Daikin · Heat-pump or fixed-AC model
Altherma 3 R
Daikin Altherma 3 R is a current low-temperature R32 air-to-water split family with wall-mounted and integrated-cylinder indoor options.
Specifications
| Specification | Value |
|---|---|
| Type | air-source, air-to-water low-temperature split system |
| Supply phases | single or three, depending on exact outdoor and indoor code |
| Rated output (kW) | ERGA 4, 6 and 8 classes; ERLA 11, 14 and 16 classes appear in current records |
| Refrigerant | R32 in a split outdoor-to-indoor refrigerant circuit |
| Domestic-hot-water temperature range (°C) | up to 60 on current UK package pages |
| Minimum operating temperature (°C) | -25 |
| Sound pressure at stated distance (dB) | 44 to 50 on current UK package pages |
| MCS certified | current exact ERGA and ERLA combinations were present on 23 July 2026 |
| Warranty (years) | 2 standard; extensions depend on registration, installer route, maintenance and terms |
Altherma 3 R is Daikin’s current lower-temperature R32 split air-to-water family. Current records use ERGA outdoor codes in the 4, 6 and 8 kW classes and ERLA codes in the 11, 14 and 16 kW classes.
A split system with several indoor routes
Refrigerant pipework connects the outdoor and indoor units, unlike an Altherma 3 M monobloc or Altherma 4 H hydrosplit. Refrigerant work therefore follows the qualifications, pipe limits and commissioning instructions for the exact combination.
The R W package has a wall-mounted indoor hydraulic unit and separate hot-water storage where required. R F combines the indoor hydraulic equipment with an integrated 180 or 230 litre cylinder. Heating-only and reversible units, backup-heater ratings and electrical supplies add further suffixes.
Published package figures
Daikin’s current UK package pages state domestic hot water up to 60°C, outdoor operation down to -25°C and outdoor sound pressure from 44 to 50 dB(A). These are family presentation figures. Capacity at the design temperature, flow temperature limits and sound power remain code-specific.
The family is described for low-temperature emitters and new-build applications, but that wording is not a heat-loss calculation. The building design still determines the required output and emitter temperatures.
Certification and warranty
Exact ERGA and ERLA indoor-and-outdoor combinations were current in the MCS (Microgeneration Certification Scheme) Product Directory on 23 July 2026. Some records include a named cylinder or integrated indoor unit. The complete combination should be matched rather than relying on Altherma 3 R alone.
Daikin’s live UK warranty page stated a two-year standard term at the review date. Longer air-to-water terms were available through Stand By Me subject to registration, qualifying installation, annual maintenance and the full conditions.
Related entries
Manufacturer and reference sources
Brand
Reference type
Heat-pump or fixed-AC model
Last reviewed
23 Jul 2026
Current status
Current in the manufacturer's UK range.