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Heat pumps · UK

TCL THF-6D/HBpO-A+SMKLd-6D/3HBp-A

The TCL THF-6D/HBpO-A+SMKLd-6D/3HBp-A is an air-to-water heat pump with a SCOP of 4.67 (35 °C) and a sound power level of 59 dB(A). Under permitted development the limit is 37 dB(A) measured 1 m in front of the centre of a neighbour’s habitable-room door or window. Free-standing, the indicative minimum distance is 5.0 m; against a wall 7.1 m.1,2

Last updated: Technical specificationsRules in the UK⇄ Compare this model
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SCOP (35 °C)
4.672

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.

Heating capacity (A7/W35)
6.22kW1
Official source
Outdoor unit sound power
59dB(A)2
Official source
Refrigerant
R321
Official source
Type (source)
Air-to-water1
Official source
UK

Rules in the UK

Minimum distance to your neighbour

MCS 020(a) (England, permitted development since 29 May 2025)3 · 1 m in front of the centre of a neighbour’s habitable-room door or window

Permitted development (MCS 020(a))≤ 37 dB(A) · LAeq,5min
Free-standing5 m
Against wall7.1 m
In corner10 m

Indicative calculation (hemispherical, no barriers). Not a substitute for an MCS 020 assessment.

Boiler Upgrade Scheme

Check conditions

£7,500 – £9,0004Fixed 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.5,6

  • Must be MCS-certified (product and installer). Check the Ofgem product eligibility list.
  • Rated output 7 kW; the scheme covers systems up to 45 kW.
  • SCOP at 55 °C: 3.5. The installed system needs a SCOP of at least 2.8 (MCS calculation).
Heat pump grants in the UK explained →

Technical specifications

General
Type (source)Air-to-water1
Performance
Heating capacity (A7/W35)6.22 kW1
Rated output 35 °C7 kW2
Rated output 55 °C6 kW2
Min. outdoor temperature-22 °C1
Efficiency
SCOP (35 °C)4.672
SCOP (55 °C)3.52
Seasonal efficiency ηs 35 °C184 %2
Seasonal efficiency ηs 55 °C137 %2
Energy label 35 °CA+++2
Energy label 55 °CA++2
COP A7/W354.91
Noise
Outdoor unit sound power59 dB(A)2
Indoor unit sound power38 dB(A)2
Refrigerant
RefrigerantR321
Refrigerant GWP6751
Refrigerant charge1.3 kg1

How it ranks

SCOP (35 °C): better than 47% of comparable models in our database (Heat pumps · Air-to-water · 6–8 kW; n = 182).

Rank 96 of 183

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.

Similar models

Other brands, same type and a comparable size.

More from TCL

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Guides on heat pumps

How we collect and check this data →

Frequently asked questions

Can I install the TCL THF-6D/HBpO-A+SMKLd-6D/3HBp-A without planning permission?

Under MCS 020(a) (England, permitted development since 29 May 2025) the unit must not exceed 37 dB(A) 1 m in front of the centre of a neighbour’s habitable-room door or window. With a sound power of 59 dB(A) that indicatively means 5.0 m free-standing, 7.1 m against a wall or 10.0 m in a corner. Your MCS installer must confirm this.1,2

How much Boiler Upgrade Scheme grant can you get for the TCL THF-6D/HBpO-A+SMKLd-6D/3HBp-A?

£7,500 in England and Wales, provided the product and installer are MCS-certified (£9,000 when replacing oil or LPG off the gas grid, until March 2027). The installer applies and deducts the grant from your quote.1,2

Which refrigerant does the TCL THF-6D/HBpO-A+SMKLd-6D/3HBp-A use?

The TCL THF-6D/HBpO-A+SMKLd-6D/3HBp-A uses R32.1,2

Sources

  1. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
  2. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 18 Oct 2026
  3. MCS 020(a) (England, permitted development since 29 May 2025)
  4. Boiler Upgrade Scheme: what you can get — GOV.UK · accessed 27 Sept 2026
  5. Boiler Upgrade Scheme: guidance for installers (V5) — Ofgem · accessed 27 Sept 2026
  6. Boiler Upgrade Scheme product eligibility — Ofgem · accessed 27 Sept 2026