
Air Conditioning Sussex
Reliable cooling and heating installed by qualified engineers.
Air Conditioning Installation and Servicing in Sussex
S. Mercer Plumbing provides trusted air conditioning services in Sussex. We install energy efficient air conditioning units and heat pumps for homes and commercial properties, giving you a comfortable environment through the year.
Our team works clean and tidy, offers excellent customer service and delivers clear advice so you always know what to expect. Whether you need a new ac unit, regular servicing or ongoing maintenance, we provide solutions that last and give you peace of mind.
Professional Fitting for Homes and Businesses
We install modern air conditioning systems chosen for performance, durability and efficiency. Every air conditioning installation starts with a site assessment so we can size the system correctly and recommend the best model for your property.
What you can expect from an installation:
- Careful planning and system design
- Clean and tidy pipework and placement
- Full testing before we hand it over
- Clear guidance on controls and daily use
- Advice on annual servicing and long-term care
Our engineers are fully qualified and F-Gas registered which means every installation meets current safety and compliance standards.
Quality Heating and Plumbing Services
S. Mercer Plumbing offers a complete range of plumbing and heating services for domestic and commercial clients in Eastbourne and surrounding areas. Each service is carried out with expert care and tailored to meet the specific needs of the customer.

Air Conditioning Services

Boiler Services

Heating Services
Modern Air Conditioning Options for Your Home or Business
Our team fit a wide range of air conditioners, including popular mini split systems. These units offer precise temperature control, quiet operation and strong performance with regular servicing. Mini split systems are ideal for bedrooms, living rooms, offices, garden rooms and loft conversions.
Why homeowners choose mini split air conditioning systems:
- Fast cooling and reliable heating
- No disruptive ductwork
- Low running costs
- Compact indoor units
- Good air quality with proper maintenance
If you are unsure which ac unit is right for your space, we provide clear recommendations based on your budget and layout.
Heat Pumps in Sussex
Heat pumps offer both heating and cooling and remain an efficient alternative to traditional heating. They extract heat from the outside air which helps reduce energy bills and carbon emissions. We install air source heat pumps for homes across the local area. With the right setup and regular servicing, heat pumps offer long-lasting comfort and steady savings.
Benefits of a heat pump system:
- Heating in winter and cooling in summer
- Lower emissions
- Strong performance with ongoing maintenance
- Long service life
- Simple daily operation






AC Servicing and Maintenance
To keep your air conditioning units running smoothly, we offer full service and maintenance support. Annual servicing helps prevent faults, maintains efficiency and extends the lifespan of your equipment. It also keeps indoor air quality high and ensures your air conditioners remain energy efficient.
Our service and maintenance options include:
- Cleaning coils and filters
- Refrigerant checks
- Electrical safety tests
- System performance checks
- Clearing drainage and airflow paths
Regular servicing is the best way to protect your investment and avoid unexpected breakdowns.
Why Choose Us?
S. Mercer Plumbing is trusted by homeowners and landlords across Sussex. Led by City & Guilds qualified engineer Sam Mercer, we bring deep knowledge and hands-on experience to every project.
Why people choose us:
- Excellent customer service
- Fully F-Gas and Gas Safe registered
- Clean and tidy work on every visit
- No call-out charges in Eastbourne
- Energy efficient systems
- Full insurance cover
- Clear, honest advice
For professional air conditioning services, contact S. Mercer Plumbing today. Get a free quote by giving us a call on 07968 771257 or email sam@smercerplumbing.co.uk.
