GAS HOT WATER SYSTEMS

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Rinnai Infinity Confintuous Flow Infinity 16

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

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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.

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CHECK OUT OUR LATEST GAS HOT WATER DEALS

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RINNAI INFINITY 16 FROM $1,245 inc GST*

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.

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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.

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.

Excellent
HOT WATER COM AU
Based on 454 reviews
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Annalise Soontiens
Excellent communication from the start of enquiry up to the quick and efficient service. Great delivery of service was clean and timely.
Jamie
Can't fault them, communication, punctuality, price, quality of work...all great
Response from the owner:Hi Jamie, great to hear everything met your expectations! Thanks for choosing us, and we appreciate your review.
Jackie
I highly recommend this organisation. I bought a heat pump water heater to replace gas instant. The whole process took about maybe 2 weeks from first enquiry to installation - amazingly fast! They were very responsive to questions, I was given good advice about available systems (the one I originally wanted was not available), it was a competitive quote and they organised all the rebates so I didnt have to work it out for myself. Thanks very much for all your help.
Response from the owner:Hi Jackie, thank you for taking the time to share such a detailed review. It’s great to know the system advice, competitive pricing and rebate handling made the heat pump upgrade easy for you. We truly appreciate the recommendation, and hope you have a lovely weekend :)
Matthew Turner
Amazing service. I rang someone at 8 am and needed a new hot water system urgently and they came out that afternoon and completed the job to a very high level! Plus a very reasonable price. Highly recommended 👌
Response from the owner:Thank you for the great review Matthew! Emergency situations can be stressful, so we’re glad we could help. Have a great weekend :)
Carol Alessio
Wonderful company. Quick and efficient work and reasonable price. Highly recomme ded even by oldies who were at times a bit slow to respond to emails!
Response from the owner:Hi Carol, thanks so much for the lovely feedback! We’re glad the process was smooth and reasonably priced
5 STONES Authentic Singapore Kitchen
Very efficient communication and timely installation. Honest and professional.
Response from the owner:Thank you! Happy to hear everything was handled efficiently, and we appreciate your lovely review.
Joshua Nitschke
Very competitive pricing and did a great job for replacement hot water system, including powerpoint and repairing a seperate leak 🔥
Photo from customer review
Response from the owner:Hi Joshua, thank you for the great review! Glad we could help with everything and get it all sorted for you.
susan speck
Recently had a new hot water service installed . Great job , non intrusive , on time , very happy with the service.
Response from the owner:Thank you Susan! Great to know everything went smoothly, and that you're happy with the install :)
Simon Gill
Very happy with our new hot water system. It was installed on time, was completed professionally and was a great price. Can’t ask for much more than that!
Response from the owner:Thanks so much for taking the time to leave a review Simon, we appreciate the kind words. Enjoy your new system and have a lovely day :)
Justin Price
Response from the owner:Thanks for taking the time to leave a review Justin, hope you have a lovely weekend
Peter Partridge
Ethan arrived early, and was quick to get stuck into fixing our hot water service. It was a no fuss experience, and he was very courteous.
Response from the owner:Hi Peter, thanks for the great review! We’ll be sure to pass this on to Ethan, and we're glad it was an easy experience for you. Have a nice day!
Cath Danz
Smooth and easy process, good info and communication, fair price.
Response from the owner:We appreciate your review Cath, glad you felt well informed and happy with the price :)
H Y
I am pretty happy with the service of HOT WATER COM AU. From quoting to installation, easy, professional and quick for each step. They don’t charge for quoting and be honest with government rebate that has exhausted at the end of year. Comparing to the other company that I also contacted which charge for quoting and hide the fact that two rebates are available but one exhausted. Change from gas to heat pump water system is much easier than I thought when I chose HOT WATER COM AU to do it for me and price is pretty good as well. Highly recommended!
Photo from customer review
Response from the owner:Thank you for such a kind and detailed review! We’re really glad the process was clear, honest and easy, and that the heat pump changeover went smoothly. Your recommendation is greatly appreciated, and hope you have a lovely weekend from the Hotwater.com.au team :)
Junshi Li
Good job
Response from the owner:Thank you! Glad you’re happy with the service, Junshi :)
Brian Dey
We were very impressed by the prompt service and very professional installation of our new hot water system. Highly recommend this company.
Response from the owner:Appreciate your kind review! Prompt and professional service is always our goal. Have a lovely weekend!
Meena Sharma
