About us

Trusted local expertise for air conditioning & refrigeration.

Ted McCarthy Services Ltd is a Hemel Hempstead based business helping homes and businesses keep critical climate and cooling systems running properly, efficiently and safely.

Ted McCarthy

Meet Ted

After 30 years of being employed in the trade, Ted founded TMS Ltd to service the AC and refrigeration market to the highest standards. The reasoning is simple: deliver the service and quality that customers actually desire — turning up on time, completing work to the highest levels, competitive pricing, and excellent after-sales care and customer service.

With three decades of hands-on experience across domestic air conditioning, commercial refrigeration, walk-in cold rooms and full building fit-outs, all work undertaken by the TMS team is overseen by Ted personally, to ensure every job is carried out to the client's standards.

We provide air conditioning and refrigeration maintenance, repairs, installations and emergency call-outs across Hertfordshire, Buckinghamshire, Bedfordshire and London. Whether it's planned servicing for a commercial site, a broken display fridge in a shop, or a new AC system for your home, we deliver work you can rely on.

  • Professional advice, competitive pricing, no surprises
  • Domestic and commercial experience
  • Maintenance-first approach to reduce breakdowns
  • Fast local response across Hertfordshire & London
  • Quality workmanship on every install
  • Professional, presentable service
  • F-Gas certified & fully insured
  • Trusted by retail, hospitality & homeowners

Credentials

Qualified, insured & experienced

F-Gas Certified

Refcom registered — compliant refrigerant handling on every job.

Fully Insured

Comprehensive public liability cover.

3 Decades On The Tools

30+ years of hands-on AC and refrigeration experience.

Mon–Fri 08:00–17:00

Out-of-hours and emergency call-outs for maintenance contract customers.

All Brands Serviced

Panasonic, LG, Midea, Daikin, Mitsubishi, Foster, Williams and more.

Neat Workmanship

Tidy installs you'll be happy to show off.

Refcom F-Gas Certification

Officially Registered

Refcom F-Gas Certified

All refrigerant handling carried out to current F-Gas regulations.

Our promise

A different kind of service

We know how frustrating it is to wait days for an engineer to call back, get vague quotes, or end up with messy installs and surprise invoices.

Our promise is simple: we'll communicate clearly, turn up when we say we will, recommend only what you actually need, and leave your site clean and your equipment running as it should.

That's why so much of our work comes through repeat custom and recommendations from satisfied homeowners and business owners across Hertfordshire and the South East.

Call WhatsApp Quote