Black Mammoth Plumbing and Heating Ltd
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 review9.89 /10
Based on 18 reviews over the past 12 months
Quality of work
9.89
Reliability
9.83
Communication
9.94
Reviews (80)
10 Highly professional plumber
Posted 16 February
Slava was highly professional and arrived on time. He fixed my plumbing problem and explaining exactly what was wrong. I would highly recommend him and will definitely use him againVerified reviewerJob location: KT110 Highly recommend
Posted 16 February
Job location: TW12Slava was polite, on time, communicative. He solved the problem in a much quicker and cost effective way than then previous quote we had had!! Thank you- OOleg F
10 Fixing underfloor heating
Posted 17 January
Great professional, will highly recommendVerified reviewerJob location: KT2Response from Black Mammoth Plumbing and Heating Ltd
Thank you for your review. I hope uou heat pump running well
10 Excellent work
Posted 06 January
Job location: TW3Great job done by Slava on our water heating equipment. Punctual, very friendly and good communication. I would highly recommend and will use their service again in the future.Response from Black Mammoth Plumbing and Heating Ltd
Thank you for your review. I really appreciate it
10 Plumbing excellence!
Posted 05 January
Absolutely flawless experience: quick (but thorough) damage assessment and work carried out timely and with extreme professionalism. I won’t hesitate to call Slava again in the future!Verified reviewerJob location: TW3Response from Black Mammoth Plumbing and Heating Ltd
Thank you Antonio
- JJonathan L
9 Repaired my water heating equipment
Posted 19 November 2025
Good work carried out by experienced, reliable people. I will be giving them more work in the futureVerified reviewerJob location: SM5Response from Black Mammoth Plumbing and Heating Ltd
Thank you Jonathan. Happy to help any time.
Photos
Company Info
Owner
Mr Viaceslav Mamontov
Ltd Company
4 years on Checkatrade
VAT Registered
No
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
This trade passed up to 12 Checkatrade vetting checks
Member since November 2022
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