Accredited & compliant
REFCOM F-Gas certified, OFTEC registered, MCS certified and a RECC member, with a CSCS-carded team and Mitsubishi Electric Accredited Partner status — plus full paperwork on every visit.
Commercial HVAC & mechanical services · UK-wide
Heating & cooling that's fitted properly — and looked after.
From a single wall cassette to a full VRF system, Clarus designs, installs and maintains commercial heating, cooling, ventilation and plumbing across the UK.
REFCOM, OFTEC, MCS & RECC Mitsubishi Electric Accredited Partner
UK-wide commercial coverage
Certified, trained & fully documented
OFTECRegistered MCSCertified RECCCTSI-approved code CSCSCarded team Mitsubishi ElectricAccredited Partner 
Working UK-wideBased in Congleton
Who we are
Heating, cooling, ventilation and plumbing — handled by one expert team.
Clarus Heating & Cooling is a focused commercial HVAC and mechanical team, based in Congleton and working across the UK. We bring hands-on experience, recognised certifications and one accountable team to every site.
We work mostly with small and mid-sized commercial premises — offices, food production, hotels and high-care environments — the kind of sites where comfort, compliance and a quick, friendly response actually matter.
Being a smaller, focused team is deliberate: we stay hands-on, move quickly and don't let the details slip — wherever in the country the work takes us.
One team
Heating, cooling, ventilation & plumbing — not four trades to chase
UK-wide
On site across the country, wherever you're based
Hands-on
A smaller, expert team — so the detail gets the attention it needs
Why Clarus
Straightforward, accountable and on your side.
The things facilities and service managers actually want from a mechanical partner — without the hard sell.
Fast, friendly response
Planned maintenance that heads off downtime, and a team that actually picks up when something can't wait.
One partner, every system
Heating, cooling, ventilation and plumbing under one roof — not four separate trades to chase.
Genuine Mitsubishi installsUp to 5-year warranty
Our specialism
We specialise in Mitsubishi Electric.
It's the kit we know best and trust most. As an official Mitsubishi Electric Accredited Installer Partner, we can offer eligible finished equipment with up to a five-year manufacturer warranty.
Mr Slim, City Multi VRF and ceiling & wall cassettes — specified and fitted to suit the building.
Up to five years' warranty on eligible finished goods, subject to Mitsubishi Electric's product and scheme terms.
Priority technical support for our engineers, including a 24/7/365 out-of-hours technical helpline.
What we do
The systems we fit — and the ones we keep running.
Mostly small and mid-sized commercial work. Whatever's on your site, it's installed and maintained by the same team.
Air conditioning & cassettes
Wall and ceiling cassettes for offices, meeting rooms and shop floors — quiet, efficient cooling and heating, neatly installed.
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VRF / VRV systems
Multi-unit systems for bigger offices and buildings — one outdoor plant, room-by-room control, balanced across the whole space.
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Ducted systems & MVHR
Ducted air and mechanical ventilation with heat recovery — fresh, filtered air and recovered warmth for tighter, modern buildings.
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Commercial heating
Boilers, plant, controls and air source heat pumps — reliable, efficient heat for offices, hotels and production floors.
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Commercial & industrial plumbing
Process and welfare pipework, hot and cold water systems and compliance for demanding, high-care sites.
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Service & maintenance
Planned maintenance and reactive cover that keep your systems efficient, compliant and online — single site or many.
More on maintenance →Service & maintenance
One team looking after your sites.
The work that doesn't stop at handover. Planned maintenance and reactive cover keep your heating, cooling and ventilation efficient, compliant and online — across every site, on one contract.
PPM contracts
Scheduled servicing that prevents breakdowns and keeps you audit-ready.
Reactive cover
One number to call when something can't wait — fast, accountable response.
Refrigerant & compliance
System checks, refrigerant records and service documentation — all handled properly.
Multi-site, one contract
Every site looked after by the same people who already know them.
PPM & reactive coverSingle site or many
Proof
Commercial support you can rely on.
Responsive, straightforward and accountable — whether it's planned maintenance or a job that can't wait.
Clarus are easy to deal with, quick to respond and always do the job properly.
Built for contract work
One responsive team for planned maintenance and the jobs that can't wait.
Single site or multi-site, you get one point of contact and a team that already knows your systems.
How it works
One accountable partner, across the whole job.
From the first visit to ongoing care — designed, delivered and looked after by the same team.
01
Survey & assess
We visit, understand the site and its risks, and scope the work properly.
02
Design & quote
A clear, costed proposal — no surprises and no jargon later.
03
Install & commission
Delivered by our own team, then properly commissioned and documented.
04
Service & maintain
Ongoing PPM and reactive cover, all from one team.
One point of accountability — so nothing falls between trades.
Let's keep your site running.
Tell us about your site and systems, and we'll arrange a survey at a time that suits you — no obligation, no hard sell.
Get in touch
Talk to our team about your site.
For a quote, survey or maintenance conversation, call or email us and we'll come back to you.