When a Canberra homeowner’s hot water system failed right before winter, Water Tight plumber Canberra’s fast, expert response ensured the problem was diagnosed and fixed within the hour, and their hot showers were back the same day.
Problem
A homeowner in Lawson reported their hot water system producing only lukewarm water, a frustrating and potentially costly issue just as Canberra’s colder months were setting in.
With winter approaching, lack of reliable hot water isn’t just an inconvenience; it can quickly become a health and comfort issue. Older or faulty pressure and temperature relief valves (PTR valves) are one of the most common causes of hot water inefficiency in Canberra homes.
This particular system showed symptoms of pressure loss and continuous water discharge from the relief outlet, leading to poor temperature retention and energy inefficiency.
The homeowner reached out after noticing the issue worsening overnight, and our team quickly scheduled an inspection the next morning.
Assessment
Andre, one of our licensed hot water specialists, arrived on-site as scheduled and performed a full visual inspection and operational test of the system. The hot water unit was running, but the tank couldn’t maintain temperature, a telltale sign of a failing relief valve.
Testing confirmed that the PTR valve was continuously running, allowing hot water to escape through the overflow pipe. This constant water loss prevented the heater from maintaining proper internal temperature.
After discussing findings with the homeowner, Andre recommended immediate replacement of the valve to restore full system function. The assessment was completed efficiently and clearly explained, ensuring the customer understood both the cause and the solution.
Our hot water repairs in Canberra service always focuses on fast, precise diagnosis, not guesswork.
What We Did
Andre sourced an RMC P&T Relief Valve HT55 (700kPa, 15mm), a high-quality, compliant replacement part from Reece Plumbing.
The failed valve was safely isolated, removed, and replaced like-for-like with the new 700kPa unit. Once installed, Andre pressure-tested the system, flushed air from the lines, and confirmed correct operation across all outlets.
To ensure reliability, he also took time to explain the valve’s function and maintenance requirements to the homeowner, helping them understand how this small component protects both their system and home from excessive pressure build-up.
As the 5-star review noted:
“Excellent and fast service from Andre who correctly assessed and replaced the faulty pressure valve on our HWS, and even patiently explained its function to us… all done within an hour. Thank you for making sure we have hot showers again… just in time for winter!”
That attention to detail and communication is what sets Water Tight Canberra apart, efficient, compliant, and customer-focused service every time.
Materials & Standards
We only install high-quality, AS/NZS 3500-compliant components to ensure system safety and longevity.
The RMC 700kPa Pressure & Temperature Relief Valve is designed for durability and precise pressure control, protecting hot water systems from dangerous pressure build-up.
All work was completed in accordance with ACT plumbing regulations and manufacturer specifications, ensuring warranty compliance and long-term performance.
Results
Before: The hot water system struggled to reach full temperature, constantly discharging water and wasting energy.
After: The new valve restored proper pressure balance, eliminated continuous water loss, and returned consistent, hot water throughout the home, all within an hour.
The result? Another delighted homeowner and a glowing 5-star review:
“Excellent and fast service from Andre who correctly assessed and replaced the faulty pressure valve… Thank you for making sure we have hot showers again, just in time for winter!”
Tips
To avoid unexpected hot water failures, have your pressure relief valve inspected every 2–3 years. These small, inexpensive parts can fail over time — especially in Canberra’s hard water conditions.
If your hot water is lukewarm or constantly dripping from the overflow pipe, it’s time to call an expert for hot water system repairs in Canberra. Or if you need drain cleaning in Canberra, leak detection or an emergency plumber Canberra locals can depend on, get in touch with us today.
Location Notes
Lawson, located in the Belconnen region of Canberra, features many newer developments where compact electric storage systems are common. However, these units can still suffer from valve fatigue due to Canberra’s variable water pressure and mineral content.
Our Belconnen plumbing team regularly services homes in the area, providing expert hot water maintenance and replacements before small issues become major failures.
Gallery
Before: Faulty pressure relief valve causing lukewarm water and overflow.
After: New 700kPa valve installed, system tested and delivering perfect hot water again.
“Excellent and fast service… all done within an hour!” — 5-Star Google Review
Contact the team at Water Tight Canberra today on (02) 6195 9991.
