Air Conditioning & Refrigeration Specialists in Hertfordshire & the South East
Maintenance contracts, repairs, new installations and emergency call-outs — built around quality workmanship, professional advice and a fast local response.
Officially Registered
Refcom F-Gas Certified
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What type of project do you need help with?
Pick a service — we'll respond within 24 hours with a free, no-obligation quote.
Air Conditioning
Split, multi-split, VRF & cassette systems
Refrigeration
Cold rooms, display fridges, freezers
Maintenance
Planned servicing & F-Gas inspections
New Install
Design, supply & commissioning
Emergency
Rapid response breakdowns
Repairs
Fault finding & part replacements
Free, no-obligation quote · Response within 24 hours · Fully insured
Our core services
What we do
From planned maintenance contracts to urgent breakdowns — covering domestic and commercial clients across the local area.
PopularAir Conditioning
Domestic & commercial split, multi-split, VRF and cassette systems.
Learn more about Air Conditioning
Refrigeration
Walk-in cold rooms, display fridges, freezers and bottle coolers.
Learn more about Refrigeration
Maintenance Contracts
Planned servicing to reduce downtime and keep sites compliant.
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New Installations
Full design, supply, install and commissioning by an experienced engineer.
Learn more about New Installations
Emergency Call-outs
Rapid response when critical AC or refrigeration equipment fails.
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Repairs & Diagnostics
Fast fault finding and reliable fixes for all leading brands.
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Why choose us
Trusted by homes & businesses
When you choose Ted McCarthy Services Ltd, you're choosing quality, reliability and peace of mind.
30+ years experience
Three decades of hands-on expertise across air conditioning and commercial refrigeration.
Fully insured & F-Gas certified
Refcom registered. Compliant work to industry standards, every time.
Fast local response
Based in Hemel Hempstead — quick to site across the South East.
Quality workmanship
Neat installs, tidy pipework and equipment built to last.
Professional advice
Competitive pricing and no surprises — only what you actually need.
Aftercare that lasts
Maintenance contract customers get priority response and out-of-hours emergency cover.
How it works
What to expect
No hassle. No hidden fees. Just clear timelines and reliable work.
01
Get in touch
Phone, email or message us about your project or issue.
02
Free site visit & quote
We assess the site and provide a clear, no-obligation quotation.
03
Design & planning
We agree the right equipment, layout and timings together.
04
Work completed
Professional, timely install or repair with minimal disruption.
05
Aftercare
Optional servicing keeps everything running reliably.
Sectors we serve
Trusted across industries
From single-room domestic installs to multi-site commercial maintenance — we work with clients of every size.
Domestic
Homes, flats and new-builds — quiet, efficient cooling and heating for any room.
Restaurants & Hospitality
Cold rooms, walk-ins, ice machines and bar fridges kept running through service.
Retail & Convenience
Display fridges, bottle coolers and shop-floor AC for a comfortable customer experience.
Offices & Workspaces
Cassette and ducted systems for clean, balanced office climate control.
Healthcare
Reliable temperature control for clinics, surgeries and care environments.
Education
Classroom and IT-room cooling that keeps students and equipment comfortable.
Brands we service
All leading manufacturers
We install, service and repair equipment from the UK's most trusted air conditioning and refrigeration brands.
Areas covered
Local engineers, fast on site
Based in Hemel Hempstead, we cover Hertfordshire, Buckinghamshire, Bedfordshire and London.
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Mon–Fri 08:00–17:00 · Out-of-hours emergency cover for contract customers · Free quotes
What customers say
Real reviews from real customers
"Ted has been absolutely great installing two different AC systems for us. Ted worked with us to get the right ones for us and our rooms."
"Ted came out to see my air conditioning unit at short notice as it had stopped working. He managed to get it all up and running again in no time — highly recommended."
"Ted McCarthy installed aircon in our bedroom. He was very knowledgeable and professional and did a great, neat job. Would recommend."
"Fantastic service. Very professional and great consultation before work was carried out. Would highly recommend."
"We had our AC fitted last summer and it has been a revelation, especially in my daughter's room in the loft which was hot and stuffy — now all of her friends want to come over and stay when it gets hot!"
"Very reliable and always able to cater to our needs, excellent service as always."
FAQs
Frequently asked questions
Are you Ted McCarthy Air Conditioning?
Yes — Ted McCarthy Services Ltd (TMS) is the company founded by Ted McCarthy. We're a Hemel Hempstead based air conditioning and commercial refrigeration specialist, and Ted personally oversees every job.
Do you offer free quotes?
Yes — every quotation is free with no obligation, and we'll happily visit your site to assess what's needed.
What areas do you cover?
We're based in Hemel Hempstead and cover Hertfordshire, Buckinghamshire, Bedfordshire and London.
Are you F-Gas certified and insured?
Yes. All refrigerant work is carried out by F-Gas certified engineers (Refcom registered), and we carry full public liability insurance.
Do you work on domestic and commercial sites?
Both. We install and maintain systems for homes, offices, shops, restaurants, retail and food businesses.
How quickly can you respond to a breakdown?
Where possible, same-day. Contract customers always get priority response.
Do you offer maintenance contracts?
Yes — bespoke planned maintenance schedules tailored to your equipment and site.
Get a free quote
Let's talk about your project
Speak directly to Ted — quick response across Hemel Hempstead, St Albans, Watford, Luton, Milton Keynes and the surrounding South East.