Heat pump not registered
The single most common Thermann problem we see is not mechanical — an unregistered heat pump loses warranty cover. Worth checking your paperwork now rather than at the point of failure.
A modern range covering electric, gas and heat pump — often a strong-value option when replacing an older system.

Thermann is a Reece-supplied range covering electric storage, gas continuous flow and heat pump systems.
Warranty terms vary by series; heat pump models generally require registration and licensed installation.
Common electric and continuous flow components available through trade supply in Geelong.
Thermann storage tanks are typically planned around 8–12 years, continuous flow units longer, and heat pump models around 10–15 years.
Weighing up whether to fix or replace a Thermann unit? Read our repair or replace guide and the Geelong replacement cost guide. If you have no hot water right now, start with the no hot water troubleshooting guide or call for emergency hot water help.
Answer a couple of quick questions so we can get your hot water sorted.
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The single most common Thermann problem we see is not mechanical — an unregistered heat pump loses warranty cover. Worth checking your paperwork now rather than at the point of failure.
The unit fires intermittently or not at all on low-flow outlets. Usually the flow sensor or a partially closed isolation valve.
The 250L and 315L tanks used in bigger Highton and Grovedale family homes see heavy cycling; elements are a straightforward stocked replacement.
R-Series units are audible. Rattle rather than hum usually means mounting feet or a fan bearing, not a failing compressor.
Thermann parts are supplied through trade channels rather than held on every van, so an out-of-warranty tank needing multiple components is often more economically replaced than repaired in stages.
Our repair or replace guide sets out the full decision, and the Geelong replacement cost guide explains what changes the price. Symptoms are covered in common hot water problems and the hot water FAQ.
Tell us the model and the symptom — or the error code if the unit shows one — and we'll diagnose the fault properly, then explain whether repair or replacement makes more sense for your Thermann system before any work begins.
Servicing central Geelong, Newtown, Belmont, Highton, Grovedale, Corio, Lara, Leopold and the Bellarine.
Send through a quick enquiry and we'll get back to you fast to help sort your hot water.