Repairs, same-day replacements and heat pump cylinder upgrades across Hamilton and the Waikato region.
Valued at $249. Free for 10 eligible homeowners this month
Cylinder playing up, or thinking about a heat pump cylinder upgrade? Tell us what is happening, your suburb and how soon you need help. Our Hamilton team will contact you to book your assessment. No cost, no obligation.
If repairs or a replacement are needed, we will explain the options and quote for the work before you decide to proceed. Urgent availability varies; call us if you need help today.
Prefer to call? 022 453 5783
Heat pump cylinders
Water heating is around 30% of a typical NZ power bill, and an old electric cylinder is usually the biggest single user of power in the house. A heat pump cylinder pulls heat from the outside air to heat your water, using up to 70% less power than a standard electric cylinder for the same hot water.*
Not sure if a heat pump cylinder suits your home? Book a free on-site assessment, valued at $249. We look at your current cylinder, pressure and the space available, give you a straight answer and a written quote before you decide anything. Every install is backed by our workmanship guarantee.
*Heat pump cylinder compared with a standard electric cylinder. EECA estimates water heating at around 30% of a typical NZ power bill. Savings depend on household hot water use and energy prices.
A reliable hot water supply is essential for every Hamilton home and business. At Plumbway Ltd, we specialise in the supply, installation, repair and replacement of hot water cylinders throughout Hamilton, Cambridge, Te Awamutu, Huntly and the wider Waikato region. Whether your existing cylinder is leaking, losing pressure, or simply past its lifespan, our certified plumbers will diagnose the issue quickly and recommend the most cost-effective solution to get your hot water flowing again.
We work with all major hot water system types and brands, including Rheem, Rinnai, Dux, Bosch and HJ Cooper. From traditional electric hot water cylinders and mains-pressure systems to heat pump cylinders, gas califonts, continuous-flow gas units and solar-assisted hot water, we can advise on the best option for your household size, budget and energy goals. Upgrading to a modern, energy-efficient system can significantly reduce your power bills while providing a more consistent supply of hot water for your family.
Every hot water cylinder installation carried out by Plumbway Ltd is completed to New Zealand Building Code standards and fully compliant with local council regulations. We handle the complete process from removing your old unit through to installing, commissioning and testing your new system. Our team ensures all safety valves, tempering valves and pipe connections meet current compliance requirements, giving you total peace of mind.
Lost hot water unexpectedly? We understand how disruptive it can be to go without hot water, especially during Waikato’s cooler months. Plumbway Ltd offers emergency hot water cylinder replacements with fast response times across Hamilton and surrounding areas. We carry a range of popular cylinder sizes on hand so we can often complete a same-day replacement, getting your household back to normal as quickly as possible. Call us on 022 453 5783 or email hello@plumbway.co.nz to arrange a quote.
Most electric hot water cylinders last 10–15 years with regular maintenance. Gas hot water cylinders and continuous flow units typically last 15–20 years. Coastal properties (like those in Raglan) may experience shorter lifespans due to salt air corrosion on elements and fittings. If your cylinder is over 10 years old and showing signs of rust, leaks, or inconsistent heating, it's worth having it assessed.
Cylinder sizing depends on the number of people in your household and your usage habits. As a rough guide: 1–2 people need approximately 135–180 litres; 3–4 people need 180–250 litres; 5+ people need 250–300+ litres. A household with a bath, multiple showers or high hot water demand should size up. We'll assess your situation and recommend the right size before installation.
If your cylinder is leaking from the tank body (not just a fitting), it generally cannot be repaired and must be replaced — a leaking tank is a sign the internal lining has failed. If the issue is a faulty element, thermostat or pressure relief valve, repair is often cost-effective. If the cylinder is over 12–15 years old, replacement is usually the better long-term value. We'll give you an honest assessment.
Yes. We can supply and install your new hot water cylinder — we work with trusted brands including Rheem, Rinnai and Wetback systems. Supplying through us means the cylinder is correctly specified for your property, properly installed and covered by both the manufacturer warranty and our workmanship guarantee.
A heat pump hot water cylinder draws heat from the outside air to heat the water in the tank, instead of heating it directly with an electric element. EECA estimates water heating is around 30% of a typical NZ power bill, and a heat pump cylinder can use up to 70% less power than a standard electric cylinder to heat the same water. Actual savings depend on your household's hot water use. We supply and install heat pump cylinders across Hamilton and the Waikato and offer a free on-site assessment to confirm whether one suits your home.
A continuous flow system heats water on demand as it flows through the unit, rather than storing hot water in a tank. Benefits include never running out of hot water and lower standby heat loss. Rinnai is a leading brand in the NZ market. They require a gas connection (natural gas or LPG) and are well-suited to households with high or variable hot water demand. We install and service both storage cylinder and continuous flow systems.
City-specific information for our highest-demand area:
Same-day cylinder replacement across every Hamilton suburb. Electric, gas storage and continuous flow.
View Hamilton hot water cylinder →Contact us for a free assessment and quote on cylinder repairs, replacements or a heat pump cylinder upgrade.
