Ground Source Heat Pump Vs. Air Source Heat Pump

Driven by the need for a cleaner future, the world is turning to renewable energy and heat pumps have emerged as a leading solution for heating and cooling buildings.

These systems offer an alternative to traditional gas and oil boilers, providing energy efficiency and a reduced carbon footprint. If you’re considering a heat pump installation, it’s important to know that there are two main types: ground source and air source. The ideal choice often depends on the property type, and how much land you have at your disposal.

What Are Heat Pumps?

Heat pumps are devices that transfer heat from one place to another, rather than generating it directly. This process makes them more energy-efficient than traditional heating and cooling systems. 

Heat pumps can extract heat from the air or the ground, providing warmth in the winter and cooling in the summer. They help reduce energy costs and lower your carbon footprint, especially when combined with solar panels in place to help power them. For an in-depth look at air source heat pumps, check out The Ultimate Guide: What Is an Air Source Heat Pump. 

Why Choosing the Right Heat Pump Matters

Choosing the correct heat pump can significantly enhance sustainability and decrease your energy bills. These systems offer long-term savings and environmental advantages. For instance, an air source heat pump might not be the best choice for a property with minimal outdoor space, just as a ground source heat pump might not be suitable for a location with specific geological limitations. 

Which Heat Pump Is Best for You?

Several factors should be taken into consideration when deciding between an air source or ground source heat pump. These include property size, location, budget, and environmental goals. Consulting with experts can provide clarity and ensure the chosen system meets your requirements. At 21 Degrees, we offer consultations to help you navigate these decisions. 

For Homeowners

When choosing between systems, homeowners must consider several key factors:  

• Property Characteristics: The size and layout of your home significantly influences the right heat pump capacity and installation complexity.  

• Financial Aspects: Your budget encompasses not only the initial purchase and installation costs but also the potential long-term return on investment through energy savings and potential government incentives.  

• Installation Practicality: For existing homes, the feasibility and level of disruption involved in retrofitting a heat pump, as well as its compatibility with your current heating system (radiators, underfloor heating), are vital considerations. 

Air Source Heat Pumps: Often present a more accessible solution for homeowners due to typically lower upfront costs and less invasive installation. 

Ground Source Heat Pumps: While involving a higher initial investment and more significant groundwork, GSHPs can deliver superior long-term energy efficiency and stability. 

For Commercial Buildings

Commercial building owners have a slightly different set of considerations. 

• Sustainability Objectives: Your organization's energy goals and commitment to sustainability targets will heavily influence the preference for a highly efficient system like a GSHP.  

• Property Constraints: The size of the building and the availability of suitable land for ground loop installation are critical determinants for GSHP viability.  

• Environmental Context: The location and climate will still play a role in performance, although commercial systems often have more robust design considerations.  

• Economic Evaluation: A comprehensive assessment of upfront capital expenditure, ongoing operational costs, and potential integration with other building management systems is essential. 

Ground Source Heat Pumps: May be particularly well-suited for commercial properties with ample land, offering significant energy savings and contributing to sustainability goals. 

Air Source Heat Pumps: Offer greater adaptability to various commercial building types and may be a more practical choice when land availability is limited.  

It’s also worth noting that the government run a boiler upgrade scheme that applies to both ASHPs and GSHPs. 

Not sure which system is right for your property? Contact 21 Degrees for a consultation. 

Ground Source Heat Pump Vs. Air Source Heat Pump – Key Differences 

Here’s a breakdown of each heat pump type: 

Ground Source Heat Pumps

Ground source heat pumps (GSHPs) extract heat from the ground through a series of pipes. These pipes can be arranged in two different configurations: 

• Horizontal loop: Pipes are laid out horizontally in trenches. 

• Vertical loop: Pipes are drilled vertically into the ground. 

GSHPs are known for their efficiency, which remains stable throughout the year. Installation requires careful planning and groundwork. They are suitable for properties with sufficient land or where ground conditions allow for drilling. 

Learn about our Ground Source Heat Pumps. 

Benefits 

• Highly efficient year-round, regardless of outdoor temperature.  

• Lower long-term operating costs. 

• Quieter operation and more stable performance.  

• More efficient in colder climates. 

Air Source Heat Pumps

Air source heat pumps (ASHPs) absorb heat from the outside air. They also come in two types: 

• Air to water: Distributes heat through a wet central heating system. 

• Air to air: Circulates warm air directly. 

ASHPs are efficient and easier to install than GSHPs. They are an excellent choice for properties with limited outdoor space. 

Learn more about our Air Source Heat Pumps. 

Benefits 

• Lower upfront cost compared to GSHP. 

• Easier and faster installation. 

• Ideal for urban settings and properties with limited outdoor space.  

• Doesn’t need excessive outdoor space for installation. 

Ground Source Vs. Air Source Heat Pump (Comparison Table)

The Importance of Proper Design and Installation

Choosing the right heat pump is only the first step on your journey towards a more energy-efficient and comfortable home. Proper design and installation are key to ensure the best performance and efficiency. 21 Degrees offers expert consultation and design services to tailor systems to your property’s specifications. Our experience and accreditations ensure a smooth and effective installation process. We collaborate closely with clients to provide guidance and support throughout the project. 

For more information, please visit our design services page. You can also view our awards and accolades or request a quote. 

Ready To Make the Change?

Both ground source and air source heat pumps offer viable solutions for sustainable heating and cooling. The best choice depends on individual circumstances and property requirements. At 21 Degrees, we’re here to help you navigate this decision and provide expert installation services. 

Ready to make your property eco-friendly? Contact 21 Degrees today to start your journey toward efficient, sustainable heating.