Brennan & Son
Warm homes. Honest hands.
Family plumbing and heating in Southampton — Gas Safe, same-day when it matters, trusted since 1985.
Fast, friendly, and honest.
We show up when we say we will, explain the work clearly, and leave your home warmer than we found it — the way Derek started it in 1985, and the way the third generation still does it today.
- Gas Safe registered
- Est. 1985
- Southampton family firm
- Same-day when possible
Services
What we look after.
Editorial paths into the work we do every week across Southampton — not a brochure grid.
- BoilersServicing, repairs, fault finding and replacements — with an honest assessment first.
- Boiler servicingAnnual Gas Safe servicing to keep your system safe, efficient and in warranty.
- Central heatingInstallations, upgrades, noisy pipes, powerflushing and smarter radiator layouts.
- Kitchens & bathroomsQuality first and second fix plumbing with copper pipework and careful finishing.
- Gas safety inspectionsLandlord CP12 certificates and safety checks across boilers, cookers and fires.
- Repairs & calloutsToilets, taps, leaks, cookers, fires and the jobs that cannot wait.
Our work
Copper where it counts.
Real installs from Southampton homes — tidy pipework, trusted boilers, careful finishing.
As seen with DIY SOS
Southampton volunteers. BBC cameras. Real neighbours.
In October 2025 our team joined more than 150 local tradespeople to help rebuild a family home on DIY SOS. Same craft. Same community.
Proof
What neighbours say when the heat comes back on.
“Justin did an absolutely brilliant job at fixing my boiler the same day. Honest and caring service — I would definitely recommend Brennan & Son.”
“Boiler stopped working at the coldest time of the year. Brennans got to me the same day I called and returned the next day with the part. Cannot fault the service.”
“I needed a company that would take a call from a tenant and resolve it. Since Brennans have looked after my properties I have very few problems. My tenants say they are the best thing since sliced bread.”
“Price was excellent for the amount of work, to a very high standard with real attention to detail. Our house is now very cosy and the new boiler is so efficient.”
The family
Three generations of Brennans.
From Derek on the oil rigs to Heather and Skye — the next generation learning the trade and the office. You always know who you are dealing with.
Justin
Director
Sarah
Office manager
Demian
Engineer
Heather
Plumbing apprentice
Brent
Gas engineer
Need heat sorted?
Call Sarah in the office or send a quick quote request. We will get back to you with clear next steps.