# GRNZ Heating & Plumbing GRNZ Heating & Plumbing is a plumber in Greenford. Rated 5.0/5 from 11 public reviews across 1 review source. This is the MyTrustedTraders public-evidence profile for this trader, with independent reviews, credentials and registry data from named public sources, no ads, and no paid placement. Trust Score: 38 out of 100 (building a public record). The score rests on rated 5.0 from 11 reviews. 3 reviews in the last 12 months. ## About Hello, I'm Pierre Andrews, owner of GRNZ Heating & Plumbing. Based in London, I provide reliable plumbing and heating services across West London, as well as Greater London and beyond. I operate Monday to Friday, with occasional evening and weekend availability. Please note, I only accept phone calls to ensure your inquiry is not missed. With 10 years of experience, including 5 years at Worcester Bosch, I offer expert, hassle-free service. All labor is guaranteed, and I provide manufacturer warranties. Services include: • General Plumbing & Repairs • Radiator & Shower Installations • Gas Boiler Installation & Repairs • Gas Safety Checks (CP12) • Smart Thermostat Installation • Power Flushing For quotes or inquiries, please call. ## Public review evidence (by source) | Source | Average rating | Reviews | | --- | --- | --- | | Which? Trusted Traders | 5.0/5 | 11 | Rated 5.0, above the local average for plumbers in Greenford. Across 10 plumbers in Greenford, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally. Most recent review: 9 months ago. ## What customers consistently praise _Themes mentioned across this trader's own public reviews:_ - Fast & efficient (mentioned in 36% of reviews we've read) - Friendly & polite (mentioned in 36% of reviews we've read) - Professional (mentioned in 36% of reviews we've read) - Punctual (mentioned in 27% of reviews we've read) ## In customers' own words _Verbatim quotes from this trader's public reviews, each attributed to its source:_ > "Contacted Pierre for quote to disconnect gas cooker and cut back redundant gas pipe . He came to see the job promptly and provided detailed itemized quote the same evening. his quote was competitive. On the day he arrived on time. He move the tumble dryer to get to the pipe and did the work efficient and to a high standard. He even moved the old cooked outside for me which was unexpected however appreciated. Asked for advice on boiler and he took time to make helpful suggestion. Its clear he has alot of gas expertise and knowledge. Ill be using him to service my boiler in future and to install a wireless control. Highly recommend him I'm renovating my bathroom later this year and will definitely use him for that." > Source: Which? Trusted Traders Consumer (5.0, via Which? Trusted Traders) > "Had my taps changed. Was done at a good price and work was done fairly quickly. Very happy with the way it turned out." > Source: Which? Trusted Traders Consumer (5.0, via Which? Trusted Traders) > "I had my boiler serviced by a young gentleman, he replace any defective parts and also assisted me with some water pressure issues I was having, was fast and effective and I will be recommending him to family and friends." > Source: Which? Trusted Traders Consumer (5.0, via Which? Trusted Traders) ## Trades Plumber ## Services they list _Listed on public sources or the business's own website; check directly that they cover your job before you book:_ - Gas Fires - Central heating systems (installation and servicing) - Immersion Heaters - Emergency plumbing services - Unvented cylinder installation and maintenance - Water softener installation and maintenance - Boiler installation - Boiler repair - Boiler servicing - Power flushing - Radiators and central heating - Accessible bathrooms and showers ## What we checked, and when _What MyTrustedTraders independently checked for this business (verified items only):_ - Review volume: MyTrustedTraders shows 11 public reviews on this profile. (via MyTrustedTraders public listing) - Public listing spread: MyTrustedTraders shows 1 public listing for this trader. (via MyTrustedTraders public listing) - Business identity: MyTrustedTraders shows public business identity data with operating status unknown. (via MyTrustedTraders public listing) - Contact phone: MyTrustedTraders shows a public phone contact on this profile. (via MyTrustedTraders public listing) Full verification checklist: https://mytrustedtraders.com/traders/grnz-heating-plumbing/checks ## Credentials & sources - Credentials shown: 1 (none currently verifiable) - Companies House status: Unknown - Evidence held from: Which? Trusted Traders - Public evidence last checked June 2026 ## Opening hours - Source: Which? Trusted Traders - Open 7 days a week - Monday–Saturday: 7:30am–9pm - Sunday: 9am–6pm ## Before you hire a plumber _What to check when choosing this kind of trade (general guidance, not a claim about this business):_ - Agree the call-out fee, the hourly or fixed rate, and whether parts are charged on top, in writing, before an emergency plumber starts. Out-of-hours overcharging and 'while I'm here' add-ons are common complaints. - Be wary of a plumber who, on a first visit, says your whole system or boiler must be replaced. Get a second opinion and an itemised quote (parts and labour separately) before agreeing to major work. - Gas and boiler work is a separate, regulated trade, not general plumbing. Make sure anyone working on a gas appliance is specifically registered to do gas work, and ask to see that registration before they start. - For the water-regulations side of plumbing, a WaterSafe-approved plumber is vetted, qualified to the water regulations and insured. You can check yours or find one free at watersafe.org.uk. - Look for consistent reviews across several named sources, not one polished profile. ## Contact - Phone: 07456 791834 --- Source: MyTrustedTraders, https://mytrustedtraders.com/traders/grnz-heating-plumbing Real public evidence only: every figure traces to a named source and is cross-checked. If a source does not carry a field, it is not shown.