Hot Water System Replacements Sydney
Replace ageing, inefficient, or failed hot water systems with modern energy-efficient alternatives. Our expert plumbers handle complete changeovers—from electric to gas, tank to instantaneous, or traditional to heat pump—with same-day service, old unit removal, and 10-year warranties on all installations.
Why Replace With Us
Energy Upgrades
Switch to efficient gas, heat pump, or solar systems and save $400-$800/year
Removal Included
Old system disposal and recycling included in all replacement services
Fast Changeover
Most replacements completed same day with minimal hot water downtime
Full Warranty
10-year manufacturer warranties registered on all major brands
Professional Hot Water System Replacement Sydney
When your hot water system reaches 10+ years old, shows signs of rust, leaks constantly, or struggles to keep up with demand, it's time for a replacement—not another repair. We remove your old electric, gas, or solar system and install a modern, energy-efficient replacement in a single day. Choose from leading brands including Rheem, Rinnai, Dux, Bosch, and Aquamax with 10-year manufacturer warranties.
Seamless Changeover
Complete replacement service including removal, installation, gas/electrical connections, and compliance certification—all handled by licensed professionals.
Energy Efficient Upgrades
Switch to modern gas, heat pump, or solar systems and save $400-$800 per year on energy bills with improved efficiency.
Same-Day Service
Most replacements completed in 4-6 hours with hot water restored the same day. Emergency replacements available for failed systems.
Complete Package
Free disposal of old units, warranty registration, rebate assistance, and comprehensive cleanup—everything included in one service.
When To Replace Your Hot Water System (Not Repair)
Key indicators that replacement is more cost-effective than ongoing repairs
Age Over 10 Years
Time-BasedElectric storage systems last 8-12 years, gas systems 10-15 years. Once past this age, efficiency drops 20-30%, and repair costs escalate rapidly. Replacement delivers better value than maintaining an ageing system with declining performance and rising energy bills.
Rust-Coloured Water
CriticalRusty hot water indicates internal tank corrosion—the sacrificial anode has failed and the tank is deteriorating. This cannot be repaired; the tank will eventually burst. Replacement prevents emergency failures and potential water damage to your property.
Frequent Repair Costs
FinancialIf you have repaired your system 2-3 times in 12 months—replacing elements, thermostats, valves, or gas controls—the total repair cost likely exceeds 50% of a new system. Replacement eliminates ongoing repair expenses and provides 10-year warranty protection.
Inefficient Heating
PerformanceHot water running out quickly, taking longer to heat, or never reaching full temperature indicates failing elements or burner efficiency. Modern systems heat 30-40% faster and maintain consistent temperature—upgrading improves comfort and reduces energy waste.
Visible Leaks or Pooling Water
EmergencyWater pooling beneath the tank signals internal corrosion or failed pressure/temperature relief valve. Minor leaks worsen rapidly—full tank failures release 150-400 litres, causing significant water damage. Emergency replacement prevents costly property damage.
High Energy Bills
EfficiencyOld electric systems consume 30-50% more electricity than modern heat pumps or efficient gas systems. Annual running costs of $800-$1,200 for old electric drop to $300-$500 with heat pumps—replacement pays for itself in 3-5 years through energy savings.
Energy-Saving Upgrade Opportunities
Switch from inefficient electric to modern efficient systems and save hundreds annually
Electric to Heat Pump Upgrade
Heat pumps extract heat from ambient air—using 65% less electricity than traditional electric storage. Annual running costs drop from $900 to $300, saving $600/year. Government rebates of $1,000-$1,500 reduce upfront costs. Environmentally friendly with low carbon emissions.
Electric to Gas Continuous Flow
Gas instantaneous systems heat water on demand—no storage tank, no standby heat loss. Never run out of hot water, and reduce gas bills 40-50% compared to electric. Compact wall-mounted units free up floor space. Perfect for growing families and high-demand households.
