How Long Does a Heat Pump Last?

Last Updated on July 7, 2025

Thinking about upgrading your heating system to a more energy-efficient option? One of the most common questions from UK homeowners and landlords is: how long does a heat pump last? 

If you’re investing in an air source heat pump, knowing its expected lifespan—and how to maximise it is crucial.

In this article, we’ll explore the average lifespan of air source heat pumps, what factors affect their durability, how they compare to gas boilers, and why choosing the right installer and maintenance plan can significantly impact their longevity.

What Is the Average Lifespan of an Air Source Heat Pump in the UK?

On average, air source heat pumps last between 15 and 20 years when properly maintained. According to the Energy Saving Trust, many models can last even longer if regularly serviced and installed to a high standard.

The UK Government’s Department for Energy Security and Net Zero (DESNZ) also states that with proper care, heat pumps are a long-term, low-carbon heating solution built to last decades.

What Affects the Lifespan of a Heat Pump?

Several factors influence how long your heat pump will last:

• Quality of installation
  A poorly installed unit is more likely to experience faults and operate inefficiently. The Microgeneration Certification Scheme (MCS) recommends always using an MCS-accredited installer to ensure long-term reliability.
  
• Regular maintenance
  According to Ofgem, regular servicing—typically once a year—is essential to keep your system efficient and compliant with warranty requirements.
  
• System usage and workload
  Properties with poor insulation will force the heat pump to work harder, potentially reducing its lifespan. A heat loss calculation should always be done before installation.
  
• Local climate and external conditions
  While air source heat pumps perform well even in colder UK climates, consistent exposure to extreme weather can impact outdoor components.
  
• Type of heat pump
  Ground source heat pumps tend to last longer than air source heat pumps (often 20–25 years), but they’re more expensive and invasive to install.

Do Heat Pumps Last Longer Than Gas Boilers?

Yes, air source heat pumps generally outlast gas boilers. While a traditional gas boiler lasts 10–15 years, heat pumps routinely last 15–20+ years with proper care.

This makes them a smarter long-term investment—especially when combined with government incentives such as the Boiler Upgrade Scheme, which offers £7,500 towards installation.

How Can You Extend the Life of Your Heat Pump?

Boost your heat pump’s longevity by following these expert tips:

Annual Servicing

Have your system inspected by a qualified technician every year to clean filters, check refrigerant levels, and ensure optimal performance.

Clean Surroundings

Keep the external unit clear of leaves, snow, and debris to maintain airflow and prevent corrosion.

Smart Thermostat Use

Avoid constantly adjusting the temperature. Instead, let your system maintain a steady level to reduce strain.

High-Quality Insulation

Improve your EPC rating with insulation upgrades—loft, cavity wall, and double glazing—to reduce load on your system.

Use MCS-Certified Installers

Choosing a reputable, certified installer ensures proper system sizing and configuration, which directly impacts performance and durability.

What Are the Signs Your Heat Pump Is Nearing the End of Its Lifespan?

Even the best systems don’t last forever. Watch out for:

• Reduced efficiency or higher bills
  
• Excessive noise or unusual sounds
  
• Inconsistent indoor temperatures
  
• Frequent repairs or breakdowns

If your unit is over 15 years old and showing these signs, it may be time to consider a replacement.

Are Heat Pumps Worth It in the Long Run?

Absolutely. While upfront costs can be higher than traditional heating systems, the return on investment (ROI) is significant:

• Save up to £1,500 a year on energy bills if replacing electric, oil, or LPG heating systems.
  
• Reduce carbon emissions by up to 70% compared to a conventional boiler system.
  
• Increase your property’s EPC rating, making it more attractive to buyers or tenants.
  
• Benefit from low-maintenance, future-proof technology that aligns with the UK’s net-zero targets.

Ready to Future-Proof Your Property?

Get a Free Air Source Heat Pump Quote from Eco Happy Today

With rising energy costs and mounting pressure to reduce carbon emissions, now is the perfect time to invest in a high-efficiency heating system that lasts 15–20+ years.

At Eco Happy, we only work with MCS-accredited installers, use premium-grade heat pump systems, and help you unlock government funding to reduce your upfront costs. 

Our team will guide you through the entire process—from heat loss calculations to final installation.Whether you’re a homeowner or a landlord, we’re here to help you save money, cut carbon, and stay warm for decades to come.