Hot water repairs or replacement
We supply and service a range of hot water systems including
Electric Hot Water Systems, Inside or External Models
Gas Hot Water Systems, Storage or Instantaneous
Heat Pump Hot Water Systems
When you need a new or replacement hot water heater, we provide a range of the best systems from all the leading brands, all expertly installed. We choose our suppliers based on reliability and quality, from trustworthy manufacturers such as Rheem, Rinnai and Dux. We will deliver the new hot water system directly to your home or business and even take the old one away.
Want to understand the different types of hot water cylinders? Take a look at our FAQs below!
Gas water heating
Gas is very efficient at heating hot water and very fast, either with natural Gas, piped from the street or LPG bottles.
Gas storage type hot water cylinder are available for either inside or outside installations, but the more popular method for gas hot water heating is the Instantaneous / Boiler systems, where the water is heated as it is required.
Rinnai Infinity and Rheem Integrity are the leading brands in New Zealand. There are a few rules about where a Gas the unit and the Gas bottles can be located – not too close to opening windows, doors and vents and LPG bottles have an exclusion zone requirement, not near electrical outlets, drains and building openings.
Muir Plumbing, Gas & Drainage Ltd, can advise you of the best solution for your property.
Hot Water Repairs, Replacements or Upgrades FAQ’s
Different types of hot water systems
In New Zealand, we have 2 different types of electric hot water cylinder – Low Pressure and Mains Pressure. A low pressure cylinder can only handle a pressure of 70kPa, where as a Mains Pressure Cylinder can handle over 500kPa – so as you can see, there is a big difference.
There will be a sticker around the top of your cylinder saying what sort of cylinder you have.
Low Pressure questions
Why is my hot water pressure in the shower not very good? – You probably have a Low Pressure Cylinder, this means the hot water pressure is 7 times less than the cold pressure – Might be time to consider an upgrade.
Why is my low pressure hot water cylinder overflowing on the roof or to the drain? – The pressure valves on your cylinder need a service or replacement.
Why has my hot water has gone cold? – The element has burnt out or the thermostat needs replacing
The mains pressure cylinder can handle a pressure over 7 times higher than a low pressure cylinder, and also has pressure control valves, and they get worn out and start discharging more water than they should.
Why are my cylinder overflow pipes dripping or running constantly? – Your valves need a service or replacement.
Why am I seeing leaking from the bottom of the cylinder? – The cylinder has started to leak and needs to be replaced ASAP before it bursts.
How long should a hot water cylinders last? – Installed correctly approx 15- 20 years
Muir Plumbing can replace or upgrade your leaking hot water cylinder or advise of changing to gas if preferred. Hot water cylinder can even be installed outside!
If you have a cylinder over 10 years old, you need a Leak Alarm
The Alarm has a moisture sensor plate and when positioned at the base of a hot water cylinder, the alarm will sound when the first drop of water hits it, giving you time to call a plumber and not having to deal with wet carpet, rotting floorboards and mouldy Gib board.
Call us for an inexpensive solution to prevent expensive water damage to your property.
Modern taps have rubber pipes that can have a life of only 10 years or so. The Leak alarm is great for detecting leaks in kitchen cupboards, in vanities before your cabinetry is damaged.
Washing machine hoses often leak and the Leak Alarm when positioned behind a washing machine will detect the moisture and alert you before damage occurs. Only $20 installed (when we are already working on your property).