Tank to Instantaneous Conversion
Replace bulky 150-400L storage tanks with compact wall-mounted continuous flow systems. Instant hot water, zero wait time, and reclaim valuable laundry or outdoor space. Gas or electric instantaneous options available with 10+ year lifespans and low maintenance requirements.
Old Electric to Solar Hot Water
Solar systems use free sunshine to heat water, reducing electricity bills by 60-70% annually. Ideal for sunny Sydney climate with 300+ sunshine days/year. Government rebates and STC credits reduce purchase costs by $1,500-$2,500. Environmentally sustainable with 15-20 year lifespans.
How Our Hot Water Replacement Service Works
Professional end-to-end changeover from assessment to warranty registration
System Assessment & Recommendations
We inspect your existing system, note its age, fuel type, capacity, and condition. We measure available space, check gas and electrical connections, and assess your property's hot water demand based on household size and usage patterns. You receive tailored recommendations comparing electric, gas, heat pump, and solar options with upfront pricing, energy cost projections, and available rebates.
Energy Upgrade Consultation
Our plumbers explain the benefits and costs of upgrading from electric to gas, heat pump, or solar systems. We calculate potential annual savings, rebate eligibility (NSW Energy Savings Scheme, STC credits), and payback periods. For conversions requiring new gas lines or electrical upgrades, we provide complete costings including all trades and compliance work.
System Selection & Sizing
Choose from Rheem, Rinnai, Dux, Bosch, Thermann, Aquamax, and other leading brands. We size systems correctly—avoiding oversized units that waste energy or undersized units that cannot meet demand. Storage tanks sized by household occupants (4-person = 135-170L), continuous flow by simultaneous outlets (2 bathrooms = 20-26L/min), heat pumps by climate zone.
Old System Isolation & Removal
We safely isolate water, gas, and electrical supplies before removing your old unit. Electric systems are de-energised and disconnected, gas systems purged and capped, tanks drained completely. Old units are carefully removed to prevent damage to walls, landscaping, or surrounding property. Removal includes disposal of all mounting brackets, pipes, and electrical conduits.
New System Installation & Connections
The new hot water system is positioned, mounted securely on walls or stands, and connected to existing or upgraded plumbing and energy supplies. Gas systems require licenced gas fitting with pressure testing and leak detection. Electric systems need compliant wiring and RCD protection. All connections meet AS/NZS 3500 plumbing standards and AS/NZS 3000 electrical standards.
Commissioning & Testing
We commission the new system by filling the tank, purging air, testing pressure relief valves, and verifying temperature settings. Gas burners are adjusted for optimal combustion efficiency. Electric elements and thermostats calibrated. Heat pumps tested for refrigerant charge and compressor operation. Hot water flow verified at all taps to confirm correct system operation.
Disposal, Certification & Warranty
Old hot water systems are removed from site and recycled responsibly—steel tanks scrapped for metal recovery, copper components recycled, refrigerants recovered from heat pumps. We provide compliance certificates (plumbing, gas, electrical), register manufacturer warranties (typically 5-10 years), and supply operation manuals. You receive before/after photos and maintenance schedules for warranty compliance.
Old vs New Hot Water Systems: What You Gain
Modern systems deliver superior efficiency, reliability, and warranty coverage
Energy Efficiency
Old System: Old electric systems: 60-70% efficiency, wasting 30-40% of electricity as heat loss from poorly insulated tanks and standby heating
New System: New heat pumps: 300% efficiency (COP 3.0+), modern gas: 85-90% efficiency, saving $400-$800 annually on energy bills
3-5x more efficient
Warranty Coverage
Old System: Old systems out of warranty: All repairs at owner's expense, typical repair costs $250-$600 per callout, no protection against failures
New System: New systems: 5-10 year manufacturer warranties on tanks, 1-3 years on parts/labour, comprehensive coverage against defects and failures
10 years warranty protection
Recovery Time
Old System: Old systems: 2-4 hours to reheat 150L tank after full use, inadequate for peak morning or evening demand in larger households
New System: New gas continuous flow: Instant unlimited hot water. New heat pumps: 1-2 hour recovery with improved insulation and faster heating
50-75% faster recovery
Running Costs (Annual)
Old System: Old electric 170L: $900-$1,200/year based on $0.30/kWh tariff rates and inefficient heating with poor tank insulation
New System: New heat pump 170L: $300-$400/year. New gas continuous: $450-$550/year. New solar: $150-$300/year with sunshine boosting
Save $500-$900/year
Same-Day Emergency Hot Water Replacement
Fast response for failed systems leaving you without hot water
24/7
Emergency Response
Call any time for emergency hot water replacement. We respond within 60-90 minutes to assess failed systems and arrange same-day replacement.
