We’re on the hunt for the oldest working hot water system in Mandurah and Nearby Suburbs. Find it, and we’ll rip it out and replace it with a Brand new energy-efficient Rheem Hot Water Unit worth up to $5000.00 inc. GST. On us.
Around here, we see hot water systems that have been quietly chugging away for 20, 25, even 30+ years. Fair dinkum legends, the lot of them.
But old systems cost you more every single month in energy bills, they struggle to keep up, and when they finally give up the ghost, it’s always at the worst possible time (usually a freezing Tuesday morning).
So every month, we’re tracking down the oldest working hot water system in Mandurah and giving it a proper send-off. A full like-for-like swap to a brand new, energy-efficient unit worth up to $5000.00 inc. GST. Supplied. Installed. Done.
Takes less than 30 seconds. Tell us a bit about your system.
Our team contacts you to lock in a quick Hot Water Age Check at your place.
One of our tradies swings by, checks the unit, and confirms the age. Takes about 15 minutes.
The oldest working hot water system entered that month takes home the upgrade.
Every single verified entrant gets a $200 Gift Card toward a new hot water system installation, valid until 31 July 2026.
So even if your system isn’t the oldest, you’re still walking away with something.
Local Mandurah team that actually shows up
Upfront pricing with no nasty surprises
Workmanship Guarantee on every job
Hundreds of 5-star reviews from real local customers
Nope. Not a thing.
No worries. That’s what our verification visit is for. We’ll figure it out.
Yes, but the visit usually wraps up in under 15 minutes.
Homes within the Mandurah and surround areas. If you’re not sure whether you qualify, enter anyway and we’ll let you know.
One winner per month. We’ll contact you directly if you’ve taken the crown.
We replace your old system with a new energy-efficient equivalent. Same type, better technology, zero drama.
10/10 service. Amazing. Highly recommend. I realise at 6.45am on Monday morning my hot water system is broken. I call the service at 8.00am. Before 10am I have had one service person at my property confirming that I need a new hot water system. A second person arrived with the hot water system for installation and everything was sorted by 11.45am the same morning. This was superior service. Thank you. Melissa F
I’ve used these guys a couple of times and they don’t disappoint. Fast, fair and professional. Yesterday my boiler died. By this afternoon I was having a hot shower. What’s not to like?
We received a huge water bill, showing we were losing more than 1,000 litres of water a day. Called Kelly’s and they sent us a plumber within an hour. He solved it in 5 minutes and did not charge us. I just love working with these guys, they are quick, professional and genuinely there to help their clients when they are in trouble. Thanks Kelly’s!
They’ve done good work and a great service
A very BIG thank you for the amazing service. Our hot water system broke and Kelly came to our rescue and within a couple of hours of calling we had a team on site to install a new system. Outstanding service from the call being taken to the system installed, thank you. Highly recommend this company as we have always had a great service.
I had a fast response when Zac came over and quickly identified the problem with the control valve. Although he didn’t have the necessary part in stock, he returned the same day to fix the issue. Good bloke and we are extremely grateful for his efficient service. I would highly recommend Kelly’s to everyone. Thank you so much Kelly’s.
2025- Have to update my review as we needed to call Kelly’s again. This time our hot water system started leaking. They came and saw us, answered all my many questions and installed a new system in just a few days. As always helpful, knowledgeable and a great price. 2024, From start to finish the team at Kelly’s were informative and wonderful. We had Zac come out as our old taps seemed to be leaking. He checked them all over and sourced the filters needed (not typical size as I’ve had issues with other taps) Zac returned and fixed all our leaking shower taps and also installed a new outside water tap. Informative, helpful, well priced, family business, friendly staff. All boxes ticked!
Great service, highly recommended
Really fast turn around from inspection to complete replacement under warranty for my Rheem hot water. Polite and efficient workmanship. Thank you heaps for getting us back up and running so quick.
Me and my folks have used Kelly’s Hot Water Gas and Air a few times over the last decade or so for various things. Always genuine, professional and friendly. Definitely recommend to call Kelly’s first and also save them to your phone under plumber, so in an emergency you know who to call! With 20 years in Business they must be doing something right!
Amazing service from the team! Great communication & speedy service. Thanks for your quick response, order & install of our new hot water system. Much appreciated!
Kelly’s Plumbing replaced our failing Hot Water Service quickly and efficiently. Price was good and would highly recommend.
Thanks to Lisa and her team for getting us out of a bind on a Sunday morning. Great communication and fast response, super helpful in a stressful moment. Great work team …
terrific job! thought this was gonna be a headache, the lads tested some stuff and pressed some buttons, said this thingy is the broken part and fixed it without me needing to understand fractal geometry. Thank you! .-D
Fantastic customer service, fast turn around. Have used them before & very happy. 5 stars easy
Awesome company to deal with! Our hot water system died on Sunday and I contacted Andrea at Kelly’s Hot Water first thing Monday. Andrea sent me a quotation a short time later on Monday morning and after swapping a few jobs we had our new Rheem water heater installed this afternoon (Monday) The installer Regan was friendly and knew what he was doing and we couldn’t be more happy with the service received from the staff at Kelly’s Hot Water. We had some advice from Kelly’s a few years ago and our dealings were excellent then. I wouldn’t hesitate to recommend Kelly’s Hot Water. Well done team..John
Geoff at Kelly’s is so approachable and accommodating. Friendly professional service provided by not only Geoff but his staff. I have had two houses fitted with gas facilities and appliances and have never had any issues or problems. Very well priced and quotes always offered and supplied. I can’t recommend Kelly’s highly enough! Don’t even hesitate to give them a call.
