Air conditioning & central heating specialists in St Albans.
AF Clark Ltd installs and services air conditioning systems and boilers for homes and businesses across St Albans and the surrounding areas — backed by 27 years of hands-on experience.
What we do
Installation and servicing of air conditioning and boilers, for homes and businesses throughout St Albans and the surrounding areas.
Air Conditioning Installation
Wall-mounted, ducted and multi-split systems installed for homes and businesses across St Albans, sized and fitted properly first time.
Boiler Installation
Gas Safe registered boiler replacements and new installations, with clear advice on the right system for your property.
Boiler Servicing
Annual servicing and safety checks to keep your heating running efficiently and reliably through the winter.
Air Conditioning Servicing
REFCOM registered maintenance, filter cleaning and refrigerant checks to keep your cooling in top condition.
Air conditioning brands we install & service
Recent work
A few examples of installations completed around St Albans and the surrounding areas.
Mitsubishi Electric 2.5kW wall-mounted indoor unit
Around 9,000 BTU — well suited to a bedroom, study or small living room. R32 inverter heat pump, so it both cools in summer and heats efficiently in winter, with sound levels down to roughly 19–21 dB(A) on low fan and A+++ rated seasonal efficiency.
Daikin 2.5kW outdoor condenser
The matching outdoor half of a single-room (pair) system. R32 refrigerant, inverter-driven compressor for lower running costs, blue-fin anti-corrosion coated heat exchanger for weather resistance, and heating operation down to around -15°C outdoors.
Mitsubishi Electric 6kW wall-mounted indoor unit
Around 21,000 BTU — sized for larger living rooms, open-plan spaces and offices. R32 inverter heat pump with multi-stage filtration, wireless controller and quiet operation, delivering full heating capability as well as cooling.
Commercial installation
Air conditioning for commercial properties
Youth Talk is a St Albans charity providing free counselling for young people. We designed and installed a complete air conditioning system across their offices and counselling rooms — 12 wall-mounted indoor units in total, giving each room its own independent temperature control for year-round heating and cooling.
- 12 Mitsubishi Electric wall-mounted indoor units across offices and counselling rooms
- Individual room control so every space can be set to its own temperature
- Quiet-running units chosen specifically for confidential counselling sessions
- Neat external pipework routed to keep the building's appearance intact
- Installed with minimal disruption to the charity's day-to-day work
“After a competitive tender process we used Andy for the installation of air conditioning across our office spaces and counselling rooms — and we have been absolutely delighted we selected AF Clark Ltd! The customer service from day one, the quality of workmanship, the general advice and the after sales service we have received from Andy has been second to none. Highly recommend.”
David Barker
Chief Executive — Google review
A local, independent business you can trust
AF Clark Ltd has been run by Andy Clark for 27 years, working across St Albans and the surrounding villages. Gas Safe registered for gas work and REFCOM registered for refrigerant handling — so every job is done to standard and signed off properly.
- Gas Safe registered for all gas and boiler work
- REFCOM registered for air conditioning and refrigerants
- Clear, upfront quotes with no hidden extras
- Directly with Andy from quote to completion
27
Years in the trade
Gas Safe
Registered
REFCOM
Registered
What our customers say
Rated 4.8 out of 5 from 20 Google reviews by customers around St Albans and Hertfordshire.
Read all reviews on Google“Andy has just finished doing his second job at our house, and I couldn't be happier with his work! His first visit was to fit a few radiator valves and service my boiler — all completed quickly and neatly at a good cost. He then installed two air conditioning units through the house: clear options and prices, sensible recommendations, and a really efficient, diligent install. I would highly recommend Andy for any heating, plumbing or air conditioning work.”
Kevin Gray
Google review
“Andy is a first rate plumber and heating engineer. He has been servicing our boiler for years, and did an excellent job installing a new air conditioning unit/heat pump for our garden room. Andy is polite, punctual and very knowledgeable. We would thoroughly recommend him!”
Suman Ziaullah
Google review
“Over the years Andy has replaced a boiler, installed a new control system, sorted out radiators and (most recently) fixed an expansion tank in our home. He is always professional, friendly and unfazed by whatever he is presented with. He takes the time to explain clearly what the issue is and how it needs to be dealt with. I would not hesitate to recommend him.”
Judith Head
Google review
Get in touch for a quote
Tell us what you need and we'll get back to you. For anything urgent, give Andy a call directly.
Address
St Albans, Hertfordshire
Covering St Albans and surrounding areas.