Compare Air Source Heat Pumps

Trying to decide between an air-source heat pump and a ground-source heat pump can be a bit confusing — after all, an air pump is an air pump, right? Well, not exactly. While all heat pump types aim to efficiently heat your home, they operate quite differently. 

Ground-source pumps, which utilise underground temperatures, offer more consistent performance and higher efficiency throughout the year. They do, however, require significant groundwork and space, making them a bigger initial investment. On the other hand, air-source heat pumps are usually less costly and simpler to install but may be less efficient than ground-source heat pumps in colder weather.

Thankfully, with improvements in system designs, these pumps are more than able to maintain a steady output, ensuring your home remains warm throughout the winter. Additionally, the government incentives available in the UK  make them an even more appealing choice to customers.

Choosing the right air source heat pump can significantly boost your home's warmth and energy efficiency. That’s why we recommend that you compare different models like monobloc, split, air-to-air, and hybrid systems with our industry knowledge backing you up every step of the way. 

Each model caters to different heating requirements and spaces, ensuring you find the perfect fit. Don’t worry — we’ve collated all the key information, pros, and cons to help you make an informed decision that aligns with both your environmental goals and lifestyle. 

Monobloc systems

Monobloc systems are a type of air source heat pump where all components are housed within a single outdoor unit. These systems are ideal if you have limited indoor space, as they don’t require any indoor installation. They work by extracting heat from the outside air to heat water for home heating systems. We’d say this model is particularly suited for smaller properties or those looking for a streamlined setup.

Initial costs 

In the UK, the cost of monobloc air source heat pumps ranges from approximately £4,000 to £7,000, excluding installation. Installation can add £1,500 to £3,000 depending on its complexity and location. 

Higher-end models are pricier due to advanced features like improved energy efficiency and quieter operation, while basic models are more affordable but may have lower efficiencies and fewer features.

Installation

Installing a monobloc system is relatively straightforward as it involves a single outdoor unit without the need for any indoor components. You should only receive minor disruptions as the process is usually completed within a couple of days.

Operating costs and efficiency

Monobloc systems are an energy-efficient option, reducing your heating costs substantially in the long run. However, their efficiency can be slightly lower than split systems, especially in extremely cold weather. 

Lower upfront costs and simpler installation are the main benefits of a monobloc system. At the same time, a potential drawback is their performance dip in colder climates compared to other types of heat pumps.

Durability

Monobloc air source heat pumps are built to last, typically providing efficient heating for about 15 to 20 years with proper maintenance. We’d say that the best way to ensure this is by finding a quality installer and conducting frequent maintenance for the most reliable efficiency.

Maintenance

Maintaining a monobloc system will involve basic regular checks such as cleaning air filters and ensuring that the area around the outdoor unit remains clear of debris. 

Split systems

Split systems are made of an outdoor unit and an indoor unit connected by pipes. They are particularly suitable for homes with space for indoor components, offering the benefits of higher efficiency and quieter operation. We’d say split air source heat pump systems are more suitable for medium to large properties due to their indoor and outdoor units.

Initial costs 

The cost of split system air source heat pumps in the UK typically ranges from £5,000 to £10,000, excluding installation. Installation costs can add £2,000 to £4,000 to the overall price. 

High-end models command a premium for features like advanced inverter technology and superior energy efficiency, while it’s important to note that entry-level models are more cost-effective but may offer lower efficiencies and fewer features. Generally, split systems are pricier than monobloc systems due to their complexity and higher installation demands.

Installation

Installing a split system can be a complex task, involving both indoor and outdoor components. The process might take several days, depending on the home’s existing setup and the system's complexity. Homeowners should consider the need for indoor space and the potential disruption to home life, as work will occur both inside and outside the property.

Operating costs and efficiency

Split systems are known for their high efficiency which potentially leads to lower operating costs over time. This type of air-source heat pump model is particularly effective in colder climates given their advanced heat exchange technology. However, the initial higher cost and complexity of installation could be considered a downside for those with tighter budgets or smaller homes.

Durability

With proper maintenance, split system heat pumps are highly durable, lasting up to 20 years or more. Their design allows for less wear and tear on the outdoor unit, as the indoor unit handles a significant amount of the workload, enhancing longevity.