Same-Day
Changeover Service
Most emergency replacements completed within 4-8 hours. We stock popular systems in our vans for immediate installation and rapid service restoration.
No Wait
Minimal Downtime
Hot water restored same day in 90% of cases. We prioritise emergency replacements to minimise disruption to households with children, elderly, or medical needs.
When You Need Emergency Replacement
Emergency replacement is necessary when your hot water system has completely failed—no hot water at all, visible tank leaks creating water damage risk, gas leaks requiring immediate isolation, or electrical faults creating safety hazards. We provide emergency replacement for burst tanks, failed elements/thermostats beyond repair, corroded gas valves, and systems showing imminent failure signs.
Emergency surcharges apply for after-hours, weekend, or public holiday service (typically $200-$400 callout). However, emergency replacement prevents water damage (potential $5,000-$15,000 insurance claims) and restores essential hot water for hygiene, cooking, and comfort. Call 0404 939 121 for 24/7 emergency replacement service.
Hot Water Replacement Costs Sydney
Transparent all-inclusive pricing with removal and disposal included
Electric Storage Tank Replacement
Complete remove and replace service for 125-400L electric storage hot water systems. Includes removal and disposal of old unit, new tank supply and installation, electrical connections, pressure testing, and compliance certification.
Gas Continuous Flow Replacement
Replace old gas storage or continuous flow systems with modern efficient instantaneous units. Includes old system removal, new unit supply, gas fitting, electrical connections (for fan models), and gas compliance certificate.
Heat Pump System Replacement
Upgrade from electric storage to energy-efficient heat pump systems. Includes old unit disposal, heat pump supply, installation, refrigerant commissioning, electrical connections, and registration for government rebates (where eligible).
Solar Hot Water Replacement
Replace old systems with solar boosted hot water—roof panels and ground storage tank. Includes old unit removal, solar collectors, tank installation, plumbing, electrical backup element, and STC rebate administration.
Fuel Conversion (Electric to Gas)
Convert from electric to gas continuous flow—includes new gas line installation if required (up to 15m), gas meter upgrade assessment, new system supply, gas fitting, and electrical removal. Perfect for reducing running costs.
Emergency Replacement (Same-Day)
After-hours, weekend, or urgent same-day replacement surcharge for failed systems requiring immediate replacement. Includes rapid response, expedited installation, and priority scheduling to restore hot water within 4-8 hours.
What's Included In Every Replacement
- ✓ Free assessment and system sizing consultation before purchase
- ✓ Removal and responsible disposal/recycling of old hot water system
- ✓ Supply and installation of new system from leading brands
- ✓ All plumbing connections, pressure testing, and leak checks
- ✓ Licenced electrical work (electric systems) or gas fitting (gas systems)
- ✓ Commissioning, temperature calibration, and operational testing
- ✓ Compliance certificates for plumbing, gas, and/or electrical work
- ✓ Manufacturer warranty registration (5-10 years depending on brand)
- ✓ Operation manual and maintenance schedule for warranty compliance
Real Hot Water Replacement Results Across Sydney
Before-and-after examples from actual customer projects
Electric to Heat Pump Upgrade
Bondi, NSW
Old 170L Rheem electric storage tank 15 years old, consuming $1,100/year in electricity. Frequent element replacements ($350 each), rusty water indicating internal corrosion, slow 3-hour recovery time inadequate for 4-person household.
