The basics in plain English
Electricity in, heat out.
An electric boiler is much simpler than a gas one. No combustion, no flame, no flue, just a resistive heating element and either a flow-through path or a thermal store. Here's how the two main types differ.
Electricity in, heat out
- Mains electricity in
- High-resistance heating element
- Flow-through path or thermal store
- Heat out to your existing radiators
Three stages
From the mains to your radiators.
Electricity in
Direct heating
Electricity passes through a high-resistance element, converting almost 100% of energy into heat.
Heat transferred
Into the water loop
The element heats water that flows around your existing radiator circuit, exactly as a gas boiler would.
Smart variant
Stored for later
The Tepeo ZEB stores energy in a thermal battery. The Luthmore heats on demand. Both deliver heat to your radiators identically.
What this means
No combustion changes everything.
- 100% efficient: every kWh in becomes heat
- No flue, no combustion, no carbon monoxide
- No annual gas safety check or service
- Silent: no firing cycles, no boom kettle moments
100%
Every kWh becomes heat
Zero
Combustion or carbon monoxide
None
Annual gas safety checks
Silent
No firing cycles