Ready Set Plumb is a fully licensed Sydney plumber that installs, repairs and replaces every type of hot water system, gas, electric, solar, heat pump and continuous flow, for homes and strata buildings across Sydney. Our in-house plumbers arrive at an agreed time, quote a fixed price upfront with no call-out fee, and back every job with our Lifetime Labour Guarantee.

Fixing hot water system

Why Sydney homeowners choose Ready Set Plumb for hot water repair and replacement

Looking for the best plumber for hot water system repair or replacement in Sydney? These are the reasons homeowners and strata managers across the North Shore, Northern Beaches, Eastern Suburbs, Inner West and Hills District choose Ready Set Plumb:

  • Rated 4.9 from 300+ Google reviews. Customers most often mention our friendliness (267 reviews), punctuality (258), fair and honest pricing (252), quality of work (237) and cleanliness (232).

  • Same-day hot water fixes and replacements. In one review, a customer “rang at 10:00am with broken hot water service and new one installed by 5:00pm.” We carry common parts on the van, so many faults are fixed on the first visit.
  • Our own in-house licensed plumbers, never subcontractors. We are a licensed NSW contractor (Licence 266660C), a Master Plumbers NSW member, and we hold $20 million in public liability cover.
  • $0 call-out fee and a fixed price before we start. Your quote includes supply, installation and removal of the old unit, and the number on the quote is the number you pay.
  • Lifetime Labour Guarantee in writing. If our workmanship fails, we come back and fix it for as long as you own your home.

  • Honest repair-vs-replace advice. If your system is worth fixing, we fix it. You won’t be pushed toward the most expensive unit.
  • 24/7 availability. We take emergency calls for burst tanks and no hot water, with guaranteed 2 to 3 hour arrival windows for booked jobs.
  • Every system type and major brand. We work on gas, electric, solar, heat pump and continuous flow systems from Rheem, Rinnai, Dux, Vulcan, Sanden, Bosch and more.

Reviews

What our customers say about us across Sydney

4.9
from 330 Google reviews
Rating breakdown
5 316 4 7 3 0 2 0 1 3
Most mentioned in our reviews
Friendliness267
Punctuality258
Fair & honest pricing252
Quality of work237
Cleanliness232

The guys turned up on time, saw the problem (faulty hot water system) needed replacement after 21 years. The job was then carried out efficiently and professionally with area cleaned up and removal of old system organised by them.

Neil Ohlback, North Balgowlah

Very quick service. Rang at 10:00am with broken hot water service and new one installed by 5:00pm.

Julie Wethered

Ryan provided excellent advice about my lack of hot water. He went out of his way on a Sunday to help.

Deborah Raper

After calling 6 different plumbers to try and get an after hours emergency repair done on our hot water unit, I stumbled across Ready Set Plumb’s phone number. I called straight away and Ryan was professional, polite and able to be at my house within 45 minutes!

Kristina Masigan

I need my hot water system replaced. Gave me a quote in the morning and it was installed by the afternoon.

Jackie Nugara

Christopher quickly identified the hot water issue with our bathroom basin tap (thankfully for us, not a costlier complete replacement was required) and it was able to be fixed on the spot.

Kim F.

Our hot water system broke down yesterday morning. Sam recommended a replacement based on our needs, ensuring that we had hot water that night.

Donna Carruthers

What We Fix

Hot water repairs

Most hot water problems are repairable, and a repair is almost always cheaper than a new unit. You get an honest assessment first: if it’s worth fixing, we fix it; if it’s near the end of its life, we’ll tell you straight. Here are some common faults we repair.

No hot water or lukewarm water

Failed heating element or thermostat (electric), or a faulty gas valve / ignition (gas).

Leaking tank or fittings

Corroded cylinder, perished seals, or a weeping relief valve. Here’s how to tell where your hot water system is leaking and what it means.

Water too hot or fluctuating

Faulty tempering/thermostatic mixing valve or thermostat.

Discoloured or smelly water

Sediment build-up; often solved with a flush and anode check.

