103 Avoca Street, Randwick. Eastern Suburbs plumbers since 1930

Open 24/7 02 9398 1397

Hot water plant for unit blocks

When the whole building loses hot water, it's everyone's shower. We look after central plant in unit blocks.

Plumber and customer checking the gas and hot water outside a house
  • Licensed since 1930Six generations, same family
  • 90 years with Master PlumbersRecognised by Master Plumbers NSW in 2025
  • Licence 494711CNSW contractor licence
  • Fully insuredWorkers comp and unlimited common law cover
  • Lifetime guaranteeOn our workmanship
  • Champion Awards finalist2026 Australian Trades Small Business awards

Central hot water in unit blocks

Plenty of apartment buildings heat water in one place and send it to every unit. That might be a bank of heaters or storage tanks in a plant room, a basement or on the roof, with pumps that keep hot water moving around the building.

When it's working, nobody thinks about it. When it isn't, the strata manager's phone rings all morning.

Plumber talking to a customer about his hot water system

When the whole building loses hot water

If a shared system goes down we treat it as an emergency. We find out what has failed, get hot water back on as quickly as the fault allows, and tell you what's needed for a lasting fix.

Call 02 9398 1397. We answer 24/7.

Recirculation pumps

A recirculation pump keeps hot water moving through the building so it's hot at the tap, not just in the plant room. When a pump fails, the units furthest away run cold first. We repair and replace recirculation pumps and the valves around them.

Planned checks

Hot water plant lasts longer and fails less when someone looks at it regularly. We can check the heaters or tanks, valves, pumps and controls on a set schedule and tell the committee what's coming up, so a replacement can be planned instead of rushed. That can be part of a planned maintenance program for the building.

Older buildings sometimes still run on roof hot water storage tanks. We look after those too. See heritage plumbing.

Common questions

The whole building has no hot water. What do we do?

Call us on 02 9398 1397. We answer 24/7 and treat a shared hot water failure as an emergency.

Do you replace central hot water plant?

Yes. We'll tell you what's failing, what the options are, and give you a fixed price before we start.

Why are some units getting lukewarm water?

Often it's the recirculation pump or a valve on the return line. The units furthest from the plant usually notice first.

Can you check our hot water plant on a schedule?

Yes. We can set up planned checks and give the committee a written report with what's coming up.

Do you look after older roof hot water tanks?

Yes. Roof hot water storage tanks are still in plenty of older buildings and we repair and replace them.

Where we do hot water plant work

Based in Randwick and working right across the Eastern Suburbs, including:

Google reviews

What our customers say

4.886 Google reviewsRead them on Google

These plumbers are great. They come on time, they know what they're doing and the prices are fair. We have used them for strata work and I have also used them myself. Highly recommended!

Kim WilsonStrata and home · Google review

We have been using McElroy Plumbing for close to 20 years, their response to our calls has been immediate and the problem fixed promptly in a first class manner and the costs reasonable. We recently had a hot water failure and a new one installed within 24 hrs. We would recommend McElroy for any plumbing job.

Max McLeodCustomer for 20 years · Google review

All the plumbers that have been sent out to our place from McElroy Plumbing are professional, friendly, on time and get the job done. They explain what the issue is and provide solutions. Very proactive, great work and affordable. What more do you want in your plumbers?

Jim VartisHome · Google review

Got a plumbing problem?

Call the Randwick office any time, 24/7. Or send us the details and we'll get back to you with a quote.

No call out fee for homes, strata buildings and businesses alike. No voucher to claim, nothing to mention when you book.

Call nowGet a quote