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EHS Primus 12000S 12KW Electric System Boiler
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£1,330.00
(Inc. VAT)
inc. VAT
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The EHS Primus 12000S is a 12kW single phase electric system boiler designed to replace a gas system boiler, providing central heating via existing radiators or underfloor heating without altering the pipework.
When used with an unvented indirect cylinder, it also delivers mains‑pressure hot water, with the option to heat the store on off‑peak electricity for lower running costs.
Key Features
- 12 kW single phase output for small to medium domestic properties using a wet central heating or UFH system.
- Integrated pump and expansion vessel for a compact, self‑contained system boiler package.
- Pre‑wired chassis to simplify installation and reduce onsite wiring time for installers.
- No flue or gas supply required, eliminating combustion risks and flue routing constraints.
- Touch‑screen user interface providing clear temperature and mode control at the boiler.
How It Fits Your System
- Connects to existing radiator or underfloor heating circuits in place of a gas system boiler, using the same flow and return pipework.
- Designed to work with an unvented indirect cylinder to provide domestic hot water for multi‑bathroom homes.
- Can be paired with external timers or smart stats to heat the cylinder during cheaper night‑rate or off‑peak periods.
Technical Specification
| Brand | Primus |
| Manufacturer | Electric Heating Supplies (EHS) |
| Model | Primus 12000S Electric System Boiler |
| Product Type | Electric system boiler (wet central heating) |
| Nominal Output | 12 kW single phase |
| Supply | 230 V AC, single phase |
| Heating Application | Radiator and underfloor heating systems via sealed primary circuit |
| Hot Water | Requires separate unvented indirect cylinder (not included) |
| Integrated Components | Circulating pump and expansion vessel built into the boiler casing |
| Controls | Front‑mounted touch‑screen control panel, compatible with external RF / Wi‑Fi stats |
| Servicing | No mandatory annual service requirement (refer to EHS warranty terms) |
| Warranty | 5 years (subject to manufacturer's T&Cs) |
| Height | 630 mm |
| Width | 380 mm |
| Depth | 230 mm |
- Type Electric Boilers
- Vendor EHS
- SKU ALS1-1PSY-12
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