Hot water cylinder replacement in Christchurch, made simple
Fully installed pricing from $4,025 incl. GST. Choose your system, choose your install date. Backed by Butterfield Bathrooms.
TWO SYSTEMS. ONE PROCESS
Two systems. One straightforward process.
Most Christchurch homes are replacing or upgrading from an electric cylinder. We make it simple. Choose the system that suits your home, book your install date, we handle the rest.
Mains pressure replacement
From $4,025 incl. GST · fully installed
A straightforward replacement for homes where a standard cylinder is the right fit. Lower upfront cost and a simpler swap-out path.
Best for:
Homeowners who want a straightforward, lower-cost replacement done quickly. A reliable choice for most Christchurch homes.
Heat pump upgrade
From $6,670 incl. GST · fully installed
A more efficient long-term option. Up to 77% more energy efficient than an electric cylinder, backed by a strong 10-year warranty. Qualifies for all major bank green loans.
Best for:
Homeowners who want lower power bills and the long-term value of a more efficient system. Pays itself back through reduced running costs.
Is a heat pump worth it?
A Carrier Blue heat pump uses up to 75% less power than a standard electric cylinder. For most Christchurch homes, that's around $1,000 in power savings every year.
Power Savings
Standard electric cylinder
Approx. $ 1,350 per year
Carrier Blue heat Pump
Approx. $ 340 per year
You keep approximately
Approx. $ 1,000 every year
Based on a 3 to 5 person household and the current North Canterbury electricity rate of $0.339 per kWh (Powerswitch, July 2025).
Green loans cover the upgrade
Westpac 0% for 5 years. ANZ, ASB, BNZ 1% for 3 years. On a $7,475 install over 5 years at 0%, your loan repayment is around $125 per month and your power savings are around $85 per month. After 5 years the loan is paid and the savings continue for the life of the system.
Backed by warranty
10 years total cover. 5 years parts and labour, plus an additional 5 years on parts. One of the strongest warranties on a heat pump hot water system in New Zealand.
Clear starting prices from the start
You should know what your replacement will cost before you commit to anything. Here's where standard installs start.
For standard installs, this is the price we aim to honour. If we identify anything outside a standard install, we’ll let you know before work begins.
HEAT PUMP UPGRADE
$6,670
incl. GST
Carrier Blue heat pump system, fully installed. Standard install includes removal of old cylinder, external installation, new electrical circuit and Code of Compliance certificate.
MAINS PRESSURE REPLACMENT
$4,025
incl. GST
Dux mains pressure cylinder, fully installed. Standard install includes removal of old cylinder, plumbing reconnection, electrical reconnection and Code of Compliance certificate.
No surprises on the day
For standard installs, the price shown is the price we aim to honour. The vast majority of Christchurch homes fit a standard install.
What’s included as standard
Removal and disposal of existing cylinder (where possible)
New system supplied and installed
Standard plumbing reconnections
Compliant electrical reconnection and Code of Compliance certificate
Manufacturer’s warranty
Tidy-up before we leave
What could change the price
Long pipe runs or restricted access
Switchboard upgrade or non-standard electrical work
Asbestos or remedial work in the cylinder area
Pre-existing plumbing issues that need addressing
If anything outside a standard install is identified, we'll explain it clearly and confirm any change with you before work begins.
How it works
From here to a confirmed install in four steps.
01
Choose your system
Use the assessment or check our pricing directly. Fully installed pricing for every option.
02
Confirm or book
Send us your details and we'll be in touch. Or book your install date direct.
03
Pay your deposit
48 hours to pay the 50% deposit. This locks in your slot.
04
Installation
We complete your replacement or upgrade on the day you've booked.
Backed by Butterfield Bathrooms
Butterfield Bathrooms has been working in Christchurch homes for years, handling everything from full bathroom renovations to hot water system upgrades. Butterfield Hot Water Systems is a focused service built on that experience.
When you book through us, you get the same team, the same systems, and the same standards. Just for hot water.
Local team
Christchurch-based, working in Christchurch homes every week.
Established business
The Butterfield team has the systems, the trades, and the experience to do this properly.
Real experience
A vast number of cylinder replacements and heat pump installs across Canterbury.
Frequently asked questions
A few of the common questions homeowners ask before replacing or upgrading their hot water system.
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That depends on both household size and how hot water is used across the day. The assessment helps point you toward the likely size for your home.
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For many homes, yes. Lower running costs, a strong warranty, and green loan eligibility make the maths work for most households over 5 to 10 years.
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For standard installs, that is the price we will to honour. If we identify anything outside a standard install, we'll let you know before work begins, not after.
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For most installs, no. We confirm what we need from the details you provide. In the rare case a site visit is needed, we'll arrange one before your install date is confirmed.
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Yes. Butterfield Hot Water Systems is currently focused on greater Christchurch and surrounding areas
Ready to get started?
Check our pricing to see what your replacement or upgrade will cost. Or use the assessment if you're not sure which system suits your home.