Rydalmere, NSW 2116 — Servicing all Sydney suburbs
Mon–Fri 7am–5pm · Sat 7am–12pm info@southernstarplumbing.com.au
Frequently asked

Sydney plumbing questions, answered.

52 of the questions we hear most often — from urgent call-outs to hot water choices, gas compliance, pricing and strata work. No sales fluff, just straight answers from our team.

Updated regularly Real answers from our team Ask us anything on 0432 304 609

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We’ve answered the 52 most common ones here, but every job has its own twist. If you’ve got a question that isn’t covered, call 0432 304 609 — a real plumber answers, and most queries are sorted in a 2-minute phone call.

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Southern Star Plumbing team

Emergency plumbing

What should I do if a pipe bursts inside my home?
Turn the water off at the main meter (usually a blue-lidded box near the front boundary) — one clockwise quarter-turn on the handle stops the water. Then flip the switch on your hot water system to stop it refilling an empty tank. Call us on 0432 304 609. Move valuables, towel the floor, and don’t touch any wet electrical fittings.
How fast can Southern Star Plumbing respond to an urgent job in Sydney?
Honestly, it depends on what’s on for the day. We’re a local Sydney plumbing team (not a 24/7 dispatch service), so when you ring we’ll check the day’s bookings and tell you straight whether we can get there today, tomorrow, or whether a closer plumber would serve you better. The drive from our Rydalmere yard is 20–40 minutes to most mid-ring suburbs and 60–90 minutes to the outer rings — but the van may be coming from a previous job, so we’ll give you a realistic window when we book.
What do I do if I smell gas?
Don’t turn anything electrical on or off, don’t strike a flame. Open doors and windows for ventilation, turn the gas off at the meter if safe to reach (clockwise quarter-turn), and leave the building. Call Jemena on 131 909 if the smell is strong, then call us. Do not go back inside until it’s cleared.
Is a toilet overflow a plumbing emergency?
If water is actively coming over the rim and onto the floor, yes — turn off the isolating tap behind the toilet (clockwise) and stop flushing anywhere in the house. If the whole main sewer is blocked, other drains will gurgle when the toilet is used. Call us and we’ll tell you straight whether we can fit it in today or point you to a plumber who can get there sooner.
How do I turn off the water in my Sydney home?
There are usually two places: the Sydney Water meter at your front boundary, and an isolation valve near where the water enters the house. Either stops water to the whole property. Individual fixtures often have their own isolators (behind toilets, under basins) which we recommend to clients during renovations.
What counts as a plumbing emergency?
Actively escaping water, gas smell, main-sewer blockage backing up into the house, a leaking hot water tank, or anything threatening safety or major property damage. Dripping taps, slow drains and non-urgent hot water faults are not emergencies — we’ll book those in quickly but won’t charge emergency rates.
Do you provide 24/7 emergency service?
No — and we’d rather be upfront than pretend. We’re a booking-first Sydney plumbing team that works through scheduled jobs each day. We’ll prioritise urgent work where we can during business hours and for regular commercial/strata clients we’ll take after-hours calls, but for one-off overnight or weekend emergencies a dedicated 24-hour plumber will usually get there quicker. We’ll point you in that direction honestly on the phone.

Hot water

How long does a hot water system typically last?
Electric storage tanks: 10–15 years. Gas storage: 8–12 years. Gas continuous flow: 15–20 years. Heat pumps: 10–15 years. Solar: 15–20 years on panels, 8–10 on boosters. Hard water and high chlorine levels in some Sydney suburbs can shorten these — replacing the anode rod at year 5 roughly doubles the life of a storage tank.
Should I repair or replace my old hot water system?
Under 8 years old and the failure is a part (thermostat, element, TPR valve, thermocouple) — repair. Over 12 years old, or leaking from the tank base itself — replace. Anything in between, we’ll weigh the repair cost against remaining life and give you a straight answer.
Which hot water system is best for a Sydney family home?
For a 4-bedroom Sydney home with natural gas connected, a gas continuous-flow unit (Rinnai Infinity 26 or Rheem Metro) is the most reliable and lowest-fuss. No connection to gas? A heat pump (Sanden, Reclaim, or Rheem) will beat an electric tank on running cost by 70% and attracts federal rebates.
Why is my hot water running out fast?
On a storage tank it usually means the bottom element or thermostat has failed (in electric), the dip tube has snapped and cold water is short-circuiting hot water to the outlet, or the tank is ready for replacement. We’ll diagnose it without a call-out fee on a scheduled job.
Is a heat pump hot water system worth it?
For most Sydney households replacing an electric tank — yes. Federal STC rebates and NSW energy rebates often cover 30–60% of the install cost, and running costs are typically ∼70% lower than electric storage. The best brands (Sanden, Reclaim) have 10-year warranties; avoid the cheapest imports.
Do you service all hot water brands?
Yes. Rheem, Rinnai, Dux, Bosch, Aquamax, Vulcan, Sanden, Reclaim, Thermann, Stiebel Eltron and more. We stock the common parts for all of them on the van.
What’s a TPR valve and why does it drip?
The temperature-and-pressure-relief valve is a safety device on every storage hot water tank. A slow drip is normal during the daily heat cycle. A steady stream means the valve has failed or the tank is over-pressurising — both jobs for a plumber, not DIY.

