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Black Mammoth Plumbing and Heating Ltd

9.81/10

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

9.81 /10

Based on 22 reviews over the past 12 months

Quality of work

9.73

Reliability

9.86

Communication

9.83

Reviews (74)

  • Nina H
    10

    Power flush

    Posted 29 October

    Slava and his apprentice carried out a power flush of our system. They were wonderful - very responsive, prompt, helpful, friendly and carried out the work efficiently. Highly recommend
    Verified reviewer
    Job location: SW14
  • Nathan G
    10

    Proper Plumbing

    Posted 24 October

    Great company, great communication and super fair prices. Arrived when expected and got the job done with no nonsense to a high standard. Thank you guys.
    Verified reviewer
    Job location: W4
  • 10

    Reliable & knowledgeable

    Posted 10 October

    Macerator repair- although this was not the diagnosis I had given prior to attending the job there was no problem in completing the job then and there- quickly and efficiently. Would recommend for reliable, knowledgeable and tidy works.
    Verified reviewer
    Job location: SW16
  • 9.67

    Excellent company.

    Posted 19 August

    I'm very happy with the work done by Black Mammoth. Slava was very professional, informative and helpful. A pleasure to have him in the house. Price was also good.
    Verified reviewer
    Job location: SW6
  • 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

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 November 2022

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