GAS HOT WATER SYSTEMS
ABOUT GAS HOT WATER
Gas hot water systems burn gas to heat water which generates far fewer greenhouse gases than using electricity from the grid. Gas systems can come in either a gas storage water heater, or a continuous flow/instantaneous water heater.
Gas storage hot water systems will usually have a continuously burning pilot flame which ignites a burner to heat the water in the tank when it is required. Usually the unit will have a thermostat which tells the system to heat the water in the tank if it drops below a specified temperature.
A continuous flow or instantaneous gas hot water system doesn’t have a storage tank as it simply heats the water via a gas burner which is activated when a hot water tap is turned on in the house. It only heats the amount of water that is required instead of continuously heating a full tank which means they can have large energy and cost savings. More importantly, what this means for the consumer is that with a continuous flow system you will never run out of hot water.
For a detailed explanation on how all types of gas hot water systems work see here: https://www.yourhome.gov.au/energy/hot-water-service
Get in touch for a free quote
PROS AND CONS
PROS
- Between 5-6 star energy efficient
- High system warranties
- Low maintenance
- Generally lower purchase cost
- Available in LPG or natural gas
- Optional temperature control (continuous flow only)
- Continuous, never-ending hot water (continuous flow only)
- Slim line and wall mounted (continuous flow only)
- Hot water during a power outage (gas storage only)
CONS
- Mid-range usage costs
- Strict install requirements
- Lower water pressure in colder temperatures (continuous flow only)
- Reliant on electric ignition (continuous flow only)
- Don’t work well with water saving shower heads (continuous flow only)
- Require a constant pilot light which can be blown out (gas storage only)
OUR RECOMMENDATIONS
If you’re looking at upgrading your current gas system or connecting for the first time, we recommend installing gas continuous flow. With higher system warranties, 6 star+ energy rating & optional temperature control, this style system can suit the largest or smallest of families, only heating the water that you use.
Love a long shower? Never do you have to worry about running out or fluctuations in temperature as the water is heated as it flows through the system.
Temperature control provides safety & comfort to those with young kids and also saves on water & gas usage. Set your controller anywhere from 37 up to 50 degrees without the need of turning on a cold tap.
CHECK OUT OUR LATEST GAS HOT WATER DEALS
Not connected to gas? Connect through us and receive over $750* in rebates off of the supply and install of new Rinnai Infinity 16 gas continuous flow hot water system thanks to Australian Gas Networks!!*
Already have a gas system that isn’t working like it used to? Get a new Rinnai Infinity 16 from $1,245 supplied and installed inc GST.
Terms & Conditions
Only available in the greater Adelaide area subject to availability. Offers valid until 30th November 2025 unless Scheme or offer is changed prior.
*Available to existing households replacing a continuous flow gas hot water system. Installation cost excludes external weatherproof power point & subject to onsite inspection. ^Visit rinnai.com.au for full warranty terms and conditions.
All installation quotes are subject to site inspection. Customers must contact HOT WATER COM AU to find out if they are eligible for the offer based on their property’s existing set-up. Rebates vary based on the property’s energy connection status, location (based on climate zones) and model of the new system being installed. Other tank sizes, fuel types and brands are available upon request. Offer only available on supply and installation of the system by HOT WATER COM AU or their accredited representative; all REPS credits created under these offers must be assigned to MAC Trade Service’s (MACTS) obliged Energy Retailer partner.
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INTERESTED IN A GAS HOT WATER SYSTEM?
Get in touch with our expert sales team for a free, no-obligation quote. Still unsure? Give us a call with any questions you may have and our team will get you into the best suited system for you and your home.
Interest free payment plans available on all new installations
LATEST REVIEWS
Very happy we chose Hotwater.com.au to install our hot water unit. Professional, honest and friendly team doing a great job. Special thanks to Mark, the gas fitter plumber .
Response from the owner:Thank you Anna for your lovely review, that's wonderful to hear! 😊 Have a great rest of the week!
Thank you to the team at Hotwater.com.au
Replaced our old solar hotwater service with a reclaim heat pump. What can I say but Wow!!
