Compare specs, explained for the UK.
Heat pump, heat pump water heater, EV charger, battery, air-con and solar inverter data from official sources, plus what applies in the UK: MCS 020 noise limits, grants and smart-charging rules.
Heat pumps
SCOP, noise, refrigerant and grants per model.
EV chargers
Charging power, phases, OCPP and smart charging per model.
Home batteries
Usable capacity, charging power, efficiency and warranty per model.
Air conditioners
SEER, SCOP, indoor and outdoor noise and refrigerant per model.
Solar inverters
AC power, MPP trackers, efficiency and hybrid options per model.
Heat pump water heaters
Water heating efficiency ηwh, load profile, energy class, annual consumption and noise per heat pump water heater.
Guides
All guides →- How to compare the specs of heat pumps, EV chargers and home batteries
Compare specs fairly: official registers before brochures, SCOP at 35 and 55 °C, sound power vs pressure, and usable not nominal battery capacity.
- Glossary: every technical term on VersusIndex explained
From SCOP and COP to MPPT, OCPP and round-trip efficiency: every technical term on VersusIndex explained, with UK notes on MCS, G98/G99 and OZEV.
- Saving energy at home: which device is right for you?
Heat pump, solar panels, home battery or EV charger: what to do first and how to combine them. With UK rules on the SEG, 0% VAT, BUS and smart charging.
- Our sources and methodology
Where our specs come from – OZEV, ENA, EPREL, Heat Pump Keymark, BAFA and more – what each register guarantees and how we check makers' data nightly.
- Choosing a home EV charger: power, tethered or untethered, and the features that matter
How to choose a home EV charger in the UK: why 7 kW suits most single-phase homes, tethered vs socket, smart rules and the OZEV list – data on 67 models.
- Heat pump water heater or heat pump: what is the difference and when do you choose which?
A heat pump water heater heats tap water only, a heat pump heats the whole home. How label, efficiency and size differ, and when each one fits.
Traceable data
Every value shows its source and date. Official databases take priority over manufacturer claims.
Rules per country
Same heat pump, different rules. We work out the noise distance and grant eligibility for the UK.
Readable by people and machines
Every page carries structured data (Schema.org) and numbered source citations, so search engines and AI assistants can check where each figure comes from.