Just Moved In and No Hot Water? The New Home Owner’s Guide

Breathe: Sydney’s most common moving-week drama is taking a cold shower on your settlement day, and the overwhelming majority of cold showers of the moving kind are really nothing more than a system turned off, shut down or simply not known by the new owners. The full “new-home hot water” guide: how to locate the device, determine what you got, safely getting it going, and the checks you need to do after one week.

Step One: Find The System (They Hide In Six Places)

The treasure hunt is the starting point, so that’s what you should start with. Sydney’s hot water systems are all in a short list of habitats: against an external wall (the classic cylinder beside the laundry or kitchen, or a compact wall mounted box, that box is a gas continuous flow unit); in the garage or laundry (typical of electric storage systems); in a hallway or laundry cupboard (especially in apartments and townhouses, look for the door nobody opened at time of inspection); on the roof (thermosiphon solar, with a horizontal tank attached to the panels; or a split system with a tank at the ground; or a gas continuous flow unit); in the roof space (rare, mostly older gravity-fed hot water systems; not only for hot water reasons, but also for flood risk reasons); in apartments, nowhere at all (if there’s no system, it’s a strata hot water system, yours is the manager’s problem, and time of settlement is a strata call, not a plumbing call). If you don’t know what to do, follow the pipes from the meter or gas line, they’ll show you the way.

Step Two: Read The Compliance Plate (The Single Most Useful Photo You’ll Take)

Each system will have a compliance plate, a metal or foil label on the system body, which answers, in one place, the questions you might otherwise have to pay someone to answer: manufacture date (the number that matters the most, see step 6), capacity in litres, model and serial numbers (the keys to parts, error-code lookups, and any remaining warranty), and energy information. Take the picture standing there, while you can, and file the picture somewhere findable, future-you, mid-breakdown, phone in hand, will describe the system to a plumber with professional precision, instead of “it’s white and sort of big.” As you read: cylinder with a flue is gas storage; cylinder with an electric conduit but no flue is electric; the wall box is continuous flow; a fan unit on top of or next to a tank is a heat pump; a plate will confirm your deduction in print.

Step Three: Why It’s Probably Off, Not Broken

The secret of the settlement day: the systems of houses are intentionally turned off more frequently than you’re warned. Agents and departing owners turn off equipment during vacancies (as the going away guides tell them) and conveyancing lapses leave gas accounts disconnected, and final inspections leave valves half turned. Run the wake-up list sequentially. Electric: check the hot water switch (usually at the switchboard on a separate controlled-load section, marked “HWS”, “hot water” or “CL”) and make sure it’s turned on: a fair number of moving-week problems start there. Gas: be sure the panel pilot is on, and your gas account is turned on (no account, no gas, no fault, check cooktop), then relight the panel pilot according to the instructions on the panel. All systems: check that the isolation valve on the cold line supplying the unit is open (which is normally closed for a vacancy) and that the water main is fully open. Then wait honestly: for gas storage, a stone-cold tank needs an hour of recovery, for electric, it takes several hours (or next night’s off-peak, next step, or the next day in the morning), and the judgement on the inherited system is made then, not twenty minutes after the breaker is switched.

Step Four: The Tariff Surprise Nobody Explains At Settlement

If your system is electric, the one legacy you will have that will affect your hot water usage more than any other is the controlled-load (off-peak) tariff. Much of Sydney’s electric tanks turn on overnight during low cost periods of the day, smart working out economics and surprising behaviour if no one explained it to you, the heating centres are all cold when you turn on the tap in the morning and “hot” when you turn on the tap in the evening after the sun has gone down, but no amount of staring will alter their schedule. Your first electricity bill will have a controlled-load line, then you will find the dedicated board, and then you’ll find the boost switch that many setups have, the legitimate override that starts heating right away at normal rates for guest weekends and teenage eras. If you know what the tariff is on day one, you won’t have to call out and you won’t have to deal with the false alarm (“it’s broken every evening!”).