The service from the start was brilliant and the heat pump beats the solar hot water system hands down. No more boosting on cloudy days at night as the Solar panels on a cloudy/rainy day produce more than enough energy to keep the water hot. My power bill has gone down.
Again a big thank you to the team at Hotwater.com.au
Replaced our old solar hotwater service with a reclaim heat pump. What can I say but Wow!!
The service from the start was brilliant and the heat pump beats the solar hot water system hands down. No more boosting on cloudy days at night as the Solar panels on a cloudy/rainy day produce more than enough energy to keep the water hot. My power bill has gone down.
Again a big thank you to the team at Hotwater.com.au
Response from the owner:Thank you so much Paul , amazing to hear 😊 we really appreciate you leaving us such a lovely review. Have a wonderful rest of the week
Unbelievable fast service. From gas Hot water tank to heat pump electric hot water within 6 hours of my phone call.
These guys are fast and do everything, electrical, plumbing etc.
Highly recommend.
These guys are fast and do everything, electrical, plumbing etc.
Highly recommend.
Response from the owner:Thank you Brad for the glowing review, it was our pleasure! 😊 we hope you have a lovely long weekend!
Very happy with the installation of my solar hot water system
The lads did an amazing job working efficiently and thoroughly
The lads did an amazing job working efficiently and thoroughly
Response from the owner:Thank you so much Rebecca for leaving us a glowing review, we really appreciate it 😊 have a great rest of the week!
Fast and friendly service. No mucking around. Quick and easy to deal with.
Response from the owner:Thank you so much, it was our pleasure to help! 😊
Thank you Patrick & Sam.
Patrick and Sam did an absolutely fantastic job replacing my old hot water system with a brand-new one. From start to finish, they were professional, efficient, and incredibly knowledgeable. They arrived on time, explained everything clearly, and worked diligently to ensure the installation was done to the highest standard.
Not only did they complete the job quickly, but they also left everything clean and tidy, which I really appreciated. Their friendly attitude and attention to detail made the whole process smooth and stress-free.
If you’re looking for reliable and skilled professionals, I highly recommend Patrick and Sam. Thanks again for the excellent work!
Cheers, Greg
Patrick and Sam did an absolutely fantastic job replacing my old hot water system with a brand-new one. From start to finish, they were professional, efficient, and incredibly knowledgeable. They arrived on time, explained everything clearly, and worked diligently to ensure the installation was done to the highest standard.
Not only did they complete the job quickly, but they also left everything clean and tidy, which I really appreciated. Their friendly attitude and attention to detail made the whole process smooth and stress-free.
If you’re looking for reliable and skilled professionals, I highly recommend Patrick and Sam. Thanks again for the excellent work!
Cheers, Greg
Response from the owner:Thank you so much for your wonderful feedback! We’re thrilled to hear and it’s great to know that they made the process smooth and stress-free. I’ll be sure to pass along your kind words to them.
Your recommendation means a lot to us, and we really appreciate you taking the time to share! 😊
GMH Hotwater were very prompt and efficient in replacing our old gas hot water heater with a new heat pump. The installers did a great job.
Response from the owner:Thank you so much Peter, that's wonderful to hear! I'll be sure to pass this onto the team. Have a great rest of the week 😊
Just had the easiest and most efficient HWS changeover. Cold shower one day and hot shower the next. And with good advice to suit my situation with the relative rebates. Installation gang were also friendly and professional.
Response from the owner:Thank you so much Lee, that's wonderful to hear! I'll be sure to let the team know, they'll be thrilled 😊
Good price, great service. Got an Aquatech Rapid 6X installed. It was required urgently and the trades who came were considerate , polite and efficient...great lads.
Response from the owner:Thank you for your kind review! We’re so glad to hear that you’re happy with our service. If you ever need anything in the future, don’t hesitate to reach out!
We have had a heat pump water heater installed today. The quote (initial recommendation via Solar Quotes website) was provided promptly, as well as further answers to questions, including options and prices. The installation was done professionally, thanks to Cory and Braeden, and the unit is working fine. No reservations in dealing with Hotwater.com.au at all.
