Starting in 2012, it is no doubt that Thermann has become one of the fastest-growing hot water brands in both Australia and New Zealand. Thermann has identified only the best hot water technologies and has designed a range of systems that continue to be trailblazers in the hot water market. This makes Thermann water heaters the #1 choice for more and more plumbers across New Zealand.

Thermann stays true to its passion and mission to provide only the best quality of products with its continuous flow hot water systems, helping households and establishments all around.

Why Thermann Could Be For You

Continuous flow hot water systems utilize the flow of water, providing a continuous stream at the temperature you desire, without having the extra baggage of storage! One great advantage of this type of hot water system is that it only utilizes energy when you need heat, making it immensely efficient and can help you with cutting costs, especially during the cold season. Thermann’s latest range of continuous flow units is the perfect option and addition to New Zealand homes, catering to your personal needs.

As Thermann’s gas continuous flow water heaters heat the water only as you need, it becomes more environmentally friendly, reducing energy usage. This also helps you save more on your electricity bills. This characteristic and its usage technology gives it a 6-star energy rating, making Thermann’s gas continuous flow water heaters one of the most energy-efficient and affordable instant hot water systems on the market.

Aside from being energy-efficient, continuous flow water heaters also occupy less space because there is no need to accompany it with hot water storage units, which are the ones used traditionally. Its compact design allows it to be mounted on your wall, saving space with a small footprint. It can also act as a standalone system or can be used with other types of renewable technology.

Temperature controllers can also be installed to these units to accurately deliver required water temperatures to your faucets.

When you choose Thermann, you will be enjoying plenty of benefits such as:

• Space saver – as it can be mounted on your wall with a small footprint only.
• Heat water only as needed, so you will never run out of water.
• Help cut energy costs by heating water only as needed.
• Controllers may be installed to achieve the accurate water temperature you need ( which also helps children and elderly users).
• Available in NG or LPG.
• It comes in a variety of capacities.

Like with all continuous flow hot water systems, in some instances you need to be aware that:

• There may be a need to upgrade your gas pipe, which may add up to your upfront costs.
• A small amount of water ( approx. 1-2 liters) is wasted upon initial delivery.
• You may notice a reduction in mains pressure when when high volumes of water are used.

These are things that you must consider when choosing which of the Thermann continuous flow hot water system units you chose. Not sure? Ask us for advice!

Some factors that will play a role in what size unit you need.

How Many Bathrooms Does You Have at Home?

When turning on the hot water tap, Thermann’s continuous flow gas hot water system is immediately put into action to supply hot water. However, heavy usage can occur in your home and Thermann acknowledges that. These moments arise during the mornings, when everybody is scrambling to take a shower, hence using more than 1 at a time. This can also happen when you have guests over. When choosing a continuous flow gas hot water, it is important to keep in mind your household and select the correct size.

More bathrooms will require you to purchase and install a larger system that can deliver more, an example of this will be the Thermann 6 Star Continuous Flow at 26 ( twenty-six) Liters.

Which Thermann Continuous Flow Gas Hot Water System Is the One for You?

With homes having 1 or 2 bathrooms only, the  Thermann 6 Star Continuous Flow at 16 liters or at 20 liters is suitable but you can always get a larger model to have more capacity in future, checking the price differnce is sometimes worth it. If you have 2-3 bathrooms in your household, a larger continuous flow hot water system will come in handy, such as the Thermann 6 Star Continuous Flow at 26 Liters.

Homes with home spas or bathtubs are recommended to purchase the Thermann 6 Star Continuous Flow at 26 liters or Thermann C7 Continuous Flow, which is available at 26 liters (higher demand). These units can cater to the biggest amount of water for your needs.

Installing your unit closer to the hot water tap/outlet to be used will be efficient in transporting the heated water to the fixture you are using, limiting the time it needs to travel from the source.

Other Accessories Needed

Installing Thermann Continuous Flow Hot Water Systems in enclosures will help protect the unit. Universal Continuous Flow Controllers are also available to control the temperature of the water to what you want.

Please speak to your Gasfitter or Hot Water Cylinders NZ about fluing options. 

Thermann 26L Continuous Flow LPG Water Heater

This unit from Thermann is the Thermann 26L Continuous Flow LPG Water Heater. Like many of the units from Thermann, it is compact; thus, saves space and is quite easy to install. It delivers 26 L/min at 25°C rise and 16.25 L/min at 40°C rise. The energy rating in unit with 50°C is at 6.1, while those at 60°C is at 6.0, making these units extremely energy efficient. This unit is capable of servicing 2-3 (two to three) bathrooms in a household. It is also available for Natural Gas users.

