How Much Does a Thermann Hot Water System Cost?

Thermann pricing varies because the brand covers conventional electric storage, smart electric, gas storage, continuous flow, heat pump and solar. The prices below are pulled directly from JR Gas & Water's live Thermann collection.

Thermann Electric Hot Water Systems

Thermann electric storage is designed for homes wanting a familiar, straightforward stored-hot-water system. Thermann's current manufacturer range covers compact 25L and 50L systems plus larger household capacities from approximately 80L through to 400L.

JR's current Thermann range includes common family replacement sizes such as 125L, 250L and 400L, subject to availability.

Thermann Smart Electric Hot Water

Thermann Smart Electric takes a conventional electric storage cylinder and adds app-based control over when and how the system heats.

The Thermann Control app supports operating modes including Manual, Eco, Holiday and Schedule. This can help households shift water heating toward lower-cost tariff periods or daytime solar generation rather than heating unnecessarily throughout the day.

Smart Electric is available across multiple capacities within Thermann's broader range, including sizes from approximately 80L to 400L.

Thermann Continuous Flow Gas Hot Water

Continuous-flow gas is one of Thermann's strongest product categories. Thermann currently offers several families including G-Series, R-Series and the high-efficiency C7.

Rather than storing a full cylinder of hot water, continuous-flow systems heat water while the tap is operating. This keeps the unit compact and allows hot water to continue without depleting a storage tank.

Thermann C7 High-Efficiency Continuous Flow

Thermann C7 is the premium high-efficiency continuous-flow pathway within the brand. The current C7 is a 26L-class condensing gas water heater.

Condensing technology captures additional heat from the exhaust gases to preheat incoming water. Thermann states that the C7 uses around 15% less gas than its standard 6-star 26L continuous-flow systems under comparable conditions.

The C7 is therefore most relevant to households that want to retain gas but improve efficiency rather than moving to heat pump or electric hot water.

Thermann Gas Storage Hot Water

Thermann also offers traditional gas-storage systems, with current manufacturer capacities including 135L and 170L.

Gas storage combines a stored volume of hot water with burner recovery, meaning usable hot water depends on both tank size and how quickly the burner reheats incoming cold water.

Thermann Heat Pump Hot Water Systems

Thermann heat pumps transfer heat from the surrounding air into stored water rather than relying only on conventional electric-resistance heating.

Thermann's broader manufacturer range includes both integrated and split heat pumps. Integrated systems combine the tank and refrigeration equipment into one unit, while split systems position the heat-pump module separately from the storage cylinder.

Current integrated Thermann heat pumps use modern controls and app connectivity, with operating modes that can align heating with solar PV or preferred electricity periods.

Thermann Solar Hot Water Systems

Thermann also offers electric-boosted solar hot water systems in larger household storage capacities. Current manufacturer information lists 250L, 315L and 400L solar configurations.

Solar suitability depends on roof orientation, collector location, shading, household demand and installation access. The electric boost provides backup heating when available solar energy is insufficient.

What Size Thermann Hot Water System Do I Need?

Thermann sizing depends first on the technology. Electric storage, Smart Electric, heat pump and solar systems use stored-water capacity, while continuous-flow gas systems are selected primarily by litres per minute and simultaneous demand.

For stored hot water, JR's sizing method uses approximately 40 litres per person per day for light usage, 50 litres for average usage and 65 litres for higher usage before matching demand to a practical tank capacity.

For continuous-flow gas, the important question is how many showers, taps and appliances may operate at the same time.

Thermann Smart Electric vs Heat Pump

Smart Electric and heat pump systems address energy use in different ways.

Smart Electric can be attractive where a simple storage replacement and controllable heating schedule are priorities. Heat pump hot water is more relevant where reducing electricity consumption is the main goal.

Replacing an Existing Hot Water System with Thermann

Thermann's broad range makes it useful for both like-for-like replacements and technology changes.

An old electric cylinder can be replaced with conventional Thermann electric storage, upgraded to Smart Electric or changed to heat pump hot water. Gas customers can replace storage with storage or compare modern continuous-flow options.

The replacement does not need to use the same capacity or technology as the old system. Current household demand, energy source, tariffs and installation conditions should all be reconsidered first.

Thermann Heat Pump & Solar Rebates

Eligible Thermann heat pump and solar hot water installations can qualify for Small-scale Technology Certificates where the exact model and installation meet the applicable scheme requirements.

Thermann's current heat-pump range is promoted as eligible for applicable federal and state incentive programs. Exact eligibility and benefit should be confirmed against the product and installation.

Is Thermann a Good Hot Water System?

Thermann provides a broad mainstream range covering nearly every major residential hot water pathway: conventional electric storage, smart electric, gas storage, continuous-flow gas, solar and heat pump technology.

The brand is distributed nationally through Reece, giving it a substantial Australian plumbing-supply network and established product support.

Its strongest advantage for many homeowners is choice. A customer can stay within the Thermann family while comparing a low-complexity electric replacement, app-controlled storage, high-efficiency gas or heat-pump upgrade.

Thermann Hot Water Installation Brisbane & Gold Coast

JR Gas & Water supplies and installs eligible Thermann hot water systems throughout Brisbane, the Gold Coast and eligible South East Queensland service areas.

Installation requirements vary by technology. Electric storage requires suitable plumbing and electrical supply, continuous-flow gas needs appropriate gas-pipe capacity, heat pumps require airflow and condensate drainage, and solar installations have additional roof and collector requirements.

Where the correct Thermann system cannot be confidently selected online, JR can provide an onsite or written quote before the final product is chosen.

Thermann Hot Water System FAQs