Constantly dripping relief valve

A pressure or expansion issue, not just a “drip to ignore”. Often a failed pressure limiting valve upstream, or the same water hammer issue that has your pipes banging.

Pilot light won’t stay lit / no ignition

Thermocouple or gas-supply fault.

We service all major brands such as Rheem, Rinnai, Dux, Vulcan, Sanden, Bosch, Aquamax, Stiebel Eltron, Thermann and carry common spare parts, so many repairs are done in a single visit.

Fix Now, Pay Later

Got a plumbing job that can’t wait? Homeowners can fix it now and spread the cost of eligible plumbing work over $1,000 with HomePro Credit. Check whether you pre-qualify for finance from HomePro Credit. Pre-qualification is free, non-binding and will not affect your credit score.

*Subject to eligibility; fees and charges may apply. Financing provided by HomePro Credit, ABN 60 690 561 507, Australian Credit Licence 574609.

Replace & install

The honest repair-vs-replace call

If your system is 10–15+ years old, leaking from the tank itself, or failing repeatedly, replacement usually makes more financial sense than another patch-up. A rusted-through cylinder can’t be repaired, once it’s leaking from the tank, it’s replacement time.

Replacement hot water system

Hot Water System Replacement

You won’t be pushed toward the most expensive option. We’ll talk you through:

  • Whether a like-for-like swap or an efficiency upgrade is the smarter spend
  • The right size for your household, so you never run out mid-shower
  • A total fixed price upfront, supply, install and old-unit removal included

Most straightforward replacements are completed same day, so you’re not left without hot water overnight.

Installing new hot water system

New Hot Water Installation

Building, renovating, or moving a system? Get it installed to AS/NZS 3500 standards, with:

  • The correct tempering valve, safe 50°C to bathroom outlets
  • A compliant relief valve and tidy, code-compliant pipework
  • Gas connections and electrical sign-off coordination, the works

And we clean up before we leave. No mess, no surprises.

All Types

Every type of system, supplied, installed and serviced

Not sure which suits your home? Here’s the plain-English version. We’ll match the type, size and brand to how your household actually uses hot water, not just sell you what’s on the truck.

Rinnai Heat Pump

Heat pump

The most efficient option going. Works like a fridge in reverse, pulling heat from the air, using up to 70% less electricity than a standard electric tank. Best value once you factor in the government rebates below. Ideal for North Shore homes switching off gas or off an old electric tank.

Solar hot water

Solar hot water

Roof-mounted collectors with a tank, the lowest running cost in the right position, with electric or gas boost for cloudy days. Great for free-standing homes with good roof aspect.

Continuous flow gas hot water

Continuous flow gas

Endless hot water, heated on demand, no tank to run dry. Compact, so it’s good for smaller homes, units and tight spaces.

Gas storage hot water

Gas storage

Reliable, fast recovery, and a lower upfront cost where mains gas is available.

Electric hot water

Electric storage

The lowest upfront cost and simplest to install, but the highest to run, which is often the reason households upgrade to heat pump or solar.

Sizing Guide

What size hot water system do I need?

A rough guide for storage and heat pump tanks. We’ll confirm the right size on site so you never run out mid-shower.

HOUSEHOLD ELECTRIC / GAS STORAGE HEAT PUMP
1-2 people 125-170 L 200-250 L
3-4 people 250-315 L 270-280 L
5-6 people 315 L+ 300-315 L

Continuous flow gas is sized by flow rate (litres/min) and number of bathrooms rather than tank volume.

Ready Set Plumb

GUARANTEE

No. RSP-4815

LIFETIME GUARANTEE

Certificate of guarantee

Lifetime Labour Guarantee

This certifies that all workmanship carried out by Ready Set Plumb is guaranteed for as long as you own your home — no call-out fee, no expiry date.

Issued toJ. Castellano
PropertyDalrymple Ave, Roseville
CoverageLifetime of ownership
Workmanship covered · in writing on every invoice
Ready Set Plumb
Customer

In Writing, Every Time

Our Ready Set Plumb Guarantees

The number on your quote is the number you pay. Every job comes with three things in writing, so you’re never relying on a verbal promise.

