Industrial & laboratoryCTS: a constant 18°C all year roundTwo 10kW MHI cassettes holding a workshop at 18°CRead the case study →Commercial
Commercial air conditioning & refrigeration
Designed from the heat load up. Offices, retail, hospitality and industrial, delivered nationwide.
Why us
Engineered, not guessed
Every commercial system starts with a room-by-room heat load, a drawing and a written specification. Then our own engineers install, commission and maintain it.
- Heat load calculations and design drawings
- VRF/VRV, cassettes, ducted, chillers and ventilation
- REFCOM F-Gas registered, MHI Diamond Partner
- Planned maintenance and 24/7 breakdown cover
Engineering tool
Cooling heat load calculator
The same method we use on a design: fabric, solar, people, lighting, equipment and fresh air, summed to a design load and a plant selection. A free site survey then confirms it on site.
Optimal Engineering Ltd · Heat load sheetDesign: 28°C DB ext · 24°C int
FLOOR PLAN · NTS
◄ DESIGN SCHEMATIC ►Example project drawing
Cooling load0 kW
Btu/h0
Load density0 W/m²
Refrigeration tons0
| # | Load component | Basis | Share | kW |
|---|---|---|---|---|
| TOTAL DESIGN COOLING LOAD | 0 | |||
Suggested plant
ProjectYour premises
Drawing refOHC-HL-0000
Date
EngineerOptimal Engineering Ltd
Indicative design-stage estimate to CIBSE-style methodology using typical gains. Final selection is confirmed after a site survey, including fabric, orientation, occupancy and process loads.
126Google reviews, 4.9 rated
Nationwidecommercial delivery
REFCOMF-Gas registered
24/7breakdown cover
Recent commercial work
On site, across the country
Offices, retail, hospitality and industrial units, designed from the heat load up and delivered by our own REFCOM registered engineers, nationwide.
Systems we design and install
- VRF / VRV multi-zone systems for offices and larger buildings
- Ceiling cassettes for open-plan offices, shops and restaurants
- Ducted and concealed units where appearance matters
- Wall, floor and server-room split systems
Designed from the heat load
We calculate heat gains and losses room by room: fabric, glazing, orientation, occupancy, lighting and equipment, then size the system accordingly. You receive layout drawings, equipment schedules and a fixed written quotation.
Brands
We are a Mitsubishi Heavy Industries Diamond Partner and also install Daikin, Mitsubishi Electric and other leading brands, matching the system to the building and the client’s preference.
After installation
Planned maintenance contracts, F-Gas leak checks and 24/7 breakdown cover keep systems running and compliant. See servicing and repairs.
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.
FAQ
Common questions
Do you cover the whole UK?
Yes. Our engineers are based in the West Midlands, and we take on commercial projects nationwide.
How much does commercial air conditioning cost?
Commercial systems are bespoke, so we price them after a free site survey and heat load calculation, then issue a fixed written quotation.
How long does a commercial installation take?
Typically days to a few weeks depending on size. We programme around your trading hours and other trades.
Can you maintain an existing system?
Yes. We service and repair most major brands and can take over maintenance of systems we did not install.
Do you handle F-Gas compliance?
Yes. We are REFCOM registered and keep the leak checks and records your system needs.
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 →