Are made in the UK by Grant and are recognised as one of the best central heating diesel boilers in the world.

Grant produces the most efficient boilers currently available on the market. Independent testing laboratory SEDBUK tests all boilers and Grant has a large majority of boilers on their top 100 list. Most boilers run at 70-80% efficiency, but Grant's new generation condensing boilers deliver efficiency levels of up to 97% and all feature the ‘award winning’ unique Grant Vortex stainless steel condensing heat exchanger, and turbulator baffle system.

We offer both indoor and outdoor models with a variety of output options to suit the size/scale of your home. You can also choose between a standard or combination boiler, which in addition to heating your home, also provides instant domestic hot water.

Features & Benefits at a glance

  • Can be used to heat your swimming pool
  • Front access for ease of service
  • Whisper quiet operation
  • A remote fuel tank is required which must be accessible to mobile fuel delivery units
Details
  • Category
    Boilers
  • Range
    BOILERS
Our Takanini showroom is open Monday to Friday, 8-4pm so feel free to visit or, use the enquiry form below to book a consultation outside of these hours.
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More from Warm NZ Central Heating

By offering a full range of quality and innovative heating systems we cover all your central heating needs. Be they, under floor heating, hot water radiators, gas or diesel boilers, heat pumps or carbon-neutral wood fires. From your initial contact with us we will work with you to understand your heating requirements.

Ensuring that your home meets the healthy homes standard.

We install as well as sell heating solutions. Therefore, if your heating installer buys our products we will advise on the best way to install our products.

Warm NZ Limited came about from our sister company Plumbcraft, constantly trying to source premium central heating products for its customers over the last 15 years.

After building strong relationships with New Zealand’s premium suppliers the opportunity arose to purchase the central heating division of F L Bone Limited.

Since our conception in 2012, we have complimented and added to the offer with both users and installers in mind.

We value feedback from our customers and installers throughout New Zealand, with an aim to continue introducing improved and energy-efficient heating products to the New Zealand market.

Grant Vortex Pro Kitchen/Utility (Indoor Diesel Boiler)Warm NZ Central Heating