Fixed Price Guarantee

You’ll get a fixed price before we start. That’s the price you pay, no estimates, no surprises at invoice time.

Lifetime Labour Guarantee

If our workmanship fails, we come back and fix it, for as long as you own the home.

Turn Up On-time Guarantee

We’ll give you a 2 to 3 hour timeslot so you can plan your day as needed and we’ll keep you updated.

Plumbing quote being explained

Our Minimum Standards

No boot prints, no mess, no exceptions

Clean uniforms. Clean boots. Drop sheets down before we start. Tools, packaging, and offcuts out with us when we leave. If we need to open a wall or ceiling, we’ll tell you first and leave the area tidy.

  • Drop sheets laid before any work begins
  • Shoe covers worn inside your home
  • All debris, offcuts, and packaging removed when we leave
  • Work area left clean and tidy, not “tradie tidy,” actually tidy
  • Any access to walls, ceilings, or other areas discussed with you before we touch them
  • A walkthrough of the completed work before we pack up

You won’t find boot prints on your tiles or copper shavings in your bath. That’s not a bonus we charge for. It’s the minimum standard.

Service Area

Suburbs we serve across Sydney

Based in Roseville and covering the entire Sydney metropolitan area including the North Shore, Northern Beaches, Eastern Suburbs, Inner West and Hills District.

Artarmon
Asquith
Cammeray
Castlecrag
Chatswood
Cremorne
Crows Nest
East Killara
Eastwood
Epping
Gordon
Greenwich
Hornsby
Hunters Hill
Killara
Kirribilli
Kurraba Point
Lane Cove
Lavender Bay
Lindfield
Longueville
Marsfield
Mosman
Mount Colah
Mount Kuring-gai
Naremburn
Neutral Bay
North Epping
Northbridge
North Sydney
Pennant Hills
Pymble
Roseville
South Turramurra
St Ives
St Leonards
Thornleigh
Turramurra
Wahroonga
Warrawee
Waverton
West Pymble
Willoughby
Wollstonecraft

Balgowlah
Beacon Hill
Belrose
Brookvale
Collaroy
Dee Why
Fairlight
Forestville
Frenchs Forest
Killarney Heights
Manly
Narrabeen
Newport
Queenscliff
Seaforth
Warriewood
Bellevue Hill
Bondi
Double Bay
Elizabeth Bay
Millers Point
Paddington
Randwick
Rose Bay

Annandale
Ashfield
Balmain
Dulwich Hill
Forest Lodge
Glebe
Leichhardt
Lewisham
Marrickville
Newtown
Rozelle
Stanmore
Strathfield

Baulkham Hills
Beecroft
Bella Vista
Carlingford
Castle Hill
Cheltenham
Cherrybrook
Dural
Stanhope Gardens
West Pennant Hills
Winston Hills

FAQ

Hot Water Frequently asked questions

Straight answers to the things people ask us most when something’s gone wrong.

It depends on the type and size, but as a guide most replacements range from around $1,200 for a basic electric storage swap up to $3,000–$4,500+ for a heat pump before rebates and government rebates can bring a heat pump down significantly. We quote a fixed price upfront, including supply, installation and removal of the old unit, so there are no surprises.
A heat pump is the cheapest to run for most homes, it uses up to 70% less electricity than a standard electric tank. Solar hot water can be even cheaper where the roof aspect suits it, especially paired with solar panels. Old electric storage systems are the most expensive to run.
Yes. The NSW Energy Savings Scheme gives an upfront discount (typically around $400–$675 for an electric-to-heat-pump replacement), and federal STCs add a further discount, the two are stackable. We’ll check your eligibility and handle the eligible paperwork.
Most storage systems last 8–15 years; continuous flow gas and quality heat pumps can run longer with servicing. If yours is past 10–12 years and playing up, it’s worth getting a repair-or-replace assessment.
Generally a 250–315 L electric/gas storage tank or a 270–280 L heat pump suits a family of four. Continuous flow gas is sized by flow rate instead. We’ll confirm the right size on site so you never run out mid-shower.