Hot Water System Repairs & Replacement — Box Hill

Losing hot water is one of those problems that can’t wait until next week. Sedcon Plumbing handles hot water system repairs, replacements and upgrades across Box Hill, Blackburn, Mont Albert and surrounding eastern suburbs — with same-day service available for urgent breakdowns.

Common Hot Water Problems in Box Hill

  • No hot water at all — failed element (electric), pilot light out (gas), or tripped thermostat
  • Lukewarm water — failing element, undersized system, or thermostat set too low
  • Water heater leaking — from the relief valve (pressure issue) or tank corrosion (tank replacement needed)
  • Rust-coloured hot water — sacrificial anode rod has depleted, tank is corroding internally
  • Hot water running out quickly — element failure, sediment build-up reducing capacity, or system undersized for current household
  • Banging or rumbling sounds — sediment on the tank floor being disturbed by heating

Hot Water System Types We Service in Box Hill

Box Hill homes run a mix of system types — we service and replace all of them:

  • Electric storage hot water: The most common type in older Box Hill homes. Relatively simple to repair; replacement is straightforward when the tank fails
  • Gas storage hot water: Faster recovery, lower running costs than electric storage. We service all major brands including Rheem, Rinnai and Dux
  • Gas continuous flow (instant hot water): No tank, endless hot water. Rinnai and Bosch are the most popular in the Box Hill area
  • Heat pump hot water: Energy efficient — uses ambient air to heat water. Growing in popularity across Melbourne’s eastern suburbs with the Victorian Government’s rebate scheme
  • Solar hot water with gas or electric boost: We repair boost systems and replace failed solar storage tanks

Should You Repair or Replace Your Hot Water System?

As a general guide:

  • Under 5 years old: Almost always worth repairing — element, thermostat and valve replacements are inexpensive compared to a new unit
  • 5–10 years old: Depends on the fault. Minor repairs yes; major component failure on an older tank may not be economical
  • Over 10 years old with a tank leak: Replace. A leaking tank cannot be repaired and is approaching end of life anyway

We’ll give you an honest recommendation when we assess your system — not just push the option that earns us more.

Upgrading Your Hot Water System in Box Hill

If you’re replacing a system, it’s worth considering an upgrade at the same time. Heat pump hot water systems are now heavily rebated under the Victorian Energy Upgrades program — some Box Hill households qualify for rebates that reduce the installed cost significantly. We can advise on current eligibility when we quote.

Frequently Asked Questions — Hot Water Box Hill

How long does a hot water system replacement take?
A standard storage tank replacement takes 2–3 hours. Continuous flow units are typically faster. You’ll have hot water the same day.

Can you replace a hot water system the same day?
Yes — for standard electric and gas storage units, same-day replacement is available when we have stock. Call early to confirm availability.

What size hot water system do I need?
As a guide: 1–2 people need 125–160L electric or 135L gas; 3–4 people need 250–315L electric or 170–180L gas; 5+ people need 315–400L or a continuous flow system.

Is a hot water system leaking an emergency?
A weeping temperature pressure relief (TPR) valve can often wait a short time. An actively leaking tank or burst pipe requires immediate attention to prevent water damage.


Sedcon Plumbing — Hot Water Specialists, Box Hill & Eastern Melbourne
Call 0413 647 557 for same-day service | VBA Lic. 120392 | Book online →

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Call now — 0413 647 557