Gas Hot Water Systems

Instant, Efficient Hot Water sorted by the Specialists

Gas Hot Water System (califont) -installed on side of house (rough trowel finish), with small evergreen next to it.
Hot Water Shop shower guy on orange background - mood is singing into shower head, probably because he went to Hot Water Shop

Looking for a powerful, energy-efficient way to enjoy endless hot water? A gas hot water system could be the perfect fit for your home.

Whether you're replacing existing or upgrading from electric or renovating, Hot Water Shop specialises in full-service gas hot water installations in Christchurch, with expert advice, trusted brands, and seamless setup from start to finish.

Benefits of Installing a Gas Hot Water System

01

Endless Hot Water on Demand

Gas systems heat water as you need it – no running out halfway through your shower.

02

Energy Efficiency

Only heats when in use – no standby energy loss like with electric cylinders.

03

Compact and Wall-Mounted

Most gas units are installed outdoors, freeing up valuable space inside your home.

04

No Recovery Time

No waiting around for a hot water cylinder to reheat.

How Gas Hot Water Installation Works

Our team of licensed gasfitters and plumbers handles the entire process, ensuring a smooth, compliant, and tidy installation.
1

Free Initial Consultation and Site Inspection

We assess your property and talk through your household’s hot water needs, existing system, and gas supply.

2

System Selection

We'll recommend the best gas water heating unit for your lifestyle, home layout, and budget.

3

Installation Day

We mount the new system (often externally), connect plumbing and gas lines, install flues or vents where required, and thoroughly test everything for safety and performance.

4

Handover and Support

You get a walkthrough on how your new system works and warranty info. We're always here if you need backup.

We Supply Trusted, Reliable Brands

We only stock and install tried-and-true gas systems built for NZ conditions. All units we install are backed by manufacturer warranties and supported by our expert team.
Rinnai Gas Hot Water Califont on side of house next to estuary

Rinnai Infinity Range

A household favourite. Continuous flow units with advanced digital controls. Available in indoor and outdoor models.

Dux Gas Hot Water Califont on brick wall of house

Dux Gas Systems

Reliable, Australian-made long-life performance with a great range of califont sizes.

Rheem Gas Hot Water Califont on wall of beach house

Rheem Continuous Flow

Ideal for replacing older gas units or upgrading from electric, perfect for all home sizes.

Ready to go Gas? Let’s Make It Easy.

Contact Hot Water Shop today for a free quote for your gas hot water installation. Whether you need endless hot showers, faster performance, or a space-saving upgrade, we’ll help you choose the perfect system — and get it professionally installed, fast.

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Certified gasfitters and plumbers

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Competitive pricing

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Top NZ brands

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Ongoing support

Hot Water Shop shower man

Leading brands we work with

We only install reputable hot water brands we know and trust. If we don’t have it, we can get it.

Hot Water Shop works with Rheem productsHot Water Shop works with Rinnai productsDux (logo) products supplied by Hot Water ShopHot Water Shop works with Haier productsHot Water Shop works with Thermann productsIce Solar (logo) products supplied by Hot Water ShopHot Water Shop works with Econergy productsEcospring (logo) products supplied by Hot Water ShopStiebel-Eltron (logo) products supplied by Hot Water ShopApex logo - Apex products supplied by Hot Water ShopSuperheat logo - Superheat products supplied by Hot Water ShopPeter Cox (logo) products supplied by Hot Water Shop