“Keith was fantastic and easy to organise. Great price for a fair bit of work - installed my gas hob, changed some pipework, and installed my dishwasher, 10/10 would use again if needed. Very friendly and helpful”
Public evidence profile · Checked April 2026
Heat and Flow
Review quality
Caution noted
Credentials & registries
Which? Trusted Trader
Trust Score
71out of 100
71 out of 100, with a review caution. The score rests on rated 5.0 from 359 reviews across 2 review sources; the caution flags a review pattern to check before you rely on it.
- Rated 5.0 from 359 reviews across 2 review sources
- Reviewed 8 months ago
How this score is worked out
Rating5.0 / 5
Review volume359
Independent sources2 independent public sources
Credentials1 credential shown
How this score is made up
What customers say49.9 of 60
Independent checks10.7 of 30
Track record10 of 10
See the independent checks
- Licences and credentials0.6 of 8.3
- Ways to reach them7 of 8.3
- Reviewed on more than one site3.1 of 6.2
- Registered company details0 of 4.1
- Photos of their work0 of 2.1
- Industry recognition0 of 1
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
Trust at a glance
2 checksWhat we can verify about Heat and Flow
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
See the full verification checklist for Heat and Flow →Reviews · public evidence
What customers say
These reviews are published independently on the named public sources below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Often reviewed for
Customers often mention
Where these reviews are published
- Checkatrade308 reviews · 5.0 avg
- Which? Trusted Traders51 reviews · 4.8 avg
Highlights
“Keith was able to sort the problem quickly and professionally.”
“Keith was professional and did a diligent job in sorting my boiler out - highly recommend.”
Detailed reviews
These are the individual reviews we hold for Heat and Flow, including the highlights above. The 359 headline total is the review volume reported across public review sources.
Verified by Checkatrade
Fast, professional, personable.
Verified by CheckatradeFixing mains water leak and plumbing in washing machine
We had no mains water and a leak at a property we had just moved into - Keith came out promptly, diagnosed the problems and repaired the leaks. He also helped plumb in our washing machine which was really tricky. He is efficient, friendly and very thorough in his work - carrying out multiple tests to ensure everything was fixed before he left. Highly recommend.
Verified by Checkatrade
When I contacted Keith he identified the cause of the problem at once, came the next day and fixed it. He was competent and very pleasant
Verified by Checkatradeunblocked toilet
Thank you Keith for coming within hours this afternoon to fix a blocked toilet — also for taking the trouble to protect the carpet and the time to make sure the pipe was properly cleared so I wouldn't have to call you out twice. Very friendly service, down-to-earth, and a reasonable charge in the circumstances (under £100). Thank you!
Verified by Checkatrade
Keith Hokan is courteous, timely, extremely hardworking and nothing is too much trouble for him. He will attend on unsocial hours and giving assurance to the householder. I would highly recommended Keith of Heat and Flow, Mitcham for any of your plumbing or heating needs.
Read the other 10 detailed reviews on this pageShow fewer reviews
Verified by CheckatradeNew bath/shower mixer tap required.
Keith quoted for the work required and completed professionally. I found him respectful and friendly and would not hesitate to recommend.
Verified by CheckatradeFixing cistern in loft
Keith arrived with the new part needed done a great job for reasonable price would use this company again
Verified by CheckatradeReplacement immersion heaters
Speedy diagnosis of the fault. Second visit scheduled and works undertaken quickly with no fuss. Highly recommended.
Verified by CheckatradeImmersion Heating system repairs
Quick diagnosis and very accommodating in scheduling the follow up appointment. Highly recommended
Verified by Checkatrade
Heat and Flow installed new radiators everywhere in the house as well as adding new mains and waste pipes for the washing machine in the utility room. The job was done very professionally and quickly. There was no noticeable damage to any of the surrounding areas. I didn’t need to supervise the work and felt very comfortable leaving them a key whilst I was at my office. The pricing was fair and the property was left in an impeccably clean condition with the rubbish cleared out. Highly recommended.
Verified by Checkatrade
Responded quickly to my call. Came and assessed what needed to be done with broken toilet cistern and gave estimate. Came back next day as promised. Work done to specification. Good job. Clean and tidy. Respectful and friendly. Would highly recommend and use again if needed.
Verified by CheckatradeNew boiler installation
The new boiler was installed promptly and professionally. I was given good advice and recommendations. The work took three days and the workers tidied up after themselves every day. Very pleased with the result.
Verified by CheckatradeDecommissioning unused gas tap
I contacted Keith to remove an old unused gas tap near the chimney. It turned out that the pipes near the gas metre also needed to be redone. Keith was very honest and professional throughout the service. I am very pleased with the result.
