Quietly powerful. Beautifully efficient. Trust Daikin.
Altherma 4 is the fourth and next-generation Daikin Altherma system, featuring R290 and advanced new capabilities. It marks the beginning of a new chapter in low-carbon home heating.
This high-temperature heat pump has been designed from the ground up for residential modernisation and retrofit applications. Offering outstanding performance, installer-friendly features, and ultra-quiet operation, Altherma 4 is the smart, future-ready choice for homes with existing radiator systems.
Bring next-gen heating to today’s homes with Daikin.
Next-generation comfort, built for today’s homes
Daikin Altherma 4 H seamlessly integrates with existing radiators, delivering leaving water temperatures (LWT) of 70-75°C, even when the temperature outside drops to -15°C. It’s the ideal solution for retrofit projects and homes in need of reliable, high-performance heating.
Engineered for efficiency, the Daikin Altherma 4 H features in-house designed and manufactured components, including a compressor, fan, and microchannel heat exchanger, all specially developed for this advanced heat pump. These advancements not only reduce energy costs but also ensure reliable operation year-round.
Choose the Daikin Altherma 4 H for installations that satisfy clients with reliable, efficient performance and easy integration into their existing systems.
Whisper-quiet performance
With sound levels as low as 28 dBA at 3 meters, this is the quietest heat pump in its class – perfect for applications where quiet operation is specially required.
A newly engineered fan, additional sound insulation, and a redesigned front grille that conceals the fan and reduces airflow resistance all contribute to the system’s whisper-quiet operation.
Engineered for year-round efficiency
With a best-in-class heating capacity, the Daikin Altherma 4 H provides 13.3 kW of output at -7°C ambient temperature, for the 55°C leaving water temperature required for older radiators.
This makes it a dependable choice for consistent warmth, especially in challenging climates. Operating down to -28°C, the Daikin Altherma 4 H ensures homeowners stay comfortable, no matter the weather.
User-friendly controls for installers and homeowners
Experience easier, faster, and more intuitive navigation with the new 5" colour touchscreen MMI
The Daikin Altherma 4 H features an advanced 5" color touchscreen MMI, designed to simplify both setup and everyday use for installers and homeowners.
Redesigned interface
The new touchscreen MMI matches the sleek aesthetics of Daikin’s Madoka and Onecta controls, offering a modern design across devices.
5-Inch colour touchscreen
New display makes information clearer and navigation smoother, allowing you to instantly understand the Daikin Altherma 4 H performance at a glance.
Easy menu navigation
Swiping through the menu brings a seamless experience, making it simple for homeowners to adjust settings and for installers to access advanced configurations.
Enhanced installer mode
In installer mode, additional functions become visible while keeping the menu structure consistent, ensuring a streamlined setup without unnecessary complexity.
Block-based scheduling for heating and cooling
Efficiently manage cooling and heating schedules with block-based programming, offering a quick way to customise temperature settings for optimal comfort and energy savings.
Future-ready technology
Smart Grid readiness ensures the system is prepared for the future, offering compatibility with advanced energy management solutions.
Installation made easier
The Altherma 4 has been carefully engineered for easier installation and servicing. With clip-on connectors, a reduced screw count, and a pre-mounted ambient temperature sensor, installation is faster with fewer steps.
The PCB is placed at an ideal height for access and maintenance, and remote settings adjustment further reduces the need for on-site follow-ups.
Daikin Residential ONECTA App, with voice control
- Control from anywhere your residential units for heating, cooling, air purification, …
Multi-user, Multi-room and Multi House
Voice control through Google Assistant & Amazon Alexa.
Phone and tablet support
Landscape & dark mode view
Access to Stand By Me support
Integrated DEMO mode
… and many more.
Safe by design with advanced safety features
Class-leading safety with R290
The Altherma 4 includes a range of features designed to set new industry safety standards for both installers and end users.
Advanced features include a completely sealed refrigerant circuit, factory-mounted anti-freeze valves, and additional safety sensors built into the unit. The internal layout separates electrical and refrigerant components, reducing risk and simplifying maintenance.
Even transport safety has been considered, with a sealed design that protects the system during handling. For installers working with R290 for the first time, these enhancements help build confidence and make safety simple.
You’re never alone on the field
Daikin's commitment to installer support means you're never alone in the field. From comprehensive training programmes to technical assistance, we're here to ensure your success at every step of the way.
Become a Sustainable Home Expert
Join the Sustainable Home Network and get the backing you need to deliver high-quality Daikin Altherma 4 H installations.
We offer dedicated training, certification and technical support through our nationwide network, helping you commission, maintain and repair every system to the highest safety and quality standards.
You’ll also get access to a range of business-boosting benefits, including marketing support, exclusive rewards and ongoing guidance to help your heat pump business grow.
Designed for installers, built by experts
Optimised design for installation, service and manufacture
Daikin Altherma 4 H design supports:
1. Installation
Clip-on intermediate connectors
Quick, tool-free setup; no need to access the PCB.
Fewer screws
Reduced number of screws for faster, simpler assembly.
Built-in anti-freeze valve & pre-mounted ambient temperature sensor
Ready-to-use components minimise setup time and ensure reliable performance.
2. Servicing
Ergonomically positioned PCB
Accessible at an ideal height, with all parts easily replaceable, streamlining servicing.
Remote installer settings capability
Enables remote finetuning without on-site visits, reducing maintenance trips.
3. Manufacturing
Automated microchannel heat exchanger production
Precision automated process minimises human error, ensuring high-quality, consistent performance.
Sustainable design with recycled materials
Cover grill made from over 50% recycled industrial plastics and microchannel heat exchanger made in aluminium, supporting eco-friendly manufacturing.
Customisable comfort for every household
Choose your indoor unit
Explore the two indoor unit options available in this range, each designed to meet different needs. With flexible settings and configurations, you can tailor your system to suit your home and climate.
1. Wall-mounted model
A compact unit that combines with a separate tank to deliver domestic hot water. This model offers an optional cooling function.
2. Integrated DHW stainless steel tank model
A compact unit with a footprint of 595x625mm. The unit connects to a 180 or 230L tank to meet domestic hot water demand and can operate in either a cooling or bizone settings.
