# Commercial Hot Water Perth | Body Corporate | HWS Perth > Large-scale commercial hot water for Perth developments, body corporates and businesses. Compliant sizing, redundancy and maintenance contracts. Request a quote. URL: https://perthhotwatersystem.com.au/commercial-hot-water/ ![Commercial hot water units in the plant room of a Perth apartment building](/images/misc/bank-of-commercial-hot-water-units-in-the-plant-ro.webp) # Commercial & Body Corporate Hot Water in Perth Last updated: 10 August 2026 Large-scale hot water for residential developments, body corporates and Perth businesses, with compliance and maintenance contracts. - verified\_user Licensed & insured - schedule 24/7 Emergency Service - request\_quote Free upfront quotes - verified 100% Satisfaction Guarantee Get a Free Quote [/contact/ →](/contact/) call 08 6243 6734 [tel:+61862436734 →](tel:+61862436734) JOB TYPE ## Commercial WA LICENSED verified PLUMBER & GAS - check\_circle Solutions for developments and body corporates - check\_circle Capacity and redundancy planning - check\_circle TMV and AS/NZS 3500.4 compliance - check\_circle Staged replacement programs INDICATIVE Free quote Book this service [/contact/ →](/contact/) star 4.9 (150+ Google reviews) verified\_user Licensed & Insured schedule 24/7 Emergency Service task\_alt 1,000+ jobs completed ## Hot water for buildings, not just houses We deliver large-scale hot water solutions for Perth developments, body corporates and commercial properties, from capacity and redundancy planning through to thermostatic mixing valve compliance under AS/NZS 3500.4 and ongoing maintenance agreements. Commercial hot water is a different problem to residential, and it draws on the same licensed trade base as our residential hot water system Perth [/ →](/) work. A domestic failure is an inconvenience for one household. A plant room failure in a 40-unit apartment block is a building full of cold showers, a flood of calls to the strata manager, and an emergency spend that was never in the budget. The work is therefore less about the units themselves and more about capacity modelling, redundancy, compliance records and planning renewals before they become emergencies. ![Plumber testing a thermostatic mixing valve on commercial hot water pipework with a digital thermometer](/images/misc/plumber-using-a-digital-thermometer-to-test-a-ther.webp) ### Compliance is the baseline Under AS/NZS 3500.4, hot water must be stored at 60C or above to control Legionella, while being delivered at a maximum of 50C to personal hygiene outlets, and 45C in healthcare, aged care and childcare facilities. Reconciling those two requirements is the job of a tempering valve or, in higher-risk settings, a thermostatic mixing valve (TMV). TMVs in healthcare, aged care and childcare facilities require annual testing and servicing with records kept. We carry out that testing, document the results, and provide a written report in a format that goes straight into a committee agenda or an audit file. ### Capacity and redundancy planning We model peak simultaneous demand across the dwellings or fixtures rather than simply adding up nominal fixture counts, which tends to produce plant that is either wastefully oversized or embarrassingly short at 7am. Then we build in tolerance, so the loss of a single unit degrades service rather than eliminating it. Manifolded banks of continuous flow units suit buildings with variable demand and give natural redundancy. Large storage cylinders with good recovery suit buildings with sharp morning peaks. Many sites end up with a hybrid. The right answer depends on the building, the plant room space, the available gas or electrical supply, and how the committee wants to stage capital spend. ### Staged replacement without emptying the building Nobody wants a building-wide shutdown. We schedule replacements in stages so only part of the site is offline at a time, run changeovers after hours where required, and give strata managers written notice periods they can circulate in advance. On larger renewals we work to a multi-year plan so the spend is predictable rather than reactive. ### Maintenance agreements A maintenance agreement covers scheduled preventative servicing, an asset register with expected renewal dates, TMV and compliance testing records, and priority emergency dispatch. For buildings where a failure affects many residents or interrupts trading, that priority response is usually the whole point. Talk to us about a site assessment. For related reading, see our guide on body corporate and commercial hot water compliance [/guide/body-corporate-commercial-hot-water/ →](/guide/body-corporate-commercial-hot-water/) and tempering valve and TMV testing in Perth [/guide/hot-water-tempering-valve-tmv-testing/ →](/guide/hot-water-tempering-valve-tmv-testing/) . For urgent plant failures, our 24/7 emergency service [/emergency-hot-water-repairs/ →](/emergency-hot-water-repairs/) covers commercial sites as well as homes. ## What's included - check\_circle Solutions for developments and body corporates - check\_circle Capacity and redundancy planning - check\_circle TMV and AS/NZS 3500.4 compliance - check\_circle Staged replacement programs - check\_circle Maintenance contracts