New Zealand's Specialist Hot Water Heat Pump Installer

For the Wellington, Hutt Valley, Wairarapa, Kapiti and Horowhenua regions

0800 770 030
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Official logo for the Home & Garden Show, an event offering the best ideas for home improvement and garden inspiration in New Zealand.

Most Popular Intergrated System

  • Rinnai HydraHeat - 275 & 340 litre available
  • Fast recovery - 89 l/hr
  • High efficiency - COP 4.7
  • R290 Refrigerant
  • Recommended for medium to large households
  • Designed and manufactured in New Zealand

Supplied and installed from $9,400 inc GST

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Most popular for smaller households

  • Carrier Blue - 190 & 300 litre available
  • Excellent recovery - 52 l/hr
  • High efficiency - COP 4.2
  • R290 Refrigerant
  • Recommended for small to medium households

Supplied and installed from $7,250 inc GST

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Most popular split system

  • Panasonic Hot Water Heat Pump - internal or external cylinder installation
  • Fast recovery - 83 l/hr
  • High efficiency - COP 5.2
  • Whisper quiet
  • R744 (CO2) refrigerant
  • Recommended for medium to large households - or where external space is at a premium

Supplied and installed from $10,995 inc GST (with a 275L HWC)

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WELLINGTON HOME & GARDEN SHOW

  • 5 September, 2025 to 7 September, 2025
  • Sky Stadium, Wellington

Visit A2W at the Wellington Home & Garden Show!

Here’s why you should stop by:

  • Go in the draw to Win a Rinnai HydraHeat
    (fully installed – worth up to $10,000)
  • Learn about energy-efficient hot water heat pumps
  • Local expertise, real value
  • No pressure – just good chats & good vibes
Buy Tickets
Contact Us To Find More!
Pie-chart of the average household energy use in New Zealand

Hot Water Heat Pumps – Efficient, Cost-Effective, and Future-Proof

Did you know that heating water makes up about a third of your power bill? If you're looking for a way to cut down on energy costs without sacrificing comfort, a hot water heat pump is the answer.
These systems use advanced technology to heat water up to 70% more efficiently than traditional electric or gas water heaters—meaning you’ll save hundreds of dollars every year on power.

With energy prices on the rise, switching to a heat pump hot water system is a smart financial move that will reduce your monthly bills and deliver long-term savings. Plus, with a lifespan of 15+ years, you’ll enjoy reliable, cost-effective hot water for years to come.

At A2W Hot Water Heat Pumps, we specialize in installing high-quality, energy-efficient systems that keep your water hot while keeping your power costs low. Keep reading to learn how hot water heat pumps work, how much you can save, and why they’re the best choice for your home.
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How Much Money Can You Save?

Since heating water makes up about a third of your household’s power bill, upgrading to a hot water heat pump is one of the most effective ways to cut energy costs. These systems are designed to use significantly less electricity than traditional electric or gas water heaters, which translates to major savings over time.
LEARN MORE ABOUT SAVINGS

Here’s Why
Homeowners Trust Us

01

Expert Knowledge
& Experience

We are hot water heat pump specialists, not general plumbers who install them on the side. Our team has extensive experience in heat pump technology, ensuring every installation is done right the first time.

02

Energy Savings &
Lower Power Bills

Hot water accounts for a significant portion of your household energy use. Our high-efficiency heat pumps are designed to cut your water heating costs by up to 70%, giving you more savings year after year.

03

High-Quality, Future-Proof Systems

At A2W, we only install top-tier, energy-efficient heat pumps with the latest refrigerant technology. We prioritize R290 and CO₂ systems, which offer superior performance, ultra-low GWP, and long-term sustainability—future-proofing your investment.

04

Transparent,
Fixed-Pricing Quotes

No hidden costs, no surprises. We provide accurate estimates upfront, followed by a fixed-price quote, so you know exactly what you’re paying before we start the job.

05

Hassle-Free
Installation Process

We make the transition to a heat pump simple and stress-free. From expert advice and site assessments to professional installation and aftercare, we handle everything—so you don’t have to.

