7 Reasons Why You Shouldn’t Buy a Heat Pump Hot Water System
7 Reasons to Avoid Heat Pump Hot Water Systems
1. They’re Often Too Small for Aussie Households
One of the biggest issues with heat pump systems is that they’re often undersized. Many companies are just chasing a quick sale instead of making sure the unit actually suits your family’s needs. The result? Not enough hot water, systems that work overtime, and higher energy bills.
Smaller systems heat more frequently, wear out faster, and often rely on their electric backup element to keep up—completely defeating the point of buying an “energy-efficient” system in the first place. Heat pumps do use less energy than traditional electric or gas hot water system, but they also take longer to heat up—so if the unit’s too small, you’ll notice.
Aussie Tip: Always go slightly oversized rather than risk cold showers and a stressed-out unit. Chat to your licensed plumber about your actual hot water usage:
- How many people in the house?
- Do you run multiple appliances off hot water?
- Got a big bath or spa?
2. They Can Be Bloody Noisy
Heat pumps are about as noisy as a modern reverse-cycle air con—not deafening, but not silent either. If the installer chucks it in the same spot as your old hot water system (which might be just outside your bedroom window), you’ll regret it quick smart.
While it’s not a racket, in the middle of the night that gentle hum will start to feel like a chainsaw.
Aussie Tip: Make sure the heat pump is installed away from bedrooms or living areas. Tuck it somewhere it can quietly do its job without waking the household.
3. They Might Not Save You That Much
Quality matters – Cheap, small units will work harder and burn more power.
Location matters – Stick it outside in an open space with good airflow.
Timing matters – You only get one go at the rebate, so don’t waste it on a dud.
Solar integration – Some units can run when your solar is producing power.
Off-peak users beware – If your current electric system is on Off-Peak 1 or 2, you may already be saving more than you think.
Aussie Tip: The savings may not be worth it if your setup is already efficient. Do the maths before jumping in.
4. The Rebates Are a Bit of a Rort
Remember the government’s pink batts and solar hot water schemes back in 2010–2011? Yeah, that mess. Cheap gear, cowboy installers, and loads of wasted taxpayer dollars.
Unfortunately, history’s repeating itself. These days, anyone with a ladder and a cheap import can get into the game, all backed by rebates funded by your tax dollars. That means dodgy systems getting thrown into Aussie homes without much accountability.
Aussie Tip:
- Buy Aussie – Support local products and businesses.
- Check credentials – Make sure your installer has both plumbing and electrical licences.
- Don’t chase the cheapest option – You’ll only pay more later when it breaks.
5. They Used to Break Down All the Time
Back in the early 2010s, when heat pump rebates first kicked off, there was a flood of low-quality units rushed out the door to meet demand. Unsurprisingly, a lot of them didn’t last long.
The good news? Aussie manufacturers have since lifted their game. The newer systems on the market are much better quality and built to last—but only if you’re buying the good ones.
Aussie Tip: Stick with proven brands that have stood the test of time, not newcomers chasing a quick sale.
6. The Rebate Paperwork Is a Nightmare
Yep, it’s paperwork galore. It almost feels like they made it hard on purpose—hoping you’ll just give up and forfeit the cash.
But a good licensed installer will handle it for you. They’ll even knock the rebate off the upfront price so you don’t have to wait around for a refund.
Aussie Tip: Choose a company that takes care of the rebate for you and deducts it at the point of sale—easy as.
7. They’re Expensive Upfront
Top-of-the-line heat pump systems can run you over $6,000. That’s a lot of coin for any household. While I don’t sell the cheapest stuff out there, I only recommend units that are reliable, built for Aussie conditions, and won’t leave you without hot water when you need it most.
Aussie Tip: A good-quality system is an investment. It might cost a bit more, but it’ll save you headaches—and money—down the track.
Still Thinking About a Heat Pump?
If you’re not 100% sure a heat pump is right for you, you’re not alone. They’re not for everyone—and they’re definitely not a one-size-fits-all solution.
Want tailored advice on what system will actually work for your home? Fill in the form below and let’s have a proper chat.
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