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LG ThermaV R32 9kW

Heat Pumps

LG ThermaV R32 9kW

Strong value proposition — competitive SCOP with one of the more aggressive installed prices. Good smart integration via LG ThinQ.

8.0
Great

~£12,500 installed (after £7,500 BUS grant: ~£5,000)

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How it scores

Efficiency (SCOP)(35%)
8.5/10
Noise level(15%)
8.0/10
Install simplicity(15%)
7.0/10
Warranty(15%)
6.0/10
Value(20%)
9.5/10

Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.

Specifications

SCOP
4.55
Type
air-source
Noise level
49
Heat output
9
Refrigerant
R32
Warranty
5
BUS grant eligible
Yes

What I noticed

The LG ThermaV is notable for offering genuine mid-range efficiency at what is typically a lower installed price than European brands. LG's ThinQ app provides solid smart controls and real-time monitoring — more polished than some competitors in this segment.

Who it suits

Buyers looking for the best efficiency-per-pound who are comfortable with a Korean brand rather than a European one. LG has a growing UK installer base and solid parts availability through electrical wholesalers.

Watch for

5-year warranty is shorter than some competitors. Installer familiarity is lower than Mitsubishi or Worcester Bosch — ask your installer how many LG units they've commissioned.

Sources — verified 4 June 2026

  1. LG Electronics, “R32 Monobloc S, 1Ø, 9kW — HM091MR U44” — lg.com

ThermaV R32 9kW head-to-heads

Side-by-side scoring vs each alternative in our shortlist.

vs

Daikin Altherma 3 R 8kW

Compare specs, scores, and verdict.

vs

Bosch Compress 7000i AW 8kW

Compare specs, scores, and verdict.

vs

Worcester Bosch Compress 7000i AW 8kW

Compare specs, scores, and verdict.

Other Heat Pumps on my shortlist

Daikin Altherma 3 R 8kW
7.9

Daikin Altherma 3 R 8kW

Compact monobloc design with integrated controls. One of the tidier-looking units on the market, with a well-regarded app and strong SCOP.

~£14,200 installed (after £7,500 BUS grant: ~£6,700)

Bosch Compress 7000i AW 8kW
7.6

Bosch Compress 7000i AW 8kW

Solid mid-market option with a familiar brand and competitive pricing. Good SCOP and a straightforward install profile.

~£13,000 installed (after £7,500 BUS grant: ~£5,500)

Worcester Bosch Compress 7000i AW 8kW
8.1

Worcester Bosch Compress 7000i AW 8kW

Worcester Bosch air-source heat pump with R290 refrigerant. Familiar brand to UK homeowners, large installer network, and a competitive 7-year warranty.

~£13,800 installed (after £7,500 BUS grant: ~£6,300)

Read next

Background reading and decision-tree pages that put this product in context.

Warm Homes Plan & the £7,500 BUS grant

Eligibility, the application route, and how the grant fits a heat-pump quote.

Stage 2: What could you actually save?

How a heat pump shifts the gas-vs-electric cost balance with solar.

Solar panel cost UK 2026

How solar pairs with a heat pump to lower the running-cost gap vs gas.