Heat Pump · Solar Integration · Blakehurst, Sydney

Blakehurst Solar-Matched Heat Pump Installation

Paired the right-sized heat pump with existing rooftop solar. Shaded pool, nine-month swim season, running largely on free electricity.
Client
Residential
Style
New Installation
service
Pool Heat Pump Installation
About the Project

This one came down to a simple brief: the client had a pool they weren't using.

It sits on the south side of the house, gets limited direct sun through most of the year, and by April it’s too cold to swim. They wanted it to be part of the outdoor entertaining area — not just something they look at from the back door.

They’d already invested in a rooftop solar system, a decent-sized setup that was sitting mostly idle during the day. The opportunity was obvious. Pair the pool with a heat pump that runs on that free electricity, and you change when — and how often — the pool gets used.

After a site visit, we assessed the pool volume, the shade situation, and how the solar output tracked across the day. The Austek Enviro was the right fit: properly sized for the pool, quiet enough for a backyard entertaining setup, and efficient enough to run largely off the solar during peak generation hours.

The goal was a nine-month swim season. We hit it.

Challenges & Solutions

The main challenge was heat loss.

A shaded pool loses temperature faster than one that gets direct sun, so sizing the unit correctly was critical. Too small and it would run constantly and still struggle to hold temperature — especially overnight in the shoulder months.

The second piece was making the most of the existing solar. Running the heat pump during the day maximises what the panels are already generating and keeps the unit off the grid during peak tariff periods. That meant setting the timer properly and walking the client through how to get the most out of the setup day-to-day.

  • Pool sits on the south side of the house with minimal direct sunlight year-round
  • Above-average heat loss rate required careful unit sizing — not just pool volume
  • Heat pump draw needed to be matched to the solar system’s peak generation window
  • Timer configured to run during daylight hours to minimise grid reliance

Once those two problems were solved — sizing and solar scheduling — everything else was straightforward. The Austek Enviro was installed in a single day, commissioned on-site, and the client had a warm pool within 48 hours.

Pool heat pump installation in Mortdale, Sydney
Outcome

The pool now runs at a comfortable temperature from September through to May — nine months of the year, from spring entertaining season right through to autumn.

Running costs are minimal. For most of the day, the heat pump is drawing from what the solar panels are already generating.

  • Austek Enviro heat pump installed and commissioned in a single day
  • Timer synced to peak solar generation window — minimal grid draw
  • Pool reaches target temperature within 24–48 hours from cold start
  • Swim season extended from roughly 3 months to 9 months per year

The pool that sat cold and unused for most of the year is now the centrepiece of the backyard. That’s the brief delivered.

Ready to extend your swim season?

Free on-site assessment. No obligation. All Sydney suburbs.