Hot water guides
Plain-English, cited to official scheme information, with a last-reviewed date on every page. No sales pitch — just what you need before getting quotes.
Heat pump vs gas hot water
Which is cheaper to run once you count the daily gas supply charge, why the rebates only go one way, and when replacing a working gas system doesn't pay.
Read the guide →What size heat pump hot water system do I need?
The 50-litres-per-person rule, tank sizes by household, why the smallest tank that fits your home is usually the cheapest to run — and why copying your old electric tank over-buys.
Read the guide →Are heat pump hot water systems noisy?
About 37–50 dB up close — plus the NSW and Victorian rules that name this exact equipment, set night-time hours, and make running it overnight the most common mistake.
Read the guide →Do heat pump hot water systems work in the cold?
Canberra, Hobart, Ballarat and Bendigo winters — why cold postcodes usually earn a BIGGER federal rebate, the zone 5 column to check, and the electric booster that eats the savings.
Read the guide →Heat pump vs solar hot water
Which is cheaper after STCs and state rebates, which runs cheaper, and which suits your roof and climate — compared honestly for 2026.
Read the guide →Every hot water rebate in Australia, 2026
VEU + Solar Victoria stacking, NSW's upfront ESS discounts, SA's REPS, Queensland's closed Climate Smart scheme and federal STCs — state by state.
Read the guide →The federal STC rebate, explained straight
The one incentive that applies everywhere — what STCs are worth, how they come off your quote, why the amount varies by zone, and how they wind down to 2030.
Read the guide →Are heat pump hot water systems worth it?
vs electric, vs gas, winter performance, noise, the solar PV cheat code — and the cases where a heat pump isn't the right call.
Read the guide →What a heat pump hot water system really costs
Typical $2,500–$5,500 installed before incentives, what moves your quote, and how the rebates change the maths.
Read the guide →Heat pump hot water running costs, honestly
Roughly $100–$250 a year on the grid, near zero on solar — versus electric and gas, plus the levers that cut the bill and real payback times.
Read the guide →Your state's rebate, in detail:
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