Some advice from Latent Heat Edinburgh
These are a few things you can do to prevent any inconvenience.
If you’re a homeowner in Edinburgh weighing up a heating system upgrade, you’ve likely asked yourself:
“Should I stick with a gas boiler, or switch to a heat pump?”
As heating engineers based in Edinburgh, we can do either
If you are replacing a boiler now, it is likely that your boiler is around twenty years old. The steps you take now are for at least the next 20 years, time to start thinking ahead….
With energy bills, carbon footprints, and government regulations all changing fast, now is the perfect time to look at the pros and cons of gas boilers vs air source heat pumps – especially for homes in Edinburgh and the Lothians.
At Latent Heat Edinburgh, we install high-performance air source heat pumps tailored to Scotland’s climate. Here’s a breakdown to help you decide what’s best for your home, budget and lifestyle.
Why Compare These Two Systems?
Gas boilers have been the standard in UK homes for decades. But with the push toward net zero and rising gas prices, air source heat pumps are becoming the future-proof and eco-friendly option.
Let’s explore how the two stack up in terms of:
- Cost
- Efficiency
- Carbon impact for future generations
- Suitability for Edinburgh homes
- Government support
1. Efficiency: Which System Delivers More Heat for Your Money?
| System | Typical Efficiency | What That Means |
| Gas Boiler | 90 – 94% | You get around 0.9 kWh of heat for every 1 kWh of gas burned. |
| Air Source Heat Pump | 300 – 400% | You get 3 – 4 kWh of heat for every 1 kWh of electricity used. |
Verdict:
Air source heat pumps are far more efficient in energy terms — especially when paired with renewable electricity (e.g., green tariffs or solar panels).
2. Upfront & Running Costs
Gas Boiler:
- Upfront Cost: £3,500 – £4,500, depending on what is required
- Fuel: Gas (subject to volatile prices) as at May 2025 a Standard Variable Tariff is around 6.92p per kWh and a daily Standard Charge of 32.78p per day. (Source EDF).
Air Source Heat Pump:
- Guide overall Cost: £15,000 – £17,000 (typical cost – varies by property and any additional requirements)
- Less Government Grant – at least £7,500 💡
- Government loan spread over agreed number of years £7,500 (Currently interest free – see Home Energy Scotland website
- Find funding | Home Energy Scotland
- Fuel: Electricity (can be offset with solar or green tariffs)
- 💡 Home Energy Scotland Grants offer up to £7,500 (or £9,000 for may rural homes) towards heat pump installations.
Our Verdict:
Gas boilers may be cheaper initially, but an air source heat pump offers access to government grants – especially attractive for Edinburgh homeowners making long-term energy investments.
3. Carbon Emissions
| System | Carbon Impact |
| Gas Boiler | High – burns fossil fuel directly |
| Heat Pump | Low – uses electricity, especially clean when on a green tariff or with solar panels. Batteries can also be part of the mix. |
Verdict:
Air source heat pumps are the environmentally responsible option – ideal for households looking to reduce their carbon footprint and future-proof against any stricter climate regulations.
4. Suitability for Edinburgh Homes
Gas Boiler:
✅ Works with existing radiators
✅ Compact installation
❌ Relies on fossil fuel network
Heat Pump:
✅ Perfect for well-insulated homes
✅ Works with radiators or underfloor heating
✅ Can extract heat even in -15°C
✅ Ideal for homes switching from Gas, Oil, LPG, or Electric
❌ May require radiator upgrades
Edinburgh Consideration:
Many Edinburgh homes, especially post-war builds, benefit from added insulation before switching to a heat pump. Home Energy Scotland can assess and advise accordingly on upgrades as part of your installation.
5. Long-Term Viability
| Factor | Gas Boiler | Heat Pump |
| Ban on New Installations | Phasing out from 2025 (UK) | Supported long-term |
| Energy Source | Finite fossil fuel | Renewable electricity |
| Government Support | None | Grants available |
| Future-Proofed? | ❌ No | ✅ Yes |
Verdict:
If you’re planning to stay in your home long-term, a heat pump is a more future-ready choice. Many Edinburgh buyers are already looking for homes with sustainable upgrades.
Summary: Heat Pump vs Gas Boiler at a Glance
| Feature | Gas Boiler | Air Source Heat Pump |
| Initial Cost | Lower | Higher (grants available) |
| Running Cost | Rising | Rising, but much cheaper ASHP tariffs are available |
| Efficiency | 90 – 94% | 300 – 400% |
| Carbon Emissions | High | Very Low |
| Hot Water Supply | ✅ Yes | ✅ Yes |
| Government Funding | ❌ No | ✅ Yes (in Scotland) |
| Suitable for Edinburgh? | ✅ Yes (short term) | ✅ Yes (long term) |
So, Which Should You Choose?
Choose a Gas Boiler if:
- You’re replacing a broken boiler short-term
- You’re in a poorly insulated property with no plans to upgrade
- You live in a tenement
- You’re not ready for a full heating system switch just yet
Choose a Heat Pump if:
- You want lower carbon emissions and running costs
- You’re planning long-term home improvements
- You want access to government grants
- You’re upgrading insulation and heating together
Speak to Edinburgh’s Local Heat Pump Experts
At Latent Heat Edinburgh, we don’t just install air source heat pumps – we advise, design, and support you throughout your low-carbon journey. We’ll give you honest advice about whether your home is heat pump-ready and help with Home Energy Scotland funding applications.
📞 Call: 0131 445 1457
📩 Email: [email protected]
🌐 Visit: www.latentheat.co.uk
Book a free 1 hour consultation today and discover if a heat pump is the smarter move for your Edinburgh home.