Heat Pump vs Gas Boiler: Which Is Better in 2025? | Limitless Energy Swansea
- Robert Harvey
- 13 hours ago
- 3 min read
Looking to lower your energy bills and reduce your carbon footprint in Swansea or South Wales? As the UK moves toward net zero, more homeowners are asking: Should I upgrade to a heat pump or stick with my gas boiler?
At Limitless Energy, we’ve been helping families and businesses in Swansea, Neath Port Talbot, Brecon, Bridgend, Cardiff, and Carmarthenshire make the switch to cleaner, more efficient energy solutions for over a decade. With a 5-star reputation on Google and a team of fully qualified, trustworthy engineers, we’re proud to lead the way in renewable energy installations in South Wales.
Here’s everything you need to know when choosing between a heat pump and a gas boiler in 2025.
🔥 What's the Difference Between a Heat Pump and a Gas Boiler?
Gas Boiler: A traditional heating system that burns gas to heat your home and hot water. Familiar and fast, but powered by fossil fuels.
Heat Pump: A highly efficient, low-carbon alternative that extracts heat from the air (air source) or ground (ground source) using electricity.
Both systems keep your home warm—but how do they compare in cost, efficiency, and long-term value?
💷 Running Costs & Efficiency
Gas Boilers
Up to 90% efficient
Average annual bills: £900–£1,200
Uses gas, which is still cheaper per kWh but prone to price spikes and global political influences
Heat Pumps
300–400% efficiency
Average bills: £700–£1,000 (in well-insulated homes)
Powered by electricity—pair with solar panels for extra savings. Find out more about solar panels here.
Use battery storage with off peak charging rates, or even just smart utility tariffs, to gain even further savings against a gas boiler.
✅ Local Tip: Many of our customers in Swansea are seeing major reductions in bills after switching to a heat pump combined with solar PV and battery storage.
💰 Up front Installation Costs
Gas Boiler Installation
£2,000–£3,500 installed
Heat Pump Installation in South Wales
£9,000–£17,000 (air source) without the grant. £1,500 or £9,500 with the grant.
Eligible for the Boiler Upgrade Scheme, which provides up to £7,500 off—we’ll help you claim it! Find out more about the Boiler Upgrade Scheme here.
✅ At Limitless Energy, we offer free home assessments and handle the grant application process for you.
🌍 Environmental Impact
Gas Boilers: Emit around 2.2 tonnes of CO₂ per household, per year.
Heat Pumps: Up to 70% lower emissions, even more when powered by green electricity or solar PV.
If you want to make your home greener and future-proof your heating system, heat pumps are the clear winner.
❄️ Performance in Cold Weather
Today’s air source heat pumps work efficiently down to -15°C or lower, making them a reliable choice even during a Welsh winter. For older or poorly insulated homes, we’ll assess whether you need upgraded radiators or insulation.
Future Proofing & Regulations
From 2025, gas boilers will be banned in new builds in Wales.
Heat pumps are supported by UK government policies and are key to reaching net zero.
Choosing a heat pump now means you’re ready for the future—no sudden changes or compliance issues later.
⚖️ Heat Pump vs Gas Boiler: At a Glance
Feature | Gas Boiler | Heat Pump |
Efficiency | 90% | 300–400% |
Running Costs | £900–£1,200 | £700–£1,000 |
Upfront Cost | £2,000–£3,500 | £9,000–£17,000 (grants available) |
CO₂ Emissions | High | Low |
Future-Proof | ❌ | ✅ |
Works in Cold Weather | ✅ | ✅ |
🏡 Why Choose Limitless Energy?
✅ Over 10 years of experience installing renewable energy systems across Swansea and South Wales
✅ 5-star rated by local homeowners
✅ Specialists in heat pumps, solar PV, battery storage, and EV chargers
✅ Fully qualified and highly trusted team
✅ We handle all grant paperwork for the Boiler Upgrade Scheme
📞 Get a Free Heat Pump Quote Today
Whether you’re replacing an old gas boiler or a full renewable energy install in Swansea, Neath Port Talbot, Brecon, Bridgend, Cardiff, or Carmarthenshire, we’re here to help you save money and go greener.
📞 Call us on 01792 361638 or click below to book your free energy consultation:
👉 Get a Free Heat Pump Quote in Swansea https://www.limitlessenergy.org/heat-pumps 👉 Learn More About Our Renewable Energy Services Services | Limitless Energy
Limitless Energy – Trusted renewable energy installers in Swansea and South Wales. Helping you heat smarter, live greener, and save more in 2025 and beyond.