Sanden heat pump hot water review.
Known for Eco Plus CO2 heat pumps.
#1 of 16 heat pump brands
- Founded
- 1943
- Headquarters
- Isesaki, Japan; Condell Park, Australia
- Stock exchange
- Tokyo Stock Exchange (6444)
- Selling in Australia since
- 1978
- Series on the approved list
- 1
Our verdict
Is a Sanden heat pump right for you?
Our top-rated heat pump brand on the product itself: Sanden's Eco Plus is near silent at 37 dB, runs to -10°C on natural CO2, and comes from a listed Japanese company installers rate. Against that, it costs more and owners are split: 3.6 stars from 134 ProductReview reviews, with most complaints about warranty service.
Rated 7.5/10, #1 of 16 brands we rate for heat pump hot water.
A good fit if
- You're in a cold climate
- The unit sits near a bedroom
Maybe look elsewhere if
- Budget is the priority
What we like
Near silent
37 dB(A) at 1 metre.
Cold climates
Runs to -10°C without an element.
Installers rate it
Joint third in the 2026 installer vote.
Worth weighing up
Price
One of the most expensive heat pumps.
Heat pump warranty
6 years on the heat pump unit.
Owner reviews
3.6 stars from 134 reviews on ProductReview; complaints focus on warranty service.
What owners say.
3.7out of 5
From 152 owner reviews of Sanden heat pump hot water on independent review sites.
Ratings as published on 8 October 2026. Some review sites invite or reward reviews, so we weight ratings by how many reviews sit behind them and pull small samples towards an average. We don't collect or edit these reviews.
How we rate Sanden heat pump hot water.
7.5The same five parts for every brand. No brand can pay to change any of it. The full method
Product scores · 40%
8.9Best series: Eco Plus CO2 8.9
Owner reviews · 20%
3.83.7 stars from 152 owner reviews on ProductReview and SolarQuotes
Track record · 15%
10.048 years selling in Australia, listed company
Installer and market standing · 15%
6.3Joint 3rd in the 2026 installer vote for heat pumps; 152 owner reviews
Australian support · 10%
7.0Australian office, local phone
Every Sanden heat pump series.
Tap a series for why it scores what it does, its full specs, every version and the datasheet.
Questions to ask your installer
- 1What size tank suits my household, and why?
- 2Where will the unit go, and how close is it to bedrooms or the neighbours?
- 3Which STCs and state rebates are already taken off this price?
A good installer will be glad you asked, whichever brand you choose.
Australian support
- Office
- 6/17 Willfox Street, Condell Park NSW 2200
- Phone
- 1800 146 123
Your installer is the first contact for a warranty claim. Use these if your installer has closed.
Recalls and known issues
No recalls on the ACCC Product Safety register for Sanden heat pump hot water, checked 6 October 2026.
See your home's score in two minutes.
Free, independent and no obligation. Up to three vetted installers quote on your bundle.