Here Are the Thermann 26L Continuous Flow LPG Water Heater Features:

• Continuous flow technology
• Compact and efficient design
• 6 ( six) star energy rating
• Providing New Zealand homes with a superior technology straight from Nortiz, Japan’s leading manufacturer of household water heaters
• Never run out of water
• Made in Japan
• Electronic ignition means no standby pilot light
• Also available in 16 ( sixteen) liter and 20 ( twenty) liter units.
• Also available in Natural fuel type
• It can be purchased with a temperature setting of 50°C and 60°C.
• This unit is suitable for 1-3 ( one to three) bathrooms.
• Installation is external.
• Delivers 26 L/min at 25°C rise
• 50 (fifty) deg C temperature setting.
• 200 (two hundred) MJ/h gas consumption.
• The number of people is at 4-6 (four to six).
• Warranty protected

The Thermann 26L Continuous Flow LPG Water Heater comes with a 12-year warranty on the heat exchanger, and a 3-year warranty on full parts and labor.

Other Thermann Products

A universal continuous flow controller is also available. This product helps with the control of water temperature and pressure that can serve your needs.

The Thermann C7 high-efficiency Gas Continuous Flow unit ensures reduced wasted energy by pre-heating the water using heat from the gas exhaust using less energy. Optional universal controllers ensure you always have precise control of your hot water temperature settings. The unit is available as a 26L model in both NG and LPG to suit your gas type.

Thermann also produces hot water cylinder tanks for homes of all sizes that deliver full mains pressure. These are called the Thermann Electric Hot Water Cylinders. These require low maintenance and have a long service life, full flow pressure to all outlets, can be installed both outdoors and indoors, and the steel tank features rock-hard Duro-namel vitreous enamel to maximize tank life and durability. Models that cater 25L and 50L feature dual handed v-fit plumbing connections for easier access.

Thermann hot water units are state-of-the-art and are developed across the world. There is an assurance of precision and quality in all Thermann products. Thermann sets the new standards for hot water systems in Australia and New Zealand, with the aim to provide the ultimate hot water experience. Thermann provides hot water for every household, no matter the size.

Bosch is undoubtedly one of the leading brands of water heaters in the market today and boasts excellent energy efficiency ratings. This enables Bosch water heaters to provide significant savings on running costs daily and preserves the environment too.

In the past, most New Zealand homes have chosen storage tanks as their hot water system. Today, Bosch is changing the way households use hot water – offering the widest range of continuous flow hot water systems.

Why Choose Bosch?

The recent influx of continuous flow hot water systems provides an efficient and cost-effective alternative to traditional gas and electric storage units. If you’re building a new home, renovating, or merely replacing your existing hot water system, Bosch is the right brand for the job. When it comes to hot water systems, Bosch offers a gas continuous flow water heater to suit your every need.

Bosch continuous flow systems only heat enough water for your every need, so you’ll never run out of hot water. Your entire household can shower at the same time and enjoy hot water instead of enduring a cold shower!

Continuous flow hot water systems occupy less space as compared with traditional storage hot water units. They can easily be mounted outside or, if you want, you can conveniently install internal systems in a cupboard (flueing required).

Electronic continuous flow systems can also provide you with a precise temperature adjustment feature using a temperature controller.

Here are the advantages you will enjoy when you choose to install a Bosch continuous flow hot water system:

• Heat water only as required
• Never run out of hot water
• Save money on energy costs
• Space-saving, compact design
• Precise temperature control* giving parents added peace of mind for their children’s safety
• Extensive range of accessories to add to the appearance of your home

Here are the disadvantages of installing a Bosch continuous flow hot water system:

• There is some delay before the water is sufficiently heated to the right temperature
• More water is wasted
• It is not suitable for households with high hot water needs

Here are a few things to consider when choosing the right hot water system for your home:

How many bathrooms does your home have?

Bosch continuous flow gas hot water systems provide hot water at the turn of a tap. However, we recognise that there are times where heavy usage occurs. For example, in busy morning times, there may be more than one shower operating at the same time. It is important to select a hot water unit with a capacity to suit your household’s needs.

A two- or three-bathroom home will require a larger system, such as a Bosch 26e.

What type of Bosch Hot Water unit is right for you?

If your home has one bathroom, a Bosch 17e or 21e may be suitable. For 2-3-bathroom homes in colder climates, Bosch recommend a larger hot water system, such as a 26e.

Is there a spa bath* or large bath installed in the home?

Bosch recommends the 26e or 32 litre unit be installed in homes with a spa bath* or large bath in order to manage the larger volume of hot water required to fill the baths.

What is the distance to the bathroom and other hot water outlets in the home?

It is most efficient to have the hot water system installed in a location closer to the outlets used most frequently such as the shower or kitchen. This helps to reduce the time it takes for the hot water to reach the outlets.

