Clausius classic HC 1-10
The Clausius classic HC 1-10 is a heat pump with SCOP (35 °C) 5.75 and refrigerant R410A.1,2
Key figures
Rules in the UK
Boiler Upgrade Scheme
Check conditions£7,500 – £9,0003Fixed grant (England & Wales)
Fixed grant in England and Wales, deducted from your installer’s quote. £9,000 when replacing oil or LPG off the gas grid (until March 2027). Scotland: Home Energy Scotland grant instead.4,5
- Must be MCS-certified (product and installer). Check the Ofgem product eligibility list.
- Rated output 10 kW; the scheme covers systems up to 45 kW.
- SCOP at 55 °C: 5.1. The installed system needs a SCOP of at least 2.8 (MCS calculation).
Technical specifications
| General | |
|---|---|
| Type (source) | Ground source1 |
| Performance | |
| Rated output 35 °C | 10 kW2 |
| Rated output 55 °C | 10 kW2 |
| Efficiency | |
| SCOP (35 °C) | 5.752 |
| SCOP (55 °C) | 5.12 |
| Seasonal efficiency ηs 35 °C | 227 %2 |
| Seasonal efficiency ηs 55 °C | 201 %2 |
| Energy label 35 °C | A+++2 |
| Energy label 55 °C | A+++2 |
| Noise | |
| Indoor unit sound power | 40 dB(A)2 |
| Refrigerant | |
| Refrigerant | R410A1 |
| Refrigerant GWP | 2,0881 |
| Grants & market | |
| ISDE grant (NL) | 4,425 €1 |
How it ranks
SCOP (35 °C): better than 89% of comparable models in our database (Heat pumps · Ground source · 10–14 kW; n = 46).
Rank 6 of 47
Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.
Manufacturer documentation
External links to Clausius's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.
Similar models
Other brands, same type and a comparable size.
More from Clausius
- Clausius classic HC 3-15 SCOP (35 °C): 5.3
- Clausius Elite P H 1-8 SCOP (35 °C): 5.23
- Clausius Elite P H 3-15 SCOP (35 °C): 5.23
- Clausius classic HC 5-25 SCOP (35 °C): 5.55
- Clausius Elite P H 5-25 SCOP (35 °C): 5.23
- Clausius Strong P H 7-35 SCOP (35 °C): 5.58
Guides on heat pumps
- SCOP, COP and ηs: what a heat pump’s efficiency figures mean
- Hybrid or full heat pump? The main types compared
- Heat pump noise: MCS 020(a), permitted development and where to put the unit
- Sizing a heat pump: heat loss, flow temperature and rated output
- Heat pump refrigerants: R290, R32 and R410A compared
How we collect and check this data →
Frequently asked questions
Sources
- ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 25 Oct 2026
- European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 1 Nov 2026
- Boiler Upgrade Scheme: what you can get — GOV.UK · accessed 27 Sept 2026
- Boiler Upgrade Scheme: guidance for installers (V5) — Ofgem · accessed 27 Sept 2026
- Boiler Upgrade Scheme product eligibility — Ofgem · accessed 27 Sept 2026