Step Five: The Week-One Safety And Baseline Checks

When hot water comes on, spend 20 minutes customising the system. Release the TPR valve: raise the lever of the relief valve for a few seconds, check it drains and snaps back, this is the first of six monthly checks and it is a quick check that the valve hasn’t been frozen by previous owners. Find and practise the isolation valves, the isolation and house-main valves, turn each valve a quarter and back, they will move, but not on the night you need them, so practise first. Confirm tempering: run a hot tap over a cheap thermometer; if the water is around 50°C, that’s a sign the house has a tempering valve working as intended, and if it runs much hotter than that, it probably doesn’t, which is a genuine conversation about safety. Inspect and clean flexi hoses: under each sink and vanity, check for rust freckles or bulging braided hoses, you’ve inherited their ages with them too and they are the most common cause of flooding in the house. Then take the meter baseline reading: with everything turned off, watch the water meter for an hour, if the metre moves you have inherited a leak and the 1st week is the cheapest time to find out.

Step Six: Do The Age Arithmetic And Build The File

Last but not least, the strategic move. Then take that compliance-plate date and compare it with the honest lifespans: storage tanks 8-12 years; continuous flow 15-20; heat pumps 10-15, and don’t forget that pre-purchase building inspections are only for the building and rarely include a hot water system. The verdicts: under five years, relax, note the date, diarise the year five anode service. Five to 8, get a baseline service today (anode check, sediment flush, valve inspection); no service history, which extends the life of the tank and it begins your service history. After 8 years, and particularly 10 years, budget for replacement on your timeline, not the tank’s; nothing can force you into anything when it’s running quietly and a new owner finding out that it failed after 10 years was assumed to have all the information and never did the sum. If replacement is in the near future, remember to take into account electric-to-heat-pump incentives (NSW scheme support up to about $640 plus federal certificates close to $860) before opting for like-for-like. Put the plate picture, the baseline service report and this arithmetic aside, the mystery appliance is now a managed asset.

Renters: The Day-One Version

Everything that immediately follows is factored into the above: when you move in, a hot water failure is on the landlord’s “urgent repairs” list in NSW, meaning they are required to act on it immediately, and your notice is counting. The reasonable self-checks first: the breaker (on and holding), recovery wait (the same as any occupant would do), the same steps worth noting in your report (“breaker on, pilot won’t hold”). There are others, the landlord is responsible for them, and if not, you can get a same day written report with your observations, which will provide you with your fastest hot shower and paperwork.

Questions We’re Often Asked

No hot water on settlement day, should we be chasing the previous owners?

Rarely worth it, it’s usually much easier to get a system switched off than to find a hidden problem, and the list above is a list of things to do to get a system up and running again within an evening plus a recovery window. If the system stays cold even after you have the power, gas, valves and honest waiting checked, then you have a real fault, and at this stage, a plumber is more expeditious and satisfies you more than a conveyancer.

How do I know if my apartment has central hot water?

Three tell-tale signs: no hot water unit anywhere (look in all cubbies, as well as the balcony), hot water coming in quickly and without running any units, and a strata levy or by-law that refers to central plant. Confirmed central means that outages are building matters, report them to the building manager, and know that troubleshooting fixes won’t occur on the individual unit level.

The previous owners left no paperwork at all. What can a plumber reconstruct?

In one visit, almost everything that matters: system type, age from the plate, condition of anode and sediment, valve health, tempering compliance, and an honest years-remaining verdict, the baseline service is just designed for history-free systems. The warranty is not recoverable without the paperwork, but sometimes the serial number can be recovered from the manufacturer; only worth one phone call on younger systems.

Shouldn’t the building inspection have warned us the system was ancient?

On the day, standard pre-purchase inspections will confirm that the system is in place and operating, but will not check the age, anode condition or remaining years of service life. So it’s a known absence, it surprises new owners all the time, and it’s precisely why the compliance-plate arithmetic in step six ought to be in each moving-week routine. The positive side: the gap can be closed this weekend for the price of a label.

The Bottom Line

A cold shower in your new home: quite an unlikely emergency, really, it’s an introduction. Discover the system, take a picture of the plate, perform the wake up list (breaker, gas, valves, patience), understand the tariff before it gets to you, and conduct the week one safety sweep and perform the age arithmetic that the building inspection didn’t. After an hour of paying attention in a moving week, the house’s most mysterious appliance becomes one you know, maintain, and replace when the time is right, not when it’s right for them. Welcome home: hot shower may be one switch away.

Premium Sydney Plumbers: licensed plumbers servicing hot water systems of all types in Sydney, same-day service available. Any hour of the day or night, if hot water is a problem in your house, call 1300 026 452, we’re here to help.