Worcester Bosch · Heat-pump or fixed-AC model
Compress 7400i AW
Worcester Bosch Compress 7400i AW is a 5 and 7 kW R410A monobloc range whose current UK new-supply position is unclear.
Specifications
| Specification | Value |
|---|---|
| Type | air-source, air-to-water monobloc |
| Supply phases | single |
| Rated output (kW) | 5 or 7 capacity name |
| Rated-output conditions | A2/W35 output 5.48 and 7.29 kW respectively |
| SCOP (seasonal coefficient of performance) at 35°C | 4.73 and 4.61 for 5 and 7 kW in the MCS directory on 23 July 2026 |
| SCOP at 55°C | 3.27 and 3.47 respectively |
| Maximum flow temperature (°C) | 62 |
| Refrigerant | R410A, 1.75 kg at 5 kW and 2.35 kg at 7 kW |
| Sound power (dB) | 50 for both capacities |
| MCS certified | 011-1W0123_02 and 011-1W0124_02, current to 31 July 2027 at review date |
| Warranty (years) | minimum 2 under current heat-pump terms; exact registered term applies |
Compress 7400i AW is a two-model R410A monobloc range with 5 and 7 kW capacity names. Its technical codes are CS7400iAW 5 ORE and CS7400iAW 7 ORE.
Technical distinction
Both models use a single-phase supply and connect to specified indoor equipment. The 5 kW unit has a 1.75 kg R410A charge, while the 7 kW unit has 2.35 kg. Worcester Bosch gives a maximum heat-pump flow temperature of 62°C.
At 2°C outdoor air and 35°C water, the technical sheet gives outputs of 5.48 and 7.29 kW respectively. It gives a coefficient of performance of 5.01 at the separate 7°C/35°C point for both. Those conditions need to stay attached to the figures.
Both capacities have a published sound power of 50 dB(A). Site sound pressure depends on the unit’s operating point, distance and surroundings.
Certification and availability
The exact 5 and 7 kW models had current MCS Product Directory records through 31 July 2027 at the review date. Their 35°C seasonal values were 4.73 and 4.61, and their 55°C values were 3.27 and 3.47.
New-supply status is less clear. Compress 7400i AW was absent from Worcester Bosch’s current homeowner and professional heat-pump directories on 23 July 2026. A manufacturer installer promotion published in May 2026 still named the range. Certification, promotional inclusion and normal catalogue availability are different facts, so this entry records availability as unconfirmed.
The published evidence supports use of the range as existing equipment and may support retained stock, but it does not establish normal current supply. The exact outdoor and indoor-unit combination remains relevant to certification and technical data.
Guarantee
Current Worcester Bosch heat-pump terms provide a minimum two-year guarantee, potentially longer by product and installer accreditation. The registered guarantee certificate establishes the term for an installed unit.
Related entries
Manufacturer and reference sources
Brand
Reference type
Heat-pump or fixed-AC model
Last reviewed
23 Jul 2026
Current status
UK new-supply status is unconfirmed.