Why does my combi boiler provide heat but no hot water?
Find answers to common boiler questions from CANRO Heating & Cooling. Our licensed technicians answer frequently asked questions about boiler problems, maintenance, and repairs for Greater Vancouver homeowners.
Expert Answer from CANRO
A combi boiler that provides central heating but no domestic hot water typically has a failed diverter valve that is not switching between heating and hot water modes. Other causes include a blocked plate heat exchanger, faulty flow sensor, or DHW thermistor problem. Professional diagnosis is needed to identify which component has failed.
Related Boiler Information for Vancouver Homes
This answer applies to most boiler systems found in Greater Vancouver homes. However, specific models and installation configurations may have unique considerations. For personalized advice about your specific system, contact CANRO Heating & Cooling for a professional consultation.
Need Professional Boiler Service?
If you need hands-on boiler service, CANRO Heating & Cooling provides comprehensive diagnostic, repair, and maintenance services throughout Greater Vancouver. Our licensed technicians bring real-world expertise to every service call. Call (604) 359-1081 or email to schedule an appointment.
Safety Reminder
If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.