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The Boiler Upgrade Scheme (BUS) is a government initiative to help UK homeowners switch to low-carbon heating.

Greenline

Our unbeatable GreenLine
Air Source Heat Pump

See the tech specsDownload Brochure

AIR SOURCE HEAT PUMP

The Greenline Series

Our flagship air source heat pump range, engineered specifically for UK homes. Featuring next-generation R290 natural refrigerant for maximum efficiency and minimal environmental impact.

Up to 400% Efficient

R290 Natural Refrigerant

Only 40dB

7 Year Warranty

01

R290 Natural Refrigerant

Ultra-low GWP (Global Warming Potential) of just 3, compared to 675+ for traditional refrigerants. Future-proof technology.

02

Up to 400% Efficiency

Operating at just 40-46dB, quieter than a refrigerator. Perfect for urban installations near neighbours.

03

Whisper Quiet Operation

Compared to traditional immersion heaters or boiler-heated cylinders. Significant reduction in running costs.

04

Works in
Extreme Cold

Continues heating efficiently down to -20°C ambient temperature. Proven in Scandinavian winters.

05

Smart WiFi Controls

Control your heating from anywhere with our smartphone app. Set schedules, monitor usage, and optimise efficiency.

06

7-Year
Warranty

Comprehensive parts and labour warranty for complete peace of mind. Extended warranties available.

01

Smart Heat from Waste Air for Less

Ecocent doesn’t create heat — it moves it. By extracting renewable heat from indoor air, it produces far more heat energy than it consumes, delivering significantly lower running costs than traditional cylinders and immersion heaters.

02

Improves Air Quality & Removes Condensation

Ecocent actively removes moisture, humidity and condensation from your home while heating your water. This helps improve indoor air quality and supports compliance with modern housing standards including Awaab’s Law.

03

Complete Hot Water Solution

Ecocent is a fully integrated heat pump hot water system with built-in intelligence, smart controls and professional installation. It delivers reliable hot water up to 60°C without relying on expensive immersion heating.

04

Designed Specifically for UK Homes

Engineered around UK housing, water usage and climate conditions, Ecocent delivers reliable performance, quiet operation and long-term efficiency across retrofit homes, apartments and new builds.

HOW IT WORKS

How Greenline heats your home

How Greenline heats your home

Absorb heat

The outdoor unit absorbs heat energy from the air, even when temperatures are below freezing.

Compress & amplify

A compressor concentrates this heat, raising its temperature significantly using R290 refrigerant.

Transfer to home

The heat is transferred to your central heating system via a heat exchanger.

Distribute warmth

Hot water circulates through your radiators or underfloor heating, warming your home.

Greenline delivers 3-4 units of heat for every 1 unit of electricity used

TECHNICAL Infrastructure

What's under the bonnet

With exceptional efficiency lower running costs — the GreenLine is designed as a complete heating system, not just a standalone unit.

Quiet, inverter-driven performance

No need to upgrade existing radiators in many cases

On Averge 4 units of Heat for every 1 unit of electricity used

Developed to reduce energy bills when paired with a well-designed system

Get a free assessment

Sustainable heating that actually fits your home

Sustainable heating that actually fits your home

Sustainable heating that actually fits your home

Sustainable heating that actually fits your home

Sustainable heating that actually fits your home

PERFORMANCE & COMPLIANCE

A smarter way to heat the world we share

Designed with the environment in mind, GreenLine air source heat pumps reduce reliance on fossil fuels by using renewable energy from the air to heat homes more efficiently and responsibly.

envrionment

Natural
Refrigerant

GreenLine uses R290 as a refrigerant, R290 (propane) is a natural refrigerant with a Global Warming Potential (GWP) of just 3, compared to 675+ for older refrigerants. This makes Greenline genuinely eco-friendly. R290 is also more efficient at lower temperatures, perfect for UK winters.

Net Zero

75°C

Can heat up to 75°C as to majority of heat pumps only heat up to 45°C/50°C

British Engineering

70%

Cleaner than traditional gas boilers with lower carbon emissions

Sound

CO2

Around 1.4 tonnes CO2 saved per home annually

SYSTEM INTEGRATION

Types of installations

GreenLine extracts renewable heat from the air and upgrades it for use inside your home, delivering far higher efficiency with far lower running costs.

01/

Traditional
Installation

GreenLine R290 heat pumps can be integrated into a traditional heating system, including buffer tanks and hot water cylinders, to suit individual home layouts and requirements. System configuration is professionally designed to ensure safe and reliable operation.

02/

Hydronic Module Installation

The GreenLine R290 Hydronic Module simplifies installation by integrating essential system components, helping reduce installation time while supporting heating, cooling and hot water. A compatible hot water cylinder is required.

03/

Thermal Store Installation

An integrated Thermal Store combining buffering and hot water storage in one unit, designed to simplify installation and support efficient system performance.

Looking for more information?
Explore the specifications below or get in touch with our team.

