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£7,500 Grant Available

Cut Your Heating Bills
by 50% or More

Join 3,500+ UK homeowners who've switched to air source heat pumps. Quick installation, proven savings, and expert support from Wales' leading renewable heating specialists.

4.8/5
500+ reviews
MCS
Certified
20+ Yrs
Experience

Free 5-minute estimate • No obligation

Average Annual Savings
£500+
per year on heating bills

  • More than 350% more efficient than gas boilers
  • Works in temperatures as low as -20°C
  • Typical installation in just 2-3 days
  • 20+ year lifespan with minimal maintenance

Prefer to talk? Call us now
01269 833100

Why Choose Air Source Heat Pumps?

The smart, efficient way to heat your home and save money

💰

Save £500+ Annually

Heat pumps are 3-4x more efficient than gas boilers. Average UK households reduce heating costs from £1,200-£1,500 to just £600-800 per year.

Calculate Your Savings
🎁

£7,500 Government Grant

If you own your home and are replacing a gas, oil, or LPG boiler, you qualify for the Boiler Upgrade Scheme. We handle all paperwork.

Check Your Eligibility

Installed in 2-3 Days

No ground digging required. Minimal disruption. Most installations completed in 2-3 days with full commissioning and 7-year warranty included.

View Our Process

What is an Air Source Heat Pump?

An efficient, renewable way to heat your home using warmth from the outside air

An air source heat pump is a low-carbon, renewable heat source and an alternative heating system to conventional gas or oil boilers, that is suitable for a wide range of homes.

They are external units installed to extract thermal energy from the air to provide heating and hot water for your home or business premises.

For every unit of energy it uses to extract heat from the air, it typically outputs three to four times more heat, meaning ASHP efficiency is around 300-400%, which can significantly reduce the cost of your energy bills.

How It Works:

  1. Outdoor unit absorbs heat from the air using a refrigerant
  2. Compressor increases the temperature of that heat
  3. Heat exchanger transfers warmth to your heating system
  4. Result: For every 1kW of electricity used, you get 3-4kW of heat
Air Source Heat Pump Diagram

Air Source Heat Pump System

Air Source Heat Pump Benefits

Low carbon, environmentally friendly Renewable heat source with near-zero emissions
Highly efficient 3-4kW of heat energy returned for every 1kW used
Capable of cooling Active cooling saves time, money and space vs separate AC
Minimal outdoor space required Suitable for most urban properties
Quick to install Little maintenance, long lifespan of 20 years
100% electric, combustion-free Powered entirely by electricity
Eligible for £7,500 Boiler Upgrade Scheme Government grant available for qualifying installations

How Much Does an Air Source Heat Pump Cost?

Transparent pricing based on property size. All prices include full installation, commissioning, and 7-year warranty.

Property Size Full Installation Cost After £7,500 Grant Annual Savings*
Small (2-3 bed) Typical terrace or flat £8,000 - £12,000 £500 - £4,500 £500+
Medium (3-4 bed) Semi-detached or townhouse £10,000 - £14,000 £2,500 - £6,500 £600+
Large (4+ bed) Detached house £12,000 - £18,000 £4,500 - £10,500 £700+

*Compared to typical gas boiler running costs

What's Included in Every Installation

Full system design & heat loss calculation
Air source heat pump unit & hot water cylinder
Complete installation & commissioning
7-year manufacturer warranty
Annual service included (Year 1)
MCS certification for BUS grant eligibility
Get Your Exact Quote in 5 Minutes →

Our online calculator provides accurate costs based on your EPC data—no sales pressure, just instant answers.

Air Source Heat Pump Benefits

Low carbon, environmentally friendly Renewable heat source with near-zero emissions
Highly efficient 3-4kW of heat energy returned for every 1kW used
Capable of cooling Active cooling saves time, money and space vs separate AC
Minimal outdoor space required Suitable for most urban properties
Quick to install Little maintenance, long lifespan of 20 years
100% electric, combustion-free Powered entirely by electricity
Eligible for £7,500 Boiler Upgrade Scheme Government grant available for qualifying installations

Is Air Source Right for Your Property?

