1 photo
Rinnai RINV51RC (5.1kW)

Rinnai RINV51RC (5.1kW)

MPN: 36246982
3.5 from 4 reviews · View Statistics



4 reviews
  • Build Quality
    3.0 (1)
  • Value for Money
    3.0 (1)
  • Ease of Use
    4.0 (1)
  • Cleaning & Maintenance
    4.0 (1)
  • Noise Level
    4.0 (1)
  • Heating / Cooling Speed
    3.0 (1)

faulty unit


I am an air-con installer. This was my first unit out 500 plus i installed. Ran for week and all of a sudden stopped heating . On behalf of customer i raised the warranty claim. It took week for technician to visit. Initially they took the credit card detail of the client advising in case it was installers fault ( my fault). technician went out and confirmed it was fault with outdoor unit and will be fixed in 3 weeks time. what a product quality and warranty service they offer. I can also comment about the product but i believe it is not good for my profession.
shame on Rinnai.

Purchased in July 2019 at Harvey Norman for A$1,100.00.

Build Quality
Value for Money
Ease of Use
Cleaning & Maintenance
Noise Level
Heating / Cooling Speed
Incentivised ReviewNo
Home Insulation LevelAverage
Room TypeLiving/Dining Area
See all answers
Rinnai A.Rinnai

Thank you again for your time. I waited 30 minutes on the phone to speak and I was told , that i will get a call back with update. Never received a phone call.
Thanks again for your excellent service.

Lasted two years before it malfunctioned


This unit was installed in our investment unit in July 2016. At October 2018 the unit had malfunctioned and would not work (no power indication, no cooling, heating or fan operation). By all accounts the unit heats/cools well, however, we would have expected the mean time between failure to have been longer.

Date PurchasedJul 2016
1 comment
Rinnai A.Rinnai


  • 5 reviews

My saviour!


We recently purchased this aircon on a 40 degree day and had it installed immediately. The plumber and electrican advised the job was “easy”. The aircon works excellent and cools down almost my entire 4 bedroom 2 lounge house. (Single story). The numbers on the screen are dull which means at night we are not kept awake by a bright light.

Date PurchasedJan 2018
1 comment
Rinnai A.Rinnai

Thanks for your review Zoe, we are happy to hear the air conditioner is working so well for you.

Split System Air Conditioners

Find out how Rinnai RINV51RC (5.1kW) compares to other Split System Air Conditioners

Know better, choose better.

Compare all


  • 5 reviews

Does the job well


Ok system. Value for money, however as compared to other systems out there it has lots of rooms for improvements. I really love the LED temperature interface as I do not have to look at the remote to find out what the temperature is.

The system cools pretty fast for my living room which is pretty good however after reading the first comment, I don't know how long this system will last.

Date PurchasedNov 2011
1 comment
Rinnai A.Rinnai

Thanks for the review Zhen, we appreciate your comments. The Rinnai G series airconditioning units have a 5 year manufacturing warranty for domestic use for peace of mind with your purchase.

See all Rinnai G Series reviews

Questions & Answers

Julitha R.

Julitha R.asked

RINV51RC (5.1kW)

I have moved into a rental property which has this unit installed. It has a 'Heat' switch, but still seems to just pour out cold air. Am I stupid? Does this unit heat as well as cool??

2 answers

It should. If it doesn't then it's broken. They do work particularly poorly though and require frequent (several times a year ) services, in which they will have to either take the entire unit apart, or clean it with high pressure water. High pressure air doesn't work on these units from my experience.

But all that aside, even when not working well, they usually can produce some warm air.

Rinnai A.Rinnai

Thanks for the question Julitha R, we would recommend contacting our Technical Department to discuss this matter further. They can be reached on 1300 555 545 (option 3).

Rinnai Australia



RINV51RC (5.1kW)

I recently purchased and had installed a g series 5.1 kw and lately on the temperature screen on the ac unit, it's been displaying P5.
What does this mean?
Also, when we first operated it, it cooled very quick but now in the past week it hasn't felt upper cold like it did 6 weeks ago.
Can you help?

3 answers

Hi! As you have said it’s a new purchase I would suggest you call Rinnai (1300 555 545) as the unit comes with warranty, otherwise maybe check your books which came with the machine? Sorry!
Mines still perfect.
Good luck!

Rinnai A.Rinnai

Thanks Mimmo 105 for the question. With your model of airconditioning unit P5 indicates an overheating issue with the discharge pipe and the unit is shutting down as a protection. We would recommend booking a service call to diagnose the issue. our 1st care department can be reached on 1300 555 545.


As usual Rinnai is trying to play down the fact that their Air cons are nothing but cheap Chinese parts that break and over heat under the most normal of conditions AVOID RINNAI AIR CONS AT ALL COSTS CHEAP CHINESE PARTS!

Get an answer from our members and Rinnai representatives


Compare all 4 Rinnai G Series
CategorySplit System Air Conditioners
Price (RRP) A$1,249.00
Features Inverter, On/Off Timer, Remote Control and Wi-Fi Smart Control
Cooling Power5.1 kW
Heating Power5.5 kW
Reverse Cycle Yes
TypeFull System (Indoor & Outdoor Unit)
Cooling Energy Rating 2 stars
Heating Energy Rating 2.5 stars
Operating Temperature for Cooling-12 to +47
Operating Temperature for Heating-12 to +47
Indoor Unit Dimensions 315 x 970 x 235 mm
Indoor Weight14 kg
Max Indoor Sound Pressure Level46 dB
Outdoor Unit Dimensions 535 x 802 x 298 mm
Outdoor Weight38 kg
Max Outdoor Sound Pressure Level54 dB
Max Outdoor Sound Power Level62 dB
Manufacturer Warranty5 year(s)
Compare all 4 Rinnai G Series

Visit official website
  • MPN: 36246982
  • GTIN13: 9314109219555

ProductReview.com.au has affiliate partnerships. These do not influence our content moderation policies in any way, though ProductReview.com.au may earn commissions for products/services purchased via affiliate links.