In this LG heat pump review, we cover the Therma V range. It has quietly built a strong reputation among UK homeowners and installers, combining genuinely impressive efficiency with smart technology, competitive pricing and a build quality that reflects LG’s decades of electronics engineering expertise.
If you are based in Kent and weighing up whether an LG heat pump is the right fit for your home, this guide covers everything you need to know.
LG Heat Pump Review: Key Facts
Here is the complete at-a-glance overview of the LG Therma V air source heat pump range, covering all the key figures you will want to assess before reading the full detail below.
| Category | Details |
| Brand | LG Electronics (founded 1958, South Korea) |
| Main UK Product Range | Therma V R32 Monobloc, Therma V R32 Split, Therma V R32 Hydrosplit, Therma V R290 Monobloc |
| Max Efficiency (SCOP) | Up to 5.2 (at 35°C flow temperature) |
| Real-World SCOP Range | 3.5 to 4.3 at 35°C to 40°C flow temperature |
| Energy Label | Up to A+++ |
| Unit Cost (ex. installation) | £2,500 to £6,400 depending on model and output |
| Full Installed Cost | £8,000 to £15,000 |
| After BUS Grant (£7,500) | £500 to £7,500 net |
| Installation Labour Cost | £2,500 to £5,000 (estimated) |
| Annual Running Costs | Potential saving of up to 68% on monthly energy bills |
| Operating Temperature Range | Down to -25°C outside |
| Trustpilot Rating (LG UK) | 4.4 out of 5 stars |
| Customer Satisfaction Rating | 4.0 out of 5.0; reliability score 4.1 out of 5.0 |
| Which? Rating | Check which.co.uk for current listings |
| Standard Warranty | 3 years (standard); up to 7 years with an LG-trained installer |
| Best Property Types | Modern, well-insulated homes (Monobloc/Split); older properties with higher heat demand (HT Split up to 80°C) |
| Servicing Requirements | Annual service recommended; typically £100 to £200 per year |
| Refrigerant | R32 (Monobloc, Split, Hydrosplit); R290 (R290 Monobloc) |
| Smart Features | LG ThinQ app, LG BECON Cloud monitoring, compatible with smart home systems |
| MCS Certified | Yes (required for Boiler Upgrade Scheme eligibility) |
| Available Output Sizes | 5 kW to 16 kW |
Are LG Heat Pumps Worth It?
LG heat pumps are worth it for homeowners and landlords in Kent who want a technologically advanced, energy-efficient system from a brand with a global reputation for electronics quality. Here is a brief background on the company before we look at the strengths and weaknesses in detail.
LG entered the HVAC market decades ago and has since developed one of the most technically sophisticated heat pump ranges available in the UK. The Therma V range has been specifically engineered and adapted for the European climate, with models capable of operating efficiently even when outdoor temperatures drop as low as -25°C.
Their compressors are designed and manufactured in-house, which is a significant advantage in terms of quality control and long-term durability.
LG holds a Trustpilot rating of 4.4 out of 5 stars from thousands of UK customer reviews, with heat pump users frequently praising performance and the ThinQ app.
When you compare this to the Samsung heat pump range, which sits in a broadly similar brand and technology tier, LG’s Therma V consistently scores more positively in UK-specific independent installer feedback for build quality and ease of commissioning.
Pros and Cons of LG Heat Pumps
Pros:
- SCOP of up to 5.2 at 35°C flow temperature, with real-world seasonal COPs of 3.5 to 4.3 placing LG solidly above the UK market average
- Three-year standard warranty is better than the 2-year base offered by brands such as Daikin and Viessmann, extendable to 7 years with an LG-trained installer
- Gold Fin and Ocean Black Fin anti-corrosion coating on the heat exchanger extends the unit’s lifespan and is especially valuable in Kent’s coastal areas such as Folkestone, Whitstable and Deal
- High Temperature Split model delivers flow temperatures up to 80°C, making it one of the most retrofit-friendly options available for older properties with small existing radiators
- Operates efficiently down to -25°C outside, ensuring reliable performance through UK winters
- LG ThinQ app and BECON Cloud monitoring provide excellent smart home integration and remote diagnostics
- Competitive unit pricing of £2,500 to £6,400 makes LG one of the better-value options in the premium heat pump market
- MCS certified and fully eligible for the £7,500 Boiler Upgrade Scheme grant
- In-house compressor design and manufacture delivers higher quality control compared to brands that source third-party components
Cons:
- R290 Monobloc is a newer addition to the UK range and has a shorter real-world UK track record than some competitors such as Viessmann or Daikin
- Real-world COP of 2.9 to 3.5 at higher flow temperatures (40°C to 50°C) is noticeably lower than at 35°C, so properties with older, less efficient radiator systems will see reduced efficiency
- LG as a heating brand is less familiar to many UK homeowners than names like Worcester Bosch or Vaillant, which can occasionally make finding service engineers in rural parts of Kent more challenging
- Some models use R410A refrigerant, which has a significantly higher global warming potential than R32 or R290 alternatives
- The Hydrosplit range starts at 12 kW, meaning smaller properties cannot access that configuration
- LG’s UK-specific heat pump after-sales support is occasionally cited as slower than that of brands with dedicated UK-based heating support teams
How Efficient Is an LG Heat Pump?
The efficiency of an LG heat pump is genuinely strong across the Therma V range, with headline SCOP figures that compete with the very best on the UK market. Here is what those numbers actually mean in practice for your Kent home and your energy bills.
Think of SCOP, the Seasonal Coefficient of Performance, as a measure of how far your electricity pound stretches when it goes into your heat pump. An SCOP of 5.2, which LG’s Therma V achieves at 35°C flow temperature, means you get £5.20 worth of heat for every £1 of electricity you consume.
A modern gas boiler at its very best converts roughly 90p in every £1 of gas into usable heat. The difference between the two is substantial.
In real-world testing across UK installations, LG Therma V heat pumps achieve a seasonal COP of 3.5 to 4.3 at 35°C to 40°C flow temperatures. This means that even accounting for the colder days of a typical British winter, you are still getting between 350% and 430% of the heat energy back that you put in as electricity.
The platform average across all UK heat pump brands sits at around 3.5, so LG comfortably matches or exceeds that benchmark.
For context, the Panasonic air source heat pump Aquarea range achieves a real-world seasonal COP of 3.6 to 4.3 at similar flow temperatures, putting it in the same performance tier as LG. The Viessmann Vitocal 150-A and Nibe models edge slightly ahead at the very top of independent benchmarking, but the difference in practical energy costs is often smaller than the headline figures suggest.
What Makes LG’s Efficiency Stand Out
LG designs and manufactures its own compressors, which is unusual in the heat pump industry where many brands rely on third-party components. LG’s scroll compressor uses wet vapour injection technology to maintain efficiency at low ambient temperatures, meaning performance does not drop off as dramatically during cold spells as it can on some competitor units.
At -7°C outside, LG’s R32 Monobloc delivers 100% of its rated heating capacity, which is a strong cold-weather performance figure for UK winters.
LG Heat Pump Range
The LG heat pump range in the UK centres entirely on the Therma V series, which comes in four distinct configurations designed to suit different property types, budgets and installation requirements. Whether you are fitting out a new build in Sevenoaks or retrofitting a Victorian terrace in Canterbury, the Therma V range has a model built for your situation.
| Model | Type | Output Sizes | Refrigerant | Max Flow Temp | Best For | Unit Price (approx.) |
| Therma V R32 Monobloc | All-in-one outdoor unit | 5–16 kW | R32 | 65°C | Modern homes, compact installs | £2,500 to £4,500 |
| Therma V R290 Monobloc | All-in-one, next-gen refrigerant | 5–9 kW | R290 | 65°C | Eco-focused buyers, new builds | £3,500 to £5,000 (approx.) |
| Therma V R32 Split | Split system (outdoor + indoor hydro box) | 4–16 kW | R32 | 65°C | Standard retrofits, mid-sized homes | £3,000 to £5,500 |
| Therma V R32 Hydrosplit | Split with integrated indoor unit and tank | 12–16 kW | R32 | 65°C | Larger homes, space-conscious installs | £4,000 to £6,400 |
| Therma V High Temp Split | Split system, high flow temperature | 9–16 kW | R410A | 80°C | Older homes with existing radiators | £4,500 to £6,500 (approx.) |
The Therma V R290 Monobloc is LG’s newest and most environmentally responsible model, using propane refrigerant with a global warming potential of just 3, compared to R32’s GWP of 675. For Kent homeowners who prioritise environmental impact alongside running costs, this is the model to focus on.
The High Temperature Split is worth highlighting for homeowners in older properties across Kent, such as Victorian and Edwardian houses in areas like Faversham, Tonbridge or Margate. Unlike most heat pumps that top out at 55°C to 65°C, the LG High Temp Split can deliver flow temperatures of up to 80°C.
This means it can work with most existing radiator systems without requiring a full upgrade, removing one of the most common barriers to heat pump adoption in older homes.
When comparing model range depth, the Daikin Altherma series offers a broader selection of configurations, particularly around hybrid and high-temperature split options.
However, LG’s inclusion of an ultra-high-temperature split alongside a modern R290 monobloc gives the Therma V range a strong spread that few competitors match at this price point.
How Much Do LG Heat Pumps Cost?
LG heat pump costs in the UK run from approximately £8,000 to £15,000 fully installed, before the government’s Boiler Upgrade Scheme grant is applied. After the £7,500 BUS grant, which is available to eligible homeowners in England and Wales, the net cost drops to between £500 and £7,500 for most standard residential installations.
LG Heat Pump Pricing Table
| Model | Unit Cost (approx.) | Installation Labour | Total Before Grant | Total After £7,500 Grant |
| Therma V Monobloc 5kW | ~£2,500 | £2,500–£3,500 | ~£7,000–£8,500 | ~£0–£1,000 |
| Therma V Monobloc 9kW | ~£3,200 | £2,500–£3,500 | ~£8,000–£9,500 | ~£500–£2,000 |
| Therma V Monobloc 16kW | ~£4,500 | £3,000–£4,000 | ~£10,000–£11,500 | ~£2,500–£4,000 |
| Therma V R290 Monobloc 9kW | ~£4,000 | £2,500–£3,500 | ~£9,000–£10,500 | ~£1,500–£3,000 |
| Therma V Hydrosplit 16kW | ~£6,400 | £3,500–£5,000 | ~£12,000–£14,000 | ~£4,500–£6,500 |
| Therma V HT Split 16kW | ~£5,500 | £3,500–£5,000 | ~£11,500–£13,500 | ~£4,000–£6,000 |
All prices are approximate, include 0% VAT (heat pump installations are zero-rated) and may vary depending on your specific property requirements and location within Kent. Additional components such as a hot water cylinder, larger radiators or new pipework may add to the total cost.
The £7,500 Boiler Upgrade Scheme grant is deducted directly from your installer’s invoice, so you never have to claim or handle the money yourself. Guscott Heating manages the entire BUS application on behalf of every homeowner and landlord we work with across Kent.
The grant is confirmed until 2030, but installation slots book up quickly during busy periods.
On price, LG sits in a competitive position relative to its peers. The Midea heat pump generally comes in at a lower price point but lacks LG’s UK track record and smart technology integration.
The Nibe and Viessmann ranges at comparable outputs tend to sit higher on price, making LG a strong value option for homeowners who want premium performance without the highest-tier price tag.
How Much Does It Cost to Run an LG Heat Pump?
Running an LG heat pump could save you as much as 68% on your monthly energy bill compared to running a conventional gas or electric heating system, according to LG’s own data based on their Therma V performance figures.
In practical terms, for a typical three-bedroom home in Kent, annual running costs for an LG heat pump sit broadly between £750 and £1,100 depending on your electricity tariff, property size and insulation levels.
Getting Your Running Costs as Low as Possible
The single most effective way to reduce your LG heat pump running costs is to combine it with a smart time-of-use electricity tariff. These tariffs, available from suppliers including Octopus Energy, charge significantly less per unit during off-peak hours, typically overnight. Because heat pumps can heat your home and hot water cylinder during cheap-rate periods and then hold that heat through the day, smart tariffs can cut annual operating costs by around 30% compared to a standard variable rate.
LG’s BECON Cloud monitoring system and the ThinQ app allow you to track your heat pump’s energy consumption in real time. This is genuinely useful because it allows you to spot if the system is working harder than expected, which can be an early sign that something needs attention before it becomes a problem.
For Kent homeowners with solar panels, combining them with an LG heat pump creates a very effective low-cost heating setup. Running the heat pump during the hours when your panels are generating electricity brings your effective fuel cost down to near zero for a significant portion of the heating year.
The Hitachi Yutaki range sits at a comparable running cost level at standard tariffs. However, LG’s smart monitoring tools and stronger app integration give it a practical edge for homeowners who want to actively manage their energy use.
What Warranty Does an LG Heat Pump Come With?
LG heat pumps come with a standard warranty of 3 years, which is better than the 2-year base offered by several major competitors including Daikin and Viessmann. This can be extended to 7 years when the system is installed and maintained by an LG-trained installer, with annual servicing carried out in line with the manufacturer’s guidelines.
How the Warranty Works
The 3-year standard warranty covers parts and labour for any manufacturing defects. To unlock the 7-year extended warranty, your installer must have completed LG’s approved technical training programme, and the system must be serviced annually throughout the warranty period in line with LG’s recommended schedule.
This is a straightforward requirement, and most reputable MCS-certified installers will already meet the criteria or be in the process of doing so.
| LG Heat Pump Warranty | Duration | Conditions |
| Standard warranty | 3 years parts and labour | All installations |
| Extended warranty | 7 years | LG-trained installer required; annual servicing required |
Compared to the Worcester Bosch heat pump, which extends to 7 years via its own accredited installer programme, LG’s 7-year extended warranty is equivalent. The Aira heat pump offers a headline 10-year warranty, and the Samsung compressor warranty runs to 12 years, which are both market-leading in their respective ways.
However, LG’s 3-year base warranty, without any registration hoops to jump through, is a genuine advantage over brands that start at just 2 years.
Which Property Types Are Best Suited for an LG Heat Pump?
LG heat pumps are best suited for a wide range of property types across Kent, thanks to the breadth of the Therma V range. The key to matching the right model to your home is understanding your property’s insulation level, its existing heating distribution system and its total heat demand.
Matching the Right LG Model to Your Kent Home
Therma V R32 Monobloc is best suited for:
- Modern, well-insulated homes with a good EPC rating of C or above
- Properties with underfloor heating installed, where low flow temperatures (35°C to 45°C) deliver peak efficiency
- Homeowners wanting a clean, uncomplicated installation with everything in one outdoor unit
- New builds in Kent’s expanding areas, including Ashford, Maidstone and the Otterpool Park development
Therma V R290 Monobloc is best suited for:
- Environmentally conscious homeowners who want the lowest possible carbon footprint from their heating system
- New builds and full renovations where the heating system is being designed from scratch
- Homeowners who want a future-proofed system as the UK moves away from high-GWP refrigerants
Therma V R32 Split is best suited for:
- Mid-sized detached and semi-detached homes where a separate indoor hydrobox suits the property layout
- Homeowners who want slightly more flexibility in where internal components are sited
- Rental properties in areas like Sittingbourne, Medway or Tonbridge where managing installation complexity keeps costs sensible
Therma V R32 Hydrosplit is best suited for:
- Larger homes with a heat demand that warrants a 12 kW to 16 kW system
- Properties where space inside is limited, as the Hydrosplit integrates the indoor unit and water storage into one compact indoor cabinet
- Homeowners who want an integrated hot water solution without a separate cylinder taking up room
Therma V High Temperature Split is best suited for:
- Older Victorian and Edwardian properties across Kent in areas such as Canterbury, Tunbridge Wells and Faversham, where small radiators are already in place
- Any property where the homeowner cannot or does not want to upgrade to larger radiators or install underfloor heating
- Retrofit installations where a high flow temperature is needed to maintain comfortable room temperatures
A Note on Insulation
The condition of your property’s insulation affects the efficiency of any heat pump significantly. Guscott Heating carries out a full heat loss calculation survey for every property we assess across Kent, ensuring the system we recommend is sized correctly and that your home is suitable for an efficient heat pump installation. A pre-installation survey is always included as part of our free quote process.
What Are LG’s Customer Ratings?
LG’s customer ratings across independent review platforms reflect a broadly positive picture for both the brand overall and the Therma V heat pump range specifically.
Trustpilot
LG UK holds a Trustpilot rating of 4.4 out of 5 stars from thousands of UK customer reviews, with heat pump users specifically praising the system’s performance levels and the ease of use of the ThinQ app. Positive reviews from heat pump owners frequently highlight the reliability of the units once installed and the significant reduction in heating bills compared to their previous gas boilers.
Where negative reviews exist, they most commonly relate to response times from LG’s customer support team rather than product quality, which is a consideration worth bearing in mind when choosing your installer, since a good local installer can handle the majority of post-installation queries on your behalf.
In independent assessments, LG carries a customer satisfaction rating of 4.0 out of 5.0 and a reliability score of 4.1 out of 5.0 across heat pump product categories. These figures place LG ahead of the Midea heat pump on both metrics, and broadly on a par with the Hitachi heat pump range in terms of customer sentiment.
Which?
Which? assessments cover real-world reliability, ease of installation and how accurately manufacturers’ efficiency figures reflect real-world running costs. We recommend checking the current Which? heat pump review listings directly for the most up-to-date independent analysis on the LG Therma V range.
The Worcester Bosch heat pump holds a positively rated Which? assessment highlighting its A+++ ratings, and LG’s comparable efficiency figures and growing UK installer network put it in a similar tier for independent review purposes.
Is an LG Heat Pump Right for Your Property in Kent?
An LG heat pump right for your property in Kent depends on your specific circumstances, priorities and the type of home you own. Here is a straightforward buying guide to help you decide.
Choose an LG Heat Pump If…
- You want a technologically advanced system from a globally established brand with a strong track record in compressor engineering and smart electronics
- Your home is reasonably well insulated, with an EPC rating of C or above, making it a good candidate for a low-temperature system
- You own an older property with existing radiators that you cannot replace, since the High Temperature Split can deliver flow temperatures up to 80°C and work with most existing systems
- You want smart home integration through the LG ThinQ app and BECON Cloud monitoring to track and optimise your energy use
- Your Kent property is in a coastal area such as Whitstable, Deal, Folkestone or Herne Bay, where the Gold Fin and Ocean Black Fin anti-corrosion coating provides protection against salt air and damp conditions
- You are a landlord in Kent looking to improve your rental property’s EPC rating and reduce tenant energy bills
- You want a standard 3-year warranty as a minimum, with the option to extend to 7 years through a trained installer, without registration hoops
- You are eligible for the £7,500 Boiler Upgrade Scheme grant and want to maximise value for money on a premium system
- You want a system where the SCOP figures hold up in independent real-world testing, not just in manufacturer brochures
Do Not Choose an LG Heat Pump If…
- Your budget is tight and you need the most affordable possible net cost after the grant, in which case the Cosy 6 heat pump from Octopus Energy or the Midea heat pump may be a more accessible entry point
- You want the very highest real-world SCOP figures available on the UK market, where Viessmann Vitocal 150-A and Nibe edge ahead slightly in the most rigorous independent benchmarking
- You want a dedicated bundled energy tariff partnership to reduce running costs further, as LG does not currently offer an equivalent to the Viessmann OVO Heat Pump Plus programme
- Your property has very poor insulation with no plans to upgrade, as the real-world efficiency at higher flow temperatures is noticeably lower and the investment will be harder to justify
- You want a hybrid system that keeps your existing gas boiler as a backup while you transition, as LG does not currently offer a hybrid model, unlike the Worcester Bosch Compress 5800i Hybrid
Get a Free Heat Pump Quote in Kent
Guscott Heating installs air source heat pumps across Kent, covering Maidstone, Canterbury, Tunbridge Wells, Folkestone, Sevenoaks, Ashford, Sittingbourne, Medway, Faversham, Dover, Deal, Tonbridge, Whitstable, Herne Bay, Margate and all the surrounding towns and villages.
Request your free air source heat pump installation quote today.
Our team will visit your property, carry out a full heat loss survey, confirm your eligibility for the £7,500 Boiler Upgrade Scheme grant and provide a detailed, no-obligation installation quote specifically tailored to your home.
We are MCS-certified, we handle the BUS grant application on your behalf and we ensure your LG warranty is properly registered from day one.
The BUS grant is confirmed until 2030, but installation slots are limited and fill quickly through the spring and summer months. Getting in touch now means you will not miss out when you are ready to move forward.
Frequently Asked Questions
Can an LG heat pump also cool my home in summer?
Some models in the LG Therma V range do offer a cooling function as well as heating. The Split and Hydrosplit configurations can operate in cooling mode during warmer months by reversing the refrigerant cycle, drawing heat out of your home rather than into it.
This is not available on all monobloc configurations, so it is worth confirming with your installer during the survey stage if summer cooling is a priority for you. Given Kent’s warmer summers, this can be a genuinely useful feature for homeowners who want year-round climate control from a single system.
How quiet is an LG heat pump?
LG heat pump noise levels vary by model. The R32 Monobloc range operates at a sound power level of around 63 dB(A), which is comparable to a normal conversation at close range and quieter than most gas boilers. The newer R290 Monobloc models and the Split range tend to operate more quietly.
LG also introduced a 5 to 6 dB lower sound power level on the R32 Monobloc range compared to its previous generation, which is a meaningful improvement. If noise is a concern for your Kent property, particularly if the outdoor unit will be sited close to a neighbour’s boundary, your installer should confirm the specific sound level for the model they recommend.
Does an LG heat pump work with smart home systems like Google Home or Amazon Alexa?
Yes. The LG ThinQ app is compatible with Amazon Alexa and Google Assistant, allowing you to control your heat pump using voice commands or through your smart speaker. You can adjust heating schedules, set temperatures and check operating status remotely from anywhere with a mobile signal.
The BECON Cloud platform adds a further layer of monitoring, allowing your installer to perform remote diagnostics and spot any issues without needing to visit your home, which can significantly reduce service call-out times.
Will installing an LG heat pump improve my property’s EPC rating?
In most cases, yes. Replacing a gas boiler with an MCS-certified air source heat pump almost always results in an improvement to your property’s Energy Performance Certificate rating. The improvement can be one or two full bands in many cases. For landlords in Kent, this is increasingly important as Minimum Energy Efficiency Standards are expected to tighten in the coming years.
A higher EPC rating also makes a property more attractive to buyers and tenants, and research suggests that properties with heat pumps installed can achieve a property value uplift of around 3%.
How does an LG heat pump handle a power cut?
An LG heat pump, like all electrically powered heat pumps, will not operate during a mains power cut. If you are concerned about heating continuity during an outage, one option worth exploring is pairing your heat pump with a home battery storage system.
A battery charged by solar panels during the day can power the heat pump at a lower load during a short outage, providing basic heating and hot water until mains power is restored. Guscott Heating can advise on battery storage and solar panel options alongside any heat pump installation we carry out across Kent.
