1st Call Plumbers
Underfloor Heating Specialists. 1st Call Plumbers has been vetted and approved by TrustATrader. Covering Northwood, Pinner, Bushey, Watford, Harrow, Harefield and surrounding areas
Membership number TT23528
Don't forget! Please mention TrustATrader when you contact any of our trusted traders.
All TrustATrader members are checked and vetted!
Get extra peace of mind and cover your next agreed job with this trader for free by registering for the TrustATrader Guarantee. Find out more
Register GuaranteeAbout 1st Call Plumbers, Watford
1st Call Plumbers is a trusted, professional firm of Gas Safe registered engineers based in Hertfordshire, with over 28 years’ experience in central heating installation, servicing and repair. We specialise in all types of central heating systems and general plumbing work, prioritising safety, compliance and customer satisfaction. All our engineers hold recognised trade qualifications and are Gas Safe registered.
Services offered:
- General plumbing
- Boiler service
- Boiler repair
- Boiler installation
- Boiler breakdown
- Power flushing
- Central heating maintenance
- Central heating upgrade
- Radiator installation
- Unvented systems
- Hot water cylinders
- Safety certificates
- Landlord certificates
Professional accreditations and memberships:
- Gas Safe
- DBS – The Disclosure and Barring Service
- Vital Skills – Asbestos Awareness
- UK Certification Ltd – Certificate of Competence for Individual Gas Fitting Operatives
- LOGIC Certification
- City & Guilds qualifications
Whether you need a minor boiler repair or a full central heating installation, we deliver high-quality, safe solutions for jobs of all sizes across Hertfordshire. For a no‑obligation quote, please get in touch and remember to mention TrustATrader when calling.
Photo gallery
1st Call Plumbers
- Identification checked
- Company address verified
- Customer references checked
- Agreed to TrustATrader's high standards
- Agreed to complaints procedure
Insurance details
| Type | Plumbing and heating |
|---|---|
| Provider | Simply Business |
| Verified | 17th February 2026 |
Hertfordshire
Qualifications
- DBS - The Disclosure and Barring Service
- Vital Skills - Asbestos Awareness
- UK Certification Ltd - Certificate of Competence for Individual Gas Fitting Operatives
- LOGIC Certification
- City & Guilds Qualifications
Associations
Reviews (12)
-
Average rating: 4.67 out of 5
Review by Lorraine
on 23rd February 2026
"Very friendly and goes the extra mile."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 4 out of 5.0
- Cleanliness Cleanliness: 4 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
-
Average rating: 5.0 out of 5
Review by Ria Bignell
on 5th February 2026
"Fantastic work ! Very efficient ! And a quick and effective job, thank you"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
-
Average rating: 5.0 out of 5
Review by Sam
on 27th January 2026
"Mark is very polite, calm and a highly committed worker. He's very amenable to our requirements - I have used him for the past 5 years and highly recommend him."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
-
Average rating: 5.0 out of 5
Review by Charlotte Speirs
on 5th January 2026
"Very reliable and honest."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0