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What is an air source heat pump system?
How does an air source heat pump work?
Nu-Heat’s NIBE air source heat pump range
Why choose an air source heat pump from Nu-Heat?
Is an air source heat pump system right for me?
How much does an air source heat pump cost?
Find an air source heat pump installer
Want help finding the right ASHP?

Air source heat pumps (ASHPs) are a popular low-carbon, renewable heating system. They are suitable for a wide range of properties and are also eligible for the Renewable Heat Incentive scheme.

What is an air source heat pump system?

An air source heat pump (ASHP) is a low-carbon, renewable heat source that is suitable for a wide range of homes. Aside from their eco credentials, an air source heat pump system is also very efficient. For every unit of energy it uses to extract heat from the air, it typically outputs three times more as heat, meaning air source heat pump efficiency is around 300%!

  • Low carbon, environmentally friendly heat source
  • Highly efficient, transferring around three times more energy into a home as heat than it uses to extract it from the air
  • MCS approved for the Renewable Heat Incentive (RHI)
  • Little outdoor space required, meaning an air source heat pump system is suitable for most urban properties
  • NIBE air source heat pumps are exceptionally quiet thanks to their innovative Owl Wing Technology
What is an air source heat pump system?

How does an air source heat pump work?

An air source heat pump extracts heat from the air, absorbing this into a refrigerant fluid. The fluid is then passed through an electric compressor which increases the fluid’s temperature, using this higher temperate to fuel the home’s heating and hot water.

Air source heating systems work effectively year-round, even in temperatures as low as -20°C.

In this video you’ll discover

How does an air source heat pump work?
Would my property benefit would benefit from an ASHP
Do I need planning permission?

Nu-Heat’s NIBE air source heat pump range

Nu-Heat design and supply high-quality NIBE air source heat pumps, backed by a long 7-year warranty when commissioned by one of our engineers.

We offer four different sizes of air source heat pump to suit small, medium or large homes.

More detailed information on the NIBE ASHP models, including their efficiency, size and sound level can be found below:

NIBE air source heat pumps

NIBE 6KW ASHP

Model size 6kW
Air source heat pump efficiency (CoP)* 3.5
Operating voltage 230V 50Hz
Net weight 66kg
Dimensions (height includes stand) H791 x W993 x D364mm
Sound power level at 6m free standing* 26.5dB(A)

*In accordance with EN 14511 for heat source entry at 7°C / hot water flow at 35°C

NIBE 6kW Air Source Heat Pump

NIBE 8KW ASHP

Model size 8kW
Air source heat pump efficiency (CoP)* 4.3
Operating voltage 230V 50Hz
Net weight 90kg
Dimensions (height includes stand) H945 x W1035 x D422mm
Sound power level at 6m free standing* 30.5dB(A)

*In accordance with EN 14511 for heat source entry at 7°C / hot water flow at 35°C

NIBE F2040 8KW Air Source Heat Pump

NIBE 12KW ASHP

Model size 12kW
Air source heat pump efficiency (CoP)* 4.5
Operating voltage 230V 50Hz
Net weight 105kg
Dimensions (height includes stand) H1045 x W1145 x D452mm
Sound power level at 6m free standing* 33.5dB(A)

*In accordance with EN 14511 for heat source entry at 7°C / hot water flow at 35°C

NIBE F2040 12kW ASHP

NIBE 16KW ASHP

Model size 16kW
Air source heat pump efficiency (CoP)* 4.53
Operating voltage 230V 50Hz
Net weight 135kg
Dimensions (height includes stand) H1500 x W1145 x D452
Sound power level at 6m free standing* 37.5dB(A)

*In accordance with EN 14511 for heat source entry at 7°C / hot water flow at 35°C

NIBE F2040 16kW ASHP

Why choose an air source heat pump from Nu-Heat?

Because we are experts in integrating heat pumps and underfloor heating – it’s what we do!

As a Microgeneration Certification Scheme (MCS) accredited company, we know what it takes to provide you with an efficient system that effectively heats a home, whilst also keeping running costs low.

We are here to provide the perfect heating package, meticulously tailored to each home. You also benefit from one point of responsibility – we will carefully design everything – for complete peace of mind.

