Tenant Troubleshooting for
No Hot Water
Know Your HWS Unit Type
When faced with a no hot water issue, the first step is to identify the type of unit you have, as troubleshooting steps can vary based on the unit's design. Hot Water Systems come in various types, each with unique components and methods of heating water. Determining your unit type — whether it’s a gas, electric, tankless, or solar — will guide you to the most effective diagnostic and repair steps.
Use this guide to quickly identify your heater type and follow the relevant steps to get your hot water flowing again.
Different Unit Types
Gas Instantaneous
A gas instantaneous hot water system is a compact, rectangular box mounted on an external wall, connected to LPG gas bottles or a natural gas meter.
Gas Storage
A gas storage hot water system is an upright, rectangular unit placed outside, freestanding and not attached to a wall.
Electrical Storage
An electrical storage hot water system is the most common unit type. It’s an upright cylinder, often found outside but can be internal or external, in cupboard, or in the garage.
Solar HWS
A solar hot water system has solar panels on the roof, with the storage unit located either on the ground or mounted alongside the panels.
Heat Pumps
A heat pump hot water system is a cylinder-shaped unit, similar to a typical electric storage unit, but with a pump on top.
Gas Instantaneous Diagnostics
Gas Storage Diagnostics
Electrical Storage Diagnostics
Solar HWS Diagnostics
Heat Pumps Diagnostics
Further Assistance and Safety Information
Regular maintenance and careful troubleshooting can keep your hot water system running efficiently, but remember that certain issues may require professional help. If you’ve followed the steps in this manual and still have concerns, please contact a licensed technician or your property manager to avoid further complications or potential safety risks.
For more in-depth knowledge, consult the system's manufacturer manual or check their website for detailed specs, maintenance tips, and safety recommendations. This guide is intended for general troubleshooting only and does not replace professional inspections.