When searching for a cosy and warm home, homeowners face a new and potentially important decision to make. Choosing between the traditional reliability of gas boilers and the innovative efficiency of heat pumps. 

This choice is not just about adjusting thermostats or tweaking temperature settings; it’s a significant decision that resonates with our daily comfort, financial well-being, and environmental consciousness. 

As the world increasingly focuses on sustainable living and energy efficiency, the debate of ‘heat pumps vs. boilers’ has moved from the pages of technical manuals to the forefront of household discussions. 

Which Is The Best Option For Homeowners?

In this expert guide, we’ll dive in depth, looking at  both heating systems, unraveling their pros and cons, and revealing why, in the dynamic world of home heating, gas boilers might still be holding the ace card. 

Whether you’re a homeowner planning an upgrade, a curious environmentalist, or just someone interested in the future of home heating, this article promises to shed light on this heated debate, guiding you through a journey of discovery and informed decision-making.

What Is A Heat Pump?

A heat pump is a heating and cooling system designed to transfer heat from one place to another. It works by extracting heat from the air, ground, or water sources outside the home and transferring it inside to provide heating or vice versa for cooling. Heat pumps use refrigerant and a compressor to absorb heat from the outdoor environment and then release it into the indoor space at a higher temperature.

There are a few different types of heat pump, the most popular types in the UK being Air Source heat pumps, Ground Source heat pumps and hydrogen heat pumps. This article from easy boilers can give you a more in depth understanding of the different types of heat pump available and the benefits they have.

 Heat pumps are considered an eco-friendly heating solution as they utilize renewable energy sources, reduce reliance on fossil fuels, and produce fewer carbon emissions compared to traditional heating systems like boilers. 

They offer energy-efficient heating and can also provide cooling during warmer months, making them versatile and environmentally conscious heating and cooling options for homes in the UK

Heat Pump Vs Boiler Cost Comparison

The cost comparison between a heat pump and a boiler in the UK involves various considerations. Generally, heat pumps tend to have higher upfront costs compared to boilers. On average, a heat pump installation in the UK can range from £8,000 to £18,000, depending on factors such as the type of heat pump (air source or ground source), the size of the property, and the complexity of the installation.

Conversely, boilers typically have lower initial costs, averaging between £1,500 to £3,500 for a new installation. However, it’s important to note that the operational costs of heat pumps are often lower in the long run due to their high energy efficiency, resulting in potential savings on heating bills compared to traditional boilers.

Finally, while boilers use gas or oil as fuel, which can be subject to price fluctuations, heat pumps utilize renewable energy sources such as air or ground heat, offering a more stable and potentially environmentally friendly heating solution.

When considering the cost comparison between a heat pump and a boiler, it’s essential to factor in not only the upfront installation expenses but also the long-term operational efficiency, potential savings on energy bills, and the environmental impact of each heating system.

The Big Factor – Efficiency & Running Costs

Heat pumps are known for their high energy efficiency. Air-source heat pumps operate with an efficiency of around 300%, and ground-source heat pumps can reach up to 400% efficiency. 

In contrast, modern gas boilers generally operate between 90%-94% efficiency. Despite this, the current energy prices mean that the efficiency of heat pumps does not always translate into lower running costs for the consumer. 

In some cases, the cost savings generated by a heat pump over an entire year can be minimal compared to using a gas boiler​​​​.

Wider World Environmental Impact

When comparing the environmental impact of heat pumps and boilers, heat pumps generally have a lower environmental footprint. Heat pumps work by extracting heat from the air, ground, or water sources, making them highly efficient and renewable energy-based systems. They don’t burn fossil fuels on-site, resulting in reduced greenhouse gas emissions during operation compared to boilers.

Boilers, especially those reliant on fossil fuels like gas or oil, emit carbon dioxide and other pollutants when burning fuel to generate heat. This contributes to greenhouse gas emissions, which are significant contributors to climate change and air pollution.

Heat pumps, on the other hand, use renewable energy sources and can be more energy-efficient, offering a more sustainable heating solution. 

They have the potential to massively reduce carbon emissions and reliance on finite fossil fuels, aligning with efforts to mitigate climate change and promote cleaner air quality.

However, it’s important to note that the overall environmental impact of a heat pump versus a boiler can also depend on factors such as the type of energy used to power the heat pump and the efficiency of the boiler. Incorporating renewable energy sources to power both systems further enhances their environmental benefits.

What Is The Servicing & Lifespan Of Pumps & Boilers?

 Boilers typically require annual servicing to ensure they operate efficiently and safely. Maintenance includes checks on the burner, controls, and other components. Regular servicing helps prevent breakdowns and ensures the boiler functions optimally.

 Heat pumps generally require less frequent servicing, often recommended every 2-3 years. Servicing involves inspecting the system, checking refrigerant levels, and ensuring all components work correctly. However, regular checks on the heat pump’s filters and outdoor unit can help maintain its efficiency.

The average lifespan of a well-maintained boiler ranges from 10 to 15 years. However, this can vary depending on the type of boiler, usage, and maintenance practices. Regular servicing can prolong a boiler’s lifespan.

Heat pumps typically have a longer lifespan compared to boilers, ranging from 15 to 20 years or more with proper maintenance. Their durability and fewer moving parts contribute to their extended lifespan.

Both systems benefit from regular maintenance, which not only ensures efficient operation but also extends their lifespan. However, heat pumps often have a longer life expectancy compared to boilers, making them a more durable long-term heating solution.

Do You Need To Take In Climate Considerations?

Heat pumps are most efficient in moderate climates. In extremely cold climates, their efficiency may decrease, and supplemental heating might be required. 

On the other hand, modern oil boilers are designed for usage in extremely cold locations and can be a reliable choice in such conditions​​​​.


While heat pumps offer high efficiency and environmental benefits, their higher upfront costs and current energy price dynamics can make gas boilers a more cost-effective option for many. 

Gas boilers provide reliable heating with lower initial investment, though they have a shorter lifespan and higher environmental impact compared to heat pumps.

Ultimately, the choice between a heat pump and a gas boiler depends on individual circumstances, including budget, environmental priorities, and local climate conditions.