Excellent. They were efficient from start to finish and sorted problems without any bother. Highly recommend this team.
Response from the owner:Thank you Meena! Glad we could make the process easy and stress-free. Appreciate the recommendation :)
Brenton Foster
Super fast and helpful response to initial enquiry. Chatted through the various options and gave useful info to help with our decision. Installation was very neat and efficient. Would happily recommend!
Response from the owner:Thanks for the great feedback! We’re glad we could talk you through the options and get everything installed smoothly. Really appreciate the recommendation.
pam sargent
Excellent service. Polite, punctual and happy to answer any questions. Installation was quick and efficient. Highly recommend
Response from the owner:Thank you for the kind words Pam! We are so pleased you had such a positive experience. Thanks for recommending us and enjoy the new system!
Steve Bousfield
Outstanding process from beginning to end. Plenty of choice for my new system. Easy online selection and booking. The new heat pump was installed on time with the minimum of fuss. Great service.
Response from the owner:Hi Steve, we’re thrilled to hear it was smooth sailing from start to finish! Enjoy your new heat pump and thank you for the lovely review.
Craig Jones
Response from the owner:Hi Craig, we really appreciate you taking the time to leave us a review!
Robin Taylor
Very good service. Booking the quote was very easy. The installation team was great - on time, polite, helpful and did a very good job. Happy to recommend these guys.
Response from the owner:Hi Robin, thanks so much! We love making things easy from the first call right through to install so we're glad the team looked after you so well. Have a lovely week!
Ferenc Vekas
Recently had a Haier 330L heat pump water heater installed. Guys did a great job, quick easy and friendly service. Unit works great, plenty of hot water
Response from the owner:Fantastic to hear! Thank you so much for leaving us a review, it's much appreciated 😊 have a great week.
Karen and Brad Magnusson
Very pleased with the service and professionalism. Would definitely recommend hot water .com
Response from the owner:Thank you so much Karen & Brad, it was our pleasure to help 😊 we really appreciate you leaving us such a lovely review.
Ernest Hoskin
Ethan provided exceptional service and installed our water heater in a very professional manner. It's not very often these days you can say this, but I commend the company for employing such people. The price and quality was very competitive. Well done.
Response from the owner:Thank you so much! That's wonderful to hear and I'll be sure to pass this onto Ethan, he'll be thrilled 😊 have a wonderful week
Kelly Bras
I was very happy with the price they quoted for an istore 270L. Their communication was really good and they turned up on time. The installers did a great job. I'd certainly use them again if i needed.
Response from the owner:That's wonderful to hear, thank you so much Kelly 😊 we really appreciate you taking the time to leave us such a lovely review. We hope you have a wonderful week.
James Telford
Response from the owner:Thanks James for leaving us a 5 star review, it's much appreciated 😊
chad gross
Great service , right from the phone call to the finishing install , and a great price to match , highly recommend
Response from the owner:Thank you so much for the amazing review! It was our pleasure 😊 have a great week!
Kerrie Le Lievre
Can't recommend these guys highly enough. Clear communication, great customer service and excellent (and quick!) work by their professional installers made switching from instantaneous gas hot water to a heat pump a breeze.
Response from the owner:Thank you so much Kerrie for the raving review, I'll be sure to pass this onto the team (they'll be thrilled!) 😊. Have a wonderful week!
Dougy Dickens
Great people bestes price neat workmanship phone quote was exactly the price neat job polite insallers so happy we used them for PRICE and quality dougy
Response from the owner:Thank you for taking the time to leave us a 5-star review, it means a lot to our team 😊 happy we could help!
Betty Dickens
Response from the owner:Thanks so much for the 5-star review! 😊
Dean Brooks
I got a few quotes for a heat pump and asked these guys if they could beat them and they did and pointed out why they reduced the price by $100 bucks which I thought was excellent service not there to rip me off and the installation was neat and tidy for a plumber and the apprentice and off course and I had ring the office and the receptionist was helpful and had amazing customer service polite and bubbly to keep up the great work Dean.
Response from the owner:Thank you so much Dean for the review, it was a pleasure working with you, and we’re so glad everything went smoothly 😊 have a great week!
TerrStep
Fantastic customer service ... liaised with me to arrange the best possible deal on my replacement gas hot water system ... half the price of the quote from my local plumber ... promptly scheduled installation, which took less than two hours ... very happy with the outcome and highly recommend Hotwater.com
Response from the owner:Thanks so much for the 5-star review! We're thrilled to hear and will be sure to pass this onto the team 😊
Martin Nguyen
Very competitive pricing.
Quick
No bullshit
A++++
Response from the owner:Thank you Martin, that's great to hear! We appreciate you leaving us a review, have a wonderful week!
jim coleman
Would highly recommend very helpful and informative on products fast installation no mess