06

Trusted & Highly
Rated

Our customers love our exceptional service, honest advice, and quality workmanship. We take pride in our reputation and go the extra mile to ensure you’re 100% satisfied with your new hot water system.

07

Local, Customer-Focused Service

As a New Zealand-owned business, we genuinely care about our customers. We’re not just here to sell you a system - we’re here to help you make the best choice for your home, your budget, and the environment.

Don’t Just Take Our Word For It

Highly recommend A2W plumbing. We recently had our water heater replaced. Their communication throughout was excellent and their quality of work is top notch.
Rhona O'Neill

Don’t Just Take Our Word For It

Just the best team to deal with. Nothing is a problem and they come so fast. We also just had a new hot water heat pump installed. It was so easy and works so well. Highly recommend to anyone.
Tash Styles

Don’t Just Take Our Word For It

A2W were great to deal with - very knowledgeable, gave us good advice about our transition away from using gas, were flexible when we needed to adjust timing for the work, turned up when they said they would and, above all, did an excellent job!
Helen Cruse

Don’t Just Take Our Word For It

The team at A2W made the installation of my new heat pump system so effortless. Communication was excellent and they left the house really tidy at the end of every day. The system is up and running perfectly. Very happy with this service and the friendliness of the team. Highly recommend!
Emily Wakelin

Don’t Just Take Our Word For It

A2W were excellent. They visited my house twice to check different things and gave me an honest appraisal. Their prices were competitive with anyone else and they were an absolute pleasure to deal with. I highly recommend them.
Victoria Smith

Don’t Just Take Our Word For It

Awesome service. We wanted to upgrade from a header tank system and super happy we went with A2W. It was more affordable than other companies we looked at and fantastic service.
Tessa Prebble

Get In Touch

Please fill in the details below for a free consultation.
Contact Form

Online Estimate

Terms & Conditions:

  1. Please note that this is a “site unseen” estimate only.   
  2. If you accept the estimate, we will arrange a site visit and confirm final pricing in a written quote.
  3. The estimate does not constitute an agreement to provide goods or services at the estimated price.

How do you heat your water at the moment?

Do you use mains gas (meter) or LPG (bottled)?

Is your hot water cylinder:

How do I tell if I have low pressure or mains pressure hot water at present?  

Have a look at your hot water cylinder, it will normally tell you on it if it is mains or low pressure.  If not, if the hot water from your tap comes out as fast as the cold water you have mains pressure.  If the hot water is slow compared to the cold water, you likely have low pressure.

What is the capacity of your current cylinder?

If you are unsure, have a look at your cylinder, it will normally tell you the capacity on it.

How old is your water heating system?

Tell us about your household:

The number people that normally reside in your house is:

How many bathrooms do you have? (with showers or baths, don’t include toilet rooms).

Tell us about your house:

Access to my house is:

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Get in touch

Send us a quick message and we will get back to you as soon as possible.
Contact Form

Online Estimate

Terms & Conditions:

  1. Please note that this is a “site unseen” estimate only.   
  2. If you accept the estimate, we will arrange a site visit and confirm final pricing in a written quote.
  3. The estimate does not constitute an agreement to provide goods or services at the estimated price.

How do you heat your water at the moment?

Do you use mains gas (meter) or LPG (bottled)?

Is your hot water cylinder:

How do I tell if I have low pressure or mains pressure hot water at present?  

Have a look at your hot water cylinder, it will normally tell you on it if it is mains or low pressure.  If not, if the hot water from your tap comes out as fast as the cold water you have mains pressure.  If the hot water is slow compared to the cold water, you likely have low pressure.

What is the capacity of your current cylinder?

If you are unsure, have a look at your cylinder, it will normally tell you the capacity on it.

How old is your water heating system?

Tell us about your household:

The number people that normally reside in your house is:

How many bathrooms do you have? (with showers or baths, don’t include toilet rooms).

Tell us about your house:

Access to my house is:

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