Bespoke heating design

Seamlessly integrating the air source heat pump and underfloor heating

Long warranty

NIBE air source heat pumps are covered by a 7-year warranty when commissioned by Nu-Heat
Installation guides and manuals

Supporting RHI applications

Access the RHI with our MCS support package which includes on-site commissioning
MCS approved heat pumps

Free lifetime support

We support Nu-Heat systems for life, so you can always call on us for technical support

Award-winning customer service

We’re the only heating company to hold a Distinction from the Institute of Customer Service

It’s definitely a far cheaper and greener option than oil – and we will receive around £1,000 back from the RHI each year. Nu-Heat were brilliant from the start; so professional and helpful.

Frieda Garrett – Homeowner

Why we supply NIBE air source heat pumps

At Nu-Heat, we only use the highest quality, tried-and-tested components for all of our systems. That’s why we design and supply NIBE air source heat pumps – they are the best in the ASHP market.

NIBE air source heat pumps are:

  • More efficient
  • Quieter
  • Covered by a long warranty period – 7 years when commissioned by a Nu-Heat engineer
Why we supply NIBE air source heat pumps

Is an air source heat pump system right for me?

An air source heat pump can be installed in a range of properties, whether small or large, rural or urban.

An ASHP is right for you if:

  • You are looking for a low-carbon, eco-friendly and sustainable way to heat your home
  • The property is well insulated – this is important for efficiency and keeping running costs low
  • There is not enough outside space need for a ground source heat pump – typically three times the total floor area of the property

Off the gas grid? An air source heat pump is also one of the most cost-effective ways to heat your home. Take a look at this running cost comparison:

Is an air source heat pump system right for me?
ENERGY SOURCE INPUT COST EFFICIENCY OUTPUT COST
ASHP 15.0p/kWh 300% efficient  5.0p/kWh
Mains Gas 4.3p/kWh 89% efficient  4.8p/kWh
Oil 4.9p/kWh 91.6% efficient  5.3p/kWh
LPG 5.8p/kWh 89% efficient  6.6p/kWh
Electric 15.0p/kWh 100% efficient  15.0p/kWh
Logs 8.3p/kWh 80% efficient  10.4p/kWh
Coal 6.3p/kWh 80% efficient  7.9p/kWh
Wood Pellet 5.5p/kWh 90% efficient  6.1p/kWh

*Please use this table as a guide as energy prices can vary.

How much does an air source heat pump cost?

A high-quality and well-designed air source heat pump system costs start from £6,000. This includes:

  • A bespoke design, tailored to the property
  • Installation schematics
  • The air source heat pump, domestic hot water cylinder, buffer tank, circulation pumps and all of the connecting brassware for the components
  • MCS support to successfully apply for the RHI
  • Lifetime technical support

Because air source heating systems are eligible for the Renewable Heat Incentive (RHI), you can offset the initial cost with payments over a 7-year period – as much as £7,000.

How much does an air source heat pump cost?
RHI Payments Air source heat pump
RHI Tariff payment pence / kWh 10.71p
Potential RHI payments over 7 years using a NIBE air source heat pump* £7,000

*An average three-bed house using 15,000kWh of heating per year with a SPF of 2.7 for the ASHP. February 2020.

The cost to have an air source heat pump installed varies, but as a rough estimate, it is usually around half of the cost of the unit itself. We can help you find an experienced installer through Nu-Heat’s Registered Installer Network.

Find an air source heat pump installer

Find an experienced and reputable heating engineer to install your air source heat pump system with Nu-Heat’s Registered Installer Network.

Air Source Heating FAQs

Is my property suitable for an air source heat pump?

Providing the property is well-insulated, an air source heat pump is likely to be suitable. Insulation is really important because it prevents heat escaping, enabling the heat pump to work efficiently at lower flow temperatures.

The levels of insulation in new build properties, and generally those built in the last 10 years, are likely to be suitable for an air source heat pump. Older properties will require insulation upgrades like loft, cavity wall and glazing improvements.

Can air source heating be installed in an older building?

Yes, it can, providing that the insulation is being improved – ideally as close to current build regulations as possible. This enables the air source heat pump to work efficiently and keeps running costs low.

