Welcome to 1st Call Plumbers
1st Call Plumbers
Watfords Heating Experts
Watfords
Heating Experts
We are Gas Safe approved heating engineers serving all of Greater London, Hertfordshire and nearby areas.
Get in touch for a free quote for any job small or large.
We are Gas Safe approved heating engineers serving all of Greater London, Hertfordshire and nearby areas. Get in touch for a no obligation quote for any job.
Best Rates
Affordable rates that provide exceptional value
Top Quality
Exceptional work with close attention to detail
Full Cover
Comprehensive insurance for your peace of mind
Fast Service
Fast and reliable support whenever you need it most
About us
We Have 35+ Years Of Experience In Providing Quality Heating Services
Here at 1st Call Plumbers, our Watford-based team truly cares about making our customers happy and takes immense pride in our work. We always go the extra mile to deliver great, reliable results.
All jobs are backed by £2 million public liability cover to protect our clients and maintain high standards.

Get A Free Quote Today
Services
View Our Services
Explore our range of services tailored to meet your needs with quality and expertise every step of the way.
View more services
System Flushing & Descaling + Powerflush Central Heating + Smart Thermostat Installation + Heating System Balancing + Boiler Efficiency Upgrades + LPG Boiler Servicing + Oil Boiler Servicing + Solar Thermal Heating Integration + Combi Boiler Conversion + System Expansion/Pipe Extension + Leak Detection & Repair + Pressure Relief Valve Installation + Magnetic Filter Installation + Hot Water Cylinder Installation + Unvented Cylinder Servicing + Bleeding Radiators + Radiator Valve Replacement + System Commissioning & Testing + Heating Controls & Zone Installation + Annual Boiler Servicing Plans + Leak Detection + More
























1st Call Plumbers
Find Out Where We Offer Our Services
We provide our services throughout all of Greater London, Hertfordshire and nearby areas. If you are outside our usual area, please contact us as we can still assist with specific projects.
Harrow
Northwood
St Albans
Bushey
Chesham
Pinner
Ruislip
Borehamwood
Hemel Hempstead + Rickmansworth + Uxbridge + Edgware + Surrounding Areas
Gallery
See Our Projects
Take a look at our past projects to see how we bring ideas to life with precision and dedication.
Testimonials
Read Our 40+ Reviews
Read what our clients have to say about their experiences and why they trust us with their projects.
Hear from our happy customers. Read all our reviews on Rated People.
★★★★★
A genuine pleasure. Mark was quick and was able to identify the problem and fixed the pump with little fuss. I'll certainly use his services again.
Darryll
★★★★★
Mark was professional and undertook the boiler replacement with speed as he was aware of my plight.He quoted a fair price and was accommodating and I was very pleased with him and the quality of work.I would strongly recommend him and would of course be contacting him re any other work in the future.
Richard
★★★★★
Came out really quickly, explained what the problem was and fixed it. Showed me what to look for if it happened again. Only cost was the fixed call out charge which whilst not cheap was a lot less than I thought I was going to have to pay out.
Kath
★★★★★
Mark was professional and very knowledgeable. He chose the correct boiler. He came as promised on time and finished the job to my satisfaction. All the legal and other documents were provided to me promptly. I recommend him.
Oswald
1st Call Plumbers
We Deliver Work That Exceeds Expectations
Happy Clients
Projects Completed
Years Experience
Emergency Jobs
Quick Answers To Common Questions
Check out our FAQ to find useful answers and helpful information for any questions you might have.
What is your minimum call out charge?
Do you provide emergency call outs?
Yes, we provide emergency call outs. Please give us a call to discuss your situation.
I'm located outside your service area, can you still help?
Under certain circumstances we can provide our services to clients outside our service area on a case by case basis.
Do you do evening and weekend work?












Contact us
Want To Chat?
Call Us
07923 115494
Email Us
info@1stcallplumbers.com
Location
Watford
Opening Hours
Monday - Friday
7:00 am – 5:00 pm
Saturday
7:00 am – 12:00 pm
Sunday
Closed
Get A Free Quote
Request a quote today

Call Us
07923 115494
Email Us
info@1stcallplumbers.com
Location
Watford
We’ll Call You Back
Get A Free Quote
Request a quote today
Call Us
07923 115494
Email Us
info@1stcallplumbers.com
Location
Watford
Opening Hours
Monday - Friday
7:00 am – 5:00 pm
Saturday
7:00 am – 12:00 pm
Sunday
Closed
We are 1st Call Plumbers (“we”, “us”, “our”). We are the controller responsible for your personal data.
Contact us regarding data protection at: info@1stcallplumbers.com.
What we collect – When you use our website, we may collect:
– Details you type into our contact form (e.g., name, email, phone, message).
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– Usage data if you consent to analytics cookies (e.g., pages visited).
Why we use it & Our Lawful Basis:
– To respond to your enquiry submitted via the contact form (Our legitimate interest to run our business).
– To operate our website securely and effectively (Our legitimate interest).
– To understand how visitors use our site using optional analytics, if you consent (Your consent).
– You can withdraw consent at any time by clearing cookies.
How long we keep it – We retain personal data only for as long as necessary to fulfil the purposes we collected it for, including for satisfying any legal, accounting, or reporting requirements. We consider factors like the amount, nature, sensitivity of the data, potential risk of harm, the processing purposes, and legal requirements when determining retention periods. We periodically review the data we hold and securely delete or anonymise it when it’s no longer needed.
Who we share data with – We use essential service providers to help run our site, such as our website hosting provider. If you consent to analytics, data is shared with our analytics provider (e.g., Google Analytics). These providers process data on our behalf based on our instructions. We do not sell your data.
International Transfers – Some of our service providers (e.g., hosting, analytics) may be located or process data outside the UK. When we transfer data internationally to such providers, we ensure legally required safeguards are in place to protect your data. This may include relying on adequacy regulations (countries deemed safe by the UK government) or using Standard Contractual Clauses approved by the UK authorities.
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Your rights – You have rights over your personal data. You can ask us to:
– Show you the data we hold about you.
– Correct inaccurate data.
– Erase your data (in certain circumstances).
– Restrict how we use your data.
– Provide your data in a portable format.
– Object to our use of your data (especially based on legitimate interests).
– To exercise these rights, please use the contact details above. If you have unresolved concerns, you have the right to complain to the UK Information Commissioner’s Office (ico.org.uk).
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