How It Works

Heat Pumps Explained

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Works like a fridge in reverse

A heat pump extracts warmth from outdoor air — even in temperatures as low as -15°C — and uses it to heat your home and hot water. It moves heat rather than generating it.

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Up to 4× more efficient than gas

For every 1 unit of electricity a heat pump uses, it delivers 3–4 units of heat. That's a Seasonal Coefficient of Performance (SCOP) of 3–4, versus a gas boiler's 85%.

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Consistent comfort all year round

Heat pumps run at lower flow temperatures than gas boilers, delivering steady, even warmth throughout your home rather than rapid on/off cycles.

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Compatible with existing systems

Modern heat pumps work with most radiator systems and are ideal with underfloor heating. We'll assess your home and design a system that works from day one.

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Cut your carbon footprint

A heat pump can reduce your home's heating carbon emissions by up to 80% compared to a gas boiler — and the grid gets greener every year, improving that figure further.

Heat Pump vs Gas Boiler

300–400%

Heat pump efficiency (SCOP)

~85%

Typical gas boiler efficiency

20 yr

Heat pump lifespan

10–15 yr

Gas boiler lifespan

Heat pumps don't burn fuel — they transfer heat. This makes them far more efficient, much longer-lasting, and able to run on renewable electricity for near-zero carbon heating.

MCS Certified Installation

Every Energize UK heat pump installation is MCS certified — a requirement to claim the £7,500 BUS grant and access government incentives. We handle all paperwork and certification on your behalf.

Government Funding

Save £7,500 with the Boiler Upgrade Scheme

The BUS grant is one of the most generous home energy incentives available. As your MCS accredited installer, we submit your voucher application before any work begins — so the grant is confirmed before you commit.

Check your eligibility

Your home must be in England or Wales, currently gas, oil, or electric heated, with no heat pump previously installed.

We apply for your voucher

We submit the BUS application on your behalf before installation begins. You receive confirmation of the £7,500 before committing.

Installation to MCS standard

We carry out the full design, supply and installation of your heat pump system, ensuring everything is correctly commissioned to MCS requirements.

Grant deducted from your bill

We redeem the voucher directly — you simply pay the balance after the £7,500 is applied. No claiming back, no waiting for a rebate.

Check Your Eligibility →

£7,500

Air Source Heat Pump Grant

Eligibility Checklist

You own your home (homeowners only)

Property is in England or Wales

Currently heated by gas, oil, or electric

No heat pump previously installed at the property

Grant amounts are set by the UK Government and subject to change. Eligibility criteria apply. Contact us for an assessment specific to your property.

Our Heat Pump Partners

Brands We Install

We're approved installers for leading heat pump brands, giving you access to the best technology with full manufacturer support.

Grant Aerona³ R290

The Grant Aerona³ is one of the UK's most trusted heat pumps, designed specifically for British weather. As G1 approved installers we're authorised to supply and install the full Aerona range.

R290 (propane) refrigerant — ultra low global warming potential

Available in 4kW–17kW to suit any home

Works efficiently down to -20°C

7-year manufacturer warranty

UK manufactured and supported

Midea

Midea is one of the world's largest HVAC manufacturers. The M-Thermal series delivers outstanding efficiency, whisper-quiet operation and smart controls — at a highly competitive price point.

Industry-leading SCOP ratings for low running costs

Ultra-quiet operation from 39dB

Smart app control and scheduling

10-year manufacturer warranty

Available in a range of outputs for homes and commercial

Daikin Altherma

As a Daikin Sustainable Home Expert we're certified to install the Altherma range — Daikin's award-winning air source heat pump system trusted across Europe and the UK.

Daikin Sustainable Home Expert status

Class-leading energy efficiency (SCOP up to 5.07)

Whisper-quiet, compact outdoor unit

Works in temperatures as low as -25°C

Full smart home and app integration

What You Get

What's Included in Your Installation

We handle everything from survey to sign-off. No hidden extras, no surprises.

