Heat Pump Consumer Units – SPD & RCD Compliant
Our heat pump consumer units are designed specifically for air source, ground source, and hybrid renewable installs. Unlike a standard domestic board, these units are pre-configured with the protections required for inverter-driven loads: Type A or B RCDs, RCBO capacity, and integrated surge protection (SPD). That means compliance with the 18th Edition Amendment 2 – and less time wiring on site.
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Whether you’re fitting a single air source unit or building a full renewable system with three-phase distribution, solar PV protection, PME fault monitoring, and EV charging, our boards provide a safe and futureproof supply. Choose IP-rated enclosures for outdoor mounting or PME-compatible variants where an earth rod is impractical.
- Heat pump ready – built for higher start-up current and inverter noise
- Fully compliant – SPD + RCD/RCBO protection for safe installs
- Pre-wired & tested – faster installation and reduced labour costs
- PME and renewables compatible – ideal for future system upgrades
Need RCDs with DC fault protection? Explore our Type B RCD range. For delivery details, see our shipping info or returns policy.
PME 12 Way Consumer Unit with Load Balancing & kWh Meter
£167.12
Suitable for Solar & EV installations, the PME / PEN Fault Detection Consumer Unit with Load Balancing is a built-to-order, 12-module metal board that protects against PME faults, PEN loss, voltage fluctuations, and overloads - while actively managing power demand. Designed for EV chargers without...
PME Fault Detection IP65 Plastic Consumer Unit with Surge Protection/MCB/RCBO variants
£75.00
This PME Loss Consumer Unit provides full fault isolation and surge protection for EV charging setups without the need for an earth rod. Designed to comply with the latest 18th Edition Amendment 2 requirements, the unit automatically monitors supply voltage and disconnects all conductors if...
Heat Pump RCD -B Type 2 Pole - WHP240-030
£125.00
The WHP240-030 is a compact Type B RCD specifically designed for heat pump systems – including Vaillant and other inverter-driven installs where full DC fault protection is required. Unlike Type A or Type AC RCDs, this 2 pole device is engineered to detect smooth DC...
Heat Pump Consumer Unit - WME**/HP40C
£147.80
The WME-HP40C Heat Pump Consumer Unit is a dedicated protection board designed specifically for inverter-driven heat pump circuits. Supplied pre-configured with a 40A Type B RCD, a 40A Type C MCB, and a 2-pole Type 2 SPD, it offers full compliance with BS7671 18th Edition...
Why Do Heat Pumps Need Special Consumer Units?
Heat pumps draw higher inrush currents and generate harmonic “noise” from their inverters. A dedicated consumer unit ensures safe operation and protects both the system and the property’s wider electrical installation.
Key Protections Explained
- Surge Protection (SPD) – defends the heat pump inverter and control boards against transient overvoltage. Popular option: Heat Pump Consumer Unit WME-HP40C.
- Type A or B RCDs – Type B devices provide DC fault protection, recommended for inverter-driven systems. See our Heat Pump Type B RCD (WHP240-030).
- RCBOs – allow individual circuit protection, preventing one fault from taking out the whole supply. Explore our full RCBO range.
- IP-rated enclosures – protect against moisture and dust where heat pumps are mounted outdoors.
Compliant with 18th Edition Wiring Regs
All of our boards are BS EN 61439-3 certified and built for Amendment 2 of the 18th Edition. This ensures every install meets the latest UK wiring safety standards – giving confidence to both installers and homeowners.
Applications
These units are suitable for:
- Air Source Heat Pumps – the most common retrofit option in UK homes
- Ground Source Heat Pumps – systems with higher current demand
- Hybrid installs – where heat pumps are paired with solar PV surge protection, three-phase boards, or EV charging
- Light commercial properties – offices, retail, or small industrial units using renewable heating
FAQs on Heat Pump Consumer Units
Do I need a separate consumer unit for a heat pump?
Yes – most installers recommend or require a dedicated board to meet regs and handle the electrical characteristics of heat pumps.
Should I use a Type A or Type B RCD?
Type A is the minimum standard, but Type B RCDs are strongly advised for heat pumps due to potential DC fault currents.
Can I connect solar and EV charging to the same board?
Yes – many of our heat pump boards are designed with additional ways for renewable system expansion.
Trusted UK Supply
All units are UK-stocked, backed by manufacturer warranties, and available with free next-day delivery on orders over £30. If you need to return an item, see our returns policy. For tailored advice, contact our technical team.