Endorsed by Which?

Certified Group LTD

4.8

123 Reviews

Opening Hours
Today - 24 hours
  • Monday - 24 hours
  • Tuesday - 24 hours
  • Wednesday - 24 hours
  • Thursday - 24 hours
  • Friday - 24 hours
  • Saturday - 24 hours
  • Sunday - 24 hours

About

Welcome to Certified Group Limited,

Affiliated with Certified Gas Heating Limited.

Established in 2012, A fast-growing company with an impressive reputation accommodating your plumbing, heating and gas constructively. Over the recent years we have started to offer additional services which include: Electrical, renewables, drainage, carpentry, roofing, property renovations, Loft conversions and kitchen extensions, thus the reason for the name change as it fits our image at present. We at Certified Group are known for being passionate, driven, professional and organised tradesmen at all times. We are approved contractors rated a “5 Star company for quality services” on platforms such as Which Trusted Trader, Trust Pilot and Checkatrade etc.
Ourselves at Certified group have a remarkable track record for our hard work, performance, quality, customer service and efficiency.We are based in Greenwich/London as well as Dartford/Kent and we cover the whole of the capital including the surrounding areas.

What we do

  • Heating contractors

    • Central heating systems (installation and servicing)
    • Immersion Heaters
    • Automated Heating
  • Plumbers

    • Emergency plumbing services
    • Unvented cylinder installation and maintenance
    • Water softener installation and maintenance
  • Boiler, central heating and gas engineers

    • Boiler installation
    • Boiler repair
    • Boiler servicing
    • Radiators and central heating
    • Gas cooker installation
    • Gas cooker repair
    • Gas emergencies
    • Gas fire repair and servicing
    • Gas safety testing and inspection
    • Immersion Heaters
    • Power flushing
    • Underfloor heating
  • Gas installers

    • Gas Fires
  • Builders

    • Extensions
    • Garage conversions
    • Loft conversions
    • Plastering
  • Electricians

    • Electric Showers
    • Electrical emergency services
    • Electrical installations
    • Electrical repairs
    • Electrical testing services
    • Landlord safety certificates
    • Fuse boards
    • Outdoor electrical wiring
    • Rewiring
  • Drain clearance contractors

    • Blocked drains
    • Drain and sewer services
    • CCTV drain surveys
    • Drain installation
    • Emergency drain clearance service
  • Property refurbishment contractors

  • Building construction contractors

    • Basement Waterproofing
    • Basement conversion
    • Building construction management
  • Bathroom fitters

    • Accessible bathrooms and showers
    • Wet rooms
    • Electric Showers
    • Bathroom Installation
    • Bathroom design services
    • Bathroom refurbishment
    • Bathroom suppliers
    • Bathroom tiling
  • Kitchen fitters

    • Kitchen design
    • Kitchen installation
    • Kitchen refurbishment
    • Kitchen tiling
    • Kitchen worktops
    • Granite Worktops
  • Carpenters

    • Joinery and carpentry
  • Tile fitters and showrooms

    • Bathroom tiling
    • Floor tiling
    • Kitchen tiling
  • Roofers

    • Flat roofing
    • Roof and skylights
  • Glaziers

    • Double glazed units
    • Double glazing installation
    • Aluminium Windows
    • Double glazing repair
    • Glass boarding up and replacement
    • Replacement window services and repairs
    • Sash windows
    • UPVC Windows
    • Timber windows
    • Triple Glazing
    • Velux windows
    • Window consultants
  • Doors

    • Bi-fold doors
    • Composite doors
    • Door repairs
    • French doors
    • Front door
    • Patio doors
    • Timber doors
    • UPVC doors
    • ​Aluminium doors
  • More Services

    • re-roofing
    • roof refurbishment

Customer reviews

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4.8
123 reviews
Customer Service
4.9
Quality
4.9
Value
4.7
Sort by
A second excellent job
Customer Service
Quality
Value
Work was replacing three radiators and adding a new one. Quality excellent as for previous job, courteous and good time-keeping. In addition, communication was great. I was kept up-to-date on progress and always had prompt response to any queries.
Customer in Greater London Posted on 11/01/2019 , work completed 10/01/2019
My review
Customer Service
Quality
Value
Excellent and prompt.
Gerard, London Posted on 12/12/2018 , work completed 12/12/2018
Cooker installation.
Customer Service
Quality
Value
All 100% satisfactory. A visit that had to disrupt a day was in fact a pleasure.
Timothy, London Posted on 07/12/2018 , work completed 07/12/2018
Professional
Customer Service
Quality
Value
Communication was excellent, very clean and tidy (during, before and after), work to a high standard.
Gibson, Surrey Posted on 31/10/2018 , work completed 31/10/2018
Friendly & professional.
Customer Service
Quality
Value
Certified Gas Heating replaced our very outdated Central Heating System just before winter. They were courteous, professional and very mindful of our family home. Work was completed in the agreed timeframe. Highly recommend.
Rebecca, London Posted on 30/10/2018 , work completed 30/10/2018
Hardworking and thorough.
Customer Service
Quality
Value
Aziz and his team came out after our boiler stopped working properly. They identified serious problems with the previous installation and had to replace it. They were very hardworking, starting early and finishing late, kept the house very tidy and did a thorough job with the installation.
Christopher, London Posted on 18/10/2018 , work completed 18/10/2018
A great service
Customer Service
Quality
Value
Aziz and his team fitted a new boiler in my home this week. They stuck to the agreed price, kept me informed as the work went on, were punctual and left the house spotless every afternoon. All of the team are approachable, polite and clearly well skilled tradesman.
Paul Y Posted on 07/09/2018 , work completed 07/09/2018
Professional and friendly
Customer Service
Quality
Value
A fault with our boiler was diagnosed quickly and a repair was organised. The service was friendly and I was kept informed of what was being done.
Edward, London Posted on 28/07/2018 , work completed 28/07/2018
Shower unit replacement
Customer Service
Quality
Value
The work was completed to agreed schedule and budget. Both engineers were polite and very helpful. They stayed on premises until system was fully replenished and new unit fully tested. Reg carried out an additional investigation with some helpful suggestions on how to resolve an existing issue with getting hot water to the upstairs shower unit. Standard of installation and supplied unit was excellent.
Which? Trusted Traders Consumer Posted on 13/07/2018 , work completed 13/07/2018
These guys are amazing!
Customer Service
Quality
Value
Aziz and his team recently undertook some major work on our home, including the complete removal of existing kitchen and slate floor, installation of underfloor heating, plumbing in of new boiler and relocation and replacement of pipe work throughout our four storey house. They also helped us find a plasterer and painter and managed that work alongside the building and gas works. Everything went very well, and we are thrilled with our new boiler, floor, gas works and kitchen. I felt as though the project and our property was in completely safe hands throughout. They made the whole thing as stress free as possible for us. Aziz was calm and careful throughout and the workmanship was of the very best quality and always undertaken with the utmost care for our home. They were friendly, understanding, nothing was too much trouble. I have absolutely no hesitation in recommending them and will in fact be using them again in the future to renovate our bathrooms. They are a great group of guys, really know their stuff, and are 100% customer focused. Thank you so much Aziz, Kebba and the rest of the team.
AmandaFH Posted on 12/07/2018 , work completed 12/07/2018