Other Accessories

When installing an Electronic Highflow system in your new home, accessories to consider include a fully enclosed recess box or a pipe cover.

Bosch Electronic Highflow 26e

The Bosch Electronic Highflow 26e unit is compact, space-saving and easy to install. It delivers 26 L/min at a 25°C rise, has a 5.53 energy efficiency rating, is suitable for 2-3-bathroom homes and is available in Natural or LP Gas.

Here are the unit’s features:

• 53-star energy efficiency
• Continuous flow technology
• Delivers 26 L/min at a 25°C temperature rise
• Compact design
• Install up to 4 optional temperature controllers
• Suitable for 2-3-bathroom homes
• 55°C model standard
• Anti-frost included on all models
• External installation only
• Solar compatible without the need for a solar transfer valve
• Available in Natural or LP Gas
• Comprehensive warranties

The unit comes with a Domestic Warranty with 3 Years of Parts and Labour and 10 Years of Heat Exchanger (part only).

Bosch Electronic Highflow 21e

The Bosch Electronic Highflow 21e Continuous Flow Hot Water Heater is compact, space-saving and easy to install. It delivers 21 L/min at a 25°C rise, has a 5.56 energy efficiency rating, is suitable for 1-2-bathroom homes and is available in Natural or LP Gas.

Here are the unit’s features:

• 56-star energy efficiency
• Continuous flow technology
• Delivers 21 L/min at a 25°C temperature rise
• Compact design
• Install up to 4 optional temperature controllers
• Suitable for 1-2-bathroom homes
• 55°C model standard
• Antifrost included with all models
• External installation only
• Solar compatible without the need for a solar transfer valve
• Available in Natural or LP Gas
• Comprehensive warranties

The unit comes with a Domestic Warranty with 3 Years of Parts and Labour and 10 Years of Heat Exchanger (part only).

Bosch Electronic Highflow Features

Bosch Electronic Highflow units are compact, space-saving and easy to install. This range is specifically designed for maximum energy efficiency and environmental protection, providing a minimum of 5.5+ star performance rating.

With a Bosch Highflow you are assured continuous hot water, while saving money and caring for the environment. Highflow systems are available in 17, 21 and 26 litre per minute flow rates and are available in Natural or LP gas.

Other Bosch Electronic Highflow Features and Benefits:

• No need to mix hot and cold water. Simply select the temperature you desire and turn on the hot water tap.
• Main controller can be set to the maximum temperature of the unit.
• Bathroom controller and Sub controller have a maximum temperature of 50°C for safety.
• Volume setting – user can specify the output of water in litres.
• Assistance Call button allows the user to signal other household members via an audible alarm.
• Water Saver / Bath Fill function – an audible alarm will sound, and water flow will stop when the predefined volume is reached.
• Bosch controllers come with a comprehensive 3 years parts and labour warranty.

For generations, Bosch has been dedicated to providing quality products that protect the environment and conserve resources. We’ve got your every need in our minds as we design our products. We only want the best for you, our customers, so you can rest easy in the assurance that we deliver the best quality products to cater to your needs.

 

Rheem is considered to be one of the most trusted names in New Zealand when it comes to water heaters.  Even in the early days, they have provided the latest in water heating technology and have thus branched out to other products, as well as catering to both the residential and commercial markets.  For the home, Rheem has introduced several products, such as the Gas Continuous Flow Water Heater, the Indoor Gas Storage, and lastly the outdoor gas storage.

Outdoor Gas Storage

For the Outdoor Gas Storage, the Rheem Stellar is now considered to be the most efficient gas storage water heater available in New Zealand. In fact, it is even known as the “king” of gas water heaters designed for outdoor installation.

It boasts of a high flow rate ability delivering up to 40 litres of water per minute that is why this makes it ideal  for homes with numerous bathrooms, high delivery tap ware, massage showers, and homes with high hot water consumption.  Another reason why this product is considered as one of the best is that has no electrical connections therefore making it still work in cases when power breaks down. Also, what is reassuring to the client is that it has a 10-year warranty.

