Hot water cylinder troubles? Here are your first signs...
❓ Sudden hot or cold bursts? Could be a faulty thermostat or failing element.
❓ Low or irregular water pressure? Older low-pressure systems struggle to keep up, meaning you're only getting a fraction of your shower experience of the new mains pressure systems.
❓ Any signs of leaks? Is there any water or dampness around the bottom of the cylinder? Brown, murky, or rusty-colored water? Metallic taste? These are your first signs of internal corrosion.
❓ Brown, murky, or rusty-colored water? Metallic taste? These are your first signs of internal corrosion, meaning your hot water cylinder might be at the end of its life.
❓ Higher power bill for no apparent reason? Hot water heating accounts for 30-40% of Kiwi's power bills! If you have an older, inefficient, or even a damaged hot water heating system, we might be able to help you save some cash without having to replace your system.
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Frequently Asked Questions About Hot Water Cylinders
How much does it cost to replace a hot water cylinder in NZ? A full replacement including installation typically costs between $2,500 – $4,500 depending on the system type (electric, gas, mains pressure, size etc). Upgrading to an energy-efficient model can help save you hundreds on power bills over time.
What size/capacity hot water cylinder do I need? Small home (1-2 people) – 135L to 180L Family home (3-4 people) – 250L to 300L Large household (5+ people) – 300L+ or gas continuous flow for unlimited hot water Showers are the biggest user of hot water. Most households can expect to use 10L of water per minute in the shower - so for an average family of 4, you can easily be using 300L+ of hot water a day! If you’re constantly running out of hot water, it may be time to size up or switch to gas.
How much will a new hot water system save me? Many Kiwis are surprised to find out that hot water heating accounts for 30-40% of their power bill! An old, inefficient, or damaged hot water heating system can be costing you money without you even knowing it. A new and efficient system can be one of the greatest long-term investments you can make within your home. Realistically, you could save 30-50% on your hot water heating costs by upgrading your hot water cylinder. Breaking down your potential savings... Hot water heating accounts for 30-40% of the average NZ home’s power bill Let’s assume your household's monthly power bill is $250 That means your hot water heating costs around $1000 per year If your new hot water system helps increase your heating efficiency by 40%, that could save you $400 a year! A new hot water cylinder system should last 20 years. And if energy costs keep rising, your investment only saves you more in the long run!
Why are hot water cylinders often installed outside? Modern hot water systems are really well insulated which has made moving your hot water cylinder outside a great idea for smaller households that could do with that extra cupboard space. Not all properties are suited for this however.
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