Response from the owner:Thank you so much Jim for leaving us a review, we really appreciate it! 😊 It was our pleasure
Friend Edwards
Extremely pleased with all proceses involved in the advice provided, decisions, then purchase and instillation of our Heat Pump. Comunication was clear, helpful, easily understood and prompt. Those directly involved in the instillation were eficiente, tidy and clear with advice. Very happy to recomendar a local organización. Many thanks. Friend E.
Response from the owner:Thank you so much, that's wonderful to hear and we really appreciate you leaving us such a lovely review. Have a great week! 😊
Christopher Huntington
The best price for heat pump system, and great products, hands down. Fabulous customer service and follow ups.
Response from the owner:Thanks so much Christopher! We’re big believers in looking after people before and after install, so really happy to hear that came through for you. Have a lovely weekend!
Gigi Skip
I recently had my hot water system replaced as brown water was coming out of the tap for a few weeks. The service provided by hotwater was excellent. From the time I made the inquiry to when the job was completed was done within a couple of weeks. I was very impressed!
Response from the owner:So glad we could help sort that out quickly Gigi, no one should have to put up with brown water for long! Thanks for your lovely feedback 😊
Geoff Kent
Installed a IStore 270L through these guys presale service excellent as I asked lots of questions, the installation crew arrived on time neat and tidy install no problems and Hotwater.com employ all thier installers no subcontractors which I prefer.
Now we have heaps of hot water and our electricity is only $0.06 cents KWh as we have solar panels and a battery.
Response from the owner:Love to hear this! We’re always happy to answer questions, and it’s great knowing your setup is now running efficiently and saving you money too. Thanks for taking the time to leave such a wonderful review Geoff!
Rod Cromie
Customer service for quoting, communication and installation of a new HWS has been excellent. Bonus - their prices are are good too
Response from the owner:Thanks so much Rod! We’re glad to hear everything went smoothly, and we’ll always take a bonus point for pricing too 😊
Julie Limb
Helpful and accommodating staff with prompt answers to questions
Response from the owner:Hi Julie, thanks for your kind review! We’re always happy to help and it’s great to know you felt supported throughout the process. Enjoy your weekend!
C BUCKLEY
Very happy with installation of Aquatech heatpump. Hot water pipes are well insulated. Left the work tidy. Thanks.
Response from the owner:Thanks for taking the time to leave such a lovely review, Craig. We're so happy hearing you are satisfied with our work. Please let us know if there's ever anything else we can assist with :)
Darryl John Smith
very happy with the I store the staff was quite friendly and the technicians were good and I highly recommend them
Response from the owner:Thanks so much for the lovely feedback Darryl! We're really glad to hear you were happy with the iStore and that our team made a great impression. We truly appreciate the recommendation!
Melissa Franklin
Very happy. Best price, friendly staff. Highly recommend.
Response from the owner:Thanks Melissa! Glad to hear you're happy with the install, and we appreciate the lovely review. Have a great week! :)
Tom Putnam
Excellent service, price and communication throughout the process.
Response from the owner:We’re so pleased you’re happy with our service—it was a pleasure assisting you with your new system
rob TRICE
job well done
Response from the owner:Thank you for taking the time to leave a review Rob. Have a lovely week!
Anne Wharton
Very happy with the installation of our new heat pump - all seemed to go very smoothly. A very minor omission was removing the rust on the cement from the old one.
Response from the owner:Hi Anne, thank you for the feedback. We have passed this on to our install team, and we appreciate the kind words
David Wallace
Just had new system installed. Done efficienctly.
Response from the owner:Glad to hear that everything went smoothly. Thank you for taking the time to leave a review David!"
Daryl Farry
Nice fellows who installed the system & plenty of hot water on tap. Fair pricing & punctual.
Congrats!
Daryl
Response from the owner:Thank you so much for your kind words! We're glad to hear you were happy with the installation team and are enjoying plenty of hot water 😊 have a wonderful weekend!
someone *
This business is exceptionally helpful, honest,polite and friendly.
They are always ready to help even when we had an initial issue with the Hot water heater.
This was definitely NOT their fault but they helped us solve the issue anyway.
Their communication and replies to questions are superb .
Any business is happy to take your money but the quality of the business is what they do when there is an issue and this is the gold standard for customer service.
This business passes that test with flying colours and I could not recommend them more highly.
Emphatically recommend.
Response from the owner:Thank you so much for your incredibly kind and thoughtful review. We truly appreciate it, and we're always happy & here to help! 😊
Michelle Huang
Quick and efficient with competitive price, everyone was friendly, easy to book in, chat to and pay :)
Response from the owner:Thanks a ton for your kind words Michelle! We’re grateful for the opportunity to help and happy you’re pleased with the results.

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