Heat Pump Hot Water Systems in Altona Meadows

The two things we pull out most often here are a 250 to 315 litre electric storage tank and a 1990s gas storage unit, both original to the house or a straight swap done fifteen years ago. Neither owes anybody anything at this point. The electric ones are the expensive ones to keep, because an element converts one unit of electricity into one unit of heat and nothing more.

A heat pump does the same job on roughly a third of the electricity by moving heat out of the outside air instead of generating it. On an Altona Meadows household with a decent morning shower load, that is the largest single running cost reduction available short of changing how the house is heated.

Meadows blocks are generous, with double garages and long side runs. That gives real choice about where the unit stands, which is a luxury compared with the terrace suburbs. The most common position is the original tank slab, because the plumbing is already there and the run to the bathrooms is short.

The one thing to watch is the same thing that makes EV charger quotes here vary so much: distance. A long run from the meter box to a rear or detached garage adds cable, and if you decide to put the hot water unit somewhere convenient rather than somewhere close, that distance turns into cost. We measure it at quote rather than estimating it.

Boards of this vintage generally have circuit breakers, which is a step ahead of a ceramic fuse board, but very commonly they do not have RCD protection on every final subcircuit. Adding a new dedicated hot water circuit is a good moment to bring the rest of the board up to current standards rather than leaving half the house unprotected.

We quote that separately and honestly. Sometimes the board has room and the answer is a single new RCBO. Sometimes the board is full, the enclosure is too small, and the sensible answer is a proper upgrade that also leaves capacity for whatever comes next, which in this suburb is usually a bigger solar array or an EV charger.

Altona Meadows has some of the best solar roof space in the west. Large single-storey tiled roofs with unshaded north and west faces make 10kW and larger arrays practical here in a way they are not on a Yarraville cottage. Plenty of homes already have that array in place.

If you have panels, set the heat pump to heat in the early afternoon. Export is worth very little now, so you are effectively converting cheap surplus generation into hot water you use that night and the next morning. It also happens to be when the outside air is warmest, which is when a heat pump runs at its best. Most controllers do this with a simple time window, and we set it up before we leave.

The Meadows is close enough to the bay for salt to be a factor, though it is a milder version of what we see in Seaholme or along the Altona foreshore. It is still enough that we use coastal rated fixings and a weatherproof isolator rather than treating it as an inland install.

The practical advice is the same as anywhere near the water. Keep the unit off bare ground, keep the coil clear of garden growth, and give it a fresh water rinse in spring. It is a small habit that shows up as extra years on the outdoor components.