Gas Hot Water
Specialists Christchurch

We take care of the entire process in less than a day, the gas fitter, plumber, electrician and certification. Book a free quote today.

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chris wood
chris wood
From my 1st enquiry to install of heat pump water heating system, Tim and his team were great to deal with. Good communication throughout & install completed on the day agreed. Loving the shower now. Thanks Tim.
Nipuna Warnakulasuriya
Nipuna Warnakulasuriya
What an amazing service. We were struggling 4 days without hot water when I contacted these guys. They were fully booked out but I've told them I have 2 kids at home and I was struggling and they some how manged to get the job done for me with in 24h I contacted them. Tim (i think hes the manager or the owner) was my contact , such an amazing person. Definitely recommend these guys. Look no further if you need any hot water fixes. They are the best 🙂
Diane Park
Diane Park
The guys at Hot Water Shop changed my leaking low pressure hot water cylinder to a mains hot water cylinder. They were fantastic to deal with. Free quote, turned up on time and house was left clean and tidy with a new mains hot water cylinder. Very easy to deal with. Highly recommend.
Grant Hay
Grant Hay
Installation of new mains pressure HWC outside. Good price, good workmanship. Friendly and obliging. Happy to come back and tweak the system (temperature and pressure) after installation. Very happy with outcome.
Caleb Orotaunga
Caleb Orotaunga
Quick and Easy. Called Hot Water Shop for my hot water cylinder to be replaced and it was all done in one day. Fast service especially when our cylinder was leaking.
Channelle Carnie
Channelle Carnie
Great team - they removed the existing hot water cylinder and replaced it, connected us to mains, and also replaced the shower mixer for us. Everyone I dealt with was great, and I'd highly recommend them for their reasonable prices and good service.
James Mumby-Croft
James Mumby-Croft
From start to finish I could not be more happy with my experience with Hot Water Shop. While the pricing was really competitive, it was the fact the whole team were super friendly, professional and helpful, that made them really good to deal with. If you need a plumber, I cant recommend them highly enough, they did a really good job.
Scarlet Rae
Scarlet Rae
Sean, Patrick & Greg as a team are amazing, they install our gas hot water, explained everything they did. They kept everything tidy, and had amazing customer service skills. Highly recommend them to anyone looking for gas installation!

Every job is project-managed

Our products come with a warranty, and our workmanship is guaranteed.

Our range of systems is some of the best performers in New Zealand conditions, and best of all, this type of conversion can usually be done in less than a day! You also won’t need a building consent, as gasfitters are self-certifying. Easy!


All the gas work without the guesswork

A fixed price and guaranteed workmanship.

Instant Heat

Hot water as soon as you turn on the tap!


The califont cylinder takes up less room than a traditional one.

No waste

You only get as much instant hot water as you need, so no more waste.

Save Electricity

Save money on your monthly power bill by switching to gas.

Pressure Delivery

No need for a weak shower when your gas cylinder is attached to mains delivery.

Family Homes

Gas hot water installation is ideal for family homes of three or more people.

gas system

Is your gas hot water misbehaving? To get your hot water back to work, our gas hot water repairs team is the one to call. We’ve got a lot of experience with gas hot water repairs and related repair work to assess the damage and find the most appropriate solution.

For new gas water systems, we have a gas hot water installation crew with tonnes of knowledge and expertise to promptly sort out your water solutions. For califont and controller-operated gas hot water installation services, we’ve got you covered.

For reliable gas hot water replacements, the Hot Water Shop team can find the best replacement model to get your hot water back up and running. If you need gas hot water replacements right now, contact us to see how we can help.


Why choose us?

100% Satisfaction Guarantee

If you aren’t satisfied with the job, we’ll come back and rectify the issue at no extra cost.

Money Back Guarantee

Buy any product or installation package online, and we’ll give you a three-day Money Back Guarantee, no questions asked.

Component and Service Guarantee

Our work is completed by Master Plumbers, and we stock reputable brands with quality warranty programs.

Fixed Price Quotes

Remove any concerns of a budget blowout once the job starts with our fixedprice installation packages.


For all your gas hot water needs, contact us today!

When you buy a Rheem gas water heater, quality and efficiency are guaranteed. A Rheem continuous flow gas water heater is built to last, providing you with luxurious hot water on tap for years to come. Rheem products are trusted all over the world. Here are three great models to choose from.

