Heat Pump Installation - Things to Consider Before Buying

Gas Boiler Ban 2025: What’s Really Happening?
Here at iHeat, we want to make sure our customers are fully informed on the intricacies of home heating—especially when it comes to a topic like the ‘gas boiler ban’ that’s caused confusion, panic buying, and a fair share of misinformation.

What Is the Gas Boiler ‘Ban’?

The idea of a ‘ban’ on gas boilers was first proposed in 2019 as part of the UK’s wider net zero emissions strategy. Originally set for 2025, it has since been pushed back to 2035, following industry feedback and concerns around readiness and affordability.

Here’s what’s actually true as of April 2025:

• The ‘ban’ only applies to new build homes — and now won’t take effect until 2035, not 2025.

• You can still install gas boilers in existing homes — even beyond 2035.

• There’s no law or financial penalty forcing you to remove or replace a working gas boiler.

• Heat pumps are not mandatory. You are not required to switch unless you want to.

So, no — you don’t need to rip out your gas boiler tomorrow.

One of the most common myths is that everyone will be forced to switch to a heat pump, which simply isn’t true.

What Is an Air Source Heat Pump?

An air source heat pump (ASHP) extracts heat from the air outside and uses it to warm your home and hot water. It works in a similar way to a fridge, but in reverse, using electricity to power the heat transfer.

They’re energy efficient and low-carbon — especially if powered by renewable electricity — but they’re not the perfect solution for every property.

Disadvantages of Heat Pumps (As of 2025)

High Upfront Costs

Installation costs for a typical ASHP system can range from £8,000 to £14,000+, depending on the property. This can make heat pumps feel financially out of reach, even with support schemes like the Boiler Upgrade Scheme (BUS), which currently offers £7,500 grants in England and Wales.

Higher Running Costs

Heat pumps run on electricity — and while more efficient, electricity still costs significantly more than gas in the UK. This means some users may see higher bills, especially in older or poorly insulated homes.

Lower Flow Temperatures

ASHPs heat water to around 45–55°C, compared to 70–80°C from a combi boiler. This may require larger radiators or underfloor heating to achieve the same level of comfort.

Noise

While much quieter than older models, outdoor units still emit a low-level hum. This may not bother everyone, but it’s worth noting for homes in quieter areas.

Insulation Matters

Heat pumps work best in well-insulated homes. If your property lacks proper loft or wall insulation, you could lose heat quickly — making the system less effective and pushing up running costs.

Winter Efficiency Drops

Modern units can operate in temperatures as low as -20°C, but they become less efficient as the mercury drops. In colder parts of the UK, backup heating might still be needed.

Installation Rules

You may not need planning permission, but heat pumps must follow certain rules, including:

• Installed at least 1 metre from the property boundary

• Must be placed on a suitable surface

• Must meet maximum noise limits

• Can only be used for heating/cooling purposes

Verdict: Do You Need to Switch?

No, you don’t need to switch.

While heat pumps are a great low-carbon option for many, they’re not mandatory — and they’re not ideal for every home.

If your current boiler is working fine, there’s no need to replace it. If it’s on its way out, a new energy-efficient combi boiler might still be the better fit — especially if your home isn’t heat pump-ready.

Getting a New Boiler With iHeat

We stock a wide range of A-rated combi boilers designed to maximise efficiency and minimise space. With next-day installation, flexible finance (including 0% APR) and no hidden fees, we make the upgrade process simple.

• Fixed online quote

• Installed by Gas Safe engineers

• Smart thermostats and warranties included

Get a quote