Response from the owner:Hi Roger, we truly appreciate your five-star review! We'll pass on your kind words to Corey and Braeden :)
Great service and good price. I couldn't fault the team from start to finish. Very minor issue with a small scratch on the timer cover - which the manufacturer or supplier should really have rectified. Hence why 1 less star.
Response from the owner:Thank you for your kind words! We truly appreciate your understanding regarding the scratch on the timer cover, and I've passed on this feedback along to the manufacturer to help improve quality control. Have a wonderful week!
Rapid response to replace my faulty instant gas hot water heater. Friendly and trustworthy staff. Very pleased with service.
Response from the owner:We appreciate your support and are thrilled to know you’re happy with your hot water system! Have a lovely rest of your week
Update to my previous review .. GREAT AFTER SALES SUPPORT from Sam and the company for the installation that I had done .... Initially I had a problem with freeze issues on a rinnai solar heater panel. It failed on a friday and this company was very supportive and able to replace defective units under warranty by the following tuesday. Awesome support and customer detail. Thank you .. up here in littlehampton during winter not having access to a hot shower is like medieval torture .... HOT WATER BLISS AGAIN :)
Response from the owner:Hi Adam, we're so glad we could help out and really appreciate you taking the time to leave a review
Excellent service. Right from the initial online enquiry, which prompted an immediate phone response, the consultant listened to our needs and a new system was installed the next day, super quick and very professional throughout. Highly recommend.
Colin Mason
Colin Mason
Response from the owner:Thanks for your amazing review! It was a pleasure helping you with your hot water system. If you ever need us again, we’re just a call away!
Fast quote, fair price, excellent value and they happily answered my sometimes annoying questions. Everything was included in the quote, and the workmanship was outstanding. They even came in under the quote as the remote couldn't be installed.
Absolutely will use again, and highly recommend for all.
Absolutely will use again, and highly recommend for all.
Response from the owner:Thank you for the wonderful review! We truly appreciate your kind words and are so glad we could help. Enjoy your hot water!
Recently installed Rinnai infinity 16 gas continuous system from HOTWATER.com.au, got the competitive quote within few hours and done the quality job very quick whole process was pretty fast. Thanking to trustworthy company and all team, definitely highly recommend this company and their services.
Response from the owner:Hi Dinesh, thank you for taking the time to leave such a positive review! We’re so happy you’re satisfied with our service and look forward to helping you again.
Response from the owner:Thanks for taking the time to leave a review Khoa, have a great week! :)
This company is the best, most caring plumbing company that we have ever done business with. They are punctual, top tradespeople and they do a brilliant job, the company couldn't do enough for us this all starts with there office staff. We definitely recommend them re there exceptional high quality workmanship. Thankyou "hot water.com.au" Bob Tuddenham
Response from the owner:WOW thank you so much for your kind words! We truly appreciate you taking the time to leave us such a glowing review, and I'll be sure to pass this onto the whole team. If you ever need anything in the future, please don't hesitate to reach out. Thank you again Bob and Sue, it was our pleasure 🥰
Great service very professional company to deal with, excellent heat pump, will recommend to anyone
Response from the owner:Thank you so much Roy 😊 that's wonderful to hear! Have an awesome week
Hotwater.com.au installed an iStore 270 Litre hot water heater today. The water heater installers and the electrician were superb.
Efficient, extremely tidy, courteous - and explained the operation of the new Water Heater clearly and in fine detail. We are very pleased.
Efficient, extremely tidy, courteous - and explained the operation of the new Water Heater clearly and in fine detail. We are very pleased.
Response from the owner:Thank you for the wonderful review! It was our absolute pleasure 😊
My off-grid property in the Adelaide Hills recently installed the IStore 270L Heat Pump hot water system installed by Hotwater.com.au.
They were professional throughout the whole process.
Very very competitive on price (half of our local plumber), quote to install was very fast, and quality job on install.
We would definitely recommend their services.
