Best hot water plumbers in St Marys
Last updatedShipways Plumbing leads this list of hot water plumbers in St Marys because it covers the most types of system and publishes a licence number, with 24/7 cover. The businesses differ mostly on where they are based, which brands they fit and whether they publish a licence number. Bases run from Penrith to North Richmond, so check the service area before booking.
Quick picks in St Marys
- Best for a hot water repair or swap with named brands: Shipways Plumbing, which works on Dux, iStore, Rheem, Rinnai and Thermann systems.
- Best for a Bosch or Vulcan unit: Sigma Plumbing, which also handles heat pump and solar systems.
- Best for hot water and gas work from one business: Black Buck Plumbing & Gas, which does hot water and gas plumbing together.
- Best for a Rheem install with free quotes: Rhino Plumbing & Drainage, which installs Rheem units and offers free, no-obligation quotes.
Best hot water plumbers in St Marys, ranked
#1Shipways Plumbing for hot water repairs and replacements with named brands
24/7Licence publishedBased in PenrithShipways Plumbing is based in Penrith and covers St Marys. The team handles storage, instant, continuous-flow, heat pump and roof-mounted solar units, whether a repair or a replacement is needed. Dux, iStore, Rheem, Rinnai and Thermann systems are all on its list, and it does gas leak checks alongside. Round-the-clock emergency plumbing is listed, and the licence number is 158889C.
#2Black Buck Plumbing and Gas Pty Ltd for hot water and gas work in one visit
24/7Licence publishedBased in Cambridge ParkBlack Buck Plumbing & Gas Pty Ltd is based in Cambridge Park and covers St Marys. Hot water systems get repaired, replaced or upgraded, and gas plumbing and leak detection sit alongside. Homeowners say the crew talks through each repair step before starting. Its 24/7 emergency work sits alongside licence number 383597C. Ask for the fixed-price quote to cover all the work before you agree to start.
#3Rhino Plumbing and Drainage for Rheem installs and 24-hour hot water call-outs
24/7Licence publishedBased in PemulwuyRhino Plumbing & Drainage is based in Pemulwuy and covers St Marys. The crew fits Rheem hot water units and repairs gas, electric and solar systems. Gas work reaches outdoor BBQs and the lines feeding hot water units. A published licence, 292681C, sits alongside 24-hour emergency plumbing and free quotes.

#4Sigma Plumbing for heat pump and solar hot water with a choice of brands
24/7Based in GreystanesSigma Plumbing is based in Greystanes and covers St Marys. Heat pump and solar hot water units are in its work, with Bosch and Vulcan among the brands fitted beside Rheem, Rinnai and Dux. Gas work on continuous-flow units follows AS/NZS 5601. The listing describes 24-hour service seven days a week. No licence number is published, though each job ends with a Certificate of Compliance.

#5StuMac Plumbing for hot water replacement and bathroom and tap repairs
24/7Based in North RichmondStuMac Plumbing is based in North Richmond and covers St Marys. The crew services hot water systems of every model and make. Natural gas connections for home heating are part of its work, along with bathroom updates and tap repairs. Emergency cover runs 24/7, and for a burst pipe or blocked drain after hours you can call 0412 002 483 directly. No licence number appears for this business.

#6Hawkesbury and Nepean Plumbing for after-hours burst pipes and drain work
24/7Licence publishedBased in South WindsorHawkesbury & Nepean Plumbing is based in South Windsor and covers St Marys. Jobs are attended by the owner, Peter, in person. Blocked drains are cleared with CCTV cameras and high-pressure jetting, and burst pipes and leaks get traced and fixed. Hot water repairs fall within its work. Round-the-clock callouts come with licence number 198620C.
Compare hot water plumbers in St Marys
The table below shows where each business is based, its emergency cover and whether it publishes a licence number.
| Plumber | Based in | After hours | Licence | Google rating |
|---|---|---|---|---|
| Shipways Plumbing | Penrith | 24/7 | โ | โ 4.9 (268) |
| Black Buck Plumbing & Gas Pty Ltd | Cambridge Park | 24/7 | โ | โ 5.0 (121) |
| Rhino Plumbing & Drainage | Pemulwuy | 24/7 | โ | โ 4.9 (209) |
| Sigma Plumbing | Greystanes | 24/7 | โ | โ 5.0 (78) |
| StuMac Plumbing | North Richmond | 24/7 | โ | โ 5.0 (83) |
| Hawkesbury & Nepean Plumbing | South Windsor | 24/7 | โ | โ 5.0 (40) |
| Mates Rates Plumbing Eastwood | Eastwood | 24/7 | โ | โ 4.9 (66) |
| Kookaburra Plumbing | St Marys | 24/7 | โ | โ 4.4 (58) |
| Darren Fowler Plumbing | Hassall Grove | โ | โ | โ |
| Hudson Plumbing Services | Chester Hill | โ | โ | โ |
24/7* : listed as open 24 hours, but the business doesn't say 24/7 itself. Ratings show from 5 Google reviews.
How we picked hot water plumbers in St Marys
The order comes from customer scores, weighted by how many customers scored each business. Out-of-hours work a business lists itself counted for more, as did a published licence number and a base in the suburb. Each business's own details were checked for hot water work, including the brands it fits. Businesses without a clear hot water offer were left off the list.
Hot water plumbers in St Marys: FAQ
Who is the best hot water plumber in St Marys?
Shipways Plumbing ranks first here. It works on named hot water brands, covers St Marys and lists 24/7 emergency plumbing.
Which hot water plumbers publish a licence number?
Shipways Plumbing, Black Buck Plumbing & Gas, Rhino Plumbing & Drainage and Hawkesbury & Nepean Plumbing all publish one. Sigma Plumbing and StuMac Plumbing don't.
Can I get a hot water system fixed after hours?
Each of the six hot water plumbers for St Marys lists 24/7 emergency work. Call the one that covers your suburb, and ask for the call-out cost when you phone.