Gas to Hot Water Heat Pump Conversion Auckland

Come Off Town Gas and Start Saving

4.9 from 165 reviews

Gas prices in New Zealand are rising, and the fixed daily line charges alone can add up to a significant amount each year, whether you use the gas or not. More Auckland homeowners are making the switch from gas hot water to electric hot water heat pumps, and Citywide Plumbing & Pumps handles the gas side of the conversion from start to finish.

We remove your gas hot water system, convert or replace your kitchen hob, disconnect the gas supply, and issue all the required compliance certificates.

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Why Are Homeowners Switching Off Gas?

The shift from gas to electric heat pump hot water is picking up across Auckland, and it’s largely driven by cost:

Rising gas line charges – Fixed daily charges for being connected to the gas network have increased significantly. Many households are paying a substantial monthly fee just for the connection, before any gas is used.
Heat pumps are cheaper to run – A hot water heat pump uses around a third of the energy of a traditional electric cylinder and is significantly cheaper to run than gas. The savings on running costs plus eliminating the gas line charges can add up quickly.
No more gas bottles – For LPG users, switching to a heat pump means no more bottle deliveries, no more running out of gas unexpectedly, and no more bottle rental fees.
Future-proofing – As New Zealand moves toward electrification, being on an all-electric home setup positions you well for solar panels and other renewable energy options down the track.
Environmental benefits – Heat pumps produce significantly lower emissions than gas systems, particularly when powered by NZ’s largely renewable electricity grid.

What's Involved in the Conversion?

A gas-to-heat-pump conversion involves several trades working together. As your certified gasfitters, we handle all the gas work:

Califont or Gas Cylinder Removal

We safely disconnect and remove your existing gas hot water unit, whether it’s a continuous flow califont or a gas storage cylinder like the Rheem Stellar. The gas line to the unit is capped and tested.

Heat Pump Installation Coordination

We work alongside your heat pump installer (or can recommend one) to make sure the timing works and there’s minimal downtime without hot water. The heat pump installer handles the new unit, the electrical connection, and the water plumbing. We handle everything on the gas side.

Kitchen Hob Conversion or Replacement

If your kitchen hob runs on natural gas, you have two options:

Convert to LPG – We swap the gas jets, install an LPG bottle and regulator outside the property, and reconnect your hob. You keep cooking on gas without the town gas connection.
Replace with electric or induction – We disconnect the gas to the hob, cap the line, and issue the compliance certificate. An electrician then installs the power supply for the new cooktop.

Most homeowners who want to keep cooking on gas go with the LPG conversion. It’s a straightforward job and means you only need one LPG bottle for the hob rather than paying monthly line charges for the entire gas network connection.

Gas Disconnection

Once all gas appliances have been removed or converted to LPG, we cap the gas line at the meter. You then contact your gas retailer to close the account and arrange meter removal. We provide the compliance certificates your retailer will need to process the disconnection.

Compliance Certificates

Every stage of the gas work is certified. We issue a Certificate of Compliance (CoC) and Gas Safety Certificate (GSC) for the removal work, the hob conversion (if applicable), and the final gas disconnection. These are legally required and important for your insurance records.

A standard hob swap where the cutout size matches and the gas connection is already in place can usually be completed in 1-2 hours. If the cutout needs modifying or the gas line needs adjusting, allow 2-4 hours.

What Does It Cost to Disconnect From Gas?

The total cost depends on how many gas appliances you have and what work is involved. The main cost components are:

Califont or cylinder removal and gas capping – The gasfitting work to safely disconnect your hot water system.
Hob conversion to LPG – If you want to keep cooking on gas. Includes jet swap, LPG bottle, regulator, and line work.
Or hob disconnection – If you’re going fully electric. Simpler job, just disconnecting and capping.
Gas retailer disconnection fee – Your gas company will charge a fee to disconnect the meter. This varies by retailer but is typically a one-off charge.
Heat pump unit and installation – This is handled by the heat pump installer, not us, but it’s the largest single cost in the conversion.

We provide a clear quote for all the gas work before anything starts. No surprises.

