Industrial & laboratoryCTS: a constant 18°C all year roundTwo 10kW MHI cassettes holding a workshop at 18°CRead the case study →Air conditioning repairs & breakdowns
Not cooling, leaking, tripping or showing an error code? Our engineers fault-find and repair air conditioning and refrigeration, with 24/7 breakdown call-outs.
Common faults we fix
- Not cooling or heating properly
- Water leaking from the indoor unit
- Error codes and tripping
- Noisy or vibrating outdoor units
- Refrigerant leaks, including repair and recharge
- Failed fans, compressors, PCBs and sensors
How it works
Call 0121 798 1861. We’ll ask about the fault, the make and model, and arrange the earliest visit. Our engineers carry common parts, diagnose on site and give you a clear price before work starts.
All major brands
We repair Mitsubishi Heavy Industries, Daikin, Mitsubishi Electric, Samsung and other leading makes, domestic and commercial.
Why choose Optimal?
- Our own REFCOM F-Gas registered engineers (REF1023448), no sub-contracting
- Mitsubishi Heavy Industries Diamond Partner, with up to 10 years’ manufacturer warranty on qualifying systems
- Expert design and installation, commissioned and registered
- 4.9 rated from 126 Google reviews
Domestic work across the West Midlands. Commercial projects nationwide. Get a free quote or call 0121 798 1861.
Want a fixed price for your home?
See your price in seconds, or talk it through with an engineer. No obligation.
We install, repair and service every major brand
How it works
From enquiry to handover
- Tell us what you need. Use the calculator or send photos on WhatsApp.
- We confirm the price. A team member checks your photos and talks it through. Site survey if needed.
- Expert design and installation. Our own engineers, to the manufacturer’s specification.
- Commissioned and registered. Warranty registered and aftercare in place.
FAQ
Common questions
Do you offer 24/7 breakdown repairs?
Yes. Call 0121 798 1861 at any time.
Why is my air conditioner leaking water?
Common causes are a blocked condensate drain, a dirty filter or coil, or a poorly levelled unit. Switch it off and call us to diagnose it.
Is it worth repairing an old system?
Often yes, but not always. We’ll give an honest view when we diagnose the fault, including whether replacement makes sense.
Do you repair systems you didn’t install?
Yes. We repair most makes regardless of who installed them.
Case studies
Recent projects
Real jobs for real businesses, with the problem, the solution and the result.
Industrial & laboratoryCTS: a constant 18°C all year roundTwo 10kW MHI cassettes holding a workshop at 18°CRead the case study →
Maintenance contractsNCP Birmingham Airport: planned maintenance contractTwo planned visits a year across a mixed estate of unitsRead the case study →
Offices & workplacesViperia Exotics: air conditioning for the offices7kW and 2.5kW MHI Premium systems, neatly installedRead the case study →