Business Details
19 Years
experience
Emergency
services
Professional Gas & Plumbing Services in Watford
Established in 2007, John Mac Heating is a family-run Gas Safe registered business with over 25 years of combined industry experience. Our team specialises in boiler installations, landlord gas safety certificates, and comprehensive plumbing solutions across Watford and surrounding areas. We maintain membership with the Institute of Plumbing & Heating Engineering, ensuring adherence to the highest technical standards. Our commitment to ongoing manufacturer-certified training guarantees expert advice on modern heating systems.With a client base spanning private homeowners, landlords, and housing associations, we prioritise transparent communication and impartial guidance on legislative compliance. Our 15-year boiler warranties and 24-hour emergency response service reflect our dedication to customer satisfaction. We operate with full accountability, offering guarantees on all workmanship and maintaining strict compliance with safety regulations.
Services
Boiler Installations
Gas Safety Certificates
Power Flushing
Plumbing Repairs
Electrical PAT Testing
Landlord Services
Emergency Repairs
Central Heating
Unvented Systems
Thermostat Installation
Details
- Year established: 2007
Highlights and features
- Gas Safe registered with 25+ years combined industry experience
- 15-year manufacturer warranties on boiler installations
- 24/7 emergency breakdown service available
- Electronic CP12 certificates issued within 24 hours
- Comprehensive training with major boiler manufacturers
Associations and certifications
- Gas Safe Register
- Institute of Plumbing & Heating Engineering
What people say
Prompt response
Professional and efficient
Complete peace of mind
Honest and reliable
Excellent service
Services
Boiler Installations
We supply and fit A-rated condensing boilers with 15-year warranties. Our Gas Safe engineers assess property requirements and install complete central heating systems. All installations include system flushing, filter fitting, and building regulations compliance certification.
Gas Safety Certificates
Specialist CP12 certification for rental properties. We provide electronic PDF certificates within 24 hours and direct tenant communication. Our inspections include appliance safety checks and remedial work options with no-obligation quotes.
Power Flushing
High-pressure system cleaning to remove sludge and corrosion. Recommended for new boiler installations or inefficient heating systems. Improves radiator performance and extends boiler lifespan while maintaining warranty validity.
Plumbing Repairs
24-hour response for burst pipes, leaks, and heating failures. We carry extensive parts stock for immediate repairs. Services include radiator replacement, valve fitting, and stopcock maintenance with guaranteed workmanship.
Electrical Testing
Portable appliance testing for landlords and businesses. Our qualified engineers test electrical equipment safety and provide detailed compliance reports. Available as part of comprehensive property maintenance packages.
People
John MacEneaney
Technical Director
Qualified gas engineer with 25+ years' experience. Former British Gas employee of the year and certified trainer. Specialises in complex heating system diagnostics and unvented cylinder installations. Holds NVQ qualifications in plumbing and gas engineering.
Abbie MacEneaney
Office Manager
Handles client communications and appointment scheduling. Former branch manager at TUI and lettings manager at award-winning agency. Background in sales and customer service. Manages accounts and marketing operations part-time.
Questions
Are you Gas Safe registered?
Yes, we're fully Gas Safe registered (UK's official gas registration body) and hold Institute of Plumbing & Heating Engineering membership for plumbing work.
Do you offer emergency repairs?
We provide urgent boiler and heating repairs with 24-hour availability for critical issues like burst pipes or heating failures.
What areas do you cover?
We serve Watford, Harrow, Rickmansworth, Hemel Hempstead, and surrounding areas in Hertfordshire and North West London.
How quickly do you issue gas certificates?
All Landlord Gas Safety Certificates (CP12s) are emailed as PDFs within 24 hours of inspection, usually the same day.
Do you guarantee your work?
We offer minimum 2-year guarantees on boiler installations, with many manufacturers providing up to 15-year warranties.
Can you help with unvented cylinder installations?
Yes, we're G3 registered for unvented hot water systems and supply/install compliant thermal storage units.
Reviews (2)
Adam Sarah Marshall
Aug 01, 2023
Report
John is fantastic! He's professional, knowledgeable, skilled, honest, and a thoroughly nice guy! He serviced our boiler after we switched from a well-known big company. We'll definitely continue to use his services with confidence. If any issues arise, we know he's just a phone call away and can resolve them honestly, reliably, and at a fair price everything you could ask for! Cheers, John. Bravo!
Belinda Sealy
Oct 09, 2019
Report
John Mac Heating provides outstanding service with rapid responses, always going above and beyond, and offers very reasonable prices. What more could you want? Thank you, John Mac Heating!
