Industrial & laboratoryCTS: a constant 18°C all year roundTwo 10kW MHI cassettes holding a workshop at 18°CRead the case study →Chiller installation & maintenance

Chillers sit at the heart of large cooling systems, so downtime is expensive. We install, maintain and repair air-cooled comfort and process chillers.
Chiller services
- New chiller installation and replacement
- Planned maintenance, including condenser cleaning and refrigerant checks
- F-Gas leak testing and records
- Compressor and component repair
- Controls, pumps and pipework
Major overhauls
We carry out heavy repairs including compressor lifts and replacements, with the right lifting equipment and a proper plan for each job.
Keep it running
A planned maintenance contract finds small faults before they become breakdowns and keeps energy use down. We also provide 24/7 breakdown cover.
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.
Planning a commercial project?
Book a free site survey and get a fixed written quotation from our own engineers.
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
How often should a chiller be serviced?
At least annually, and more often for process-critical or high-hours machines. Regular maintenance prolongs life and cuts running costs.
Do you repair chillers of any make?
We work on most major brands. Call us with the make, model and fault code and we’ll advise.
Can you replace a chiller with minimal downtime?
Yes. We plan changeovers carefully, sometimes using temporary cooling, to keep your operation running.
Do you cover areas outside the West Midlands?
Yes. Commercial projects and breakdowns are covered nationwide where practical.
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 →