      EXCELLENT  
   Based on 165 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Sam Clements 
 
 
 
 Trustindex verifies that the original source of the review is Google. Citywide Plumbing provides a reliable, friendly, honest and trustworthy service. My relationship with them extends back decades. While at the more expensive end of the plumbing services scale, the quality and consistency of their work is worth paying more for. I highly recommend them for all your plumbing needs.
  
 
      Posted on Google  
   
   Emily Smith 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service and workmanship. Very professional, caring and friendly.
  
 
      Posted on Google  
   
   bayar ganbold 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would give 6 stars if I could! We had a fault with our waste water pump and the control switch and called a number of plumbers, all of whom referred us to Citywide Plumbing. They were on the scene within 20 minutes and had given us a breakdown of what went wrong and how they'd fix it. They provided a quote the next day and helped us work with our insurance. Once the parts had arrived Sean got to work and did an excellent job helping us get our plumbing in order. Josh and Sean were a pleasure to deal with from the get go and were professional, courteous and were very knowledgeable - making them an expert in what they do. Wishing everybody at Citywide plumbing all the best, you guys rock!
  
 
      Posted on Google  
   
   Miu Tuala 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service.....Punctual and Professionalism was shown by the team.....They dealt with our cylinder issue very quickly and overall and friendly and simple team that made us feel confident that they knew what they were doing.... Excellent job.... Thank you
  
 
      Posted on Google  
   
   Gary McKinney 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great friendly service from Tremaine of Citywide Plumbing Services Ltd.   Did a great job of our pump installation. Highly recommend
  
 
      Posted on Google  
   
   Ari McGrigor 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fantastic service. Pump started making some noise, I ignored it for a couple of weeks and the organised the team to come and look at it a couple days later. Pump died completely that evening, they came out the following morning to rescue us with a loan pump. Took a look at the old one and showed it was done, installed a new one for me. Highly recommend the Citywide team.
  
 
      Posted on Google  
   
   John Cook 
 
 
 
 Trustindex verifies that the original source of the review is Google. Superb communication and service from Alex, Josh and the team! Wouldn't hesitate to recommend this company to anyone looking for plumbing and pump service.
  
 
      Posted on Google  
   
   Te mara a whakarītea 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent customer service, goes far and beyond! Thanks Tracey HIGHLY RECOMMEND AAA+++

Trusted Across Auckland

Why Choose Citywide Plumbing & Pumps?

Under New Zealand law, all gas fitting work must be carried out by a licensed gasfitter and certified on completion. At Citywide Plumbing & Pumps, we issue the required gas compliance certificates with every job, no exceptions.

Certified & Licensed Gasfitters

Every job is carried out by a Certifying Gas Fitter licensed by the PGDB, and signed off with the required compliance certificates.

The Whole Job, One Team

Gas, electrical and plumbing handled in-house, from califont swaps to full gas to heat pump conversions. No juggling multiple trades.

Over 30 Years On The North Shore

Local, experienced and trusted, with over 165 five star Google reviews from Auckland homeowners and businesses.

Safe, Compliant & To Code

All work meets current NZ gas regulations, so you’re covered for records, insurance and resale.

Frequently Asked Questions

How long does the full conversion take?

The gas work (califont removal, hob conversion, gas disconnection) can usually be completed in a single day. The heat pump installation is a separate job coordinated around the same timeframe so you're not left without hot water.

Can I keep cooking on gas after disconnecting from the network?

Yes. We convert your hob to LPG and set up a bottle outside the property. You keep the benefits of gas cooking without the monthly line charges.

Do I need to organise the heat pump installer separately?

We can recommend a heat pump installer if you don't already have one. We coordinate the timing so the gas removal and heat pump install happen back to back with minimal disruption.

Will I really save money by switching?

For most Auckland households on town gas, yes. Eliminating the gas line charges and switching to a more efficient heat pump system typically results in meaningful savings. The exact payback period depends on your current gas usage and the cost of the heat pump installation.

What compliance certificates do I get?

We issue a Certificate of Compliance and Gas Safety Certificate for every piece of gas work completed. These cover the hot water removal, hob conversion, and gas disconnection.

Request a Free Quote

Ready to come off gas? Call us on 09 444 6504 or fill out the form below and we’ll get back to you promptly.