Air source heat pumps work in almost any UK property—from flats to detached homes, new builds to Victorian houses.

Have outdoor space

Typically 1-2 meters of wall space for the outdoor unit. Works on walls, patios, or flat roofs.

Want minimal disruption

No ground digging required—most installations complete in 2-3 days.

Replacing gas, oil, or LPG boiler

Automatically qualify for the £7,500 government grant with our MCS-certified installation.

Have decent insulation

EPC rating C or above is ideal. Don't worry—we can advise on cost-effective improvements.

Want heating + hot water

One integrated system for all your home heating needs throughout the year.

Have space for a cylinder

If you have a combi boiler, you'll need space for a hot water cylinder (typical airing cupboard size).

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Not Sure If It's Right for You?

Our free online calculator analyzes your property's EPC data and recommends the best heat pump solution—including whether air source, ground source, or a hybrid system would work best.

Check My Property in 5 Minutes →

Free estimate • No obligation • Instant results

GOVERNMENT GRANT
💷

Get £7,500 Off Your Air Source Heat Pump

The UK government's Boiler Upgrade Scheme covers up to £7,500 of your installation costs

💰
Instant Savings

Grant applied directly to your installation cost

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We Handle Paperwork

Our team submits all grant applications for you

MCS Certified

Automatically qualified with our installations

Simple Eligibility Criteria

You own the property
Replacing gas, oil, or LPG boiler
EPC certificate less than 10 years old
Property in England or Wales

Real Cost Examples:

Small Property
£8k-£12k
£500-£4.5k
Medium Property
£10k-£14k
£2.5k-£6.5k
Large Property
£12k-£18k
£4.5k-£10.5k

How Does Air Source Compare?

Understanding your options: Air source vs. ground source vs. traditional gas boilers

Feature
RECOMMENDED
Air Source Heat Pump
Ground Source Heat Pump Gas Boiler
Installation Cost £8,000 - £18,000 £15,000 - £30,000 £2,000 - £4,000
After £7,500 Grant £500 - £10,500 £7,500 - £22,500 Not eligible
Annual Running Cost £600 - £800 £500 - £700 £1,200 - £1,500
Annual Savings vs Gas £500+ £600+
Installation Time 2-3 days 1-2 weeks 1 day
Space Required Outdoor wall space (1-2m) Garden for ground loop Indoor cupboard
Installation Disruption Minimal Moderate (drilling) Minimal
Efficiency (SCOP) 300-350% 350-450% 85-95%
Carbon Emissions Near zero Near zero High (fossil fuel)
Lifespan 20+ years 25+ years 10-15 years
Noise Level 40-55 dB (quiet) Silent Moderate
Best For Most UK homes Properties with garden space (Being phased out)

Choose Air Source if:

You want the best balance of cost, performance, and quick installation

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Choose Ground Source if:

You have garden space and want maximum efficiency

⚠️

Avoid Gas Boilers:

Higher running costs, carbon emissions, and no government support

What Our Customers Say About Their Air Source Heat Pumps

Real experiences from homeowners who made the switch

"
⭐⭐⭐⭐⭐

"We were skeptical about switching from gas, but Thermal Earth made it so easy. The installation took just 2 days, and our heating bills have dropped from £130/month to just £55. The house is warmer than ever, and it's so quiet we barely notice it's there."

SM
Sarah Mitchell
Cardiff
3-bed semi-detached
Savings: £900/year
"
⭐⭐⭐⭐⭐

"The £7,500 grant made this a no-brainer. After the grant, we paid £3,200 for a complete system that will save us over £600 every year. It's already paid for itself in 5 years, and it'll last 20+ years. Best home improvement we've ever made."

