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Gas leak testing and certificates, sorted properly.

Leak detection, pressure testing, repairs and the certificates you need, from our own licensed gasfitter.

Call HW Group now, or tell us what's wrong and get a quote.

If you smell gas

Leave the area. Do not flick switches, light anything or use your phone inside. Turn the gas off at the bottle or the meter if you can do it safely, open the doors and windows on your way out, and call us from outside.

We test the whole installation under pressure, find the leak, repair it and certify the repair.

Certificates, and when you need one

A gas certificate is required for new gas installations and alterations, and is often requested when a property is sold, rented or insured. If you have had work done without one, or you cannot find the paperwork, we inspect and test the installation and issue what it needs.

The certificate is issued by our own licensed gasfitter.

Reasons people call us

  • A smell of gas inside or near the bottles
  • Gas bill higher than usual with no change in use
  • Hissing near a fitting or appliance
  • Selling or renting a property and the lawyer wants the paperwork
  • Uncertified gas work by a previous owner
  • Insurance asking for proof of compliance
Continuous flow gas unit on a weatherboard wall
An installation tested, certified and on file

What we do

  • Leak detection and pressure testing of the whole installation
  • Repairs to pipework, fittings, regulators and appliances
  • Gas certificates for new work and alterations
  • Compliance inspections for sales, rentals and insurance
  • Bottle, regulator and pigtail replacements
  • Safe disconnection of unused gas points

Done properly

A leak test is a pressure test of the entire system, not a sniff around the bottles. We test, we repair, we retest, and the certificate reflects what we actually found. That is what protects you if anyone ever asks.

Continuous flow gas unit on an exterior wall

How the job runs

  1. Tell us what's wrong

    Call, or send the form with your suburb and a photo if you have one.

  2. Get a time and a price

    We come back with when we can be there and what it will cost. The price is agreed before we start.

  3. A certified tradesman turns up

    The person on your job is certified. No apprentices running the show.

  4. Fixed, certified, tidy

    Work that needs certification gets it, and the place is left the way we found it.

What the reviews actually say

T
Tim Bradbury Google

"We had a fantastic experience with Griff completing our bathroom vanity plumbing job and couldn't recommend him more highly. Personable, reliable and professional, with excellent communication throughout. Completed on budget with a really quick turnaround, without compromising at all on quality. The workmanship is high-end and beautifully finished."

Bathroom vanity plumbing
A
Annie Ewart Google

"Really happy with the service from HW Group. The team were friendly, professional and easy to deal with. Would definitely recommend HW Group!"

Great price
A
Angela Fahey Google

"Amazing experience from start to finish! Communication was clear, professional, and consistent throughout the entire job."

Great price
J
Jasmine Jerome Google

"Great service, highly recommend!"

S
Steven Macdonald Google

"Griffin was superb to work with. Done a superb job of my kitchen and bathroom. Would highly recommend his work."

Kitchen and bathroom
M
Matthew McGrath Google

"The A-team when it comes to plumbing and renovation projects. Griffin project managed my development in Swanson delivered on time and on budget."

Renovation project
A
Alayna Bradbury Google

"Incredibly professional, responsive, and easy to communicate with. Personable and efficient, smooth from start to finish."

Plumbing
A
Annie Ewart Google

"Really happy with the service from HW Group. The team were friendly, professional and easy to deal with. Would definitely recommend HW Group!"

Great price
A
Angela Fahey Google

"Amazing experience from start to finish! Communication was clear, professional, and consistent throughout the entire job."

Great price
J
Jasmine Jerome Google

"Great service, highly recommend!"

S
Steven Macdonald Google

"Griffin was superb to work with. Done a superb job of my kitchen and bathroom. Would highly recommend his work."

Kitchen and bathroom
M
Matthew McGrath Google

"The A-team when it comes to plumbing and renovation projects. Griffin project managed my development in Swanson delivered on time and on budget."

Renovation project
A
Alayna Bradbury Google

"Incredibly professional, responsive, and easy to communicate with. Personable and efficient, smooth from start to finish."

Plumbing
T
Tim Bradbury Google

"We had a fantastic experience with Griff completing our bathroom vanity plumbing job and couldn't recommend him more highly. Personable, reliable and professional, with excellent communication throughout. Completed on budget with a really quick turnaround, without compromising at all on quality. The workmanship is high-end and beautifully finished."

Bathroom vanity plumbing

Common questions

How quickly can you come for a suspected leak?

Tell us what you can smell and where, and we give you the earliest time we can be there. Turn the gas off at the bottle or meter in the meantime and stay out of the area.

What does a gas certificate cover?

It records that the gas installation or the work described complies with the Gas Regulations, who did it, and when. It is issued by the licensed gasfitter responsible.

The previous owner's gas work has no certificate. Can you fix that?

We inspect and test the installation. If it complies we certify it; if it does not we tell you what needs correcting and price the work.

Get a quote

Pick what's closest, answer a few short questions, and we come back with a time and a price.

Step 1 of 6

About a minute

What needs doing?

Something broken, or something you want installed or changed? Pick the closest.

Where can we reach you?

Your email, so we can send the price in writing.

What's your name?

Best number to call you on?

We call to confirm the time and the price.

Which suburb?

What's happening, or what do you want us to do?

Sending your details

One moment.

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Or just call

Call 027 687 3363
  • HoursOpen 7 days, 7am to 5pm
  • CoverageBased in Birkenhead, serving all of Auckland
  • PriceAgreed before we start

Your details go straight to the HW Group team. No spam, ever.

Call now Get a quote