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Heat pumps

Heat pumps from Nu-Heat

A heat pump from Nu-Heat transfers significantly more energy into a property as heat than it uses to extract it from the ground or air, helping to lower fuel bills and reduce environmental impact. From ground source to air source, we will specify the correct heat pump for the project.

Heat pumps work by extracting the inexhaustible free supply of solar energy stored naturally either in the ground or air and utilising it for domestic heating and hot water. Solar energy in this form is an unlimited resource that produces no harmful emissions and requires no transportation or supply pipelines.

Everything you need to know about heat pumps

In this video our Technical Account Manager Rachel Roberts, who has over 17 years’ experience with heat pumps, answers the most commonly asked questions we hear.

Ground source heat pump (GSHP) – how it works

1. Extraction
It takes an inexhaustible free supply of low-grade solar energy stored naturally in the ground.

2. Process
Heat is absorbed from a cold space (i.e. the ground), processed and released for heating and domestic hot water. Even at temperatures as low as -20°C, a GSHP can supply significantly more energy as heat than it uses to extract it from the ground.

3. Input vs. Output

To access this free environmental supply an energy input is required.
In a well-insulated property every single kilowatt hour of electricity used to power the heat pump can provide up to three kilowatt hours of free energy. This ratio is known as the Coefficient of Performance (CoP), as shown in the diagram the CoP would be four, meaning the efficiency of the
heat pump is 400% – compare this to a boiler at 90% efficiency and the advantage is clear.

4. Control
Most systems are run using weather compensation control, allowing the heat pump to vary its operation based on the temperature requirements of the house in relation to the outside air temperature, time of day, etc.

5. Storage
The heat pump also provides all domestic hot water needs on demand and can be combined with Nu-Heat’s solar thermal panels for even higher energy savings and lower running costs.

Air source heat pump (ASHP) – how it works

Air source heat pumps, sometimes known as air-to-water systems, work on a similar principle to ground source heat pumps but using warmth extracted from the air. They will operate in temperatures as low as -20°C.

Low temperature warmth from the air is absorbed by a fluid held in the ASHP. The fluid then passes through a compressor where its temperature is increased before being made available for the heating and domestic hot water circuits of the house.

Air source heat pumps require no digging or drilling and few plumbing connections are used during installation, making them a cost effective option.

Why choose a heat pump from Nu-Heat?
  • Nu-Heat underfloor heating and heat pump integration expertise
  • Nu-Heat product range is MCS approved and documentation is MCS compliant
  • ‘Free’ energy – up to four units of heat output for every unit of electricity input
  • The ability to fulfill all underfloor heating and domestic hot water requirements
  • Lower carbon footprint from a renewable energy source
  • Approved under the government incentive scheme – the Renewable Heat Incentive (RHI)

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