Full plumbing services for residential, commercial and strata properties — from fast-response repairs to bathroom fit-outs, hot water replacements and complex commercial fit-outs.
AHHAC provides commercial and domestic plumbing services in Sydney, Melbourne and Brisbane, from repairs, blocked drains and leak detection to hot water replacement, heat pumps, water filtration and commercial fit-outs. Our licensed in-house plumbers have worked on Sydney homes since 1998, when we started as AJ's Plumbing, and our phone line is answered by tradesmen, not a call centre. Same-day hot water replacement is available in most metro areas, with Rheem and Rinnai stock at all six showrooms.
Reviewed by the AHHAC Technical Team — licensed plumbers & hydronic engineers, NSW Lic 262528C.How we write & review
We're not a single-trick mob. From the smallest leak to the largest commercial install, we bring the same engineering rigour and trade quality.
AS/NZS 3500-compliant fit-outs, planned maintenance, BMS-integrated central plant.
Hot water heat pumps. 75% lower running cost vs electric. STC rebates available.
Hydronic for new builds, electric for renovations. Pure quality-of-life upgrade.
Up to 90% heat recovery. Fresh, filtered air for tight-built modern homes.
Whole-home or under-sink RO. Free water quality test before specification.
Rainwater harvesting, greywater, smart irrigation. 30–50% water bill reduction.
Storage, instantaneous, gas, electric, solar, heat pump — we install, service and replace the lot. Authorised supplier of Rheem and Rinnai. Same-day replacement available in most metro areas.
Hot water overview →Our line is answered by tradesmen — never call-centre operators. Fully-stocked vans for first-visit fix.
Most plumbing jobs that need a second visit go that way for one reason: the wrong part, or the wrong information, reached site first. Our vans carry the common-fail parts, but a two-minute brief on the phone is what lets us load the right ones. Whether it is a weeping flexi hose under a vanity or a plant-room fault in a commercial building, these are the questions our tradesmen will ask.
Domestic and commercial plumbing run on different clocks. At home the priority is stopping the damage and getting hot water back, often the same day. On commercial and strata sites we work to agreed response tiers, plan shutdowns around trading hours and tenants, and hand over AS/NZS 3500 compliance paperwork that facility managers can file against the asset. Our commercial plumbing team also runs planned maintenance, so faults are found on a scheduled visit rather than late on a Friday.
If something is actively leaking, turn the water off at the meter first, then call. Burst pipes, sewer overflows and no hot water go straight to our plumbing repairs and callouts crew. If you are planning a replacement rather than reacting to a failure, the hot water systems overview explains the options, and strata committees weighing a central plant upgrade can read how we approached one in our Sydney strata hot water case study.
Written from on-site experience by the AHHAC Technical Team.
AHHAC's in-house design and service team — licensed plumbers and hydronic engineers (Lic 262528C) who have designed and installed 2,400+ hydronic heating, cooling and hot water systems across Australia since 1998.
Every plumbing and hot water job is assessed on site, carried out by our own licensed plumbers and gasfitters to AS/NZS 3500 (plumbing) and AS/NZS 5601 (gas), pressure-tested and documented, and backed by ongoing service. Nothing is subcontracted out.
Fast — when you call, you reach an experienced tradesman, not a call-centre operator. Typical same-day dispatch for burst pipes, blocked sewers, hot water failures, boiler shutdowns and gas leaks, with fully-stocked vans for a first-visit fix.
Same-day in most metro areas. We carry full Rheem and Rinnai stock at all six showrooms, plus Viessmann DHW heat pumps. We handle STC rebate paperwork, compliance certificates, and old unit removal as part of the install.
Yes — we run a dedicated commercial team for hotels, hospitals, schools, offices and retail. We also work with body corporates and strata managers across multiple buildings, with SLA-backed response times and planned maintenance contracts.
Six factors decide it: household size, peak simultaneous flow, available fuels, roof orientation, budget split between up-front and running cost, and how long you'll live in the home. We'll size, spec and quote three options within 24 hours of your enquiry.
Yes. We use thermal imaging, acoustic sensors and hydrogen tracer gas to pinpoint leaks within 5–10cm — no demolition. We provide insurance-grade reporting and a same-day quote on the repair.