Plumbers (Contractors) – Hot Water, Heat Pumps & Air Conditioning
OPT Energy is seeking experienced and reliable licensed plumbing contractors for ongoing residential projects involving hot water systems, heat pumps, air conditioning installations, and associated plumbing works across Victoria. Whether you are an independent plumber or operate your own plumbing business, this is an opportunity to establish an ongoing working relationship with a growing energy-efficiency company.
Key responsibilities
Install and replace residential hot water systems and heat pump water heaters
Carry out plumbing works associated with replacing existing gas hot water systems with electric heat pump systems
Complete water supply connections, pipework, valves, drainage, and other associated plumbing works
Install residential air conditioning systems, including multi-split systems, where appropriately licensed and qualified
Complete associated HVAC installation works, including pipework, drainage, and other related tasks within your authorised scope
Inspect, diagnose, troubleshoot, and rectify plumbing, hot water, and air conditioning installation issues
Conduct quality checks and ensure completed work meets applicable Australian standards and regulatory requirements
Complete required compliance certificates, job reports, photographs, and service documentation
Coordinate with electricians, refrigeration technicians, HVAC installers, and other trades to ensure smooth project completion
Communicate professionally with customers and maintain a high standard of workmanship and service
About you




A valid and current Victorian plumbing licence appropriate to the work being performed
Relevant qualifications and authorisations for water supply and gas-fitting work, where required
Proven experience in residential plumbing, hot water systems, and heat pump installations
Knowledge of applicable Australian plumbing standards, VBA requirements, and relevant safety regulations
Your own tools, equipment, and suitable transport
Appropriate insurance, including Public Liability Insurance
Solid troubleshooting skills and attention to detail
Excellent communication skills and a professional approach to customer service
Ability to work independently, manage scheduled jobs, and complete work within agreed timeframes
Ability to provide required compliance documentation and service records
About us
OPT Energy is a growing company operating under the Victorian Energy Upgrades (VEU) program. We specialise in replacing traditional gas hot water systems with energy-efficient electric heat pump systems, helping households reduce energy costs and carbon emissions. With a strong and consistent pipeline of residential projects across Victoria, we are expanding our contractor network and seeking experienced, reliable plumbing contractors and installation teams to partner with us on an ongoing basis.
Consistent residential project opportunities across Victoria
Potential for ongoing work and long-term contractor partnerships
Competitive contractor rates based on experience and job scope
Opportunities to work across hot water, heat pump, and air conditioning installations
Professional job coordination and operational support
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📌 Plumbers (Contractors) – Hot Water, Heat Pumps & Air Conditioning (Melbourne)
🏢 OPT ENERGY
📍 Melbourne