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Understand low carbon heating

Learn how it works

Explore the purpose of refrigerants

Familiarise basic system layouts

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Air source heat pumps (ASHPs) are renewable heating systems that extract heat from the outside air to warm your home and provide hot water. They can operate efficiently even when outdoor temperatures are as low as -15°C, making them suitable for the UK climate.

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ASHPs work by absorbing heat from the outside air into a fluid. This fluid then passes through a compressor, which increases its temperature. The higher-temperature heat is then transferred to the heating and hot water systems of the house. It's like a refrigerator in reverse!

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How does an air-to-air-heat pump work Animation Video

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The refrigeration process in ASHPs involves four main components: evaporator, compressor, condenser, and expansion valve. This cycle continuously transfers heat from the outside air to your home, using principles of thermodynamics and phase changes of the refrigerant.

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Modern ASHPs use environmentally friendly refrigerants such as R290 (propane). These have lower global warming potential compared to older refrigerants, making ASHPs an even more eco-friendly choice for heating your home.

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How Do Heat Pump Refrigerants Affect the Environment? - Aura Heating

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There has been a lot of talk recently about Heat Pumps and how they are a more sustainable alternative for heating our homes. The thinking is that they will help to replace heating methods like oil and gas that negatively affect the environment. How do Heat Pumps work? Heat pumps can be a brilliant way […]

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ASHPs are highly efficient, typically producing 3 to 4 times more heat energy than the electrical energy they consume. This can lead to significant reductions in energy bills, especially when replacing older, less efficient heating systems.

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By using renewable heat from the air, ASHPs can significantly reduce your carbon footprint. As the UK's electricity grid becomes greener, the carbon savings from using an ASHP will continue to increase.

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In the UK, the government offers financial incentives for installing ASHPs through the Boiler Upgrade Scheme. Homeowners can receive grants of £5,000 towards the cost of installation, making the transition to this eco-friendly technology more affordable.

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ASHPs can provide both heating in winter and cooling in summer (if the system includes this functionality), offering year-round comfort from a single system. This versatility makes them an excellent choice for UK homes.

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An ASHP is typically installed outside your home, either on the ground or mounted on a wall. It needs sufficient space around it for good air flow. Inside, you'll need space for a hot water cylinder and maybe a buffer tank, depending on your system design.

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Compatibility: ASHPs can work with various heat distribution systems, such as:

Underfloor heating

Radiators

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Discussion Topic: Transitioning to ASHPs

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Discussion Topic: Transitioning to ASHPs

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Let's discuss the challenges and opportunities of transitioning to Air Source Heat Pumps in the UK. Consider the following questions:
1. What are the main barriers to wider adoption of ASHPs in the UK?
2. How can we educate homeowners about the benefits of this technology?
3. What policy changes could encourage more people to switch to ASHPs?
4. How might the job market change as we move towards heat pump technology?

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Barriers to ASHP Adoption:

High installation costs.

Lack of understanding among homeowners.

Older homes may need upgrades.

Limited financial incentives.

Complicated regulations.

Educating Homeowners:

Use social media and community events.

Share success stories.

Partner with local groups for workshops.

Clearly explain financial support options.

Policy Changes:

Increase subsidies for installation.

Offer tax breaks for ASHPs.

Simplify regulations for older homes.

Include ASHPs in energy plans.

Job Market Changes:

New jobs in installation and maintenance.

Need for specialized training.

More R&D roles in energy efficiency.

Jobs in manufacturing and supply chains.

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Heat Pumps Explained - How Heat Pumps Work HVAC