They were professional throughout the whole process.
Very very competitive on price (half of our local plumber), quote to install was very fast, and quality job on install.
We would definitely recommend their services.
Response from the owner:Thank you so much for the glowing review! We’re thrilled to hear and I'll be sure to pass this onto the team 😊
There service was prompt and honest in pricing.
Excellent, highly recommended.
Excellent, highly recommended.
Response from the owner:Thank you so much, that's wonderful to hear! 😊 we hope you have a lovely rest of the week
Professional, quick and efficient very satisfied
Response from the owner:Thank you for taking the time to leave us such a lovely review, it's much appreciated 😊
Fantastic Team, great service, super trades, on time and always ready to assist.
Response from the owner:Thank you so much Garth for leaving us a review! 😊 It means a lot to the team. We hope you have a wonderful rest of the week.
Excellent service at a competitive price. Can recommend and would use them again.
Response from the owner:Thank you so much Robert! 😊 have a great week (and stay cool!)
great team to deal with and there were no hidden costs 👍 👍
Response from the owner:Thank you Bob for leaving us a review! Have a wonderful rest of the week 😊
Needed to replace a leaking hot water service. Got several quotes for heat-pump units. Got best quote quickly from Hotwater.com.au. Had a new unit within 24 hours. Quick response, competitive quote and excellent work.
Response from the owner:Thank you so much Greg for the review, wonderful to hear! We hope you have a wonderful week 😊
Great to do business with, good accurate info over the phone, very quick install service and no hidden suprise costs at the end.
Response from the owner:Thanks Seumas, we really appreciate you leaving us a review, and glad we could help. Have an incredible rest of the week 😊
Had my IStore 270L Heat Pump hot water system installed by Hotwater.com.au recently. They were great throughout the whole process. Very competitive on price, quote to install was very fast, and quality job on install. Definitely recommend their services.
Response from the owner:That's great to hear thank you Glen, so glad we were able to assist 😊 thank you for for leaving us a review! We really appreciate it
Very knowledgeable, efficient, turned up on the right day and price was great. Very happy to recommend.
Response from the owner:Thank you Tony, that's great to hear! 😊 thank you so much for leaving us such a glowing review. Have a wonderful week
Response from the owner:Thank you Richard for leaving us a rating, it's much appreciated 😊
We recently had the Aquatech heat pump
Installed at our hourse. Transparent pricing, easy to deal with, guided us through all the options and government rebates available. Highly recommend!
Thanks for your help :)
Installed at our hourse. Transparent pricing, easy to deal with, guided us through all the options and government rebates available. Highly recommend!
Thanks for your help :)
Response from the owner:Thank you so much Matthew, that's wonderful to hear and it was a pleasure to help. Have a lovely rest of the week 😊
Five stars! I would give more if I could. What could have been a disaster turned out to be a really positive experience. The guys who came to check and replace the water heater were friendly, thoughtful, polite, and went out of their way. Everything was done so quickly efficiently and with a genuine sense of service. Thanks so much.
Response from the owner:Thank you so much Rachel, that's so wonderful to hear 🥰 I'll be sure to pass this onto the team, they'll be thrilled! We hope you have an incredible rest of the week
Top quality service…the staff were friendly, efficient and patient…work was done professionally, in good time and reasonable cost. I can highly recommend hot water co
Response from the owner:Thank you so much David, you're too kind. We appreciate you taking the time to leave us such a lovely review. Have a wonderful weekend 😊
A very good experience. Certainly helped us navigate the newness of heat pump technology and its application to urban dwellings. Well organised, knowledgeable, and clean and tidy work. Would recommend to all
Response from the owner:Thank you so much Karen, that's amazing to hear! We really appreciate you leaving us a review, we hope you have an excellent rest of the week 😊
Installation performed very quickly and professionally. Very happy with the quality of work and final finish.
Response from the owner:Thank you Graham, that's wonderful to hear! We appreciate you taking the time to leave us a review, have a great week ahead 😊
Fantastic service. Natika was helpful and quick to respond. Installers were efficient and very professional. Great customer service both in the office and by installers. Highly recommend going through Hotwater.com.au.
