Are they noisy?
Most units run at 37–50 dB, about the same as a modern fridge, and only while heating. Place them away from bedroom windows and boundaries where you can.
Do they work in winter?
Yes. Quality units heat water efficiently down to around -5°C, and CO₂ systems to about -10°C. Below that a small electric booster covers the gap.
How much does one cost installed?
Typically $1,500–$3,500 after federal STCs and any state rebate, depending on brand, tank size and site conditions.
How long does the install take?
A straight swap from an existing electric or gas storage system usually takes 3–4 hours.
How long do they last?
Expect 12–15 years, with a 10-year tank warranty and 5–6 years on the compressor from most reputable brands.
Can I run it on solar?
Absolutely — that's the ideal setup. A timer or smart controller schedules heating between roughly 10am and 3pm so it soaks up your export.
Will it suit an apartment?
Sometimes. You need outdoor air access, a condensate drain and body corporate approval. A split system is usually the answer.
Is my information sold?
No. We pass your details to up to three matched installers and nobody else.