Blocked drains & pipes

Why does my drain keep blocking?
Repeat blockages nearly always mean tree roots have entered a cracked earthenware sewer pipe — common in Sydney homes over 30 years old — or a joint has dropped and food/waste is catching. A once-off clear is a band-aid. A CCTV camera survey shows you exactly why it’s happening.
Can I use a chemical drain cleaner?
Supermarket drain chemicals rarely clear a real blockage and can damage old pipes, seals and chrome fittings. At best they soften a localised grease plug. For tree roots, grease traps and kitchen blockages they’re useless. Hot water and dish soap will do as much for a slow kitchen sink.
What does CCTV drain inspection involve?
We run a waterproof camera on a flexible rod down the drain, recording video as we go. You get to see exactly where the blockage is, what caused it, and the condition of the pipe on either side. We measure the depth and supply the footage — invaluable before any dig or reline.
What is pipe relining and how long does it last?
We pull an epoxy-soaked liner through the damaged pipe, inflate a bladder to press it to the pipe walls, and cure it in place — creating a new, seamless, root-proof pipe inside the old one. No trench, no lawn demolition. Lasts 50+ years on most manufacturers’ warranties.
Who is responsible for the sewer in a Sydney property?
From inside the house to the connection point at Sydney Water’s main (usually at the front boundary), the pipe is the homeowner’s. From there it’s Sydney Water’s. If your blockage turns out to be in their section we’ll give you the CCTV footage to escalate.
My kitchen sink is slow — how do I fix it?
Empty the trap under the sink first (bucket underneath, unscrew the two collars, clean it out). That fixes about half of kitchen-sink slowdowns. If not, it’s further down the line and grease build-up is the likely culprit — a water jetter will clear it properly where a plunger won’t.
Why do my drains smell?
Usually a dry or failed trap letting sewer gas up, a partially blocked vent, or decaying food/biofilm in the line. Run water in every drain for 30 seconds to refill traps first. Persistent smells need investigation — they often signal an upstream problem.

Gas & appliances

Can I install a gas cooktop myself?
No. In NSW all gas connections must be done by a licensed gas fitter and come with a NSW Gas Compliance Certificate. DIY gas work voids your home insurance and is a prosecutable offence under the Gas Supply Act. A cooktop install takes a licensed gas fitter 60–90 minutes.
What is a gas compliance certificate and do I need one?
It’s the NSW document a licensed gas fitter issues for any gas installation or modification. You’ll need to produce it when selling a home and your insurer may request it after any claim. We issue one for every gas job we do.
How often should I test my gas appliances?
Have a licensed gas fitter service gas heaters and cooktops every 2–3 years. Continuous-flow hot water units benefit from a service every 3 years. If you ever smell gas, hear hissing, or see a yellow/orange flame instead of blue, that’s sooner not later.
Can you convert my BBQ or oven from LPG to natural gas?
Most current-model BBQs and ovens accept a conversion kit. We install the gas point, fit the conversion orifice, and pressure-test it. Some budget imports don’t have a conversion path — we’ll check before quoting.
Who do I call for a gas leak in Sydney?
If the smell is strong, ring Jemena on 131 909 (the Sydney gas distributor) — they attend free to make the site safe. Then call us on 0432 304 609 to locate and repair the fault. If the smell is faint, call us directly.

General plumbing

Are you licensed and insured?
Yes — NSW plumbing licence, NSW gas fitting licence, backflow accreditation, fire services accreditation, and $20 million public liability insurance. Certificates of Currency are available on request for any commercial client.
Do you give free quotes?
Yes for most residential and commercial work. Phone diagnosis is always free. On-site quotes for straightforward jobs are free too — we only charge if the job needs a proper investigation (leak detection, CCTV survey) or is a specialist report.
How do you charge — hourly or fixed price?
Fixed price, not hourly, wherever we can. You get a written quote before we start, and that quote includes all the charges that apply to your job — labour, materials, call-out where relevant, disposal, any travel component for longer runs, and any after-hours loading if the work falls outside normal trading hours. Nothing extra gets tacked on at the end. If the job scope changes we stop, quote the variation in writing, and wait for your go-ahead before we resume.
What payment methods do you accept?
Bank transfer, Visa, Mastercard (small surcharge) and Amex. For commercial account clients we offer 14- or 30-day terms after two successful invoices.
Do you do small jobs — just a leaking tap?
Absolutely. We’d rather do your $120 tap washer today than lose you as a customer later. Small jobs are how you find out whether a plumber is actually good.
Do you guarantee your work?
12 months workmanship guarantee on everything we touch. Materials carry the manufacturer’s warranty. If something we installed fails in the warranty period we come back and make it right at no cost to you.
What suburbs of Sydney do you cover?
Every Sydney suburb — we’re based in Rydalmere (NSW 2116) which puts us central to Parramatta, Ryde, Eastwood, the Hills, and the Inner West. Eastern Suburbs, Sutherland Shire, Northern Beaches and the full metropolitan area are all regular routes.
Can I book online or by email?
Yes — use the contact form or email info@southernstarplumbing.com.au. Include photos if you have them — it helps us scope the job and load the right parts on the van.
Do you work on weekends?
Saturday mornings (7am–12pm) are normal trading hours for booked work. Sundays, public holidays and late evenings we’re generally not out on the tools unless it’s for a regular commercial client or a genuine emergency — and work done outside normal hours carries an after-hours rate. Whatever the time slot, the rate that applies will be shown on your written quote before we start.

