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Envirosun heat pump hot water review.

Known for HP Plus M9 all-in-one heat pumps.

6.0FairEnergyUpgrade Score out of 10

#8 of 16 heat pump brands

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Founded
About 1991
Headquarters
Malaga, Australia (Energie Group Australia)
Stock exchange
Not listed
Selling in Australia since
1991
Series on the approved list
3

Our verdict

Is an Envirosun heat pump right for you?

The HP Plus M9 is a solid, quiet R290 all-in-one with one of the longest warranties around: 10 years on the tank and compressor for the first owner. Its rated savings are mid-pack, and avoid the older Classic and Enviroheat models, which still use R134a.

Rated 6.0/10, #8 of 16 brands we rate for heat pump hot water.

A good fit if

  • You want a long tank and compressor warranty
  • You plan to stay in the home

Maybe look elsewhere if

  • You want the highest rated savings
  • You're offered an Enviroheat or Classic model

What we like

  • 10-year cover

    Tank and compressor parts for the original owner, with 2 years labour.

  • Quiet

    42 dB(A) at 2 metres.

Worth weighing up

  • Labour

    Only 2 years of labour cover, and 5 years of parts for a later owner.

  • Older models

    The Classic and Enviroheat units use R134a and have shorter warranties.

What owners say.

4.5out of 5

From 163 owner reviews of Envirosun 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 Envirosun heat pump hot water.

6.0

The same five parts for every brand. No brand can pay to change any of it. The full method

  • Product scores · 40%

    5.6

    Best two series: HP Plus M9 7.1, HP Classic 4.2

  • Owner reviews · 20%

    7.0

    4.5 stars from 163 owner reviews on ProductReview and SolarQuotes

  • Track record · 15%

    7.0

    35 years selling in Australia, not listed

  • Installer and market standing · 15%

    2.8

    Not placed in the 2025 or 2026 installer votes for heat pumps; 163 owner reviews

  • Australian support · 10%

    9.0

    Australian office, local phone, service email

Every Envirosun 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

  1. 1What size tank suits my household, and why?
  2. 2Where will the unit go, and how close is it to bedrooms or the neighbours?
  3. 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
460 Victoria Road, Malaga WA 6090
Phone
1300 825 143
Email
info@energiegroup.com.au

Energie Group Australia also sells the same heat pumps under its older Enviroheat badge, which carries a shorter warranty.

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 Envirosun heat pump hot water, checked 6 October 2026.

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