Gas Safe Registered
Licence No. 936121
Hertfordshire's Trusted Plumber& Heating Engineer
Covering Watford, St Albans, Hemel Hempstead and all of Hertfordshire. Boiler installations, repairs, central heating and emergency call-outs — 24 hours a day, 7 days a week.
Gas Safe Registered
No. 936121
5-Star Rated
Google Reviews
24/7 Emergency
Burst pipes & boilers
Hertfordshire & London
All areas covered
Phone & WhatsApp Quotes
Free, no obligation
What We Do
Our Plumbing & Heating Services
Boiler Installation
A-rated boilers fitted with up to 10-year manufacturer guarantee. Vaillant Advance Installer. Worcester Bosch, Ideal & Baxi also installed.
Boiler Repair & Servicing
Same-day boiler repairs across Hertfordshire & London. Annual service plans to prevent unexpected breakdowns.
Central Heating
Full system design, installation and upgrades. Convert from old back-boilers or extend existing systems.
Radiator Installation
New radiator fitting, replacement and balancing to maximise heat output and efficiency.
Emergency Plumber
24/7 emergency call-out across Hertfordshire & London. Burst pipes, leaks and boiler breakdowns — we're on call.
Bathroom Installation
Complete bathroom design and installation. Full project management from strip-out to final finish.
Power Flushing
Remove sludge and limescale — essential in Hertfordshire's hard water areas (300–400ppm). Restore efficiency.
Water Softeners
Protect your boiler and plumbing from Hertfordshire's hard water. Installed, commissioned and serviced.
Why C A Waters?
Hertfordshire & London's Trusted Heating Specialist
Established in 2022 and based in Watford, we bring over 10 years of combined industry experience to every job — from a dripping tap to a full heating system installation — with the same level of care, skill and professionalism every time.
- Gas Safe registered (No. 936121)
- Established 2022 — Watford-based
- 5-star rated on Google
- Same-day and 24/7 emergency call-out
- Fixed prices — no hidden charges
- All work fully insured and guaranteed
- Vaillant Advance Installer
- Specialist in Hertfordshire hard water issues
Simple Process
Getting Your Job Done Is Simple
Call or WhatsApp for a Quote
Ring us on 0208 092 1359 or message us on WhatsApp. We'll discuss your requirements and give you a free quote over the phone or via WhatsApp, then book an appointment that suits you.
Our Engineer Attends & Diagnoses
Our Gas Safe registered engineer arrives at the agreed time, attends to the issue, and either resolves it on the spot or — for larger works — agrees a fixed written price before proceeding. A standard call-out fee applies.
Job Done, Guaranteed
We complete the work to the highest standard, leave your property clean and tidy, and back our workmanship with a 6-month guarantee.
Customer Reviews
What Our Customers Say
Hertfordshire Has the Hardest Water in England
At 300–400ppm, Hertfordshire's hard water silently destroys boilers, coats pipes in limescale and cuts heating efficiency by up to 15%. A water softener is the most effective long-term solution — protecting your boiler, appliances and pipework from the inside out.
Service Area
We Cover All of Hertfordshire
Based in Watford, we cover every town and village across Hertfordshire and London areas including Barnet, Edgware, Finchley and Enfield.
Need an Emergency Plumber in Hertfordshire or London?
Burst pipe? Boiler breakdown? No hot water? We're on call 24 hours a day, 7 days a week — including bank holidays.
Mon–Sun: 8am–6pm · 24/7 Emergency Call-Out
Got Questions?
Frequently Asked Questions
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 Plumbing & Heating 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.
Based in Watford
Serving All of Hertfordshire & London
Get in Touch
Request a Quote
Free quotes over the phone or WhatsApp — or use the form below.