Updated October 2026
Marks Point runs out into the lake on a narrow, low-lying spit, with salt water close on both sides and a mix of older and rebuilt homes. Lake Macquarie Hot Water connects you with licensed hot water plumbers who service Marks Point.
Salt water on both sides
This is one of the most exposed positions in the city for an outdoor unit. Lake Macquarie is a coastal saltwater lake with a permanently open, trained entrance at Swansea, so the water either side of this spit is salt water and the wind carries it. Tanks, heat pumps and continuous flow units here lose casings, brackets, flue terminals and external valves well before the same unit would inland.
The housing adds to it. Older beach and lakeside stock means systems that have been replaced more than once, with the current unit often the renovation-era one and now at end of life. Being low-lying matters for where a unit sits too, because a base in standing water after heavy rain is a short path to a corroded foot and a seized valve.
Common hot water calls in Marks Point
- Heavy corrosion on exposed outdoor units and fittings
- Systems past the end of their working life
- Units mounted too low and sitting in standing water
- Failed elements, thermostats and igniters
- Relief valves seized or weeping on old units
Repair, replace or upgrade
A part is a repair, a leaking cylinder a replacement. On a site like this the position is as important as the product: get the new unit off the ground, out of the prevailing salt-bearing wind, and clear of sprinklers. A heat pump still suits the climate, provided it is specified with corrosion protection and sited with care.
What it costs in Marks Point
Typical ranges, ex GST: repairs $150 to $600, electric storage from $800 to $2,500 installed, gas and continuous flow $1,200 to $3,500, heat pumps $3,000 to $6,000 before certificates. A replacement quote that includes a raised, sheltered position costs slightly more and generally buys years.
Frequently asked questions
Why does my outdoor unit rust so quickly here?
Because there is salt water on both sides of you. The lake is salt water, not fresh, and the entrance at Swansea stays open to the sea, so the air on this spit carries salt from whichever direction the wind is coming.
Should the new unit be raised?
Where it can be, yes. A proper stand or wall bracket keeps the base out of standing water and spray, makes the underside serviceable, and is one of the cheapest things you can do to extend the life of the unit.
Is a tank or a wall-mounted unit better in this position?
Both corrode in salt air, so it comes down to space, fuel and what the household needs. What matters more is which wall it goes on and how well it is mounted. Ask the plumber to look at the site before recommending anything.