JP
James Patterson
Bristol
4-bed detached
Savings: £650/year
"
⭐⭐⭐⭐⭐

"Thermal Earth designed the system perfectly for our Victorian terrace. They explained everything clearly, handled the grant paperwork, and the installation was completely hassle-free. We love that we're now heating our home with renewable energy."

E&D
Emma & David Chen
London
3-bed Victorian terrace
Savings: £550/year
4.8
Average Rating
⭐⭐⭐⭐⭐
500+
Customer Reviews
3,500+
Installations
20
Years Experience

Frequently Asked Questions

Everything you need to know about air source heat pumps

Modern air source heat pumps operate at 40-55 decibels—quieter than a normal conversation and similar to a modern refrigerator. Most homeowners and neighbors don't notice any noise. We carefully position units to minimize any sound impact, and many manufacturers offer ultra-quiet models specifically designed for UK properties.

Yes, absolutely. Air source heat pumps are designed to work efficiently in the UK climate and continue extracting heat from the air even when temperatures drop to -20°C. In fact, millions of heat pumps operate successfully in Scandinavia where winters are much colder than the UK. Your home will stay warm all winter long.

In most cases, yes. Modern air source heat pumps work with existing radiators, though larger radiators or underfloor heating provides optimal efficiency. During our design phase, we calculate your property's heat loss and recommend whether your current radiators are sufficient or if upgrades would improve performance. Many of our customers keep their existing radiators without any issues.

Most air source heat pump installations are completed in 2-3 days. Day 1 involves installing the outdoor unit and hot water cylinder. Day 2 covers pipework, electrical connections, and system integration. Day 3 (if needed) is for commissioning, testing, and showing you how to operate your new system. Disruption is minimal compared to other heating system installations.

Air source heat pumps require minimal maintenance—typically just an annual service to check refrigerant levels, clean filters, and ensure optimal performance. This is similar to an annual boiler service. We offer maintenance packages, and many customers choose our Comfort Care Plan for peace of mind. Most systems operate trouble-free for 20+ years with basic annual servicing.

Running costs depend on your property size and insulation, but typical UK homes spend £600-800/year on heating and hot water with an air source heat pump, compared to £1,200-1,500 with a gas boiler. That's £500+ in annual savings. Because heat pumps are 300-400% efficient, they use far less energy than traditional heating systems. Our calculator provides your specific estimate based on your property.

If you currently have a combi boiler (no cylinder), yes, you'll need to add a hot water cylinder. If you already have a cylinder, we may be able to use it depending on its age and compatibility. Most installations include a new, well-insulated cylinder optimized for heat pump operation. This actually provides benefits like having hot water stored and ready, even during power cuts.

With proper maintenance, air source heat pumps typically last 20-25 years—significantly longer than gas boilers (10-15 years). The outdoor unit is built to withstand UK weather conditions, and most manufacturers offer 7-year warranties. Many of our 2006 installations are still running perfectly. This longevity makes heat pumps an excellent long-term investment.

Yes, we offer finance options to spread the cost of installation. Even after the £7,500 government grant, you can finance the remaining amount with affordable monthly payments. Many customers find the monthly payment is less than their previous gas bill savings, meaning the system effectively pays for itself from day one. Learn about finance options →

The right size depends on your property's heat loss calculation, which considers insulation, windows, property size, and local climate. Undersizing means inadequate heating; oversizing wastes money. That's why we complete a detailed MCS-compliant heat loss survey for every installation to size your system perfectly. Our online calculator provides initial estimates, which we refine during the design phase.

Still Have Questions?

Our team is here to help you understand if air source is right for your property

Contact Our Team
🏠

Ready to Switch to Air Source Heating?

Get your free, no-obligation estimate in 5 minutes. Our calculator analyzes your property and shows exact costs, savings, and grant eligibility.

4.8/5
Customer Rating
🏆
3,500+
Installations
MCS Certified
Grant Eligible
📅
20 Years
Experience