Maintenance

To maintain your split heat pump system, we recommend checking and cleaning the filters, ensuring your indoor and outdoor units are free from obstructions, and checking the refrigerant levels. Annual servicing by a professional is also always a good idea for optimal performance.

Air-to-air heat pumps

Air-to-air heat pumps are a fantastic choice if you’d like to modernise your heating and cooling. These units are made of outdoor and indoor components to efficiently transfer heat from the outside air into your home. They’re perfect for properties lacking space for extensive systems, offering a neat solution that fits neatly into both flats and modern houses needing year-round temperature control.

Initial costs 

You can expect to pay between £1,500 and £3,000 for an air-to-air heat pump in the UK, with installation costs potentially adding another £500 to £1,500. High-end models feature superior energy efficiency and advanced air filtration systems, making them more expensive but also more cost-effective in the long run. These are more budget-friendly than other air source heat pump types, offering a great entry point if you’d rather not skimp on quality.

Installation

Installing an air-to-air heat pump is usually quick and straightforward, so you won’t have to worry about it causing disruption to your day. It’s typically a one-day job, depending on your home’s layout and the system’s complexity. We will say that you’ll want to choose the locations for both units wisely to maximise efficiency and minimise noise, especially if you want your home to remain a peaceful sanctuary.

Operating costs and efficiency

Operating an air-to-air heat pump is cost-effective as it provides significant savings on heating bills with the added advantage of cooling during summer months. While they're excellent for temperature control, it’s worth noting that they don’t supply hot water, which might be a no-no for some households.

Durability

Durability is a strong point for air-to-air systems, with a lifespan of 15 to 20 years when properly maintained. In our expert opinion, they’re a smart investment for those looking to enhance their home’s energy efficiency over many years.

Maintenance

To maintain your air-to-air heat pump system, you should clean the filters regularly and ensure the outdoor unit remains unobstructed. Scheduling an annual service with a professional is also never a bad idea, as this will help detect any issues early, ensuring your system continues to operate efficiently and effectively for years to come.

Hybrid heat pumps

Hybrid heat pumps cleverly combine an air-source heat pump with a traditional gas boiler, providing a flexible and cost-effective solution. They can automatically switch between the boiler and the heat pump depending on the weather, making them ideal for the unpredictable UK climate. Suitable for homes with existing gas connections, they require space for both an outdoor unit and an indoor boiler.

Initial costs 

You should expect to invest between £5,000 and £10,000 for a hybrid heat pump system in the UK, with installation fees adding £2,000 to £3,000. They are generally more expensive than single-system pumps due to their dual functionality which is a benefit for many homeowners.

Installation

Fitting a hybrid heat pump can be quite intense, requiring integration with an existing boiler system and possible upgrades to radiators or pipework. The installation may take a few days, during which there will be some disruption to your home as work is needed both inside and out. We’d recommend planning with a qualified and trusted installer through SpotDif as our suppliers will be able to assess your current system’s compatibility.

Operating costs and efficiency

Hybrid systems are designed to optimise your heating expenses by using the most cost-effective energy source available at the time. They are incredibly efficient, especially in colder weather when the boiler can assist the heat pump. However, as they still partly rely on gas, future fuel prices and carbon taxes could affect your running costs.

Durability

Built to last, hybrid heat pumps can efficiently heat your home for around 15 to 20 years with proper maintenance. Their longevity depends on the quality of both the boiler and the heat pump unit, alongside professional installation.

Maintenance

Keeping the system clean (particularly the filters and external unit) will help maintain optimal performance. Regular checks can help detect any issues early, avoiding costly repairs.

The quickest and most transparent way to compare air source heat pumps is with SpotDif. Make the most of your search by filling out our air source heat pump comparison tool and answering a few brief questions. We’ll just need your:

• Specific requirements: What type of air source heat pump are you looking for? Do you want any specific features or advanced technologies to enhance your heating experience?

  
  

• Financing options: If you require financing options you can let us know during the search process — we’ll make sure you receive accurate quotes and information.

  
  

• Contact details: We will ask for your contact details to personalise the search results and provide you with the most relevant information. Rest assured that your information will be handled securely following our privacy policy.

SpotDif is the tool you need to find air source heat pump suppliers offering the best deals. We’ll scan our network of trusted heat pump brands across the UK and compare their models and quotes so you don’t have to. 

Start your search for an air-source heat pump today with SpotDif.