Transparent pricing ## How much does commercial cost in Perth? Commercial work is quoted per site after a capacity, compliance and access assessment. Staged replacement plans and maintenance agreements are priced separately. ### Compliance audit TMV testing, temperature verification and reporting Quoted per site custom quote per site - check\_circle Annual TMV testing - check\_circle Delivery temperature verification - check\_circle Written compliance report - check\_circle Defect list with priorities Get a Free Quote [/contact/ →](/contact/) Most common ### Staged replacement Multi-unit replacement with minimal tenant disruption Quoted per site custom quote per site - check\_circle Capacity and redundancy planning - check\_circle Staged, tenant-friendly scheduling - check\_circle After-hours changeovers - check\_circle Full certification on completion Get a Free Quote [/contact/ →](/contact/) ### Maintenance agreement Scheduled servicing with priority response Quoted per site custom quote per site - check\_circle Scheduled preventative servicing - check\_circle Priority emergency response - check\_circle Asset register and reporting - check\_circle Budget forecasting for renewals Get a Free Quote [/contact/ →](/contact/) Prices are indicative only. Every job is quoted upfront and in writing after we check your site, so there are no surprises. Low-interest financing is available on larger upgrades. Why us ## Why choose Hot Water System Perth for commercial? verified\_user ### Compliance-first approach AS/NZS 3500.4, thermostatic mixing valve testing and 60C storage for Legionella control are handled as core requirements, not extras. engineering ### Redundancy planned in Shared facilities cannot afford a single point of failure. We design capacity so one unit down does not mean a building full of cold showers. handshake ### Tenant disruption minimised Staged replacements, after-hours changeovers and clear notice periods. Strata managers get the schedule in writing before work begins. schedule ### Maintenance agreements Scheduled servicing with an asset register, testing records and budget forecasting so committees can plan renewals rather than react to failures. local\_shipping ### 24/7 priority response Contracted sites get priority emergency dispatch, which matters when a hot water failure affects dozens of residents at once. bolt ### Documented and reportable Written reports, defect lists with priorities and compliance records suitable for presenting to a body corporate committee. Process ## How our commercial works 01 search ### Site and asset review We inspect the existing plant, record the asset list, measure delivery temperatures and identify compliance gaps before proposing anything. 02 request\_quote ### Capacity and redundancy plan We model peak demand across the building and design for redundancy, so a single unit failure does not leave tenants without hot water. 03 build ### Staged works Replacements are scheduled to minimise tenant disruption, including after-hours changeovers and clear written notice periods. 04 task\_alt ### Certify and maintain Compliance certification on completion, TMV testing records, and an optional ongoing maintenance agreement with priority response. ## Need commercial in Perth? Free written quote, licensed plumbers, 24/7 for emergencies, backed by our 100% satisfaction guarantee. call 08 6243 6734 [tel:+61862436734 →](tel:+61862436734) Get a Free Quote [/contact/ →](/contact/) Our work ## Commercial jobs around Perth Real jobs from around the metro. Click any image to enlarge. ## How Hot Water System Perth compares | Feature | Typical provider | HWS Perth | | --- | --- | --- | | TMV testing records | Ad hoc or missing | Annual testing with written records | | Redundancy planning | Replace like for like | Capacity modelled with failure tolerance | | Tenant disruption | Building-wide shutdown | Staged and after-hours scheduling | | Reporting | Verbal update | Written report and prioritised defect list | | Emergency response | Standard queue | Priority dispatch for contracted sites | Reviews ## What customers say about our commercial Rated 4.9 from 150+ Google reviews across the Perth metro. starstarstarstarstar > "Managed a staged hot water replacement across our apartment block with minimal disruption to tenants. Clear on compliance and easy to deal with." Lisa H. Rivervale starstarstarstarstar > "They gave us a written defect list with priorities and costs so the committee could actually make a decision. First contractor who has done that." Strata Manager, East Perth East Perth starstarstarstarstar > "We run a small hospitality venue and the TMV testing was overdue. Sorted, documented and back within compliance the same week." Nathan D. Cannington Got questions? ## Commercial FAQs ### Do you handle body corporate and strata hot water systems? expand\_more Yes. We work with strata managers and body corporate committees across the Perth metro on capacity planning, redundancy, TMV compliance, staged replacement and ongoing maintenance. We provide written reports and prioritised defect lists so committees can make funding decisions. ### What compliance applies to commercial hot water in WA? expand\_more AS/NZS 3500.4 is the core standard. In practice