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 Consumer Unit – 40A C Curve Type A RCBO, IP65 (WPEPME08/C40)
£88.40
The WPEPME08/C40 is an IP65-rated PME consumer unit pre-fitted with a 40A C Curve Type A RCBO and integrated PME fault detection relays. It eliminates the need for an earth rod in EV charger installations by safely isolating all conductors — live, neutral, and earth...
Heat Pump RCD -B Type 2 Pole - WHP240-030
£136.30
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 8 Way (WME08/HP40C)
£174.50
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WME08/HP40C Heat Pump Consumer Unit is a dedicated protection board for inverter-driven heat pump systems. It comes pre-fitted with a 40A Type B RCD, a 40A Type...
PME Consumer Unit – 40A MCB + SPD, IP65 (WPKPME08/SP)
£106.75
The WPKPME08/SP is a weatherproof PME consumer unit pre-fitted with a 40A MCB, integrated PME fault detection relays, and a Type 2 Surge Protection Device (SPD). It delivers full PEN fault isolation and surge protection in one compact IP65 enclosure, removing the need for an...
PME Consumer Unit – 40A MCB, IP65 (WPKPME08/C40)
£88.40
The WPKPME08/C40 is an IP65-rated PME consumer unit pre-fitted with a 40A MCB and integrated PME fault detection relays. It removes the need for an earth rod in EV charger installations by isolating live, neutral, and earth conductors if a PME or PEN fault is...
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.