Replaced with Stiebel Eltron 270L heat pump. Annual energy costs dropped to $480/year—saving $620 annually. Faster recovery time, quieter operation, eligible for $1,200 NSW Energy Savings Scheme rebate. Investment paid back in 4.5 years through energy savings.
Emergency Gas System Replacement
Parramatta, NSW
Gas storage hot water system failed Saturday morning—no hot water for family with young children. Old Dux 135L gas tank 12 years old had corroded burner assembly, failed thermocouple, and leaking tank base creating water damage risk beneath house.
Emergency same-day replacement with Rinnai Infinity 26L continuous flow gas system. Installed within 6 hours on weekend. Unlimited hot water, wall-mounted to reclaim space, gas safety certificate provided. Coordinated with insurance company for tank failure claim.
Solar Hot Water Upgrade
Northern Beaches, NSW
Electric 250L hot water system costing $1,350/year to run for large family. Environmentally-conscious homeowners wanted sustainable hot water solution to reduce carbon footprint and benefit from Sydney's 300+ annual sunshine days.
Installed Solahart 302L solar hot water with roof-mounted evacuated tube collectors and electric boost. Running costs reduced to $250/year (boosting only)—saving $1,100 annually. Received $1,500 STC rebate plus $700 state incentive. Carbon emissions reduced by 2.5 tonnes/year.
Instantaneous Replacement
Inner West, NSW
Old Rinnai gas continuous flow system 15 years old experiencing intermittent ignition failures, inconsistent water temperature fluctuations ±10°C, and error codes requiring multiple service callouts ($280-$350 each). Control board and heat exchanger both showing age-related deterioration.
Replaced with new Rinnai Infinity N50 continuous flow—latest model with digital temperature control (±1°C precision), improved energy efficiency, smart error diagnostics. Consistent endless hot water for 2-bathroom property. Old unit recycled, 12-year parts warranty registered.
Old System Removal & Recycling Included
Environmentally responsible disposal at no extra cost
Complete Removal
We safely disconnect, drain, and remove your old hot water system—whether ground-mounted, wall-mounted, roof-installed, or internal. All mounting brackets, pipes, electrical conduits, and associated hardware removed.
Steel Tank Recycling
Steel storage tanks (electric and gas) are transported to metal recyclers where they are crushed and processed for steel recovery. Vitreous enamel linings separated, steel melted for reuse in manufacturing.
Copper Component Recovery
Copper heating elements, pipes, and heat exchangers are removed and sent to specialist copper recyclers. Copper is 100% recyclable indefinitely without quality loss—valuable material recovery.
Refrigerant Recovery
Heat pump systems contain refrigerants (R134a, R410A) that must be professionally recovered before disposal. We use certified refrigerant recovery equipment to prevent atmospheric release, storing refrigerants for reuse or destruction.
Electronics Recycling
Control boards, thermostats, timers, and electronic components are separated and sent to e-waste recyclers. Precious metals (gold, silver) recovered from circuit boards, hazardous materials safely processed.
Zero Landfill Goal
Over 90% of removed hot water systems are recycled or recovered—steel, copper, brass, aluminium, and electronics all diverted from landfill. Our responsible disposal practices align with NSW EPA waste reduction targets.
Disposal Included In Every Replacement
Unlike some plumbers who leave old hot water systems on-site or charge extra for removal, Panther Plumbing Group includes complete removal and recycling in all replacement quotes. We handle disconnection, draining, removal from property, transport to recycling facilities, and provide disposal documentation if required for strata or commercial compliance records. This saves you hiring skip bins ($200-$400) or arranging separate waste collection—everything included in one fixed price.
Hot Water Insurance Claims Assistance
We coordinate with insurers for burst or failed hot water systems
When Hot Water Damage Is Insurable
Most home and contents insurance policies cover sudden and unexpected hot water system failures—including burst tanks, ruptured pressure relief valves, and catastrophic leaks causing water damage. Insurance typically covers the cost of emergency replacement plus water damage repairs to flooring, walls, and contents.