Will an air source heat pump provide all of my heating and hot water, even when it’s freezing outside?

Yes. An air source heat pump works effectively year-round, even in temperatures as low as -20°C.

How efficient are they?

An air source heat pump is around 300% efficient. This is because for every unit of energy it uses to extract heat from the air, it typically outputs over 3 units of heat energy into the property.

What are the incentives of buying an air source heat pump?

An air source heat pump is a low-carbon, efficient renewable technology. A big benefit is that it offers a cleaner and greener way to heat a home – no fossil fuels.

Aside from their eco credentials, an ASHP is also inexpensive to run and cost-effective in most projects, especially when you factor in the potential payback through the Renewable Heat Incentive.

Do I need planning permission?

In the majority of cases an air source heat pump does not require planning permission, falling under Permitted Development in line with MCS020. Obviously, it is important to check this before getting started!

If the property is listed, in an Area of Outstanding Natural Beauty or Conservation Area, planning permission will be required.

How much space do I need for an air source heat pump?

Not much! The air source heat pump unit is fitted outside of the property. You will need some space inside for the domestic hot water cylinder, buffer tank and the other components.

For heat pumps up to 12kW, you need a footprint around the same size as a standard hot water cylinder – similar to a large airing cupboard.

Where do I site the unit?

The main air source heat pump unit will be fitted outside the property with the domestic hot water cylinder and associated parts installed indoors.

How far away does the heat pump need to be from my neighbour’s house?

The actual distance a heat pump needs to be from a neighbouring property depends on the unit used and any fences, hedges, walls etc. between the heat pump’s location and the assessment position. This is covered by MCS020 – something we take care of for you.

Can any plumber install and air source heat pump?

Yes. Any competent plumber can install an ASHP to MCS standards with our support.

How can I ensure it is installed correctly?

Nu-Heat offers a unique air source heat pump MCS support package. This includes an on-site commissioning visit from one of our engineers who will check that the ASHP has been installed correctly.

How long does it take to install?

Plumbing an air source heat pump takes a similar amount of time to installing a conventional boiler. Electrically, heat pumps are a little more involved, so it may take a couple more hours to wire than a boiler.

Are air source heat pumps noisy?

No. An air source heat pump makes less noise than the flue of a gas boiler. NIBE ASHPs are the quietest on the market thanks to their Owl Wing Technology.

What are the maintenance processes and costs?

An air source heat pump should be serviced yearly to maintain the warranty and to ensure the system is working as it should be. Servicing is also a requirement under the Renewable Heat Incentive. It costs around £200-£300 for an annual service.

What is the lifespan of an air source heat pump?

NIBE air source heat pumps come with a 7-year warranty when commissioned by a Nu-Heat engineer but you can expect a life expectancy well in excess of 10 years.

Will an air source heat pump work with my existing radiators?

No, we would not recommend it. Air source heat pumps are at their most efficient when producing low flow temperatures. Because of this, they should be paired with low temperature heat emitters, like warm water underfloor heating.

This stops the heat pump from overworking and keeps running costs low. Radiators are still an option but they would need to be oversized to effectively heat the room/s with lower water temperatures.

Can you program an air source hear pump to provide heating at certain times?

Yes, you can, but we would advise against it. This is because an air source heat pump is designed to work as a weather compensation system, running as and when needed to heat the home, rather than at predefined times.

Can I use it 24 hours a day?

Yes, absolutely. It’s the most efficient way.

Is an air source heat pump just an off-grid option?

No. Well-insulated properties that have access to mains gas are still suitable for an air source heat pump. Providing it is designed and installed correctly, the running costs will be low – comparable to mains gas – but with the added bonus of lower carbon emissions and quarterly RHI payments.

You will find that air source heat pumps are generally more popular in off-grid areas, and this is because they offer far lower running costs in comparison to oil, LPG or electric-only heating systems.

Got a question we haven’t covered? Get in touch. We’d be happy to help.

Want help finding the right heat pump solution?

We would love to speak with you to discuss your project. If you have a question about your existing Nu-Heat system, our technical support team are at hand.

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