Hot Water Repairs Ferntree Gully

Hot water in a cold suburb

Ferntree Gully mornings in July are some of the coldest in suburban Melbourne, and hot water systems work hard here. Incoming water is colder, tanks take longer to recover and exposed units on the south side of a house lose heat fast. When a system is already tired, winter is when it fails.

What we see on local homes

Older homes often have a gas storage unit outside the laundry or kitchen, sometimes on its third or fourth replacement since the house was built. Many 1980s and 1990s homes have electric storage tanks in an outside cupboard. Renovated and newer homes lean towards continuous-flow gas units on an outside wall, and more households are moving to heat pumps and solar boosted systems.

Common faults

Gas storage: the pilot will not stay lit, usually a worn thermocouple or gas control; the burner lights but water stays lukewarm; or the tank leaks from the base, which means it has corroded through.

Electric storage: a tripped circuit, a failed element or thermostat, or a relief valve that drips constantly. Hot water that runs out quickly often means one element has failed.

Continuous-flow: error codes, ignition failures, cold water sandwiches and units that will not fire on low flow. Causes include flow sensors, ignition parts, a blocked inlet filter and low gas pressure.

Heat pump and solar: slow recovery, iced evaporators on frosty mornings, noisy fans, faulty sensors or controllers, failed circulation pumps and booster elements.

How we repair

Our plumbers hold water and gas licences and carry common parts for the main brands, including thermocouples, elements, thermostats, relief valves and tempering valves. We test gas supply, ignition and flame on gas units; element, thermostat and power on electric units; and read codes and test sensors on continuous-flow, heat pump and solar systems.

If a repair makes sense, you get a fixed price and we usually finish on the spot. If a part has to be ordered, we tell you how long it will take and whether a temporary fix can keep hot water running.

Repair or replace

A unit under ten years old with a faulty thermocouple, element or valve is usually worth repairing. A tank leaking from the base is not repairable. An older unit with an expensive fault may be better replaced, particularly if a more efficient system would lower running costs. We set out the options and leave the choice with you.

Relief and tempering valves

Every storage unit has a temperature and pressure relief valve. A small release while heating is normal. Constant dripping, pouring water or a valve that never releases needs attention, and high mains pressure can be a cause. In bathrooms, a tempering valve mixes hot and cold water to a safe delivery temperature. If shower temperature has changed, the tempering valve may be at fault rather than the heater.

Indoor gas units and safety

Some older homes have gas storage units inside a laundry. Indoor units need a working flue and good ventilation. Soot, a smell or condensation around an indoor unit is a warning sign; turn it off and have it checked. If any gas unit smells of gas, bangs when lighting or shows yellow, lazy flames, turn it off at the gas cock and call us.

Servicing

Replacing a storage tank's sacrificial anode before it is used up can add years to the tank. Lift the relief valve lever gently every six months. Continuous-flow units benefit from a service every one to two years, and heat pumps and solar systems from periodic checks of sensors, pumps and the booster.

Rentals

A failed hot water service is an urgent repair under Victorian rental law. We work with agents and landlords to restore hot water fast, with a clear report on whether repair or replacement was needed.

Gas storage hot water

Gas storage units are still the most common type in Ferntree Gully. They heat a tank of water with a burner underneath and keep it hot ready for use. Most faults involve the pilot light, the thermocouple, the gas control valve, the burner or the relief valve. A pilot that will not stay lit often has a worn thermocouple or a dirty pilot assembly, which we can usually replace or clean on the spot. A unit that lights but does not heat properly may have a failing gas valve or a build-up of sediment in the tank. If water is leaking from the base of the tank itself, the tank has rusted through and needs replacing.

Continuous-flow gas

Continuous-flow units heat water only when a hot tap is turned on, so they never run out. They are compact and can be mounted on an outside wall. When they fail, they usually show an error code on the controller or the unit itself. Common causes include ignition faults, flow sensor problems, gas pressure issues, blocked filters and, in exposed spots, frost damage. We read the error code, test the components and repair or replace the faulty part. We also check that the gas supply is large enough, because an undersized gas pipe is a common reason for lukewarm water in busy households.

