Ducted Gas Heating Replacement

Book Online

Save up to

$700

With any Air conditioning or Gas heater replacement installation trade in*

Limited time only, offer ends . Not to be combined with any other offer.

*Offer to be presented at point of booking or sale.

Request a Upfront Quote

4.9/5 Star 2000+ Reviews

5/5 Star 1066+ Reviews

5/5 Star 40+ Reviews

5/5 Star 25+ Review

Get Ready for Winter
With Our Exclusive Online Promotions

Gas Central Heater
Installation

Up to

$500 Off

With any new central
gas heater supply and installation*

Limited time only, offer ends .
*Offer to be presented at point of booking or sale. Not to be combined with any other offer.

Trade in your old
System

Up to

$700 Off

With any Air Con or Gas heater replacement installation trade in*

Limited time only, offer ends .
*Offer to be presented at point of booking or sale. Not to be combined with any other offer.

Air Conditioning
Installation

Reverse Cycle Electric AC Heating

Up to

$500 Off

With any new Air conditioning
supply and installation*

Limited time only, offer ends .
*Offer to be presented at point of booking or sale. Not to be combined with any other offer.

Schedule an appointment with
one of our specialists today.

Sydney’s Gas Heating
Replacement Experts

Central gas heating is a super-efficient way to heat your Sydney home. However, old and worn-out heating systems could be adding hundreds of dollars to your energy bills each year. 

If your ducted gas heater has been installed in your home for more than 15 years, it is time to consider a replacement! Replacing or upgrading your ducted gas heater will ensure it’s safe and efficient, keeping running costs down.  

When it comes to upgrading your ducted gas heater, the Alliance Climate Control team is ready to help. Our experienced technicians will inspect your current heating system to find out if it’s more cost-effective to repair or replace. 

With Alliance Climate Control, you’ll benefit from: 

 Wondering how much you could save by replacing your gas heating this year? Book your obligation-Upfront Quote with Alliance Climate Control today. 

Why Choose Us?

Reliability

Air Conditioning service that is dependable, consistent, and responsive every time

5 Star Rated

Over 10,000 happy customers and positive reviews

Relationship

Alliance cares about our customers and build long-term relations

Locally Owned

Family owned and operated business

Reputation

Trustworthy, accountable & quality workmanship

Schedule an appointment with
one of our specialists today.

Be quick, get $1200 cash Back with a NEW Natural Gas heater installation*

For a limited time get a cash back when you replace or install a new gas heating appliance

Alliance, cash back on
Gas Central Heating

Up to

$700 Off

When you replace your old
heater or install a new central gas heater*

*Offer to be presented at point of booking or sale.

Jemena, get $500 Cash back on your Natural Gas

Up to

$500 Off

Purchase and install your new gas appliance between 1 March 2023 and 31 May 2023, with claims made by 12 June 2023

*Offer to be presented at point of booking or sale.

To claim your Natural Gas $500 Cash Back, you will need to:

For the Cash Back application, we will need to see a copy of the following:

How Long Does a Gas
Ducted Heater Last?

The lifespan of your ducted gas heater depends on how well you maintain and service it. A ducted gas heating system can last anywhere between 10 and 20 years, with the average life expectancy being 15 years. 

There are three key factors that will impact the lifespan of your ducted gas heater:

Quality – Ducted gas heating systems across the market will vary in quality. Opting for a lower-end heating unit may reduce upfront installation costs, but cheaper systems will need replacing sooner. 

Model – The type and model of ducted gas system you choose will impact its lifespan. An undersized heating unit will have to work harder to heat your home efficiently, meaning it will wear out more quickly.  

Maintenance – Proper maintenance is key to the longevity of your gas ducted heater. Annual gas heating servicing and proactive maintenance gives it the best chance at a long lifespan. 

It’s also important to have any issues with your heating system inspected and repaired as quickly as possible to avoid deterioration. Most parts of a ducted gas system can be repaired or replaced easily, which can help prolong the system’s lifespan. 

Depending on your heating unit’s condition, though, it can be more cost-effective to replace the system altogether. The latest gas heating units on the market are far more energy-efficient than older models – meaning the energy savings can quickly balance out the cost of a replacement. 