Full heat loss assessment & system design

Supply of heat pump unit

Hot water cylinder (where required)

All pipework & plumbing

Electrical connection & commissioning

BUS grant application (we handle it)

MCS installation certificate

Full system handover & training

Aftercare & ongoing support

0% VAT on the full installation

Free survey & estimate

We visit your home to assess heat loss, existing pipework and the best location for the unit. You'll receive a detailed, fixed-price quote.

Grant confirmed before you commit

We submit your BUS voucher application before any work starts. You see the grant confirmed in writing before giving the go-ahead.

Installation & commissioning

Our team installs and commissions your system to MCS standards. Most residential installations take 4–5 days.

Our Installations

Heat Pumps We've Installed

Recent heat pump installations across Hampshire and the south of England.

Get a Quote

Request a Heat Pump Quote

Fill in a few details about your home and we'll get back to you with a tailored quote.

FAQ

Common Questions

How does an air source heat pump work?

An air source heat pump extracts heat from the outside air — even at temperatures as low as -15°C — and uses it to heat your home and hot water. It works like a refrigerator in reverse: refrigerant absorbs heat from the air, compresses it to increase its temperature, and transfers that warmth into your heating system. Because it moves heat rather than generating it, a heat pump delivers 3–4 units of heat for every 1 unit of electricity used.

Can I replace my gas boiler with a heat pump?

In most cases, yes. If you have a regular boiler (with a hot water tank), the switch is relatively straightforward. If you have a combi boiler, you'll need space for a hot water cylinder — we'll advise on the best location during your survey. We may also recommend radiator upgrades in some rooms, though this is often less work than people expect.

Are heat pumps suitable for the UK climate?

Absolutely. Modern heat pumps are designed to work efficiently in cold, damp climates and can extract useful heat from the air down to around -15°C. The UK's relatively mild winters actually make it one of the better climates for heat pump performance. Hundreds of thousands of UK homes already use them successfully.

How much does a heat pump cost to install?

Heat pump installations typically range from £7,000 to £13,000 depending on your home size, system requirements and whether any radiator or pipework upgrades are needed. After the £7,500 BUS grant, many homeowners pay between £2,000 and £6,000 — often comparable to a full boiler replacement. We'll give you a fixed price after your free survey with no hidden extras.

Do I need to upgrade my radiators?

Not always. Heat pumps run at lower flow temperatures (typically 45–55°C vs. 70–80°C for a gas boiler), so some older, undersized radiators may need upgrading for optimal performance. During our free survey we'll calculate the heat requirement for each room and advise on any changes needed. Underfloor heating works particularly well with heat pumps and requires no upgrades.

Will a heat pump work in a poorly insulated home?

Heat pumps work in all types of homes, including older properties. The key is correct sizing — a well-designed system will keep your home warm regardless of insulation level. That said, improving insulation will reduce running costs and may allow a smaller, cheaper unit. We carry out a full heat loss calculation to ensure the system is correctly sized for your home.

How much does a heat pump cost to run?

Running costs depend on your home's heat loss, the system's efficiency (SCOP), and your electricity tariff. Most households see lower overall energy bills than with a gas boiler, particularly if they're on a heat pump-friendly tariff. Because heat pumps are 3–4× more efficient than gas boilers, even with electricity being more expensive per kWh, the total cost can be lower — and the gap narrows further with solar panels.

What's the £7,500 BUS grant and am I eligible?

The Boiler Upgrade Scheme (BUS) is a UK Government grant that reduces the upfront cost of an air source heat pump by £7,500. To qualify, you must own your home in England or Wales, currently be heated by gas, oil or electric, and not have previously received a BUS grant at the property. We handle the entire application on your behalf and the grant is confirmed before any work begins.

How long does installation take?

Most residential heat pump installations take 2–3 days. This includes the outdoor unit, indoor cylinder (if required), pipework, electrical connection and commissioning. We aim to cause minimal disruption and leave your home clean and tidy. You'll have full heating and hot water before we leave.

Can I pair a heat pump with solar panels?

Absolutely — solar and heat pumps are a natural combination. Your panels generate free electricity during the day, which your heat pump can use to heat your home or hot water. With a battery, you can store surplus solar to power your heat pump in the evening. Many of our customers install both together for maximum savings and carbon reduction.

Air Source Heat Pumps for South of England Homes