To lodge successful claims, insurers require evidence of sudden failure (not gradual deterioration due to poor maintenance), photos of damage, plumber's reports, and itemised repair quotes. We provide comprehensive documentation to support your insurance claim, liaising directly with assessors and loss adjusters to expedite approval.
Documentation We Provide For Claims
- Detailed plumber's report: Documenting failure cause, damage extent, and urgent replacement necessity
- Before photos: Visual evidence of burst tank, water damage, corrosion, or failed components
- Itemised quote: Transparent breakdown of emergency replacement costs, labour, materials, and disposal
- Compliance certificates: Post-replacement plumbing, gas, and electrical certificates verifying code-compliant installation
- Insurer liaison: We communicate directly with assessors, answer technical questions, and justify emergency pricing
Emergency Replacement While Claim Processes
Insurance claims can take 7-14 days for assessment and approval, but you need hot water immediately. We perform emergency same-day replacements and wait for insurance payment—you pay only your excess upfront, insurer reimburses the balance. This prevents extended disruption while claim processes. If your claim is denied, we offer flexible payment plans. Call 0404 939 121 to discuss insurance-related emergency replacements.
Leading Hot Water System Manufacturers
We supply and install all major Australian and international brands
Rheem
Electric, Gas, Heat Pump, Solar
Rinnai
Continuous Flow, Storage
Dux
Electric, Gas, Solar
Bosch
Continuous Flow, Heat Pump
Thermann
Electric, Gas
Aquamax
Electric, Gas, Heat Pump
Stiebel Eltron
Heat Pump, Electric
Solahart
Solar, Heat Pump
Authorised Installer & Warranty Registration
Panther Plumbing Group is an authorised installer for all major hot water brands. We register manufacturer warranties immediately after installation (5-10 years depending on brand and model), ensuring you receive full warranty coverage. Our licenced plumbers maintain manufacturer training and certification for compliant installations meeting Australian Standards AS/NZS 3500.
Hot Water Replacement FAQs
Common questions about replacing hot water systems
How do I know if I need replacement or just repair?▼
Can I upgrade from electric to gas hot water during replacement?▼
How long does hot water replacement take?▼
What size hot water system do I need for my household?▼
Do you remove and dispose of my old hot water system?▼
Are there government rebates for hot water replacement?▼
Do you offer same-day emergency replacement service?▼
What warranty do I get on a replacement hot water system?▼
Can you help coordinate hot water replacement with my insurance claim?▼
Complete Hot Water Solutions
Pair replacement with these complementary services
Hot Water Installations
New hot water system installations for renovations, new builds, and property developments. Expert sizing, system selection, and turnkey installation services.
Learn More
Hot Water Repairs
Rapid repair service for faulty hot water systems—elements, thermostats, valves, leaks, and ignition issues. Same-day service available to restore hot water quickly.
Learn More
Gas Plumbing
Licenced gas fitting for gas hot water systems—new gas lines, meter upgrades, pressure testing, and compliance certification for safe operation.
Learn MoreWhat Sydney Customers Say
Real experiences from hot water replacement customers across Sydney
"Old hot water system finally died. Panther Plumbing Group removed it and installed a new heat pump system same day. Explained the rebates and handled all the paperwork. Fantastic service!"
"Upgraded from electric to gas continuous flow. Panther Plumbing Group's installation was seamless, old unit removed and recycled. Hot water is now endless and our bills have dropped by $600 a year. Brilliant work!"
"Replaced our 12-year-old system with a modern Rheem unit. Panther Plumbing Group's team was professional, site was left immaculate, and warranty registration was completed on the spot. Highly recommend!"
Hot Water Replacement Services Across Sydney
Professional hot water system changeovers in all Sydney suburbs
Need Professional Hot Water Replacement?
Upgrade to efficient systems with same-day changeover and 10-year warranties—call now