Hertfordshire's Trusted Heating & Cooling Engineer

Boiler installation costs typically range from £1,500 to £3,500 depending on the boiler model, system type and any additional pipework needed. We provide free quotes over the phone and WhatsApp — call 0208 092 1359 or message us.

Yes. C A Waters Heating & Cooling is fully Gas Safe registered (No. 936121). You can verify our registration at any time on the Gas Safe Register website. All our gas work is certified and compliant with current UK regulations.

Yes. We offer a 24/7 emergency call-out service across Hertfordshire and London. Whether it's a burst pipe, boiler breakdown or gas leak, call us on 0208 092 1359 and we'll get to you as quickly as possible.

Hertfordshire has some of the hardest water in England at 300–400ppm. Over time, this causes sludge and limescale to build up inside your radiators and boiler, reducing efficiency and leading to cold spots. A power flush removes this buildup, restoring your system's performance and extending its life.

We cover all of Hertfordshire including Watford, St Albans, Hemel Hempstead, Stevenage, Hatfield, Welwyn Garden City, Hertford, Rickmansworth, Harpenden, Berkhamsted and many more towns. We also cover London areas including Barnet, Edgware, Finchley, Enfield and Mill Hill.

Most boiler installations are completed within one day. If the job involves significant changes to pipework, flue routing or a full system upgrade, it may take two days. We'll give you a clear timeline when we provide your phone or WhatsApp quote.

Yes. We install, repair and service split system air conditioning units across Hertfordshire and London. We are Refcom F-Gas certified (REF1026552), which is required by law to handle refrigerant gases. Whether you need a new system installed or an existing unit serviced, call us for a free quote.

F-Gas (fluorinated gas) certification is a legal requirement for any engineer who handles refrigerant gases used in air conditioning and heat pump systems. Without it, engineers cannot legally purchase, handle or recover refrigerants. C A Waters Heating & Cooling holds Refcom F-Gas certification (REF1026552), so all our air conditioning work is fully compliant with UK F-Gas regulations.

Air conditioning installation costs vary depending on the number of indoor units, the complexity of the installation and the make and model of the system. A single split system typically starts from around £1,200–£2,000 fully installed. We provide free, no-obligation quotes over the phone or WhatsApp — send us details of your property and requirements and we'll come back with a fixed price.