Wondering if it’s time to replace your ducted system? Give Alliance Climate Control a call to book your assessment and quote. 

Schedule an appointment with
one of our specialists today.

Why Replace My
Ducted Gas Heater?

If your old gas heater is starting to struggle, you may be considering the benefits of replacing it. Up-to-date heating units from Brivis, Braemar and Lennox offer superior performance and energy-efficiency. 

 

Some of the great reasons to replace your gas heating system include:

Modern Efficiency Rating

Old gas heating units have a lower efficiency rating compared to newer models. By continuing to run an old heater, you’ll be missing out on the energy savings up-to-date heating systems offer.

Avoid Repair Costs

If your heating unit is more than 10 years old, key components will be wearing out - and even if parts don’t need replacing yet, they’ll inevitably need fixing over the next 5 to 10 years. It can be far more cost-effective to install a new energy-efficient heater than to keep an old one ticking along.

More Effective & Reliable

Up-to-date gas heating units offer much greater performance, heating your home more quickly and evenly. Especially if your existing unit isn’t sized correctly, you’ll see a drastic difference when you replace it with a modern gas heater.

Environmentally Friendly

In addition to using up to 30% less energy, a modern 6 Star gas heating system emits up to 75% fewer greenhouse gases than electric heating. Upgrading to a new gas heating unit remains far better for the environment than electric heaters.

Safe For Your Family

A more serious concern is whether an old heater is affecting you or your family's health. Carbon monoxide leaks can occur as your heating unit deteriorates, and older ducted heating can also impact indoor air quality. Symptoms of carbon monoxide poisoning include headaches, dizziness, shortness of breath or nausea. In some cases, CO leaks can even be deadly. Many of our Sydney customers choose to replace older heating systems to ensure the family home is a safe environment.

Silent operation

Ducted gas heating systems are some of the quietest on the market. You won’t be disturbed by any noise coming from the system, even if it’s running all day. It’s a comfortable and discreet way to keep your home heated.

If your gas heating system is wearing out, it may pose a safety hazard. Replacing your old gas heating unit with a new, energy-efficient model ensures it’s both safe and cost-effective to heat your home. 

For an obligation-free replacement quote, book an appointment with Alliance Climate Control today. 

Schedule an appointment with
one of our specialists today.

How Do I Know If My
Gas Heating System Needs Replacing?

There comes a time when your run-down heater is beyond repair, or it isn’t cost-effective to fix. But how do you know if it’s time for a replacement? Signs your ducted gas heating may need replacement include: 
  • Repairs are too frequent or too expensive 
  • Energy bills are increasing 
  • Visible damage or wear 
  • Heats slowly or unevenly 
  • Strange noises coming from heater 
  • Gas or carbon monoxide leaks 
  • Temperature needs adjusting constantly
If your heater is experiencing one or more of these symptoms, book an assessment with Alliance Climate Control. Our expert technicians across Sydney can advise whether your system can be repaired, or if it’s better value to replace the heating unit. When your heater is requiring regular repairs, or heating performance has gone downhill, it may be time to bite the bullet and replace your gas heating unit. Upgrading to a new model ensures you’ll be heating your home cheaply, efficiently and safely this winter.  If it’s time to replace your ducted gas heater, the experts at Alliance Climate Control can help. Call us today to book your assessment and quote. 

Why Our Community
Trusts Alliance?

Licensed, insured techs for your protection​

gas-central-heating-icons

Inhouse trained techs, we don't use contractor​

Upfront & honest
installation quotes

After care, Lifetime workmanship warranty*

gas-central-heating-icons

We go the extra mile & focus
on the small details

alliance-icon

100% satisfaction, or we'll be back to make it right!

Schedule an appointment with
one of our specialists today.

How Much Does It Cost
to Replace a Ducted Gas Heater?

The replacement price of a ducted gas heating unit varies depending on several factors. Luckily, a replacement or upgrade is significantly cheaper than installing a brand new heating system from scratch. 

If you are just replacing a broken gas heating unit, you should already have the ducting, vents and controls in place which will cut back a lot of costs. However, if there are internal parts that are outdated or inefficient, it may be better to replace these. 

