Stay cool this summer with a professional AC installation from Diyer UK. All installations are carried out by approved FGas certified engineers — legally compliant, fully insured, and built to last. Serving Reading, Berkshire and surrounding areas.
Comfort Cooling
Perfectly maintain the balance of temperature and humidity in every room. Customisable comfort for bedrooms, living rooms, home offices and more.
Energy Saving
Modern inverter AC systems heat AND cool your home efficiently. Lower running costs than traditional heating — with smart energy monitoring.
Smart Convenience
Control your AC from anywhere using your smartphone. Easy scheduling, sleep modes, and home automation compatibility.
Why Air Conditioning — Now More Than Ever
UK summers are getting hotter every year. 2025 was the hottest summer on Met Office records, with temperatures exceeding 35°C across England. British homes are built to retain heat — making them extremely uncomfortable during heatwaves.
Over 4 million UK homes now have air conditioning — more than double just 3 years ago. At Diyer UK, we install professional domestic AC systems across Reading and Berkshire, carried out exclusively by approved FGas certified engineers in full compliance with UK law.
The Right AC Solution for Every Room
The Right AC Solution for Every RoomBedroom
Sleep comfortably even during the hottest UK heatwaves. Wall-mounted split systems maintain the perfect temperature and humidity for restful sleep — whisper quiet operation guaranteed.
Living Room
Keep your main living space comfortable for the whole family. Powerful inverter AC units cool large open-plan rooms quickly and efficiently — controllable from your smartphone.
Home Office
Productivity drops significantly in the heat. A perfectly climate-controlled home office keeps you focused and comfortable throughout the working day — even during peak summer temperatures.
Whole Home — Multi-Room
One outdoor unit connected to multiple indoor units across your home. The most cost-effective way to cool your entire property with independent room control.
Our Air Conditioning Services
Split System Installation
Most popular choice for UK homes. One outdoor unit, one indoor wall-mounted unit. Ideal for bedrooms, living rooms and home offices.
Multi-Room AC Installation
One outdoor unit connected to multiple indoor units. Cool your entire home without multiple outdoor units cluttering your exterior.
Heat Pump Systems
Cool in summer, heat in winter. One system for year-round comfort with significantly lower running costs than electric heating.
AC Servicing & Maintenance
Annual servicing to maintain peak efficiency, clean filters, check refrigerant levels and inspect all electrics.
Refrigerant Leak Testing
Legal requirement under UK FGas Regulations. We test, detect and repair refrigerant leaks — keeping your system compliant and safe.
AC Removal & Replacement
Safe removal of old units, legal refrigerant recovery and professional new system installation with full certification.
FGas Certification — Why It’s the Law
Under UK law, any engineer working with fluorinated greenhouse gases used in ALL modern air conditioning systems must hold a valid FGas certification (City & Guilds 2079).
It is ILLEGAL in the UK to install, service or handle refrigerants without this certification. Hiring an uncertified engineer can void your warranty, invalidate your insurance and leave you with a non-compliant installation.
At Diyer UK, every single installation is carried out exclusively by FGas certified, City & Guilds 2079 qualified engineers. Full documentation provided on completion.
- FGas Certified Engineers
- City & Guilds 2079 Qualified
- UK Law Compliant
- Fully Insured
- Environment Agency Compliant
- Full Documentation Provided
How It Works — 5 Simple Steps
Step 1 — Free Home Survey
We assess your property and recommend the perfect AC system for your needs and budget.
Step 2 — Fixed Quote
Clear, transparent pricing with no hidden costs. You know exactly what you’ll pay.
Step 3 — FGas Certified Installation
Our certified engineers install your system to the highest standard.
Step 4 — Commissioning & Testing
Full system test before we leave — ensuring perfect operation from day one.
Step 5 — Documentation
All FGas certificates and paperwork provided on completion.
Frequently Asked Questions
Q: Do I need planning permission for AC in Reading?
Q: Is FGas certification really required by law?
Q: How long does installation take?
Q: Can AC also heat my home in winter?
Q: How much does it cost to run?
Q: How often should I service my AC?