Subcooled Hertfordshire Air Conditioning
Air Conditioning Hertfordshire for Homes & Businesses
Subcooled Air Conditioning installs and repairs air conditioning in Hertfordshire. We help homes, shops and workplaces stay cool and warm through the year.
Our team has over 15 years in the trade. We fit new systems, fix faults and carry out regular checks. In summer, your rooms stay cool and fresh. In winter, many systems can also give heat.
We supply units that are quiet and low energy. They are simple to use and built to last. Our aim is to keep your system running well and help lower your energy bills.

Expert Air Conditioning Services Hertfordshire
Subcooled Air Conditioning offers reliable cooling for homes, offices and industrial buildings across Hertfordshire.
Whether you need a unit for one room or a full system for a large site, we design, install, and maintain it for you.
We also cover plumbing, gas work, air source heat pumps, and ventilation systems. With Subcooled, you can heat and cool your property with one trusted team. Giving you complete peace of mind .
If you’re thinking about a new system or your current one isn’t working well, get in touch today for friendly advice and a free quote.
Installation Services
Repairs
Servicing
Plumbing
Maintenance
Electrical
Our Services
Air Conditioning Installation
We install high-quality air conditioning systems for homes. Our systems help keep your space cool, comfortable and energy efficient.
Commercial Air Conditioning
We provide tailored cooling systems for offices, shops, warehouses and larger business spaces.
Air Source Heat Pump
A greener way to heat and cool your property. Air source heat pumps can help lower energy use and reduce running costs.
Chilled Water Air Conditioning
Cooling systems for industrial and commercial spaces. Designed to give steady temperature control and help reduce energy use.
Heat Recovery Systems
Ventilation systems that help improve air quality and save energy. A simple way to keep indoor spaces fresh and efficient.
Commercial Gas Services
Gas services for commercial sites, including installation, maintenance and safety checks. All work is carried out by qualified engineers.
Commercial Plumbing
Plumbing for businesses, from small fixes to full water system support. We help keep your site safe and working well.
Extract Ventilation
We design and fit extract ventilation for homes and business sites across the South East.
Emergency Plumbing
Fast plumbing help for homes and businesses. We are here when you need urgent support.
Domestic Air Conditioning Installation in Hertfordshire
Keep your home cool and comfortable all year with Subcooled Air Conditioning. We work across Hertfordshire on systems in houses, flats and commercial spaces. You can choose to cool one room or your whole home.
Our team will guide you to the best system for your needs. We focus on low energy use, quiet running and steady temperature control. We fit high-quality units, including wall-mounted and multi-room systems.
We have over 15 years of experience. Our work is neat, tidy and kept as disruption-free as possible. From the first visit to the final install, we make the whole process simple and clear.
Thinking about air conditioning for your home? Contact us today to discuss your options and book a free quote.


Commercial Air Conditioning in Hertfordshire
Keep your workplace cool with Subcooled Air Conditioning. We install air conditioning for businesses across Hertfordshire. Our team works with offices, shops, restaurants and warehouses.
We can install a system in one room or across a full building. Each system is chosen to suit the space and how the room is used.
Our engineers visit your site to look at the layout and cooling needs. We then suggest a system that keeps rooms cool and easy to control. Our units run quietly and can help lower energy bills. This helps staff work in comfort and gives customers a better experience.
We have more than 15 years of experience installing air conditioning for businesses. Our team works safely and keeps work areas clean. We also plan each job to limit disruption to your business.
If you need a new system or want to upgrade an old one, our Hertfordshire team can help. Contact us today to arrange a free site survey and quote.
Why Choose Subcooled Air Conditioning?