Damaged ductwork can undermine the performance of your heating system and increase running costs. However, the lifespan of ductwork is often longer than the gas heater itself, and they can also be patched or repaired. 

The model, manufacturer, and kilowatt output of your new and existing ducted heating system will be the major factor when it comes to cost. 

However, all homes are different, and you’ll want to ensure the heating unit is appropriately sized. This means the best way to determine the cost of replacing your gas heating is to get a personalised quote from a Sydney gas heating professional. 

Our expert team can calculate exactly which gas heating unit is best for your property’s layout. To book your obligation-Upfront Quote, call Alliance Climate Control today.

We Are cm3
Qualified Contractors

Cm3 certification is a Work Health & Safety (WHS) prequalification system. Being Cm3 certified, means our business has demonstrated the highest-level health and safety capabilities as well as having the right insurances and licences to protect our customers. Using a Cm3 certified technician is crucial to ensuring you and your project are in safe and protected hands.

How Much Could You Save By Upgrading
Your Gas Heater?

Ducted gas heating systems are much more efficient, and they’re designed to comply with modern environmental standards. A 6-star rated Brivis gas heater saves Aussie households an average of $567 a year, when compared to old 3-star models. 

If you’re upgrading your gas heater, a higher star rating means it’s more energy efficient – meaning you’ll save more on your annual running costs. While upgrading to a newer model does come at an upfront cost, this is quickly offset by reduced running costs within years.  

The more energy-efficient your new heating unit is, the more savings you’ll keep in your pocket this winter. 

Brivis research shows that on average:

  • A 4 star system uses 13% less energy – annual savings of $236 
  • A 5 star system uses 22% less energy – annual savings of $420 
  • A 6 star system uses 30% less energy – annual savings of $567
     

*compared to a 3-star gas heating unit. 

Don’t pay more than you need to on this year’s energy bills – instead, get a quote on replacing your old gas heating system today. 

Book your appointment with Alliance Climate Control for a personalised quote.

Why Choose Alliance For
Gas Ducted Heater Replacement?

Choosing the Right Ducted Air

When it’s time to replace your home heating system, it’s critical to choose the right contractor. Gas heating systems are complex, and poor installation is one of the leading causes of premature wear and tear. 

 

Poorly installed gas heaters can cause house fires or emit harmful pollutants into your home. The consequences of dodgy installation jobs can even include deadly carbon monoxide leaks. 

 

For complete peace of mind, have your gas heating system replaced by Sydney’s trusted technicians: Alliance Climate Control. With thousands of five-star reviews behind us, you know you’ll be receiving the highest standard of service every time you call us. 

 

Our expert technicians take the time to recommend the best replacement gas heater for your home. You can count on Alliance Climate Control for transparent, accurate quoting, keeping you in the loop about your repair and replacement options.

 

With a 5-year aftercare service and 100% satisfaction guarantee, there’s no time like the present to upgrade your home heating. 

 

Book your appointment with Alliance Climate Control now. 

Schedule an appointment with
one of our specialists today.

Get Ready for Winter
With Our Exclusive Online Promotions

Gas Central Heater
Installation

Up to

$500 Off

With any new central
gas heater supply and installation*

Limited time only, offer ends .
*Offer to be presented at point of booking or sale. Not to be combined with any other offer.

Trade in your old
System

Up to

$700 Off

With any Air Con or Gas heater replacement installation trade in*

Limited time only, offer ends .
*Offer to be presented at point of booking or sale. Not to be combined with any other offer.

Air Conditioning
Installation

Reverse Cycle Electric AC Heating

Up to

$500 Off

With any new Air conditioning
supply and installation*

Limited time only, offer ends .
*Offer to be presented at point of booking or sale. Not to be combined with any other offer.

Schedule an appointment with
one of our specialists today.

