Air Source Heat Pumps FAQs

Air source heat pumps are a low-carbon heating system that uses similar processes found in a refrigerator or freezer. A fan draws the air from outside and passes it through an evaporator where the refrigerant circulates and evaporates. The refrigerant then goes through a compressor, which increases the temperature. The heated refrigerant then transfers its heat to the heating and hot water circuits of the building. Once the liquid cools down, it gets used for the next cycle. A benefit of heat pumps is they only require a small amount of energy to run, even during the coldest weather.

• ASHPs are extremely energy efficient
• They can reduce homeowners bills by up to 25%
• They are very quiet… they make as much noise as your refrigerator
• Air source heat pumps are easy to install
• They are low cost and easy to maintain
• There are government grants available to offset some initial costs

An Air Source Heat Pump can have multiple uses in a home or business.

These are:

Air Source Heat Pumps for Heating

Heat Pumps are great for heating homes because they’re efficient and cost effective. Rather than burning fossil fuel like traditional boilers, Air Source Heat Pumps use heat from the outside air and turns to water.

Air Source Heat Pumps for Hot Water

Air-to-Water Heat Pumps can be used to generate hot water for a property. This means homeowners can use their Air Source Heat Pump to heat Radiators and Underfloor Heating.

Determining if a property is suitable for an Air Source Heat Pump involves evaluating several factors, including the buildings insulation, location and existing heating system, Here are key considerations:

• Insulation and Energy Efficient
• Location and Climate
• Existing Heating System
• Energy Demand
• Incentives and Grants
• Electricity Supply & Cost
• Noise and Planning Considerations

Air Source Heat Pumps do produce some noise from the outdoor unit, which houses the fan and compressor. However, the noise level varies depending on the model, installation and operating conditions. The typical noise level range is 40-60 decibels which is the same as regular kitchen fridge.

In most cases, Air Source Heat Pumps are more cost-effective than traditional gas or electric heating solutions. Depending on the size and efficiency

• Energy Efficiency: Heat pumps are highly efficient, reducing energy bills by transferring heat rather than generating it.
• Environmental Benefits: They have a lower carbon footprint and use renewable energy sources, making them eco-friendly.
• Cost Savings: Lower operating costs and potential rebates can make heat pumps a cost-effective choice over time.
• Versatility: Heat pumps provide both heating and hot water, and work year-round for consistent comfort.
• Comfort and Consistency: They offer even temperature distribution and reliable hot water supply.
• Quiet Operation: Modern heat pumps operate quietly, minimizing noise.
• Advanced Features: Many come with smart controls and can integrate with renewable energy sources for added efficiency.

Yes, an air source heat pump can work effectively in winter, even at temperatures of -25. Here's a brief overview:

Performance in Winter

• Efficient Operation: Modern air source heat pumps are designed to operate efficiently in cold temperatures. They extract heat from the outside air, even when it's cold, and transfer it inside.
• Lower Efficiency at Very Low Temperatures: As temperatures drop significantly, the efficiency of air source heat pumps can decrease. Some models are optimised for cold climates and can maintain efficiency at lower temperatures.
• Defrost Cycle: In very cold weather, frost can build up on the outdoor unit. Most heat pumps have a defrost cycle to clear this frost and maintain performance.

Yes, you can run a heat pump with solar panels, and this combination can be quite effective for improving energy efficiency and reducing utility costs. Here’s how it works and some key benefits:

How It Works

1. Direct Power Supply: Solar panels generate electricity from sunlight. This electricity can be used to directly power the heat pump, reducing the amount of electricity you need to draw from the grid.
2. Grid-Tied System: In many cases, solar panels are connected to the grid. You can use the electricity generated by your solar panels to offset the grid electricity used by your heat pump, potentially reducing your energy bills.
3. Battery Storage: If you have a battery storage system, you can store excess solar energy generated during the day and use it to run the heat pump during periods when solar generation is low, such as at night.

For an air source heat pump, you generally need:

Outdoor Unit

• Front Clearance: ~1 meter (3 feet)
• Sides/Back Clearance: ~0.5 to 1 meter (1.5 to 3 feet)
• Mounting Surface: Stable, level surface like a concrete pad

Indoor Unit

• Space: Enough room for installation, maintenance, and ventilation

Ensure the outdoor unit is placed away from noise-sensitive areas and check local regulations for specific requirements.

The Boiler Upgrade Scheme (BUS) is a government grant available for individuals in England and Wales who wish to install a heat pump. The scheme supports three types of low carbon heating systems, and you can receive one grant per property:

• Air Source Heat Pump: £7,500 towards the cost and installation.
• Ground Source Heat Pump: £7,500 towards the cost and installation (includes water source heat pumps).
• Biomass Boiler: £5,000 off the cost and installation.

The grant amount should be deducted upfront from any quotes provided by your installer. The BUS is available to homeowners and small business owners in England and Wales only.

Eligibility Requirements:

• Property Ownership: You must own the property, whether it is a home or a small business property.
• Existing Heating System: You need to have a fossil fuel or electric heating system without a heat pump.
• Energy Performance Certificate (EPC): A valid EPC is required.
• Installation Capacity: The property must have a maximum installation capacity of up to 45kW, which covers most homes.
• Certified Installer: Your installer must be certified by the Microgeneration Certification Scheme (MCS) and a member of an approved consumer code.

For biomass boilers, additional conditions apply:

• Location: The property must be in a rural area and not connected to the gas grid.
• Not Self-Build: The property must not be a self-build.

Speak to a member of the team about our Umbrella scheme, making it even easier for you to obtain a government grant.