With over 15 years of experience, we provide reliable air conditioning services at fair prices. Along with energy efficient solutions for homes and businesses.
Our trained engineers install, service and repair air conditioning systems. Working across homes, offices and industrial spaces. Every job is completed with care to make sure your system works correctly.
If you need help with air conditioning, our team is ready to assist. Contact us today for a free quote or to arrange a visit. We are here to help keep your space cool throughout the year.
Hertfordshire Air Conditioning FAQs
Do you work with both homes and businesses in Hertfordshire?
Yes. We install air conditioning in homes, offices, shops, restaurants, warehouses and other commercial buildings across Hertfordshire. Each system is planned around the size of the property, how the rooms are used and the level of cooling or heating needed.
What types of air conditioning systems do you install?
We install a range of systems, including wall mounted split units, multi-split systems and ducted air conditioning. We can provide a single unit for one room or a larger system that controls the temperature across several areas.
Our team will assess your property and explain which option is best suited to your space, budget and daily needs.Do you provide a servicing and maintenance?
Do you provide servicing and maintenance?
Yes. We offer one-off services as well as ongoing maintenance plans. A service may include cleaning filters and coils, checking refrigerant levels and testing the system to make sure it is working correctly.
Regular care can improve performance, reduce energy waste and help identify small faults before they lead to a breakdown.
Can you repair an existing air conditioning system?
Yes. Our engineers can inspect and repair many different air conditioning faults. From poor cooling, unusual noises, leaks and units that will not switch on. We work with a wide range of makes and models.
Once we find the cause of the problem, we will explain the repair needed and provide clear advice on the next steps.
How energy efficient is modern air conditioning units?
Modern systems are designed to provide effective temperature control while using less energy than many older units. Inverter technology allows the system to adjust its output rather than repeatedly switching on and off at full power.
The correct system size, professional installation and regular servicing can also help keep running costs under control.
Can air conditioning heat my property as well as cool it?
Many modern air conditioning units can provide both heating and cooling. They work as air-to-air heat pumps, allowing you to warm a room during colder months and cool it during summer.
This can be useful for bedrooms, home offices, shops and workspaces that need reliable temperature control throughout the year.
Do you provide free air conditioning quotes in Hertfordshire?
Yes. We provide free, no-obligation quotes for new air conditioning installations. Our team can visit your property, review the rooms you want to heat or cool and discuss the most suitable system options.
Your quote will be based on the equipment required, the layout of the property and the work involved in completing the installation.
How long does an air conditioning system last?
A well-installed air conditioning system can often last between 10 and 15 years, although its lifespan will depend on how often it is used and how well it is maintained. Commercial systems that run for long periods may require more frequent care.
Regular servicing, filter cleaning and prompt repairs can help the system remain reliable for longer.
Will air conditioning increase my energy bills?
Using air conditioning will add to your electricity use, but modern systems are designed to operate efficiently. The final running cost will depend on the unit, room size, temperature setting and how often the system is used.
Choosing the correct size of system and keeping doors and windows closed while it runs can help reduce wasted energy.
Is air conditioning noisy?
Modern indoor air conditioning units are designed to run quietly, making them suitable for bedrooms, offices and meeting rooms. Many systems also include low-noise or sleep settings for use at night.
Outdoor units do produce some sound, but careful positioning can help reduce disturbance to you and nearby properties.
How long does air conditioning installation take?
A straightforward single-room installation can often be completed within one day. Larger multi-room or commercial systems may take longer. Due to more units, pipework and electrical work.
After surveying the property, our team can explain the likely time it will take. Planning the work to keep disruption to a minimum.
Open 24/7 - Available
Emergency air conditioning repair hertfordshire services 24 hours a day, seven days a week.
Satisfaction Guaranteed
We offer 100% satisfaction guarantees on all Air-conditioner & Heating services. We are proud to be rated over 4 stars on Google Reviews.
Professional Technicians
Our expert engineers prioritise your safety, welfare, and comfort at all times. They are certified, highly experienced, and dedicated to providing exceptional customer service.
Installation, Service & Maintenance 24/7
Testimonials
What Our Client Says
Happy to refer Subcooled to anyone in the future! Lima's