Get in Touch

PRODUCT RANGE

A Greenline model for every home

GreenLine R290 range is available in multiple sizes to suit different homes and heating needs. Every model delivers the same quiet operation, high efficiency and reliable performance and is professionally sized to ensure long-term comfort.

Model

300 22kW

Larger properties, multiple dwellings and/or swimming pool

More info
The 22kW R290-300 delivers high-capacity heating for expansive homes, multi-dwelling developments, and specialist applications including swimming pools.
Enquire about the 300 model

Model

200 15kW

Ideal for homes with
5/4 bedrooms

More info
The 15kW R290-200 offers superior, energy-efficient performance for spacious homes with five or more bedrooms.
Enquire about the 200 model

Model

100 9kW

Perfect for up to
3 bedroom houses

More info
The 9kW R290-100 model delivers powerful, eco-friendly performance suitable for homes with up to four bedrooms.
Enquire about the 100 model

Specifications

Engineered Performance

Real-world performance matters. These technical specifications demonstrate Ecocent’s efficiency, reliability and suitability for demanding residential and commercial applications.

Technical specifications

Take a
deeper look

Download the Greenline brochure for a deeper look...

Download brochure
GreenLine R290
200 15kW

Ideal for homes with 5/4 bedrooms

The 15kW R290-200 offers superior, energy-efficient performance for spacious homes with five or more bedrooms.

Enquire About 200 Model
Heating Performance (R290-300)

Condition: Ambient 7/6°C — Water 30/35°C

Capacity
8.00 ~ 22.00 kW
Power Input
1.60 ~ 6.90 kW
Current Input
7.00 ~ 30.30 A
Cooling Performance (R290-300)

Condition: Ambient 35/24°C — Water 12/7°C

Capacity
4.20 ~ 15.00 kW
Power Input
1.80 ~ 7.30 kW
Current Input
8.30 ~ 31.20 A
Hot Water Performance (R290-300)

Condition: Ambient 20/15°C — Water 15/55°C

Capacity
8.00–22.00 kW
Power Input
1.60–6.90 kW
Current Input
7.00–30.30 A
Acoustics / Noise Levels
Sound Pressure Level (1m)
48 dB(A)
Sound Power Level (EN12102)
64 dB(A)
Hydraulic
Water Flow
–25°C ~ 43°C
Water Connection
75°C
Pressure Drop
2.9 m³/h
Circulation Pump
75°C
Pumo Head
2.9 m³/h

FAQs

Got questions?
We've got answers

What size Greenline do I need for my home?
The right size depends on your home's heat loss, which we calculate during the survey. As a rough guide: 6kW for well-insulated 1-2 bed homes, 9kW for 2-3 beds, 12kW for 3-4 beds, and 16kW for larger properties. We'll always size your system correctly to ensure optimal efficiency.
Can Greenline heat my hot water too?
Yes! The Greenline heat pump connects to a hot water cylinder to provide all your domestic hot water. We typically recommend a 200-300 litre cylinder depending on household size. For maximum efficiency, we can also pair it with our Ecocent dedicated hot water system.
How does Greenline perform in very cold weather?
Greenline continues to operate efficiently down to -20°C. At 0°C it still achieves a COP of 3.5+, meaning 350%+ efficiency. Even at -7°C (the UK's design temperature), it delivers 280% efficiency - still far better than any boiler.
What's special about r290 refrigerant?
R290 (propane) is a natural refrigerant with a Global Warming Potential (GWP) of just 3, compared to 675+ for older refrigerants. This makes Greenline genuinely eco-friendly. R290 is also more efficient at lower temperatures, perfect for UK winters.
Is the Greenline suitable for radiators or just underfloor heating?
Greenline works brilliantly with both! While underfloor heating is ideal due to lower flow temperatures, most existing radiator systems work well - especially if they were originally oversized (as most are). We assess your radiators during the survey and advise if any upgrades would benefit you.

Ready to Switch to Greenline?

Get a free, no-obligation quote and find out how much you could save. Our experts will design the perfect system for your home.

£7,500 BUS grant automatically applied (if requirements met) • Free home survey • No obligation

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OUR PRODUCTS

See our other complete home energy solutions

From heating and hot water to air conditioning, we have everything you need for a comfortable, efficient home.

AIR SOURCE HEAT PUMPS

Greenline

Our flagship heat pump range with R290 natural refrigerant. Up to 400% efficiency for whole-home heating.

Learn more

HOT WATER SYSTEM

Ecocent

Efficient hot water with built-in dehumidification. Perfect for tackling damp and mould issues.

Learn more

AIR CONDITIONING

Relair

Year-round comfort with efficient cooling in summer and heating in winter. Whisper-quiet operation.

Learn more

Get STARTED

Request your free quote

Fill in the form and our experts will be in touch within 24 hours to discuss your requirements.

Call us free
01865 598158

Email us
info@earthsaveproducts.com

Opening hours
Mon-Fri 8am-6pm, Sat 9am-1pm

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