Hitachi Cooling & Heating · Heat-pump or fixed-AC model
Yutaki M
Hitachi Yutaki M is a monobloc air-to-water family spanning R32 and R410A generations. Manufacturer tables and current MCS records publish different code-level SCOP figures.
Specifications
| Specification | Value |
|---|---|
| Type | air-source, air-to-water monobloc |
| Supply phases | single-phase R32 forms; documented R410A generation includes single-phase V codes and three-phase codes without V |
| SCOP (seasonal coefficient of performance) at 35°C | Hitachi table: R32 4.50 to 4.60 and R410A 3.90 to 4.75; current MCS exact rows: 3.59 to 4.52, code-dependent |
| SCOP at 55°C | Hitachi table: R32 3.20 to 3.40 and R410A 3.30 to 3.48; current MCS exact rows: 2.66 to 3.32, code-dependent |
| Maximum flow temperature (°C) | 60 for space heating in the documented product table |
| Heating-water temperature range (°C) | 20 to 60 in the documented product table |
| Domestic-hot-water temperature range (°C) | 30 to 75 in the separate documented domestic-hot-water range |
| Minimum operating temperature (°C) | -20 for R32 page-table codes; -25 for documented larger R410A codes |
| Refrigerant | R32 or R410A, depending on code generation |
| MCS certified | yes; earlier R32, N2 R32 and R410A exact records were current on 23 July 2026 |
Yutaki M keeps its refrigerant circuit and water heat exchanger in one outdoor unit. The family spans several code generations, with R32 and R410A products and different electrical supplies.
Manufacturer and MCS figures
Hitachi’s product table and the MCS directory do not publish the same SCOP figures for several identical codes. The table labels the two datasets separately because they are not interchangeable.
| Exact code | Hitachi SCOP 35°C / 55°C | Current MCS certificate | MCS SCOP 35°C / 55°C |
|---|---|---|---|
| RASM-2VRE | 4.60 / 3.40 | 041-K002-38 and 38 (1) | 4.52 / 3.32 |
| RASM-3VRE | 4.50 / 3.20 | 041-K002-39 and 39 (1) | 4.43 / 3.12 |
| RASM-2VR2E | not in that Hitachi table | 041-K002-66 a/b | 4.36 / 3.07 |
| RASM-3VR2E | not in that Hitachi table | 041-K002-67 a/b | 4.35 / 3.17 |
| RASM-3VNE | not in that Hitachi table | MCS HP0032/50 | 3.65 / 2.92 |
| RASM-4VNE | 4.75 / 3.48 | MCS HP0032/52 | 4.49 / 3.26 |
| RASM-4NE | 4.75 / 3.48 | MCS HP0032/51 | 4.47 / 3.25 |
| RASM-5VNE | 4.45 / 3.40 | MCS HP0032/54 | 4.01 / 3.12 |
| RASM-5NE | 4.45 / 3.40 | MCS HP0032/53 | 4.00 / 3.11 |
| RASM-6VNE | 3.90 / 3.30 | MCS HP0032/56 | 3.60 / 2.66 |
| RASM-6NE | 3.90 / 3.30 | MCS HP0032/55 | 3.59 / 2.66 |
The R32 VRE records have separate heating-only and cooling-kit rows. The VR2E N2 records use a and b certificate suffixes for those forms. The seasonal figure follows the exact row, not the Yutaki M name alone.
Operating boundaries
The Hitachi table separates a 20°C to 60°C space-heating water range from a 30°C to 75°C domestic-hot-water range. The higher domestic-hot-water boundary is not a 75°C space-heating claim.
Outdoor operating limits also change with generation. The R32 page-table codes are documented to -20°C for heating, while the larger R410A codes reach -25°C. Hitachi’s nominal-capacity row does not state one shared air-and-water test condition, so its figures are not directly comparable rated outputs.
Availability
Every MCS row in the table was current on 23 July 2026. Certification does not confirm current UK supply, which remained unconfirmed for the individual codes.
Related entries
Manufacturer and reference sources
Reference type
Heat-pump or fixed-AC model
Last reviewed
23 Jul 2026
Current status
UK new-supply status is unconfirmed.