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Heat pumps · UK

TCL THMLd-12S/9FBp-A

TCL THMLd-12S/9FBp-A
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The TCL THMLd-12S/9FBp-A is an air-to-water heat pump with a SCOP of 4.78 (35 °C) and a sound power level of 64 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 8.9 m; against a wall 12.6 m.1,2,3

Last updated: Technical specificationsRules in the UK⇄ Compare this model
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SCOP (35 °C)
4.783

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

Heating capacity (A7/W35)
12kW2
Official source
Outdoor unit sound power
64dB(A)3
Official source
Refrigerant
R2902
Official source
Type (source)
Air-to-water2
Official source
UK

Rules in the UK

Minimum distance to your neighbour

MCS 020(a) (England, permitted development since 29 May 2025)4 · 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-standing8.9 m
Against wall12.6 m
In corner17.9 m

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

Boiler Upgrade Scheme

Check conditions

£7,500 – £9,0005Fixed 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.6,7

  • Must be MCS-certified (product and installer). Check the Ofgem product eligibility list.
  • Rated output 12 kW; the scheme covers systems up to 45 kW.
  • SCOP at 55 °C: 3.83. 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-water2
Performance
Heating capacity (A7/W35)12 kW2
Rated output 35 °C12 kW3
Rated output 55 °C12 kW3
Min. outdoor temperature-22 °C2
Efficiency
SCOP (35 °C)4.783
SCOP (55 °C)3.833
Seasonal efficiency ηs 35 °C188 %3
Seasonal efficiency ηs 55 °C150 %3
Energy label 35 °CA+++3
Energy label 55 °CA++3
COP A7/W354.82
Noise
Outdoor unit sound power64 dB(A)3
Refrigerant
RefrigerantR2902
Refrigerant GWP32
Refrigerant charge1.25 kg2
Grants & market
ISDE grant (NL)3,700 €1

How it ranks

SCOP (35 °C): better than 49% of comparable models in our database (Heat pumps · Air-to-water · 10–14 kW; n = 308).

Rank 151 of 309

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

All TCL models (30) →

Guides on heat pumps

How we collect and check this data →

Frequently asked questions

Can I install the TCL THMLd-12S/9FBp-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 64 dB(A) that indicatively means 8.9 m free-standing, 12.6 m against a wall or 17.9 m in a corner. Your MCS installer must confirm this.1,2,3

How much Boiler Upgrade Scheme grant can you get for the TCL THMLd-12S/9FBp-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.1,2,3

Which refrigerant does the TCL THMLd-12S/9FBp-A use?

The TCL THMLd-12S/9FBp-A uses R290.1,2,3

Sources

  1. ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 25 Oct 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
  3. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
  4. MCS 020(a) (England, permitted development since 29 May 2025)
  5. Boiler Upgrade Scheme: what you can get — GOV.UK · accessed 27 Sept 2026
  6. Boiler Upgrade Scheme: guidance for installers (V5) — Ofgem · accessed 27 Sept 2026
  7. Boiler Upgrade Scheme product eligibility — Ofgem · accessed 27 Sept 2026