Verified by Checkatrade
Stopcock and ball valve replaced to remove a noise issue with water tank when filling up. Service was excellent, prompt and workspace was left clean. I thoroughly recommend Keith, I've used his services twice before and would do so again.
Verified by CheckatradeBroken bath tub mixer tap
Sourced Materials and drained system. Removed old bathtub mixer tap and 4 old isolation valves. Cut and adjusted pipes. Renewed isolation valves with four new handled isolation valves. Fitted new bathtub mixer tap.Cleared all air locks.Tested system all ok. Fitted new stop cock on central heating Expansion Tank. I would call on Keith to do more work at a future date as he is very good at his job.
Local context
Rated 5.0, above the local average for plumbers in London
Across 1409 plumbers in London, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Review quality check
Review cautionOne or more review signals need a manual check
Some review signals are flagged for a closer manual check. That doesn't prove fake reviews or any wrongdoing.
Assessed 27 Jul 2026
1 exact and 2 similar review-text patterns found across sources
Review text appears to be reused across more than one source. This is a bounded caution for manual review, not proof of wrongdoing.From customer reviews
What customers consistently say
Recurring themes from 150 customer reviews on Checkatrade.
Respectful and tidy in your home: “the property was left in an impeccably clean condition with the rubbish cleared out.” · Checkatrade, 12 Sept 2023
“The job was done very professionally and quickly.” · Checkatrade, 12 Sept 2023
“Keith has done a couple of jobs for me and he is helpful and friendly and both jobs were done to a high standard.” · Checkatrade, 6 Mar 2023
“Keith was brillant. He completed my boiler inspection in a very professional way” · Checkatrade, 26 Oct 2022
“he is always very reliable and does a great job.” · Checkatrade, 17 Dec 2022
“Keith is very reliable, honest and efficient.” · Checkatrade, 31 Aug 2022
“he carries out the work on time and in a professional manner.” · Checkatrade, 4 May 2022
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source checked
- 25 Jun 2026
Sources
2 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Public evidence last checked April 2026
About
With 308 reviews across Checkatrade and Which? Trusted Traders, Keith at Heat and Flow stands out for his exceptional customer engagement, often resolving issues over the phone before even visiting. Individual reviews highlight Keith's supportive and patient approach, with customers appreciating his willingness to guide them through solutions. Active for 13 years in the London area, Keith is particularly celebrated for his promptness and thoroughness in tasks like installing radiators and resolving plumbing issues. His dedication to customer satisfaction is evident in reviews that describe him as friendly, efficient, and committed to ensuring the job is done right, even under challenging circumstances.
Services they list
Bathroom & Kitchen PlumbingBlocked BathsBlocked SinksBlocked ToiletsGeneral PlumbingPipe FitterPlumbing RepairsRadiator InstallationRadiator RepairRadiator Thermostat Valve InstallationRadiator Thermostat Valve RepairShower Installation
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
Greater LondonMitcham
The areas they list covering on a public directory; confirm they cover your address before you book.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
Approved plumbers on the free WaterSafe register are vetted, qualified to the water regulations and insured. Check they're listed, or find a WaterSafe-approved plumber near you.
Check the WaterSafe registerAgree 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.
Want an extra legitimacy check? Run the Cowboy Checker on Heat and Flow before you contact them.
Run Cowboy Checker →Good to know
Common questions about Heat and Flow
Is Heat and Flow a legitimate business?
Heat and Flow has 359 independent public reviews, rated 5 out of 5, gathered and cross-checked across 2 review sources. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Heat and Flow?
Heat and Flow has 359 public reviews, averaging 5 out of 5, gathered across 2 review sources. You can read the individual reviews and where each came from in the reviews section above.
How do I know Heat and Flow's reviews are genuine?
Heat and Flow's 359 public reviews are gathered and cross-checked across 2 review sources. Reviews spread across several review sources are harder to fake than a single polished page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Is Heat and Flow qualified and accredited?
We hold 1 independently sourced credential for Heat and Flow, including Which? Trusted Trader. Each is attributed to the body that issued it in the credentials section. For example, Which? Trusted Trader is Which? Trusted Trader: an endorsement from the consumer champion Which?, given to traders who pass its assessment process.
What does Heat and Flow specialise in?
Heat and Flow lists specialist services including Bathroom & Kitchen Plumbing, Blocked Baths, Blocked Sinks, Blocked Toilets, General Plumbing, Pipe Fitter. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
How long has Heat and Flow been trading?
Heat and Flow has been reviewed on public sources since 2012.
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