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Heat Pump Sizing Guide & Assessment Form - for Pools & Spas

Heat Pump Sizing - Heat Pump Sizing Guides for Pools & Spas -The above tables are to be used as a guide only and using ideal operating conditions. We recommend the largest heat pump you can budget for, as larger heat pumps ensure shorter running periods and are the most cost-effective over the long run. If possible, go at least one size up from the guide's recommendation. Note: Right-click a chart to open in a new window for a larger version.

General Heat Pump Sizing Guides

Heat Pump Sizes When Using a Cover:

Heat Pump Sizes When Not Using a Cover:

Heat Pump Sizing for Spas:

Heat-Up Times for Various kW Outputs:

We cannot be held responsible for undersized heat pump choices.

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Pool / Spa Heat Pump Sizing Assessment

Please complete the form below. We’ll use this information to recommend a properly sized heat pump.

Contact & Address

First Name *

Last Name *

Email *

Company (if applicable)

Street Address *

Suburb *

State *

Postcode * Australian 4-digit postcode

Pool / Spa Dimensions (metres)

Length (m)

Width (m)

Shallow End Depth (m)

Deep End Depth (m)

Site & Usage

Indoor / Outdoor

Usage Type

Wind Exposure

Shading

Does it have an infinity edge?

Targets & Costs

Desired Temperature (°C)

Electricity Cost per kWh (cents) Tip: Check your latest bill. Enter cents per kWh (e.g. 32.5)

Notes

We’ll reply to your email with our recommendation.

Shipping & Pick-Up Info:

We’re fully Australian owned with a real store and ship faster than anyone—not just another drop-shipper.

Enjoy Free Road Shipping on orders over $149 (some bulky or dangerous goods excluded—your cart will show this). Need it fast? Choose Express Post for delivery in 1–5 business days*, or contact us to confirm stock for urgent orders. *T&Cs Apply -> Shipping Policy & Information Here.

Pick-ups are available from our Carrum Downs, VIC store. Please order online first, and we’ll notify you when it’s ready. Our NSW, QLD, and WA warehouses ship orders only.

Warranties & Returns: As an authorised service agent, our process is quick and straightforward. See our Warranty & Returns page for details.

Please also read our Corrosive Water Info to understand what is and isn’t covered by manufacturers when damage is caused by improper water balance.

Parts & Brands

We stock and supply parts from all the major brands: Aeware, AquaFlo, Astralpool, Balboa, CG Air, CMP, Darlly, Davey, Del Ozone, Edgetec, EvoHeat, Fluidra, Gecko, Hurlcon, Jandy, LX, Pentair, Raypak, Rheem, SpaNet, Spa-Quip, Waterco, Waterway, Zodiac—and many more.

Our parts are compatible with popular spa brands including Alpine, Arctic, Artesian, Bullfrog, Caldera, Cyclone, Decina, Dimension One, Fisher, HotSpring, Jacuzzi, Just Spas, Monarch, Oasis, Sapphire, Signature, Sundance, Vortex® and dozens more.

Please note: Images are for illustration only—actual products may vary. Some OEM parts may arrive without packaging or manuals. Where available, manuals are on the product page or provided on request. All parts must be installed by qualified professionals. Electrical and gas work must be carried out by licensed technicians.

About Us:

Heater & Spa Parts has Australia’s largest range of spa spare parts, supplies, and pool heaters from top brands. We're a real store with real stock—not just another drop-shipper.

We're 100% Aussie-owned, with warehouses in VIC, NSW, QLD & WA, and we ship faster than anyone.

As authorised dealers and service agents for major brands, and former employees of leading manufacturers, we know our stuff.

We're proud SPASA and Master Plumbers members, working closely with top manufacturers and distributors.

With over 50,000 parts across 5,000+ product lines, we stock everything from filters, pumps, jets, chemicals, heaters, touchpads, control panels, and more—plus manuals and expert info to help you out.

Technical Support

Please use this Contact Form for technical support questions. Include as much information as possible.