loss | 44 W |
| Standing heat loss | 0.68-1.06 kWh/24 h |
| Cylinder material | Duplex stainless steel |
| Insulation | CFC/HCFC-free polyurethane foam, 50 mm |
| Water connections | 22 mm compression |
| Immersion heater | 3 kW |
The lower standing heat loss figure is measured with 25% of the volume heated; the upper figure is the one used for SAP.
Warranty
25 years on the cylinder. Mixergy's terms and conditions apply.
Additional suggested items
Commonly ordered alongside a cylinder on a heat pump installation:
- Ideal Magnetic Filter — captures the magnetite a strainer cannot, protecting the plate heat exchanger
- Intatec Zero Anti-Freeze Valve 28mm — mechanical frost protection for the external pipework, works without power
- Ideal Flexible Hose 500mm — pre-insulated, vibration-absorbing final connection to the unit
The Mixergy X datasheet is in the Documents tab below. See the rest of our cylinders and heat pumps, or contact our sales team at sales@clearraysolar.com.
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Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.