Boasting precision engineering from Japan, Rinnai gas instantaneous hot water systems are affordable and compact, with superb functionality. A Rinnai gas water heating is a breeze to maintain, offering money-saving energy efficiency combined with the convenience and flexibility of installation. Here are three popular Rinnai models to choose from.

A controller is not essential for Gas, but it is worth considering if you want the benefits of complete temperature control and added features, like having it run you a bath and telling you when it is ready! You use your gas hot water unit more efficiently as less gas is required to heat water to 40 °C (typical shower temperature) than at 55 °C (default temperature without controllers). Plus, there is added peace of mind if you have young children in the house; you can pre-set the temperature to a child-safe level for the period while you are filling the bath.

More Benefits

A mains pressure gas califont will greatly improve the flow of hot water through your pipes. Plus, you can enjoy highpressure hot showers without the worry of running out of hot water. Gas hot water heating systems are also a smart choice for the environmentally conscious.


Frequently Asked Questions

Our gasheated hot water cylinders are different from regular hot water cylinders as they don’t actually require a large cylinder or a cylinder-shaped anything – for that matter. Traditional hot water tanks are large and stored away someplace in your home, usually in a cupboard or kitchen space, gradually heating water for you to use. Gas water heating tanks are differentiated by their main heating power source being gas, as opposed to electricity or solar, and their tanks are usually more compact and rectangular in shape. Gas hot water cylinders (or califont tanks) are popular for large households due to their capability to generate large quantities of hot water quickly and efficiently.

This means that your property can get more reliable hot water for multiple showers, baths, and general day-to-day use for any size household. Being a smaller heating unit, these gas hot water cylinders are easier on the eye and even can be installed externally, so you never have to see them at all, and they don’t have to compete for storage space inside your home. Gas hot water cylinders installation often cost less to run than traditional electric cylinders, so are a popular choice for modern households in New Zealand.

When you want hot water for a shower or washing up, you turn on the applicable tap. Cold water is then fed into the smaller style gas cylinder by pipes where a gas element immediately heats the water that runs through it, sending that new hot water straight to the tap or shower that is requesting it. It is an on-demand system, meaning that there is no hot water sitting in a tank waiting idly to be used, gas hot water is made instantly depending on the demand and can cope with large quantities when required. This can save on bills as your gas system won’t be continuously making hot water when it’s not needed and not being used.

Gas hot water cylinders and systems have come a long way from where they started. You can now have a control panel installed in your home. These panels are suitable to control your gasheated hot water, adding a bit of smart luxury to your hot water experience. Different models of panels come with different features, including filling a bath at a set temperature (and the panel will even tell you when it’s ready!) This smart temperature setting is a safe way to always control your water without having to manually mix hot and cold temperatures from the taps. The setting of safe temperatures is house-wide, so there will be no more worries about you or your little ones scalding yourselves during bath or shower time!

There are many benefits to switching over to a gas-powered hot water system. There are no varying rates of gas during the day, unlike electricity, so no matter when you use it, it costs the same amount and doesn’t spike and give your bills a shock. The water is heated fast, so you don’t have to wait for your showers to warm up for ages which ultimately equals lots of wasted cold water poured down the drain.

There are many benefits to switching over to a gas-powered hot water system. There are no varying rates of gas during the day, unlike electricity, so no matter when you use it, it costs the same amount and doesn’t spike and give your bills a shock. The water is heated fast, so you don’t have to wait for your showers to warm up for ages which ultimately equals lots of wasted cold water poured down the drain.

Regular maintenance of a gas water system is crucial to ensure that it operates efficiently and safely. Neglecting maintenance can lead to reduced performance, increased energy consumption, and potentially pose a hazardous environment, such as gas leaks or carbon monoxide buildup. Regular maintenance helps to identify and address issues before they become more serious problems.

Maintenance tasks should be performed regularly to keep the cylinder in good condition. Firstly, the pressure relief valve should be checked regularly to ensure it functions correctly and safely. The cylinder should also be inspected for any signs of damage, such as rust or corrosion, which can compromise its integrity and safety.


In addition, it’s essential to ensure proper ventilation around the cylinder to prevent the buildup of hazardous gases such as carbon monoxide. This may involve installing ventilation fans or ensuring that windows and doors are kept open while the cylinder is in use. It’s also essential to have a carbon monoxide detector installed near the cylinder and to test it regularly to ensure it functions correctly.


For all your hot water cylinder needs, contact us today!

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