Two Model Types of the Rheem Stellar Gas Water Heater:

Both Rheem Stellar models are available in natural gas only and also for outdoor installation. Because of its mains pressure, it can power many taps at one time. The Stellar 850330NAZ has a 130L capacity and has a superior 200L per hour hot water recovery while the Stellar 850360NAZ has a 160L capacity and a 175L per hour hot water recovery. Not only does the Stellar have finer qualities, it also has a modern styling that blends well with the external home environment. Both have the Stellar SuperFlue which increases efficiency and performance.
Pros and Cons of a Rheem Stellar

Pros of Rheem Stellar:

• A gas water heater has faster heating compared to electric models. An electric heater takes at least an hour to heat up 25 gallons of water whereas a gas heater can heat up a 50-gallon tank. This is important if you have a large family because of the high demands for hot water.
• Another advantage of using a gas water heater is that it has potentially lower cost. Although electric heaters are more energy efficient compared to gas heaters but gas heaters make up the cost by having electricity cost more than a natural gas in some places.
• Gas heaters can still work even if there’s a blackout. Since gas heaters do not have any electric connections, this make them work even in cases of power outages.
• The Rheem Stellar is specifically designed as a direct replacement if you have a Vulcan Freeloader.
• Another important thing to note if you are using or going to use the Rheem Stellar is that, you do not have to have space indoors since this is for outdoor use.
• It is also for mains or high pressure.
• If you are using a big overhead shower or a rain-head the Rheem Stellar can still deliver enough water for you.
• For a large family, having multiple bathrooms is a must so using this product is essential since it delivers at least 40 litres of water per minute.
Cons of Rheem Stellar:


• Gas water heaters can cost a bit higher as compared to an electric heater upfront and in its maintenance and installation but in the long run, you can then make up for your expenses.
• This has a shorter life span compared to an electric water heater. Electric water heaters can last up to 13-14 years compared to a gas water heater which can only last up to 13 years.
• It has a more difficult installation process because it includes a ventilation system. If your home has no gas line or has no previous gas heater, pipes or a gas line may need to be installed.
• If there is only the two of you in the household then using the Rheem Stellar may not be the best option for you. A lot of energy is used to heat up large amount of water and your consumption is low therefore it would not be advisable to have this installed in your home.
• It is started or controlled by a pilot light which means if this goes out, you may have issues turning on your water heater.
• The Rheem Stellar is designed for large consumption of hot water; it could take up a lot of outdoor space. This could be a problem if this is located in an access way or something similar.
• Rheem Stellars can take up high amount of gas consumption. If your area has a high cost for natural gases then this could be an issue for you.
• If the whole family shower at the same time, the Rheem Stellar may not be able to answer to the demand since it does not supply endless amount of hot water.
• If you are out to work or on a holiday, the Rheem Stellar could still be consuming gas.
• Lastly, this is not available for use in LPG.
You must take into consideration that at least a quarter of your energy costs goes to heating that is why, you have to make sure that you are making the right decision when choosing the best water heater for your family. Operational expenses are not the only factor that you have to consider, you must consider also the upfront cost and the maintenance cost as well.
Rheem Stellar Stainless Steel Electric Water Heater


There are now two available Rheem Stellar models, which is the gas and then introducing the electric water heater. The stainless steel water heater is at least 40% lighter compared to the vitreous enamel which makes it easier for plumbers to handle, transport and then do the installation. It is also aesthetically pleasing being it is in a modern design as well as offering durability. The key features of the Rheem Stellar Electric are:
• It has superior energy efficiency which gives it a lower energy cost compared to other conventional electric water heaters.
• It has a better performance of 12-24% against the Minimum Energy Performance Standards (MEPS).
• Available in a wide range of sizes such as: 80L, 125L, 160L, 250L and 315L
• If you are located in an area where there are economical off peak tariffs then the 160L model and up is the one suitable for you.
• Long term maintenance costs and services are reduced since the Rheem Stellar electric heater does not require a sacrificial anode for protection.
• It has a 75°C maximum thermostat setting which is higher compared to other products.
• This product also has a 10-year cylinder warranty
Rheem Stellar Gas 330 Stainless Steel

• It has a reduced energy costs with 5 Star energy efficiency rating.
• Its hot water capacity is up to 390L in the first hour.
• The Rheem Stellar has better recovery when hot water is needed since it has 185L of mains pressure of hot water recovery every hour and an additional 50L additional recovery through the inbuilt user-adjustable mixing valve.
• Because of its mains pressure the Rheem Stellar Gas can accommodate the needs of a large family.
• Just like the Rheem Stellar Electric, maintenance and services are reduces since it does not need a sacrificial anode for protection.
• It also has a 10-year cylinder warranty.
• Replacing a Vulcan Freeloader:
• If you have an existing Vulcan freeloader and its causing you trouble and needs replacing you will be pleased to hear that by replacing it with a Rheem Stellar, you are practically replacing it “like for like”. Only a small modification needs to made to the gas pipework (more from one side to other) which is straight forward. Other than that, the location and all plumbing can be reused to install the Rheem Stellar.
• Checkout our Vulcan to Rheem Stellar replacement special here.

Get a free Rheem Stellar Quote. We always recommend contacting a professional when you plan to upgrade or replace your water heater system.