Can you replace the plate heat exchanger (dhw) on my Rinnai boiler?

Yes. BoilerPart.ca supplies and professionally installs the genuine Rinnai plate heat exchanger (dhw) across Greater Vancouver. Our licensed technicians diagnose the fault, fit the correct OEM part, and test the system.

Do you sell the Rinnai plate heat exchanger (dhw) on its own?

No. Boiler parts are supplied and installed by our licensed technicians as part of a repair — we do not sell parts for individual or DIY purchase. We install the Rinnai plate heat exchanger (dhw) as part of a certified repair so it is fitted correctly, tested for safety, and keeps your Rinnai warranty valid.

How do I know my Rinnai plate heat exchanger (dhw) has failed?

Typical symptoms include: Lukewarm or fluctuating hot water; Hot water only when heating is on; Slow to heat at the tap; Cold water sandwich. On Rinnai boilers this can also show as Error 11 No Ignition or Error 12 Flame Failure. We confirm the diagnosis before any work.

Rinnai · Combustion & Gas

Rinnai Plate Heat Exchanger (DHW) Replacement in Greater Vancouver

Genuine Rinnai plate heat exchanger (dhw), supplied and professionally installed by Technical Safety BC–licensed gas fitters. Never sold for DIY.

Call (604) 359-1081 Request Service

The Plate Heat Exchanger (DHW) on Your Rinnai Boiler

The plate heat exchanger is the small brazed-plate unit in a combi boiler that transfers heat from the primary heating circuit to your domestic hot water on demand. Scale build-up is the number-one cause of "lukewarm hot water" complaints on combi boilers in hard-water and mineral-rich areas.

On Rinnai systems — including models such as i-Series i090, i120, M-Series — a failing plate heat exchanger (dhw) often shows up as error 11 no ignition or related symptoms. We diagnose it precisely and install the correct genuine Rinnai part.

Typical Lifespan

8-12 years

Brand

Rinnai

Part Category

Combustion & Gas

Safety Warning

Hot water that runs hot only while the heating is on usually means a scaled DHW plate exchanger or diverter valve.

Signs of a Failing Rinnai Plate Heat Exchanger (DHW)

Lukewarm or fluctuating hot water

Hot water only when heating is on

Slow to heat at the tap

Cold water sandwich

Reduced flow rate

Parts Are Professionally Installed — Not Sold for DIY

For your safety and to keep your manufacturer warranty valid, BoilerPart.ca does not sell loose boiler parts over the counter or for self-installation. Under BC regulations, gas appliance components must be installed by a licensed gas fitter. Every part we source is genuine OEM and is professionally fitted, tested, and certified by our Technical Safety BC–licensed technicians as part of a complete repair or installation.