Response from the owner:Hi Shannon, thank you for the kind review and we'll be sure to pass this on to the whole team. Have a great week :)
Happy with the whole process from start to finish.
Response from the owner:Thank you for the lovely review Rick, and excellent to hear you are happy with the new system. All the best!
I am extremely happy with my new hot water service. What a top team of people! Helped with the rebates and any queries I had. Very prompt and reliable. Thanks Hot Water.com.au
Response from the owner:Hi Deb, thanks for taking the time to leave a review and we're so glad you're happy with the service! :)
Really easy process from initial contact through to installation and rebates. Good advice and happy with the Aquatech heat pump so far.
Response from the owner:That's wonderful to hear! Thank you so much for the review 😊 have a great week!
We had been planning to convert our home to fully electric, when our gas HW system gave up and made the decision an urgent one. Natika was amazing, explaining how the rebates worked and offered us a payment option that suited us. We now have a beautiful new heat pump hot water system, have ditched gas for good and a sleek induction hot plate to replace the gas stove. Thank you 😊.
Response from the owner:You're too kind Jacqui, it was my absolute pleasure! 😊 have a lovely weekend
From the quote to the installing everything went smoothly. I Store has been working great. A nice team to install and Natika was very helpful on the phone. Answered all my questions and helped me register for the warranty. Highly recommend.
Response from the owner:Thank you so much Dianne, that's fantastic to hear and I'm so glad I could help 😊 have a wonderful rest of the week
Fast service and better deals
Response from the owner:Thank you very much for leaving us a review, it's much appreciated 😊
Quoted $600 under the nearest competitor, prompt and professional tradesman finished the job , couldn't recommend them enough. Best in the business 👍
Response from the owner:Thank you so much Al, it was our absolute pleasure! Have a lovely weekend and thank you again for leaving such a great review.
One needs to do your homework properly to get the best value for money. We have done that. The best company to supply the product, do ALL the rebates admin, installation of our iStore heat pump including the plumbing as well as electrical work AND removing the old heater… all this in a few hours. That company is Hotwater.com.au. Real professionals in Adelaide. Don’t look further.
It’s now two weeks later and every bath and shower is perfect. Thank you Hotwater.com.au.
It’s now two weeks later and every bath and shower is perfect. Thank you Hotwater.com.au.
Response from the owner:Thank you so much Barry for your kind words and incredible review! I'll be sure to pass this onto the team 😊 it's been a pleasure to help.
A pleasant experience.
From my initial phone enquiry
Having someone out to check my quote. Two days later, all installed perfect.
Just like they said,
no hidden extra's
Tradespeople were punctual.
Thank you very much
Hot Water .com
From my initial phone enquiry
Having someone out to check my quote. Two days later, all installed perfect.
Just like they said,
no hidden extra's
Tradespeople were punctual.
Thank you very much
Hot Water .com
Response from the owner:Thank you Geoff, that's wonderful 😊 Appreciate you taking the time to leave us a review. It's been a pleasure
I highly recommend this company. The reason are: (1) they install my heat pump water heater in a short time and they did well; (2) The communication are fantastic, you can message them anytime and they quickly response; and (3) they are friendly.
Response from the owner:Thank you so much for leaving us such a great review. We really appreciate it 😊 have a great weekend
Another five star review! The service from start to finish was amazing. Had a temporary unit installed to get us through the weekend when our old unit died and then the nicest crew turned up promptly on Monday to install the new iSolar unit. Very neat and tidy job, everything fully explained - couldn’t ask for a better experience.
Response from the owner:That's wonderful to hear! Thank you so much, I'll be sure to pass on your kind words to the team 😊 have a lovely rest of the week
The hotwater team arrived at the agreed time. The workmanship was high quality and they explained the functions of the unit. The communication from the office staff was excellent and they negotiated the government rebates for a great price.
Response from the owner:Thank you Vicki for your lovely review 😊 I hope you have a wonderful rest of the week!
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