What Our Community
Is Saying About Alliance

Alliance Climate Control - Heating, Cooling, Electrical
Based on 2341 reviews
Chris T.
The technicians did an excellent job in installing the new HVAC Daikin system. We are happy with the professionalism and workmanship carried out by the company staff. Thankyou.
Blair S.
Lovely team, their quoting guy was lovely and the team were in and out quickly with no fuss. They get busy though so book in advance!
Jenni B.
The company was very helpful and the representative was very friendly and explained to us the two types of air conditioners that he recommended. He made sure we understood how it would be placed and how the water would be kept off our property. The installers and electrician were friendly and did a fantastic job installing and showing us how to work the system. They were accommodating when they needed to stop for a short period during the installation. I would recommend this company and their after service is great if you use them for checking your equipment yearly.
JIE Y.
Excellent repair job on both the InSinkerator and cooktop. Carols Silva was very professional, fast, and did the work perfectly. Highly recommended!
Simon B.
I have to compliment the Alliance team for their approach from start to finish. Prompt service call out, no fee for that when it came clear a new unit was required, quote on the day for a new unit, date for replacement within two weeks, great communication at every stage, slick work by Yunus, Gokhan and Veasal for installation. Outstanding.
David B.
Great service and installation. A big call out to the installation team led by Yunus and offsiders Gokhan and Veysel. Highly recommended.
Robyn A.
Great service provided thanks
Eric N.
Post-Support:

Unfortunately, I've had my air conditioner for almost a year when it started leaking a few weeks ago. It was quite troublesome, especially with summer just around the corner. Thankfully, Alliance was quick to respond and handled the issue promptly and effectively. Yasin arrived, inspected everything carefully, and fixed the root cause of the leak. His confidence and quick thinking not only eased our worries about the upcoming summer but also helped us stay comfortable through unpredictable weather.

Overall, their support after the initial service truly reflects their commitment to helping customers. No installation is ever perfect, but knowing that Alliance was there to support us and get us ready before summer speaks volumes about their dedication. If I could, I’d gladly give them another 5-star rating! ⭐️⭐️⭐️⭐️⭐️

-----
Thank you once again to the team at Alliance Climate Control. This was one of the smoothest home renovation projects I've experienced.

My previous air conditioner was a complete nightmare after installation—I bought it from a certain large electronics store that handed off the job to unreliable third-party contractors. Within months, it started leaking from the base and couldn’t drain properly, it was angled weirdly. It became one of the most stressful events for me, especially during summer when we relied on the air conditioning. The constant repairs and cleaning added up quickly in both time and costs.

When I finally surrendered and started to do my research i came across Alliance Climate Control. They not only promised to fix the issue but also ensure me they will install a new air conditioner the right way (they even stated this on their website - where they will make sure you are satisfied will their work before they finish). So when the team arrive, Kevin and Dragan took on a challenging job—my old unit was installed in an awkward position, with improper drainage and poorly done piping within the walls. But they were undeterred. They assessed the setup carefully, discussing how to best resolve the issues rather than just doing a quick install and leaving.

Their attention to detail was impressive, and they left my place spotless after the job, ensuring I wouldn’t have to clean up after them. safe to say - my room is now cool and ready for the summer heat!

The takeaway here: don't go with just any third-party installer. Air conditioning installations are complex, and cutting corners can cost you more in the long run. Alliance Climate Control's high ratings speak for themselves—they know what they’re doing.