Pricing & quotes

How much does a plumber cost in Sydney?
Straightforward residential work in Sydney is typically $120–$220/hour equivalent, though we quote fixed price. A common tap washer service might be $140–$190; a toilet cistern rebuild $280–$420; a like-for-like gas hot water changeover around $2,200–$3,200. Our pricing guide has typical ranges.
Why is one quote double another for the same job?
Because “the same job” often isn’t. Cheap quotes usually skip the compliance certificate, use lowest-grade fittings, leave the old unit for you to dispose of, or don’t include testing and commissioning. Always compare itemised inclusions, not just the headline number.
What’s the call-out fee?
For quoted work the call-out is rolled into the fixed price — what’s on your quote is what you pay. For urgent attendance where the scope can’t be confirmed until we arrive, a single attendance fee applies (credited against the repair if you proceed). After-hours, weekend and public-holiday attendance carries a higher rate. The rate that applies to your job will always be set out in writing before we start.
Do you charge for after-hours or emergency call-outs?
Yes. Work done outside normal trading hours — evenings, Sundays, public holidays, and urgent after-hours attendances — carries an after-hours rate. We’ll tell you on the phone whether your job falls into that category and what the rate is, and it will form part of the written quote before any work starts. No hidden surcharges at the end of the job.
Do you offer pensioner or aged-care rates?
Yes — a 10% discount on labour for pension and concession card holders. Just mention it when you book.
Is there a minimum call-out charge?
Yes — our minimum charge is typically 1 hour of on-site time within normal trading hours, and a higher minimum for after-hours attendance. We’ll confirm what applies when you book, and it forms part of your written quote.
Will there be a travel or location surcharge?
For most Sydney suburbs the travel component is already rolled into the fixed-price quote. For longer runs, regional jobs or work outside our usual service area we may include a separate travel line in the quote — you’ll see it before you accept, never as a surprise on the invoice.

Strata, commercial & compliance

Do you service strata and body-corporate buildings?
Regularly. Hot water, fire hose reels, stormwater, common-property drainage, TMV testing, backflow — we handle the lot. Invoices can be split between owner and common property with appropriate scope notes.
What is backflow prevention and is it compulsory?
Backflow prevention stops contaminated water siphoning back into the drinking-water supply. In Sydney it’s compulsory for commercial properties, medical premises, any boundary with chemicals/dental/veterinary, and certain residential setups (e.g. swimming pools with fill lines). Annual testing is a legal requirement — we can do it.
Do you do TMV (thermostatic mixing valve) testing?
Yes — childcare, aged-care and medical properties must have TMVs maintained and tested annually (AS 4032.3). We test, certify, and keep your records audit-ready.
Can you issue a Section 73 for a Sydney Water connection?
Section 73 applications for new water/sewer connections in NSW go through Sydney Water directly, but we do the on-site civil plumbing portion and coordinate with the accredited WSC. Happy to walk developers through the process.
Do you work with shopfitters on retail fit-outs?
Yes — weekly. Food outlets, hospitality, pharmacies, barbers, dental and beauty. We work to the shopfitter’s program and handle water, waste, gas, backflow and compliance documentation.

Working with Southern Star

What happens when I call to book a job?
You’ll speak to a real plumber, not a call centre. We’ll diagnose what we can over the phone, book a time that suits, and give you an arrival window. For quoted jobs, we confirm the price in writing before we start work.
Will the same plumber come back if there’s a follow-up?
Where possible, yes — continuity matters, especially in a renovation or multi-visit job. For quick fixes it depends who’s closest.
Do you clean up after the job?
Every job finishes with site left tidy, rubbish taken away, and paperwork handed over. Drop cloths go down in a home before work starts. Old hot water units, old toilets, and scrap pipe leave with us.
Can you send photos or video of the issue before/after?
Yes — we can take photos or short videos of the problem, the access area, and the finished job. Handy for landlords, strata managers, insurance claims, and anyone who isn’t on site.
How do I leave a review?
We love Google reviews — they help other Sydney homeowners find us. After your job we’ll send a quick link if you’re happy with the work.

Still got a question?

Call us on 0432 304 609 or drop a note — we’ll answer it and add it to this page if others are asking it too.