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Black Mammoth Plumbing and Heating Ltd

9.83/10

London

Checkatrade member since November 2022

Services

  • General Plumbing
  • Underfloor Heating Installation
  • Radiator Installation
  • Unvented Hot Water Cylinder Installation
  • Water Supply Pipe Repairs
  • Thermal Dynamics
  • Water Leak Detection
  • Shower Installation
  • Power Flushing
  • Plumbing Repairs
  • Water Pumps Installation
  • Tap Repair
  • Blocked Sinks
  • Blocked Baths
  • Blocked Toilets
  • Pipe Fitter
  • Emergency Plumber Service
  • Bathroom & Kitchen Plumbing
  • Radiator Repair
  • Radiator Thermostat Valve Installation
  • Radiator Thermostat Valve Repair
  • Shower Repair
  • Underfloor Heating Repair
  • Unvented Hot Water Cylinder Servicing / Repair
  • Water Pumps Repair

Customer Reviews

Write a review

9.83 /10

Based on 26 reviews over the past 12 months

Quality of work

9.69

Reliability

9.92

Communication

9.79

Reviews (70)

  • 10

    Boiler & hot water cylinder installation

    Posted 24 June

    Slava and Black Mammoth have investigated and resolved multiple issues at my residential property over the last 3 years. This has covered problems with the boiler, radiators, bathrooms, and leaks, to name a few. Regardless of the issue at hand, I have always had a great experience and his approach has been consistent - timeliness, high standard of work, personable, knowledgeable, transparent, takes the time to explain issues and remediation steps, whilst offering good economic value. The most recent work completed was a new replacement of my faulty boiler and hot water cylinder.
    Verified reviewer
    Job location: SW6
  • 10

    Dish washer repairs & drain unblocking

    Posted 24 June

    Professional experience with good communication on availability and when Slava would attend the property. Carried out work in a timely and clean manner, would recommend his plumbing services to others.
    Verified reviewer
    Job location: SW15

    Response from Black Mammoth Plumbing and Heating Ltd

    Thank you for your feedback. I hope your dishwasher is sorted now

  • 10

    Boiler Replacement

    Posted 02 June

    Slava was excellent, quick to respond, communicative, explained several options and was very clean
    Verified reviewer
    Job location: SW13
  • 10

    Fixed our hot water

    Posted 19 May

    Had Slava come out and fix our hot water for us. He was really nice and sorted the problem out really quickly, will be calling on him again in the future.
    Verified reviewer
    Job location: SW19

    Response from Black Mammoth Plumbing and Heating Ltd

    Thank you for your kind review – I really appreciate you taking the time to share your experience!

  • 10

    Unvented hot water cylinder installation

    Posted 11 May

    I recently had a hot water cylinder installed, and I couldn’t be more pleased with the service. Slava was professional, punctual, and extremely knowledgeable. The installation was completed efficiently and to a high standard. He took the time to explain everything clearly and made sure everything was working perfectly before leaving. I would definitely recommend him to anyone needing plumbing or installation work. Great job!
    Verified reviewer
    Job location: UB7

    Response from Black Mammoth Plumbing and Heating Ltd

    Thank you for your kind review – I really appreciate you taking the time to share your experience!

  • 10

    Change of Thermostat Cartridge

    Posted 24 April

    Slava reached out to me promptly for appointment, he came to check the issue and performed a proficiency assessment. Offer solution by replacing the cartridge and got part very quick to catch up my schedule.
    Job location: SW20

    Response from Black Mammoth Plumbing and Heating Ltd

    Thank you for your kind review – I really appreciate you taking the time to share your experience!

Photos

Company Info

Owner

Mr Viaceslav Mamontov

Ltd Company

3 years on Checkatrade

VAT Registered

No

Domestic WorkCommercial WorkCards AcceptedInsurance Work Undertaken24 Hour Call-outFree Estimates

We are a trusted, local plumbing company based in South West London, committed to delivering the highest quality service with a seamless and stress-free experience. Whether you need expert plumbing, boiler servicing, central heating repairs, or waste system installations, we bring a detail-oriented, customer-first approach to every job.


With over 10 years of hands-on experience in domestic and light commercial work, I am a fully qualified Gas Safe registered engineer, holding WRAS certification and a Level 3 Diploma in Plumbing and Domestic Heating (City & Guilds). My services cover everything from routine maintenance and landlord safety checks to emergency plumbing call-outs and fault diagnostics. I am fully insured and compliant with the latest building and gas safety regulations.


We pride ourselves on punctuality, transparency, and workmanship that stands the test of time—earning the trust of homeowners, landlords, and property managers across South West London.

Accreditations and awards

CITY & GUILDS
CITY & GUILDS
bpec Certification Ltd
bpec Certification Ltd

This trade passed up to 12 Checkatrade vetting checks

Member since 2022

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  • County court judgement

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  • Company trading history

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  • County court judgement

  • Enhanced business check

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