Cold shower this morning? A hot water unit that died overnight is one of the most common Prime Plumbing & Gasfitting callouts. We diagnose gas, electric and heat pump units across Melbourne's south-east, give you the honest repair-or-replace recommendation in writing, and where replacement is the right call we quote the unit on the same visit.
Quick answer: No hot water is usually one of four things: a failed heating element or thermostat (electric), a pilot or ignition fault (gas), a leaking tank, or a tripped safety device. Prime Plumbing & Gasfitting diagnoses the fault, quotes repair versus replacement honestly, and fits a new unit if the tank is done. Call 0475 407 670; same-day help where the schedule allows.Hot water units have a service life, gas storage typically 8-12 years, electric resistive 10-15 years, heat pump 12-15 years. Before that lifespan a single failure is usually worth repairing. Past it, repair becomes diminishing returns. Prime Plumbing & Gasfitting's diagnosis covers two questions: what failed, and is the unit worth investing in. If a 14-year-old gas storage unit just lost its thermocouple, replacing the thermocouple buys you maybe another year, replacing the unit buys you another 10. We tell you which the maths actually favours.
A no-hot-water callout that drags into next week means cold showers and a household running on kettle-boiled water. We work no-hot-water as a same-day priority where availability allows, diagnosis on the first visit, and a written quote for repair or replacement on the spot. Where parts need ordering or a replacement unit needs sourcing, we'll let you know up-front so you can plan.
Related plumbing topics:
Any gas hot water work in Victoria, pilot relight, thermocouple replacement, gas valve service, full unit replacement, requires a Type A gasfitter endorsement under Energy Safe Victoria. Prime Plumbing & Gasfitting gasfitters hold the endorsement and the licence number is on every quote and invoice. Unlicensed gas work voids your insurance.
Electric storage and heat pump units have an electrical supply that's technically not Prime Plumbing & Gasfitting's scope to disconnect, that's an electrician's licence. We coordinate the isolation point with your electrician where the unit needs to be replaced, so neither trade is waiting on the other.
Replacement hot water units come with a BPC Compliance Certificate, an Energy Safe Victoria gas certificate (where the unit is gas), and the manufacturer's warranty registered in your name. Email PDF after the install, useful for insurance renewal and any future sale.
Five minutes at the unit confirms the failure mode, pilot, thermocouple, element, sensor, tempering valve, leak. Most no-hot-water callouts are one of seven well-understood causes; identifying which one is fast.
For a unit inside its expected service life, we quote the repair on the spot. For a unit past it, we quote the replacement, same brand if you want, or the recommended modern equivalent. Both quotes are written, fixed-price, and you decide which path before any work starts.
Common faults (thermocouples, heating elements, tempering valves, common gas valves) are usually parts we can get in quickly, often same-day for the most common brands. Where a part is harder to source, we'll tell you up-front so you can plan around the timing.
For replacements, common-spec gas storage and electric storage units can usually be sourced quickly. Heat pump units sometimes have longer lead times. We'll tell you which timeline applies and the cost difference before you commit.
Repair invoices include the BPC licence number and the parts replaced. Replacements include the Compliance Certificate (BPC + ESV gas where applicable) and the manufacturer warranty registration. PDF emailed after the visit.
Often yes, where the diagnosis is a common parts replacement (thermocouple, element, tempering valve). For a full unit replacement same-day depends on stock, common gas storage and electric storage commonly yes; heat pump normally 1-3 days.
Diagnosis is part of the call-out fee, no separate hourly charge while we figure out what failed. The repair or replacement is quoted in writing before work starts. We don't do hourly meter-running on hot water diagnosis.
Age matters most. Gas storage 12+ years, electric storage 15+ years, heat pump 13+ years, replacement is typically the better long-term choice. Newer units are almost always worth repairing. Prime Plumbing & Gasfitting's diagnosis includes the recommendation; the decision is yours.
Repeat pilot failures often mean a failing thermocouple, a common, $200+ GST-ish repair on most units. Sometimes it's a flue or vent issue, especially on indoor units. Either way the diagnosis is straightforward.
Two likely culprits: tempering valve failure (mixing too much cold into the delivery), or sediment-coated heating element on electric storage. Both are repairable; both are easy to diagnose on a single visit.
For gas storage: relight the pilot per the unit's instructions. For electric: check the circuit breaker for the unit. Beyond that, don't, incorrect resets on modern units can lock the unit out and require a service tech to clear.
Most days yes, the south-east corridor is our regular service area. Same-day depends on first-call availability; we'll tell you when you call whether we can fit you in today or tomorrow morning.
