❓ How do I know if my hot water cylinder needs replacing?

There are a few clear signs that your hot water cylinder may be on its way out:

• Leaking water around the cylinder or in the hot water cupboard

• Inconsistent hot water or running out faster than usual

• Visible rust or corrosion on the tank or pipework

• Strange noises like popping or rumbling coming from the cylinder

• Low hot water pressure, especially when compared to your cold taps

• Check for the date of manufacture - You’ll find the manufacturing date on the label. If your cylinder is close to - or over - 20 years old, it’s likely time for a replacement. Being proactive can help you avoid the hassle and cost of a burst cylinder.

If you're noticing any of these, it's best to send us some photos - we’ll diagnose the issue and let you know if a repair or replacement is needed.

❓ What should I do if my hot water cylinder is leaking?

If you spot water pooling around your hot water cylinder or see signs of moisture or rust, it’s best to act quickly. A leak could mean anything from a faulty valve to a ruptured cylinder. Either way, shut off the water supply to the cylinder if you can, and send us photos. We’ll let you know whether a repair is possible or if a replacement is the safest option.

❓What’s the difference between low pressure and mains pressure?
Low pressure systems provide a gentler flow and are common in older homes. Mains pressure delivers stronger water flow and better shower performance. We can assess your system and let you know if upgrading is worthwhile.

❓ Why is my hot water pressure so low?

Low hot water pressure is often caused by an older low pressure hot water cylinder, which was standard in many New Zealand homes. These systems simply can’t match the pressure of modern mains systems. Other causes could include partially blocked valves, aging pipework, or a faulty pressure-reducing valve. If you’re experiencing low pressure from your hot taps or shower, it could be time for an upgrade to mains pressure.

❓ Are there any maintenance tips to prolong the life of my hot water cylinder?

Yes! A few simple steps can help extend the life of your cylinder and keep it running efficiently:

• Regularly check for leaks around the cylinder and pipework

• Make sure the area around the cylinder is dry and well-ventilated

• Consider wrapping older cylinders with an insulation blanket to reduce heat loss

• Regularly check the relief drain from the Hot Water Cylinder is not continually leaking

If your system is showing its age, regular check-ups and early intervention can help you avoid unexpected breakdowns and extend its lifespan.

❓Can I upgrade from low pressure to mains pressure?

Yes! We specialise in mains pressure upgrades. You’ll enjoy better flow at all taps, improved shower pressure, and a more modern, efficient system.

❓ Can I install a hot water cylinder outside?

Yes, we install outdoor hot water cylinders, which are a great space-saving option - especially if your indoor hot water cupboard is cramped or you’re renovating. Outdoor units are weatherproofed and securely plumbed to meet all compliance standards. We can advise on whether this option suits your property.

❓ What is the lifespan of a hot water cylinder?

The average lifespan of an electric hot water cylinder in New Zealand is typically 10 to 20 years, depending on the model, installation quality, and water quality in your area. Older low-pressure cylinders tend to have shorter lifespans, especially if they’re not well-maintained or insulated. If your cylinder is over 15 years old, it’s a good idea to start keeping a close eye on its performance - or consider upgrading to a more efficient model.

❓Do I need to replace my cylinder if it’s leaking?

Not always. Sometimes it’s just a faulty valve or fitting. Send us a few clear photos of your setup and we’ll diagnose the issue and provide a fixed-price quote for repair or replacement.

❓Why is hot water coming out of the overflow pipe?

This is often caused by a faulty pressure relief valve or expansion valve. While some overflow is normal during heating, continuous dripping or large volumes could indicate a problem. We can replace faulty valves or check for underlying issues.

❓Why do I suddenly have no hot water?

A sudden loss of hot water can be due to a failed thermostat, element, power supply issue, or cylinder fault. Dean holds a Limited Electrical Licence, so we can safely test and replace components without needing a separate electrician.

❓ Why is my hot water making strange noises?

Popping, hissing, or banging sounds from your hot water cylinder usually indicate sediment buildup on the element inside the tank. This can reduce heating efficiency and shorten the lifespan of your cylinder. It’s often a sign that maintenance or a replacement is due, especially if your unit is older or hasn’t been serviced in years.