LG Therma V Heat Pump Review: R290 Models & UK Performance
LG may be best known for televisions and smartphones, but the South Korean manufacturer has over two decades of HVAC experience and produces their own compressors — one of the world's largest compressor manufacturers. Their Therma V range offers R290 refrigerant technology at a price that undercuts premium European brands like Nibe and Viessmann, making it one of the most affordable routes to future-proof heating.
This review covers the Therma V range for UK homeowners. See our full brand comparison for context.
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LG Therma V Range in the UK
LG offers the R290 Monobloc (5.5–16kW), R32 Split, and an All-in-One solution integrating indoor unit and hot water cylinder. The R290 monobloc with dual-rotary inverter compressor is the standout option. Gold Fin anti-corrosion coating makes it particularly suited to UK weather and coastal properties.
Efficiency and Real-World Performance
Annual running costs of £700–£1,000 place LG alongside Panasonic and Bosch in operational economy.
Smart Controls: LG ThinQ
LG's ThinQ app provides polished remote control, real-time energy monitoring, error notifications, and voice control via Google Assistant and Amazon Alexa. The app benefits from LG's consumer electronics expertise. Pairing with solar panels can maximise self-consumption.
Installation Costs
| Model | Installed Cost | After BUS Grant |
|---|---|---|
| R290 Monobloc (5.5–9kW) | £8,000–£10,500 | £500–£3,000 |
| R290 Monobloc (12–16kW) | £10,000–£13,500 | £2,500–£6,000 |
| All-in-One | £10,000–£14,000 | £2,500–£6,500 |
LG offers one of the more affordable routes to R290 technology, undercutting European brands while offering comparable efficiency. The BUS grant brings costs down to as little as £500.
Pros and Cons
Advantages
- Competitive pricing with R290 technology — affordable future-proofing
- In-house dual-rotary compressors — proven reliability
- Quiet operation — as low as 35dB
- Polished ThinQ smart controls with voice assistant support
- Gold Fin anti-corrosion coating — ideal for UK weather
- Space-saving All-in-One option available
Disadvantages
- Smaller UK installer network than established heating brands
- Not traditionally associated with home heating
- No smart tariff integration yet
- Less long-term UK performance data than established brands
- Air source only — no ground source option
Frequently Asked Questions
Are LG Therma V heat pumps any good?
Yes. Good quality products backed by LG's extensive HVAC and compressor expertise. The R290 monobloc models are particularly competitive.
How much does an LG Therma V cost in the UK?
Fully installed R290 monobloc: £8,000–£13,500. After the £7,500 BUS grant: £500–£6,000.
What refrigerant does the LG Therma V use?
Newest models use R290 (propane, GWP 3). R290 models recommended for future-proofing against F-Gas regulations.
Is LG better than Daikin?
LG's R290 models are more future-proof than Daikin's R32 and typically cheaper. Daikin has a longer UK track record. Efficiency is comparable.
How quiet is the LG Therma V?
Around 35dB in quiet mode — one of the lowest in the market, well within Permitted Development limits.
Does LG make their own compressors?
Yes. LG is one of the world's largest compressor manufacturers, giving full control over the most critical component.
LG and Affordable R290 Heat Pump Technology
LG's entry into the UK R290 heat pump market has helped make future-proof technology accessible at mid-range prices. With the BUS grant and potential savings from solar panel systems, the financial case for switching from a gas boiler is strong. Use our value calculator to see if the numbers work for your home.