Best hot water plumbers in Baulkham Hills
Last updatedSwish Plumbing ranks first for hot water plumbers in Baulkham Hills because it is based in the suburb and its hours are listed as open 24 hours. The picks differ on where they are based, when they come out and which hot water work they name, so choose by those first. Licence details are missing from one of them.
Quick picks in Baulkham Hills
- Best for a hot water heater upgrade with a lifetime warranty: Swish Plumbing, which is based in Baulkham Hills.
- Best for a Rinnai continuous-flow replacement: Twenty47 Plumbing, based in North Rocks, which lists those systems among its replacements.
- Best for a hot water repair with free quotes: Small & Co. Plumbing and Blocked Drains, based in Winston Hills, which says its quotes are free and obligation-free.
- Best for a hot water fault at night: Fusion Plumbing, which answers calls at any hour.
Best hot water plumbers in Baulkham Hills, ranked

#1Swish Plumbing for hot water heater upgrades, backed by a lifetime warranty
24/7*Licence publishedBaulkham Hills is Swish Plumbing's home base, and hot water systems sit beside its gas fitting and drain work. Customers name hot water heater upgrades among the jobs it has done, along with tap and shower repairs. Quotes are fixed up front where possible, and the warranty runs for life. Its licence number is 327681C, and its hours are listed as open 24 hours, so a system that fails overnight can be called in.

#2Hills District Plumbing for hot water systems that need a mixing valve
24/7*Licence publishedBased in Castle HillHills District Plumbing operates from Castle Hill, covering Baulkham Hills, Kellyville and Dural. It is the pick when a hot water system needs a thermostatic mixing valve fitted, a service its page lists beside hot water systems and gas leak detection. Licence 278506C is on record for the business. Its own listed hours run around the clock, but it takes after-hours jobs only by arrangement, so check before a night call.

#3Small and Co. Plumbing and Blocked Drains for hot water repairs with free quotes
24/7Licence publishedBased in Winston HillsSmall & Co. Plumbing and Blocked Drains is based in Winston Hills and serves Baulkham Hills, Castle Hill, Parramatta and Ryde. Repairs are its hot water route, next to planned maintenance and gas fitting. One customer's leaking system was quoted and fixed within a few hours. Its licence is 309268C, and there's no charge for a quote or obligation to accept one. Its office hours are Monday to Friday, 7am to 4pm, and its 24/7 number is for urgent faults only.

#4Twenty47 Plumbing for hot water replacements, including Rinnai units
24/7Licence publishedBased in North RocksTwenty47 Plumbing works out of North Rocks, reaching Baulkham Hills, Castle Hill, Kellyville and Norwest. Among its North Rocks jobs are Rinnai continuous-flow replacements, and its hot water work centres on swapping out units. Pricing is per job rather than hourly, and it is fixed once the plumber has inspected. Its published licence is 247398C, and it advertises a 24/7 emergency service.

#5Fusion Plumbing for hot water installs and repairs, with 24/7 emergency calls
24/7Based in BlacktownFrom Blacktown, Fusion Plumbing reaches Baulkham Hills, Castle Hill, Kellyville and Norwest. Hot water system installation and repair sit alongside its emergency plumbing, which runs 24/7 and covers burst pipes too. There is no licence number published for Fusion Plumbing. Urgent faults go to 0412 228 319, any time of day.

#6Don't Risk it Plumbing for new hot water heating systems and urgent call-outs
24/7Licence publishedDon't Risk it Plumbing is based in Baulkham Hills and installs new hot water heating systems. The business gives licence 176426C. Its plumbers take calls at any hour for burst pipes, blocked drains and sewerage work, while its listed office hours run Monday to Saturday, 7am to 5pm. For urgent work the number is 0414 769 678.
Compare hot water plumbers in Baulkham Hills
The table compares where each business is based, its after-hours cover and whether it publishes a licence number.
| Plumber | Based in | After hours | Licence | Google rating |
|---|---|---|---|---|
| Swish Plumbing | Baulkham Hills | 24/7* | โ | โ 5.0 (162) |
| Precision Pipes | Castle Hill | 24/7 | โ | โ 5.0 (232) |
| Hills District Plumbing | Castle Hill | 24/7* | โ | โ 5.0 (252) |
| Rhino Plumbing & Drainage | Pemulwuy | 24/7 | โ | โ 4.9 (209) |
| Small & Co. Plumbing and Blocked Drains | Winston Hills | 24/7 | โ | โ 5.0 (130) |
| Twenty47 Plumbing | North Rocks | 24/7 | โ | โ 4.9 (65) |
| Aussie ONCALL Plumber Castle Hill | Castle Hill | 24/7 | โ | โ 5.0 (43) |
| Mates Rates Plumbing Eastwood | Eastwood | 24/7 | โ | โ 4.9 (66) |
| Fusion Plumbing | Blacktown | 24/7 | โ | โ 4.8 (124) |
| Don't Risk it Plumbing | Baulkham Hills | 24/7 | โ | โ 5.0 (21) |
| Square One Services | Baulkham Hills | 24/7* | โ | โ 5.0 (20) |
| Jim's Plumbing and Gasfitting | Winston Hills | 24/7 | โ | โ 4.7 (31) |
| Frosty's Plumbing Pty Ltd | Castle Hill | 24/7 | โ | โ 5.0 (24) |
| The Clean Plumber | Castle Hill | 24/7 | โ | โ 5.0 (12) |
| Hills Emergency Plumbing Pros | Castle Hill | 24/7 | โ | โ |
| Better Way Plumbing | North Kellyville | 24/7 | โ | โ |
| One Hour Plumbing / Hot Water / Drains / Repairs and Installations | Brookvale | โ | โ | โ 4.1 (10) |
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 Baulkham Hills
Ordering starts with customer scores, weighted by how many customers left them, so a perfect score from a handful of customers counts for less. Close scores are settled by after-hours cover the business states itself, a published licence and a local base. Each business's own description of its hot water jobs decides what it is best for.
Hot water plumbers in Baulkham Hills: FAQ
Which hot water plumbers in Baulkham Hills publish a licence number?
Swish Plumbing (327681C) and Twenty47 Plumbing (247398C) give theirs. Fusion Plumbing has none published, so ask for one before booking.
Which hot water plumbers in Baulkham Hills work after hours?
Two picks, Fusion Plumbing and Don't Risk it Plumbing, take calls at any hour of the night. Hills District Plumbing takes after-hours work only by arrangement, according to its own description.
Do hot water plumbers in Baulkham Hills fit Rinnai systems?
Twenty47 Plumbing lists Rinnai continuous-flow systems among its North Rocks replacements. Most of the others don't name a brand, so ask which one a plumber fits before booking.
Which hot water plumbers in Baulkham Hills are based in the suburb?
Swish Plumbing and Don't Risk it Plumbing are both based in Baulkham Hills itself. The rest come in from Castle Hill, Winston Hills, North Rocks and Blacktown.