Thanks again, Kevin and Dragan—I truly appreciate all your help!
Louisa
Professional with a capital P. Living in an apartment, I really felt a responsibility to ensure my installation was done properly and these guys did not disappoint. Extremely thorough and courteous team who I cannot recommend highly enough. It's clear Alliance are pretty careful who they hire. Thanks to Jake, Will, Aiden, Vash, BJ, Eric and Diego. (Job # 95638)
Catherine P.
Super lovely guys, very respectful of the property, placed drop sheets across all floorings, knowledgeable and ensured that the install was as per what strata approved
Shane H.
On time excellent service and attention to detail 😁
Paul O.
Great service from Jason - much appreciated.
Sandra Y.
Superb workmanship. A pleasure to work with the team at Alliance Climate Control! Giannis made the best finishing touches to the project too! Thanks guys🫶
perry S.
gersi is truly professional from the moment they started installing the aircon
cleaned up after them selves and with a smile
Marnie V.
We have a 12yrs+ Daikin ducted aircon system, that required replacement of certain parts as a cricket and spider dropped down through the air diffuser outlet right onto my daughter’s bed, you can imagine the shock. The old ducted insultation inside the roof were damaged, hence insect manage to go inside the aircon. Steven and Maisam did the hard work of replacing all 7 ducted insultation and air diffusers outlets, it was a hot day so the roof would be even hotter, they were at our place from morning until quarter past six. The new square air diffuser was 10mm smaller than the older version, Steven had to drive back to the office to see if there was any other older model size that can match our old square diffuser otherwise, they would need to patch the ceiling bedrooms area before adding the new model diffuser. Thank goodness he found ones that fitted that size nicely, but they cannot be close like our previous ones, but that’s okay as now the aircon is more distributed throughout the house as previously it was very cold in the bedrooms and not so cold in the living rooms. Thank you, Steven and Maisam, I really appreciated the hard work, the time and care you put in installing the new ducted insultation and air diffuser. Thank you, Giannis for your speedy work in patching our larger ceiling wall cracks, coming back the next day to sand and paint. Minimum dust, even vacuum and mop after all the work is done, which left minor cleaning for me. Thank you, Damon for carrying out the regular tune up service. Thank you, Alfie, for picking up the phone after five pm on Tuesday when we realised there was a leak dripping between the ceiling facial and gutter, and reassigning Steven, who came out with Mitiesh to fix the drip of the pipe the next day. Mitiesh corrected the pipe with an elbow joint to the gutter, so it won’t drop off and drip again. Thank you, Alliance team members Steven, Giannis, Maisam, Damon, Alfie and Mitiesh for fixing our issues and quality service provided.
Mon K.
Found the Alliance team , informative and thorough, reliable and work completed efficiently and swiftly,
Rodney B.
Great job, quick and easily completed with a very friendly service
Michael K.
Great communication setting up the appointment, and the service person was very professional and service minded.
James E.
Great service. Tommy, Meedy & Kim did a great job on the install and Ioannis did the paint & patch in no time at all. Would highly recommend
Gordon C.
Fantastic team installed in 13 hours with 11 sendors in two story residents. Workmanship was A1. Operation fully demonstrated. 10 stars.
James A.
Alliance Climate Control installed a Multi-head split system in an apartment block for me. I was very happy with their work. B.J, James, Maisam (AC Installers) and Charles and Aiden (Electricians) all did their roles competently and in a timely manner. Also thanks to Jerry who came out and did the initial inspection/quote and answered my follow-up questions.

I would highly recommend Alliance Climate Control as the first stop to anyone looking for AC installs, as they presented far more professionally than the multiple other companies I contacted for the job.
Paul N.
James and the team done a stellar job on our place, easy, professional and slick from start to finish of the job.
Thankyou
Shani M.
Timely and professional service. I can recommend Alliance Climate Control.
Tracey S.
Great company we are so happy with our airconditing after Alliance upgraded the system.
April M.
Fantastic service! The system runs perfectly thanks Yasin, Maisam and your team!
N C.
Can not express how amazing Yasin and Blade were, they came in with a “let’s think outside the box” attitude and created innovative solutions to the issues we incurred.
Thomas H.
Yunus and his team did a fabulous job. He was very thorough in his explanation throughout the whole process from installation to after sales service. He explained in great detail everything that we needed to know about the functions of the control panel. His team was also very professional in cleaning up our dental surgery after the installation so that we were able to operate the following day. I have no hesitation in recommending Alliance to anyone that needs a new ducted Air Conditioning System. We are very happy with their service.
Susan E.
Installation team were fantastic. They arrived on time, very organised a got on with it. I think there were a couple of small issues but the just resolved them not fuss.

When they left everything was spotless.
daniel D.
The specialists from Alliance did a 10/10 job installing 2 split systems throughout the apartment. 5/5
Kevin M.
Andre, the technician, was professional, efficient, punctual, and courteous. Clearly explained the process and a answered my questions. Left the work area clean and tidy.

Offer Save up to

$700

With any Air conditioning or Gas heater replacement installation trade in*

Limited time only, offer ends .
Not to be combined with any other offer

*Offer to be presented at point of booking or sale.

Request a
Upfront Quote