Compressor Replacement Cost — AC, Heat Pump & Mini-Split (UK, 2026)
Estimated £600–£3,500 for a compressor replacement in the UK, depending on the HVAC system and the exact fault. Built from 7 sourced repair jobs across 3 HVAC types — each row keeps its own sources. Reviewed July 2026.
What a compressor replacement costs, by HVAC and fault Estimated
Each row is a real sourced repair job whose description matched this part. Parts and total are that job's own national range — follow the problem link to localize it to your area.
| HVAC | Problem | Repair | Parts | Total | DIY |
|---|---|---|---|---|---|
| Central Air Conditioning | Compressor replacement | Compressor replacement (installed) | £500–£1,000 | £800–£1,500 | Pro recommended |
| Heat Pump | Refrigerant leak repair / recharge | Severe/compressor-area leak, full evacuation + recharge | £300–£700 | £600–£1,200 | Pro recommended |
| Heat Pump | Compressor replacement | Heat pump compressor replacement (standard) | £600–£1,200 | £1,500–£3,000 | Pro recommended |
| Heat Pump | Compressor replacement | Compressor replacement, major/complex case | £1,000–£1,800 | £2,000–£3,500 | Pro recommended |
| Ductless Mini-Split | Not cooling | Compressor replacement (outdoor unit) | £400–£900 | £800–£1,600 | Pro recommended |
| Ductless Mini-Split | Compressor replacement | Compressor replacement (outdoor unit) | £400–£900 | £800–£1,600 | Pro recommended |
| Ductless Mini-Split | Outdoor unit not running | Compressor replacement (outdoor unit) | £400–£900 | £800–£1,600 | Pro recommended |
Base: published rates from 18 UK repair companies · National base ranges — localize any figure on its linked problem page · Reviewed July 2026 · Estimated
Related HVAC cost guides
The full cost guide for each HVAC system a compressor replacement shows up in:
Estimated national ranges aggregated from the linked problem pages — no per-page localization is applied here. See the methodology for the localization method and named sources.
Reviewed by a Red Seal–certified appliance technician who also holds a Technical Safety BC gas ticket (Gas-C) and an ODS/halocarbon refrigerant ticket (CFC/HCFC/HFC).