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SHP-O 300 Plus hot water heat pump, 300 litres
Stiebel Eltron SHP-O 300 Plus · 204473

SHP-O 300 Plus hot water heat pump, 300 litres

Stiebel Eltron's current 300 litre heat pump for 4 to 6 people in most of Australia. Natural refrigerant, app control, and a normal 10 amp power point.

300 Ltank
4.21COP (EN 16147, A20)
-5°Cheat pump works down to
65°Cmax water temperature
47 dB(A)at 2 m
10 Anormal power point
$3,829 $1,370 under RRP

GST included · Stiebel Eltron RRP $5,199

Australian stock · ships in 3-5 business days

Federal rebate (STCs) for a 2026 installation: about $570 in Sydney, Brisbane, Adelaide and Perth, $608 in Melbourne, $570 in Canberra and Tasmania. How to claim it

  • Free delivery to capital citiesExcept Darwin. Elsewhere a flat $200.
  • Genuine Stiebel Eltron, Australian stockWith the manufacturer's Australian warranty.
  • Tax invoice by emailYou need it for warranty and rebate claims.
  • Secure checkoutVisa, Mastercard (Stripe) or bank transfer.
Right for: Households of about 4 to 6 people outside the coldest areas. The heat pump keeps working down to -5°C.
Not for: Canberra, Tasmania, alpine and cold inland areas with regular hard frosts: choose the SHP-O 301 Premium.

Why this model

  • Natural R290 refrigerant (global warming potential 0.02). On Solar Victoria's approved product list in October 2026.
  • MyStiebel app: check and adjust it from your phone.
  • Solar ready: an SG Ready input lets it use surplus solar during the day.
  • The heat pump heats to 65°C; a 1.5 kW element backs it up.
  • The compressor sits outside the airflow, which keeps it quiet.
  • Goes outdoors, or indoors in a room of 13 cubic metres or more.
Installer brief

What your plumber and electrician need to know

Send this to your installer before you order and ask for a fixed price. If anything here doesn't suit your house, you find out before you spend.

  • Bathrooms must get hot water at no more than 50°C, so the plumber fits a tempering valve.
  • An isolation valve and an expansion control valve may be needed, depending on your water pressure and local rules.
  • It produces condensate water while it runs: plan where it drains.
  • Outdoors it needs 500 mm clear either side of the air grille. Indoors it needs a room of at least 13 cubic metres, which cools a few degrees while it runs.

From the manufacturer's installation documents. Installation must follow them and the rules in your state.

Power220-240 V single phase, plugs into a 10 A outlet. Max current 9.88 A
Size1,903 mm high, 650 mm diameter
Weight117 kg empty, 422 kg full
Hot water outletG 1
Relief valvePTR valve, 850 kPa
ClearanceOutdoors 500 mm either side of the air grille; indoors a room of 13 m³ or more
RefrigerantR290, 152 g, sealed system

Technical data

Capacity300 litres
COP4.21 (EN 16147, A20)
Average heat pump power input0.44-0.45 kW (AS/NZS 5125.1)
Backup element1.5 kW
Max water temperature65°C
Operating range (air)-5 to +43°C (datasheet: -6°C)
Active defrostNo
Climate zones1 to 4 (Stiebel Eltron datasheet)
RefrigerantR290, 152 g
Electrical220-240 V 50 Hz, single phase
Max current9.88 A
Noise47 dB(A) sound pressure at 2 m, free field (EN 12102)
Dimensions1,903 mm high, 650 mm diameter
Weight117 kg empty, 422 kg full

Warranty

Domestic use: 7 years on the cylinder and condenser, 5 years on the sealed refrigeration system and electrical parts, 2 years on other components including sensors and valves, 1 year on the relief valve. Stiebel Eltron requires installation by a licensed tradesperson and a certificate of compliance for a claim.

How warranty claims work

Documents

FAQ

Questions about the SHP-O 300 Plus

SHP-O 300 Plus or SHP-O 301 Premium?

Same tank and the same efficiency rating. The Premium adds active defrost, keeps the heat pump running down to -10°C instead of -5°C, and heats to 75°C instead of 65°C. Choose it for cold winters, or to store more solar energy as heat.

How many people does 300 litres suit?

As a general guide, 4 to 6 people. A smaller household that runs long showers or fills a big bath may also want 300 litres.

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