Best hot water plumbers in Doonside
Last updatedRAC Plumbing leads for hot water plumbers in Doonside: it is based in Doonside, runs 24/7 emergency plumbing and publishes its licence number. The others differ on opening hours, where they are based, and what they name, such as brands, gas or solar units. Choose by the job: a system that fails at night, a particular brand, or a licence number to check before you book.
Quick picks in Doonside
- Best for a Doonside base with 24/7 cover: RAC Plumbing, based in Doonside, runs round-the-clock emergency plumbing.
- Best for a hot water failure at midnight: Mates Rates Plumbing Eastwood, which names sudden hot water failure among its emergency jobs.
- Best for a gas hot water unit on natural gas or LPG: Darren Fowler Plumbing, with gas fitting for both and licence 4592C.
- Best for a Rinnai unit: Hudson Plumbing Services, which has installed Rinnai models.
- Best for a solar hot water system: Hills Emergency Plumbing Pros, which installs, repairs and replaces solar units.
Best hot water plumbers in Doonside, ranked

#1RAC Plumbing for hot water system repairs and replacements from a Doonside base
24/7Licence publishedRAC Plumbing is based in Doonside and handles hot water system replacements, repairs and water heater fixes. It works 24/7 for plumbing emergencies, so a failed unit at night can still be called in. The published hours run 7:30am to 4pm, Monday to Friday, so book planned replacements in that window. The licence it publishes is 77782C. Public holiday and after-hours rates apply, so ask which rate you will pay before the plumber comes out. Free quotes are offered, and Rob takes quote enquiries himself.

#2Mates Rates Plumbing Eastwood for hot water failures outside business hours
24/7Licence publishedBased in EastwoodMates Rates Plumbing Eastwood fixes and swaps hot water units, and it fits thermostatic mixing valves to hold the water temperature. Its emergency work covers a sudden hot water failure, and it is listed as 24/7 with no closing time. Urgent night work can be dearer than daytime work, so agree the price in writing first. Its licence number is 226679C. Its base is Eastwood, and its service list includes Doonside.

#3Square One Services for hot water systems when there is no hot water
24/7*Based in Baulkham HillsSquare One Services is based in Baulkham Hills and takes on Doonside jobs, with hot water systems one of its plumbing services alongside drain jetting and leak repairs. Its own pages say call-outs cover a sudden loss of hot water, and its listing shows open 24 hours. Its material shows no licence number, so ask for one up front. It also takes handyman and renovation work, so confirm the booking is for plumbing.
#4Darren Fowler Plumbing when a hot water unit runs on natural gas or LPG
Licence publishedBased in Hassall GroveDarren Fowler Plumbing is based at Hassall Grove and serves Doonside, with hot water repairs, replacements and installs among its core jobs. It also does gas fitting for natural gas and LPG, which helps if the unit runs on either. Licence 4592C is published. Weekday hours run 8am to 4:30pm and Saturday mornings to 12pm, and no after-hours work is listed, so plan urgent faults around those times.
#5Hills Emergency Plumbing Pros for solar, gas and electric hot water units at any hour
24/7Based in Castle HillHills Emergency Plumbing Pros works out of Castle Hill and covers Doonside, and it installs, repairs and replaces gas, electric and solar hot water units. It is listed as 24/7 for urgent repairs, so a breakdown at night can still be booked. No licence number is printed on its pages. Quotes are fixed per job here, and no call-out fee appears, so ring to ask what a visit costs.
#6Hudson Plumbing Services for Rinnai installs and weekday hot water work
Based in Chester HillHudson Plumbing Services is based in Chester Hill and serves Doonside, and hot water diagnosis, repair, replacement and installation are part of its core work. Rinnai units are among the models it has put in, so ask for that brand if you want one. Hudson's hours on its listing are weekdays only, 7:30am to 5:30pm, and it mentions no after-hours work. Its licence number isn't published. Pensioner and senior discounts are offered, and a $50 discount for new customers applies with terms, so ask what those are when you book.
Compare hot water plumbers in Doonside
The table compares where each business is based, its emergency hours and whether it publishes a licence number.
| Plumber | Based in | After hours | Licence | Google rating |
|---|---|---|---|---|
| RAC Plumbing | Doonside | 24/7 | โ | โ 5.0 (12) |
| Mates Rates Plumbing Eastwood | Eastwood | 24/7 | โ | โ 4.9 (66) |
| Square One Services | Baulkham Hills | 24/7* | โ | โ 5.0 (20) |
| Darren Fowler Plumbing | Hassall Grove | โ | โ | โ |
| Hills Emergency Plumbing Pros | Castle Hill | 24/7 | 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 Doonside
Ranking uses a weighted score in which customer feedback counts for more when more customers gave it. Extra consideration went to businesses that state their own after-hours work, publish a licence number, sit in Doonside, and describe hot water jobs on their pages. No business moved up on feedback alone.
Hot water plumbers in Doonside: FAQ
Which hot water plumbers in Doonside work at night?
RAC Plumbing, Mates Rates Plumbing Eastwood and Hills Emergency Plumbing Pros all list 24/7 emergency work. Ask about the after-hours rate before the plumber is sent.
Which hot water plumbers here publish a licence number?
RAC Plumbing, Mates Rates Plumbing Eastwood and Darren Fowler Plumbing all publish one. Check the licence of the others before you sign off on the work.
Do hot water plumbers in Doonside give quotes before work starts?
Hills Emergency Plumbing Pros says every job gets a fixed quote, and RAC Plumbing and Darren Fowler Plumbing both offer free quotes. Get the price in writing either way.
Can I book a hot water plumber in Doonside from outside the suburb?
Doonside is inside the service areas of Mates Rates Plumbing Eastwood, Square One Services and Hudson Plumbing Services. RAC Plumbing is based in Doonside itself.