that means water stored at 60C or above for Legionella control, delivered at a maximum of 50C to personal hygiene outlets, and 45C in healthcare, aged care and childcare settings, which requires thermostatic mixing valves rather than simple tempering valves. ### How often does a TMV need testing? expand\_more Thermostatic mixing valves in healthcare, aged care and childcare facilities require annual testing and servicing, with records kept. Commercial and shared residential facilities should be on at least an annual inspection cycle. We provide written test records suitable for audit. ### Can you minimise disruption to tenants during a replacement? expand\_more Yes, that is usually the deciding factor on these projects. We stage replacements so only part of the building is offline at a time, schedule changeovers after hours where required, and provide written notice periods that strata managers can circulate in advance. ### What is the difference between a tempering valve and a TMV? expand\_more Both limit the temperature of water delivered to outlets. A tempering valve is the simpler, less precise device used in most residential settings. A thermostatic mixing valve responds faster and more accurately, and is required in higher-risk environments such as healthcare, aged care and childcare facilities. ### Do you offer maintenance contracts? expand\_more Yes. A maintenance agreement covers scheduled preventative servicing, an asset register with expected renewal dates, compliance testing records, and priority emergency response. For buildings where a hot water failure affects many residents, that priority response is usually the main value. ### How do you plan capacity for an apartment building? expand\_more We model peak simultaneous demand across the dwellings rather than adding up nominal fixture counts, then build in redundancy so the loss of a single unit does not take the whole building offline. Manifolded continuous flow banks and multiple storage cylinders both have their place depending on the site. ### Can you work on our existing plant, or only new installs? expand\_more Both. Much of our commercial work is servicing, repairing and progressively renewing existing plant. We will always tell you where an asset has useful life remaining rather than pushing a full replacement. ### Do you provide written reports for committee meetings? expand\_more Yes. Site inspections come with a written report covering current condition, compliance status, a prioritised defect list and indicative costs, formatted so it can go straight into a committee agenda. ### How quickly can you respond to a commercial hot water failure? expand\_more We run 24/7 dispatch across the Perth metro, and contracted maintenance sites receive priority. For buildings where a failure affects multiple dwellings or a trading business, that response time is usually the reason to have an agreement in place before something goes wrong. ### Still have a question? Talk to a licensed Perth plumber. No call-out surprises, no obligation. Get a Free Quote [/contact/ →](/contact/) Call 08 6243 6734 [tel:+61862436734 →](tel:+61862436734) ## Related guides Detailed answers to the questions we get asked most about commercial. Explainer ### Body Corporate & Commercial Hot Water: Compliance and Sizing Commercial and body corporate hot water in Perth: TMV compliance, capacity and redundancy planning, staged replacement and maintenance agreements. [Body Corporate & Commercial Hot Water: Compliance and Sizing →](/guide/body-corporate-commercial-hot-water/) ## Related services ![Licensed Perth plumber installing a new hot water system on the exterior wall of a suburban home](/images/misc/licensed-perth-plumber-mounting-a-brand-new-hot-wa.webp) ### Hot Water System Installation Supply and compliant installation of new hot water systems, sized right, installed to WA code, with free old-tank removal. [Hot Water System Installation →](/hot-water-system-installation/) ![Emergency plumber working on a failed hot water unit at a Perth home](/images/misc/perth-plumber-kneeling-beside-a-failed-hot-water-u.webp) ### 24/7 Emergency Hot Water Repairs Rapid-response 24/7 dispatch for urgent hot water failures, burst tanks and major leaks, metro-wide and same day. [24/7 Emergency Hot Water Repairs →](/emergency-hot-water-repairs/) ![Licensed gas fitter servicing a continuous flow gas hot water unit in Perth](/images/misc/licensed-gas-fitter-servicing-a-continuous-flow-ga.webp) ### Gas Hot Water Systems Continuous flow and storage gas hot water, natural gas and LPG, installed and repaired by licensed gas fitters. [Gas Hot Water Systems →](/gas-hot-water/) ![](/images/hero/licensed-perth-plumber-in-work-polo-finishing-a-ho.webp) 24/7 emergency call-outs available ## Ready to book commercial? Large-scale hot water for residential developments, body corporates and Perth businesses, with compliance and maintenance contracts. Free upfront quote, no obligation. Get a Free Quote [/contact/ →](/contact/) call 08 6243 6734 [tel:+61862436734 →](tel:+61862436734) - check\_circle Fully licensed & insured plumbing and gas professionals - check\_circle All major Australian & German brands serviced - check\_circle 100% customer satisfaction guarantee on all work