What can I say, absolutely amazing service. We had Geoff out many moons ago when Kelly’s was new to Mandurah. I was so impressed with the respect he showed in our home, by putting booties over his shoes to come in the house. Well nothing has changed! We had a water leak, and Lisa pointed me in the right direction with a leak detector person and then Regan, their son, came and fixed the leak the same day. So wonderful to have trades in our community who do a great job are so personable too. Thank you so much to the whole team at Kelly’s Hot Water and Gas .-)
Our Tuesday morning took a surprising turn when our hot water system failed, but a swift message to Lisa sparked a rapid response. After a prompt callback, I dropped the grandkids off at school and returned to find a service technician providing quotes and expert advice. We selected the ideal system and contacted Andrea in the office to book the installation for the next day. The team was courteous, informative, and even removed the old unit, leaving us thoroughly impressed with Kelly’s Hot Water & Gas. We would highly recommend them to anyone. Thanks to Lisa & all the team for your wonderful service. Denise & Mike
When I found out that my Mum had an issue with her hot water system, Kelly’s was my first call. Despite being fully booked and short staffed, within a matter of hours Zac came out, identified the issue, replaced the faulty part, and had the hot water back up and running. Boy did Mum enjoy her steaming hot shower tonight on this cold May day! Thank you, Kelly’s. Five stars for service, professionalism and price ☆☆☆☆☆
I was so impressed with the service I received that I had to leave a positive review. I called at 9.30am on a Monday, hoping to be able to get someone out to fix a leak at some time during the week. I was given 12-2pm that day and when I asked for a phone call 15 minutes prior to arriving to ensure I could leave work , that was no problem. I received a call at 12.55pm, raced home to find Zac waiting patiently. He identified the issue and fixed it within no time and I nearly fell over when he said the price, in a good way! I was expecting to need to donate a kidney to pay for the repair and it was actually as cheap as chips. Zac was lovely, gave some good advice for future and was on his way in a flash. It is becoming so rare to get good quality service at a reasonable price but I definitely received that. Thanks Kelly’s, I’ll be calling you first time every time now.
I fully commend Kelly’s Hot Water, Gas & Air Service. Had to have them out due to a failure in our Gas Hot Water System and they were prompt and very efficient. Thanks to Andrea in the office who kept us informed and Regan for the workmanship on site.
A big Thank you to Kelly’s plumbing for replacing our boiler, & fixing our leak!! You saved the day. Great Price Great service. Wouldn’t go anywhere else! No need to chase around for quotes….This local honest family business is the only one you need to rely on.
We had sold a rental property and 2 days from settlement I found the hot water system not working. Rang at lunchtime and Tim arrived earlier than I was told. He quickly diagnosed the issue which necessitated a replacement unit. Lisa in the office was able to rearrange Tim’s schedule to enable the install that afternoon. He was very particular in how the job was done. Workmanship was first class. Highly recommend these guys.
3 year old instant hot water system sprung a leak on the heat exchanger, Andrea and her team and the manufacturer came to the rescue with a new unit. Excellent workmanship cannot fault the installation.
Feared our gas water heater had finally given up the ghost, but a cleaned water filter later and the water pressure is better than it ever was! Knowledgeable serviceman, answered all our questions about the pros and cons of future replacement. Top Notch service from Kelly’s, cannot recommend highly enough…
Had Zac come out to our holiday home in Rockingham during the week. Great bloke and knew exactly what the problem was and fixed it with a minimum of fuss. The whole experience from start to finish was pleasurable and efficient. Would recommend Kelly’s to anyone needing their services. Very happy
Kelly’s Plumbing are an outstanding, professional organisation. We just had a leaking pipe under our paved driveway. I dug up the sand and they were on site within an hour of making the call. I spoke to Lisa and she moved heaven and earth to accommodate us. Ian was the plumber on site, he was was quick, professional and polite. This is the second time Kelly’s Plumbing have reacted to urgent plumbing issues to our house and have provided a 100% solution that day both times. Considering this was an hour turn around from making the call, the price was more than reasonable, bordering cheap. I cannot recommend Kelly’s Plumbing enough.
Thanks for the great service Andrea & Regan! You guys were fast, friendly, professional and efficient, and took the time to help us with choose a replacement system that was right for our needs, and even fixed a problem we didn’t know we didn’t know we had. Thanks for a great experience.
I had a gas hot water heater stop working on Friday, they came out to look at it, I knew it needed replacing and they had it replaced and working by that afternoon. Great service, nice people to deal with and couldn’t ask for better service. Price was on point too. Recommend them if you need a plumber. Thanks guys!