35 years keeping London comfortable
Abacus AC Solutions is a family-run team of commercial air conditioning specialists, built on three decades of clean installs, honest advice and engineers London businesses trust.
A local team that treats your building like our own
Founded in 1989 and based in Ware, Hertfordshire, Abacus AC Solutions has grown from a two-man operation into one of London's most trusted commercial air conditioning contractors, without ever losing the personal, no-nonsense approach we started with.
We're not a national call centre. When you ring Abacus you speak to a real engineer, and the same faces that survey your premises are the ones who install, commission and look after your system for years afterwards. It's why most of our work still comes from referrals and repeat clients.
Three decades, one mission
From a single van to a full commercial contractor, the milestones that shaped Abacus.
Abacus was founded
Started as a small refrigeration and air conditioning outfit serving local Hertfordshire businesses.
Expansion into London
Growing demand from offices and restaurants takes our engineers across Greater London.
F-Gas & REFCOM certified
We invest in full certification and accreditation, becoming a trusted name for compliant commercial installs.
2,000th system installed
From single splits to building-wide VRF networks, our portfolio spans every commercial sector in the capital.
5.0-rated & still growing
A full-service team delivering installation, maintenance and rapid repair with the same values we began with.
The values behind every job
They're not slogans, they're the standards our engineers are held to on every site.
Honest advice
We specify what's right for your space and budget, never the most expensive option, and never the hard sell.
Quality that lasts
Clean, certified installs done properly the first time, the kind of work we're happy to put our name to.
Reliability
We turn up when we say we will, work around your hours, and answer the phone when you need us most.
People first
From your team to ours, we treat clients, staff and buildings with the same respect and care.
Efficiency
Right-sized systems and heat-reclaim options that cut your running costs and your carbon footprint.
Accountability
Fully insured and accredited, with the same engineers looking after your system for the long haul.
Meet the team you'll actually deal with
Qualified, friendly and local, the engineers and coordinators behind every Abacus install.
Mark Reynolds
Started Abacus in 1989 and still surveys sites today.
Daniel Okafor
F-Gas certified, 15 years of clean commercial installs.
Priya Sharma
Keeps hundreds of London systems running year-round.
Tom Bailey
The friendly voice when you call, books every survey.
Three reasons clients stay with us for decades
Fully qualified & certified
F-Gas registered, REFCOM & SafeContractor accredited engineers on every job.
Free, honest site surveys
A clear, fixed quote and a breakdown of costs before any work begins, no surprises.
The same faces, every time
The engineer who surveys your space installs and maintains it, for years to come.
Based in Ware, working across London
Our workshop and offices are in Stanstead Abbotts, Ware – perfectly placed to cover Greater London and the home counties for installation, maintenance and emergency call-outs.
Let's keep your business comfortable
Book your free, no-obligation site survey today and get a clear fixed quote from a contractor London businesses have trusted for over 35 years.