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Mixergy X Indirect 300L Cylinder
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£2,170.00
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Mixergy X Indirect 300L | 300L smart unvented indirect cylinder designed to work with a boiler or heat pump plus electric immersion, using Mixergy’s volumetric heating and app control for faster reheat and lower energy use.
Key Features
- 300 litre smart indirect unvented hot water cylinder for medium to large homes with higher hot water demand.
- Indirect coil for primary heating from a gas, oil or LPG boiler or suitable heat pump, with electric immersion for backup and boosting.
- Mixergy X volumetric top‑down heating technology, only heating the volume of water required to reduce energy consumption and reheat times.
- Smart connectivity via the Mixergy app for monitoring stored hot water, scheduling, boost control and smart/off‑peak tariff optimisation.
- Future‑ready design for integration with low‑carbon sources such as solar PV (via immersion control) and low‑temperature heat pumps.
- Supplied as an unvented package with the key valves, expansion vessel and tundish required for a compliant installation (exact kit may vary by merchant).
Technical Data (Typical 300L Indirect)
| Manufacturer | Mixergy |
| Range | Mixergy X Indirect |
| Model | Mixergy X Indirect 300L Cylinder |
| Nominal Capacity | 300 litres |
| Orientation | Vertical, floor‑standing |
| Primary Heat Source | Indirect coil from boiler or heat pump |
| Secondary Heat Source | Electric immersion heater (3 kW, 230–240 V) |
| Construction | Steel cylinder with high‑performance insulation and integrated smart controls |
| Approx. Height | ≈ 2060–2070 mm |
| Approx. Diameter | ≈ 580–585 mm |
| Standing Heat Loss | Low standing losses thanks to thick insulation and stratified heating |
| ErP Hot Water Rating | Typically C for 300L indirect models (check product label) |
Performance & Smart Control
- Fast partial reheat: volumetric top‑down heating means usable hot water is available much more quickly than with conventional cylinders.
- Full‑volume reheat from cold via the coil typically achieved in well under an hour (exact time dependent on primary source and setup).
- App control for viewing tank fill level (% hot water), setting schedules, boosting and aligning heating times with cheaper or greener electricity.
Typical Unvented Kit (Indirect)
- Inlet control group with pressure‑reducing valve, check valve, strainer and expansion relief.
- Temperature and pressure relief valve and tundish.
- Potable expansion vessel sized for a 300L cylinder, supplied with wall mounting bracket.
- Factory‑fitted sensor and control gear for Mixergy X smart operation.
Model: Mixergy X Indirect 300L Smart Unvented Cylinder
Part code: MX-300-IND-582
Large‑capacity 300L Mixergy X indirect cylinder, ideal where a boiler or heat pump is the main heat source but smart control, faster reheat and future‑ready low‑carbon operation are required.
- Type Boiler Cylinders
- Vendor Mixergy
- SKU MX-300-IND-582
Downloads
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs