Answer these simple questions and we will find you the BEST prices
Which type of solar quotes do you need?
Get up to 4 quotes by filling in only 1 quick form
Install a heat pump for less with the BUS grant
Increase the value of your home by installing a heat pump
LG Heat Pumps in the UK: Reviews, Prices & Models (2025)
- An LG THERMA V Monobloc heat pump cost can range from £2,500 to £4,800, with an average price of £3,650, depending on factors such as output capacity and availability.
- The LG THERMA V heat pump series is one of their most popular products on the market today, recognised for its quality with the 2025 AHR Innovation Award, and its quiet operation with the Quiet Mark accreditation.
- The LG THERMA V line of Monobloc heat pumps comes in outputs ranging from 5kW - 16 kw. There are also split and hydro split models of the THERMA V heat pumps.
Renewables continue to climb in importance when meeting energy security in the UK. According to the UK’s Department for Energy Security & Net Zero, renewables were responsible for nearly 50.8% of domestic electricity production in 2024 alone. Furthermore, highly efficient heating and cooling solutions like heat pumps are gaining significant traction as a long-term solution to the fossil fuel crisis.
If you're exploring an innovative and environmentally conscious alternative to traditional boilers, the LG Therma V range presents a compelling option for home heating, cooling, and hot water. This ultimate guide by WhatCost will delve into the currently available LG air-source heat pump line, showcasing why they stand out as a popular option in the UK market.
Ready for green energy? Look no further than WhatCost for a one-stop solution to all your needs. Instead of spending countless hours on researching and vetting installers, spend just 30 seconds filling out our online intake form, and receive up to 4 free home-tailored quotes in return. No costs, no obligations. Simply click below to begin!
- Quotes from local installers
- Payment by finance available
- Save £7,500 with BUS grant
LG heat pump models
LG manufactures a series of heat pumps under their LG THERMA V collection, containing three models: the monobloc, split, and hydrosplit. Each model ranges from 5 kw - 16 kw options and is tailored to meet various household heating needs.
- The LG THERMA V Monobloc series is their most popular model. Compact and efficient, monobloc heat pumps integrate all components into a single outdoor unit, freeing up indoor space in your home and connecting directly to your existing water tank. It’s a simple installation that only requires water pipe connections to be carried out by a qualified heating engineer, thus reducing the risk of indoor refrigerant leaks.
- The LG THERMA Split series differs from monobloc systems as its components are split into an external and internal unit. This design requires refrigerant lines to connect the indoor and outdoor elements. This separation offers a key advantage, being a less bulky outdoor unit, thus creating more space and optimal placement options, which is especially useful for dense neighbourhoods.
- The LG THERMA Hydrosplit series is very similar to the traditional split system in design, but instead of relying on refrigerant lines, this model utilises the existing water piping instead. This approach completely removes the risk of indoor refrigerant leaks while still offering a reliable heating solution. Hydrosplit systems offer a range of indoor unit options, including wall-mounted units and integrated water tank (IWT) suitable for all types of domestic spaces.
Here’s a full breakdown of each model manufactured by LG and information on dimensions, output and components:
| Model | Output (kW) | Type | Dimensions (W, H, D) | Components |
|---|---|---|---|---|
| LG THERMA V Monobloc | 5 - 16 | Air-to-water | Unit (16 kW): 1239mm x 1380mm x 330mm | Outdoor unit, additional domestic hot water (DHW) tank. |
| LG THERMA Split | 4 - 16 | Air-to-water | Unit (16 kW): 950mm x 1380mm x 330mm Indoor unit: 490mm x 850mm x 315mm |
Outdoor unit (ODU), Hydro box, additional domestic hot water (DHW) tank. |
| LG THERMA Hydrosplit | 12 - 16 | Air-to-water | Outdoor Unit (16kW): 950mm x 1380mm x 330mm Indoor unit: 490mm x 850mm x 315mm |
Outdoor unit (ODU), Hydro box, additional domestic hot water (DHW) tank. |
It’s highly advised to consult with a professional heating expert when deciding on the best fit heat pump for your home and its energy needs. That way, you can ensure you get the best possible outcome for your investment.
LG heat pump prices
An LG air source heat pump cost in the UK can range from £2,500 to £4,800, with an average cost of £3,650. These costs can vary based on the model and output capacity you opt for. Installation complexity may also affect your overall costs.
Here’s a breakdown of each model of heat pump and its prices:
| Model | Unit price (incl. VAT) |
|---|---|
| THERMA V R32 Monobloc S (5kW) | £2,520 - £2,590 |
| THERMA V R32 Monobloc S (7kW) | £2,650 - £2,910 |
| THERMA V R32 Monobloc S (9kW) | £2,910 - £3,200 |
| THERMA V R32 Monobloc S (12kW) | £3,950 - £4,120 |
| THERMA V R32 Monobloc S (16kW) | £4,550 - £4,750 |
| THERMA V R32 Split (5kW) | £2,700 - £4,400 |
| THERMA V R32 Split (7kW) | £2,650 - £4,450 |
| THERMA V R32 Split (9kW) | £2,900 - £4,900 |
| THERMA V R32 Split (12kW) | £3,950 - £5,700 |
| THERMA V R32 Split (16kW) | £2,660 - £6,600 |
| THERMA V R32 Hydrosplit (12kW) | £2,600 - £5,700 |
| THERMA V R32 Hydrosplit (14kW) | £2,750 - £4,360 |
| THERMA V R32 Hydrosplit (16kW) | £2,920 - £4,750 |
It’s important to consider several factors when comparing the LG air source heat pump price. Here are the key points that affect these price ranges:
- Model: Each model of the LG THERMA V series is tailored for specific purposes, outputs, and contains a series of perks and components that can all affect your final investment.
- Components: LG's split and Hydrosplit models both require two components: an indoor and outdoor unit. For this reason, calculations for a price range may indicate a much wider range.
- Existing system: Some households may have existing elements in place from previous systems, which can help reduce the initial investment cost.
- Installation: These costs do not include the cost of installation, which is usually decided by a quote from a professional installer. The cost of installing a heat pump is best discussed directly with the installation service provider you opt for.
In addition, average maintenance costs for a standard air source heat pump in the UK range from around £150 to £300. Routine maintenance should not exceed these costs; however, some exceptional circumstances can be more financially demanding.
LG air source heat pump reviews
LG THERMA V heat pumps are one of the most purchased on the market, and for very good reason. They are often applauded for their affordability, silent function, and efficient heat production. The Federation of Master Builders in the UK, an independent organisation committed to transparent reviews of home products, endorses the LG THERMA V series as a “good choice for most homes”.
LG's THERMA V heat pumps were also recognised in 2022 with the prestigious Heat Pump Product of the Year award, further attesting to the innovative design and the LG series' boast. The THERMA V Monobloc S model also received the Quiet Mark accreditation due to the unit's exceptionally quiet operation, helping maintain a peaceful and comfortable home environment.
Advantages and disadvantages of LG heat pumps
The LG THERMA V series is one of the most popular heat pumps on the market today. From competitive pricing to being some of the quietest heat pumps on the market, there’s plenty to applaud about the LG series. However, choosing the ideal solution for your home requires more than just a purchase. Let’s explore the various benefits and drawbacks associated with LG’s range of air source heat pumps, starting with the key advantages:
- Competitive pricing: Roughly priced between £2,000 and £6,900, LG offers a wide range of heat pump options when compared to other popular manufacturers. Their pricing aligns well with other high-ranking brands, making them a feasible option for a wide range of homeowners.
- Energy savings: Being one of the most innovative renewables systems on the market today, LG head pumps can harness up to 75% of their energy from the surrounding air, greatly reducing your heating and cooling expenses. This reliance on renewable energy translates directly into lower energy bills.
- Smart controls: The LG ThinQ™ application allows users to have further control over their heat pump settings through voice control, accessed via Wi-Fi directly from smartphones or tablets. This allows homeowners to optimise comfort and energy usage on the go. The LG ThinQ™ is also compatible with popular voice assistants, such as Google Assistant, Siri and Alexa.
- Reliable warranty: An LG air source heat pump boasts a long lifespan, typically lasting up to 20 years. Furthermore, LG provides a 7-year warranty, offering peace of mind as a token of their confidence in the durability of their products.
- High energy efficiency: The LG THERMA V range of heat pumps boasts an impressive energy efficiency rating of A+++. This essentially means that these heat pumps are up to four times more efficient than traditional fossil fuel-based systems, slashing your carbon footprint and contributing to a more sustainable planet.
- Versatile: Heat pumps can be combined with other renewables to create total energy freedom. For example, heat pumps and solar panels can be combined so that your heat pump is powered by your solar panels.
However, like any product, there will always be some drawbacks that are worth being mindful of. Here’s a breakdown of the key disadvantages you could face regarding LG heat pumps:
- Location limitations: Factors like property size, neighbourhood density, and home conditions can play a crucial role in the suitability and feasibility of an LG heat pump. Even local climate conditions and building insulation levels will play a drastic role in the function of the system. These factors can restrict where the unit can be placed and might not align with every homeowner's home plan or stylistic preferences.
- Installation complexities: Based on the specific model, as well as your heating and cooling demands, some LG air-source heat pump installations may be more complex than others. For example, you may need two separate units (indoor and outdoor), such as the Split or Hydrosplit models. This could create installation challenges, especially for properties with limited space.
- Compatibility costs: For optimal performance, certain LG air source heat pumps might require the installation of additional equipment, such as a backup heating system. This need can increase the overall installation cost and system complexity.
With all pros and cons in consideration, the LG heat pump series remains a highly worthy upgrade for any property. The next important step is getting multiple quotes from trusted professionals, however, this process can require countless hours of research and vetting.
With WhatCost, all it takes is a 30-second online form to receive up to 4 free home-tailored quotes from our nationwide network of pre-vetted professionals. No costs, no obligations. Simply click below and let the bargains come to you!
- Quotes from local installers
- Payment by finance available
- Save £7,500 with BUS grant
LG heat pumps per house size
To choose the best-suited LG heat pump for your home, you need to address certain factors, with the most important being: how much heating and cooling does your home require? The answer hinges on points such as your overall home size, number of bedrooms and bathrooms, as well as average energy consumption.
Given that the LG THERMA V Monobloc series is the most popular heat pump system on offer, here’s a breakdown of each model based on kW output and its home size suitability:
| Home size | Heat pump model | Installation time |
|---|---|---|
| 1 bed house | LG THERMA V R32 Monobloc S 5kW | 2 days |
| 2 bed house | LG THERMA V R32 Monobloc S 7kW | 2 - 3 days |
| 3 bed house | LG THERMA V R32 Monobloc S 9kW | 3 days |
| 4 bed house | LG THERMA V R32 Monobloc S 12kW | 3 - 4 days |
| 5+ bed house | LG THERMA V R32 Monobloc S 16kW | 3 - 5 days |
To make the most optimal choice for your home, it’s highly recommended to choose with the advice of a professional heating expert. That way, they can assess your heating needs and help you choose an option that is tailored to your requirements.
How do LG air source heat pumps compare to other brands?
LG is considered one of the best air source heat pump manufacturers on the market today, preferred by customers for their affordability, reliability, and exceptional silence. On many fronts, LG stands out as a worthy heat pump manufacturer to consider.
Here’s a thorough breakdown of how LG air source heat pumps hold up against some popular alternatives from competitors:
| Brand | Model | Price | Output (kw) | Warranty | Energy efficiency | Air quality | Max indoor noise (db) |
|---|---|---|---|---|---|---|---|
| LG | LG THERMA V Monobloc | £2,500 - £4,800 | 5 – 16kW | 5 - 7 years | A+++ | Micro-protection filters, self-cleaning indoor coil. | 34 |
| Daikin heat pump | Daikin Monobloc | £2,500 - £4,000 | 9 – 16kW | 3 - 7 years | A+++ | Dust collection and deodorising filters. | 45 |
| Nibe heat pump | Nibe S2125 | £6,000 - £9,000 | 8 - 12kW | 7 years | A++/A+ | Ion deodorisation filters. | 43 |
| Mitsubishi heat pump | Mitsubishi Ecodan R744 QUHZ Monobloc | £4,390 - £5,815 | 4.5kW | 3 - 7 years | A++ | Hybrid and Platinum deodorising filters. | 34 |
| Panasonic heat pump | Panasonic Aquarea WH-MDC-G3E5 Monobloc | £3,870 - £6,100 | 9 - 16kW | 3 - 7 years | A+++ | Nanoe X air purification system. | 45 |
| Samsung heat pump | Samsung R32 Monobloc | £1,870 - £3,620 | 5 - 16kW | 7 years | A+++ | Electrostatic PM1.0 air purity filter. | 45 |
| Vaillant heat pump | Vaillant aroTHERM Plus | £3,931 - £6,669 | 3.5 - 12kW | 7 years | A+++ | - | 48 |
Some other popular manufacturers that sell heat pumps in the UK are as follows:
- Viessmann heat pump: The Vitocal heat pump range by Viessmann offers both air and ground source heat pumps for effective heating, cooling, and hot water purposes. They boast high energy efficiency, quiet operation, and easy application.
- Calorex heat pump: Different from most other competitors, Calorex specialises in heat pumps for heating pools rather than homes. Through their cost-effective and highly efficient pool heat pumps, the company has become a popular choice in the UK.
- Hitachi heat pump: The Yutaki heat pump collection by Hitachi provides highly efficient air-to-water heat pumps for domestic use. They are considered very simple to operate, low on noise pollution, and relatively affordable, making them a worthy choice.
- Worcester Bosch heat pump: The Compress heat pump series by Worcester Bosch provides a high quality, reliable, and versatile range of air to water heat pumps, available as a monobloc or a split.
When compared to other heat pump manufacturers in the UK, the LG THERMA V Monobloc heat pump series emerges as one of the quietest models on the market, boasting a lengthy warranty period and a wide range of output options. In pricing, it is also one of the best values for your investment.
Should you choose an LG heat pump?
Known for their reliability, exceptional silence, and long lifespan, LG heat pumps offer an affordable long-term solution to energy security, with potential annual energy savings of up to £290 more than an outdated gas boiler. Existing government incentives like a heat pump grant in the UK (Boiler Upgrade Scheme or the ECO4) can further reduce the payback period, or even completely cover your costs if you qualify for assistance.
LG's THERMA V range provides wide-spanning heating and cooling options tailored to different home needs. Each model offers a set of unique benefits and specifications, tailored to meet the varying requirements of each home. When selecting a model, it's important to take into consideration factors like your budget, local climate, system capacity, and desired heating.
Deciding to install an LG heat pump is a great step towards energy efficiency and sustainability; however, choosing the right professional heating installer can seem like a daunting task. Making an informed decision on heat pump installers can require countless hours of research and vetting from you, often discouraging potential customers from finding the perfect bargain for their needs. Luckily, WhatCost can help.
All it takes is 30 seconds to fill out our online intake form, and you can receive up to 4 free home-tailored quotes in return. Selected from our national network of pre-vetted professionals, our quotes come with no extra charges or obligations. Simply click below to begin, and let the bargains come to you!
- Quotes from local installers
- Payment by finance available
- Save £7,500 with BUS grant
FAQ