Electric storage

Electric storage units heat water with an element inside the tank, controlled by a thermostat. When an electric unit stops heating, the element, thermostat or a tripped safety cut-out is usually to blame. If the unit trips the circuit breaker on your switchboard, the element may have failed and let water reach the wiring. We test and replace elements and thermostats, check the anode and tell you honestly if the tank is close to the end of its life.

Heat pumps and solar

Heat pumps and solar hot water systems are becoming more common in Ferntree Gully, especially in homes with rooftop solar. Heat pumps can develop faults in the fan, compressor, controls or element boost, and solar systems can have issues with the panels, pump, controller or tank. We service and repair both, and if a system is beyond repair, we help you choose a replacement.

Lukewarm or inconsistent water

If your hot water is lukewarm, runs out quickly or swings between hot and cold, there are several possible causes. A thermostat may be set too low or failing. A tempering valve that mixes hot and cold water before it reaches the bathroom may be faulty. A broken dip tube in a storage tank can mix incoming cold water with the hot at the top. In continuous-flow systems, a low gas supply or a blocked filter can limit the temperature. We test each part to find the real cause rather than guessing.

Noisy hot water units

Rumbling, popping or banging from a storage unit usually means sediment has built up at the bottom of the tank. As the burner or element heats the water trapped under the sediment, it boils and makes noise. It reduces efficiency and can shorten the life of the tank. A flush may help in some cases, but in an older unit it often signals that replacement is not far away.

Discoloured or smelly water

Brown or rusty hot water can mean the inside of the tank is corroding, especially if the cold water is clear. A rotten egg smell often comes from a reaction between the sacrificial anode and bacteria in the water. Replacing the anode with a different type can solve the smell, and checking the anode regularly helps a tank last longer. We test and advise on the best fix.

Safety checks

Every storage hot water unit has a temperature and pressure relief valve that releases water if the tank gets too hot or the pressure gets too high. It should be eased open every six months to keep it working. If it drips constantly, the valve may be worn or the water pressure may be too high. Gas units should also be checked for proper flueing and combustion. We include these checks in every service.

Hot water in units and townhouses

Units and townhouses often have hot water squeezed into a cupboard, a roof space or a narrow side passage. Indoor gas units need correct flueing to carry exhaust outside, and roof-space units need a safe tray and drain in case of leaks. When we service or repair these units, we check that the installation is safe as well as fixing the fault. If a replacement is needed, we make sure the new unit suits the space and meets current rules, which sometimes means moving it to an outside wall.

Pilot lights and wind

Ferntree Gully's exposed spots get strong gusty winds, especially on the slopes. Outdoor gas storage units can have their pilot light blown out, leaving you with cold water. If it happens often, a wind shield, a different position or an electronic ignition unit may help. Relighting a pilot is usually straightforward following the instructions on the unit, but if it will not stay lit, the thermocouple is probably worn and needs replacing.

Water temperature and scalding

Storage hot water must be kept at 60 degrees or higher to stop bacteria such as Legionella growing in the tank. That is hot enough to scald, so new and replacement installations need a tempering valve to deliver water at no more than 50 degrees to bathrooms. Tempering valves wear over time and should be checked. If your shower runs hotter or colder than it used to, the valve may need servicing or replacement.

When to call

Do not wait until the hot water stops completely. Call us if you notice water around the base of the unit, rust stains, rumbling noises, discoloured water, a relief valve that drips constantly, or hot water that runs out sooner than it used to. A repair done early is quicker and often avoids a cold shower and an emergency replacement.

Ferntree Gully ground and pipes

Ferntree Gully's ground changes as you climb towards the ranges: clay and silty loam on the lower streets, rockier, steeper ground near Upper Ferntree Gully and The Basin. Most homes built before the 1980s were connected with earthenware sewer pipe, and on a slope every joint moves a little over the years and lets roots in. Water service lines from the meter are often long and run through rocky ground or under established gardens. Stormwater has to be carried down the block and away from the house. We use cameras, locators and pressure tests to see what is happening before we dig.

How we approach the job

From your call to the finished job