Ducted Gas Heating Replacement

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Get Ready for Winter
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Gas Central Heater
Installation

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gas heater supply and installation*

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System

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Air Conditioning
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Reverse Cycle Electric AC Heating

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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​

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Inhouse trained techs, we don't use contractor​

Upfront & honest
installation quotes

After care, Lifetime workmanship warranty*

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We go the extra mile & focus
on the small details

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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 2132 reviews
Stefan U.
Tommy, Emre and Daniel were very professional and completed the job with care.
Robert W.
Great work from Tommy, Miguel & Charles. Very mindful of protecting furniture & floors. Would recommend.
Gregory E.
I’ve had Yunus and his team at my house twice to install air conditioning. I highly recommend their attention to detail, quality and cleaning up, and usefully explaining what they are doing along the way.
Nigel C.
Cristian, Louis and Shaby turned up on time and installed our air conditioner efficiently without issue. Upon completion our home was left clean and tidy.
Thanks for your help
Andrew F.
Jason was brilliant. He was efficient and personable. We are recommending your company to all our friends.
Joseph B.
Damon and Galvis were great - explained everything clearly and were able to perform all maintenance needed. I’ve already referred a friend!
Harry K.
Kody from Alliance was fantastic! Explained everything in detail and I felt completely satisfied with the service provided! Thanks Kody and Alliance!
Evangeline W.
Alliance went above and beyond our expectations, definitely ensuring that we were totally happy with the installation. They are happy to revisit if there are any concerns and will always find a solution to any problem you may have. Highly recommend their services.
Suzy L.
Liam and his partner did a great job and even had time to play with our dog 😄
Stephanie H
Steven and Cris have been extremely helpful and we were very happy with their work. Any outstanding concerns or queries were followed up promptly and professionally. Highly recommend the company.
David B.
Jason and Nick completed a full service of our ageing aircon. Very impressed with their professionalism and attention to detail. I am happy to highly recommend them. They are both outstanding representatives of Alliance, delivering an unbeatable customer experience.
David S.
Blown away by Shazim and Brandon, who were very helpful in trying to fix a problem with my air conditioning which had eluded a number of technicians from other companies over the previous years. Wonderful work, place left clean, helpful and polite service.
Gail J.
Comprehensive efficient service. Problem solved then provided solutions.
Ace G.
I recently had a new air conditioner installed by the team from Alliance Climate Control, led by Vy and supported by Luang, Jamie, Harry, Peter, and Kaj. From start to finish, the service was absolutely first class. The team was professional, efficient, and went above and beyond to ensure everything ran smoothly.

Thank you for delivering such an outstanding customer experience. I wouldn’t hesitate to use Alliance Climate Control again and highly recommend them to anyone seeking reliable and high-quality air conditioning services.
Christian Claye E.
I usually sizzle with hate 'n anger if I'm paying a trillion dollars. But these lads were nuthin short of top shelf, the whole way - utterly professional, thoughtful, polite... and decent 'n honest - a word i do not use lightly. But everything is easier when yve got a shit ton of air con. Cheers
Fergus B.
Needed to either fix or replace our Daikin split air con, we inherited it when we moved in.
Gabriel came for a visit, checked the condition of everything and then explained the issues and potential solutions. He then provided clear options with a formal quote.
Agreed for the replacement with a new system, seamless process.
Ivan and his team then installed it over 1.5 days, great experience, they are super professional and also helped out with a cosmetic issue due to the age of our house (1880s...)
It's been a few weeks since the install and we are very happy with the system and very satisfied with the sales and service teams we engaged with at Alliance Climate Control.
Would definitely recommend!
Dan M
Great team! Vy was attentive, responsive, and creative with both the cabling and aircon zoning solutions. The team took full ownership of the task, handled all the small side jobs without hesitation, and delivered an excellent ducted air conditioning installation. Thank you!
Christopher C.
I engaged alliance to service my two ducted air conditioner systems. Galvis spent a few hours replacing all my filters , cleaning my machines , getting rid of the rust on the machine housing and spraying anti corrosives on the coils . He paid attention to fine details and explained everything he had done to me before leaving. Alliance is not the cheapest but the job they do is of the highest quality.
Anita M.
Andres and Ivan completed a very efficient and clean replacement of my underfloor heating, great service.
Sascha C.
Alliance were extremely professional in dealing with our large complex gas system. We live in an old house with a Braemar gas heating system that is not straightforward. When it stopped pumping hot air I asked for technicians to come out who were experienced and knowledgeable and could diagnose and deal with a problem efficiently. Andre arrived and successfully diagnosed a problem with the temperature sensors damaged by water inside a duct,, and then returned with parts to re-route ducting around a leak and resolve the fault. Andre and his co-worker Brody were courteous, professional and quick workers and I was very grateful for their problem solving and professional service.
Matthew P.
Another amazing interaction with Alliance Climate Control. We had issue with our App interface so gave Jason a call, few minutes later Joseph called to inquire and decided to book an out call. Next day Andre and Kristian arrived, clean tidy and ready to help. In 10 minutes the issue sorted. I cannot speak more highly of the Technical Team and support, sooooo good. We have never been more impressed with the Alliance professional approach and support. Thanks Team.
Zara B
Have received consistently excellent service since 2023. Galvis and Damon were efficient, client-focussed, friendly, polite and explained everything we wanted to know about our system and components during our last service.

Couldn’t ask for better service (and my pets liked them which is always a good sign). Great people, would recommend to anyone.
Lucinda O.
Responsive, quick, communicative and really lovely to deal with. Will be using ACC again!
EDIT: ACC since came back and did an extensive install job - the team was so professional in their manner, the workmanship is fantastic and the final clean was so good it’s like they were never here.
Joanna C.
I highly recommend Alliance Climate Control. Thank you to Yunus and his team - Emre, Gokan, Cristian who did the removal and most of the installation and to Dragan and his team - Louis and Benjamin who finished off as well as Josh the electrician. I was very worried about replacing our old HVAC gas furnace with a new Electric HVAC. However, the professional team-based approach to the installation was highly efficient and I had nothing to worry about.

From the very start, James gave such a thorough and competitive quotation and answered all my questions. Yunus was so calm and accommodating as he lead the removal and installation and every member of the crew was so friendly and helpful. They went out of their way to ensure everything was left clean and tidy with great attention to detail.

Most importantly, we are delighted with the beautiful warm air circulating through our house.

Thank you! ¡Gracias! Tesekkürler! Hvala!
Wesley W.
The team had to come back to fix up a couple of things, easy to book and schedule, on time and sort out the problem

Edit: big shout out to Andre and Miguel
Mario V.
Today, 22.5.25 Alliance climate Control completed satisfactorily the replacement of my old AC system and installation of a new split AC System.
Firstly, Jake Perri inspected my site a week earlier and we agreed on his recommendation and price.
Today, the site team, Dragan, Louis and Benjamin were very polite, helpful and professional during the 3 hours that took to complete the works on a very rainy and wet day.
We discussed some details and issues before works commenced I was given the proper operational instructions.
I'm very satisfied with the work and operation of the new AC, even though, I have been using the system for a couple of hours.
Thank you very much for your assistance.
Regards,
Mario
Jean M.
Repair people were prompt, polite and efficient
Chris L.
Alliance have been servicing our Ducted Air Con for the last couple of years and they have always been very professional, friendly & helpful. Last week our Air Touch console was accidentally damaged & clearly needed replacement. Within a half hour of logging my repair request, I received a call from a lovely lady at Alliance who booked a service appt for the following week. Gabriel arrived with replacement console in hand. He was very competent, thorough & courteous - & kept me well informed as he installed & set up the new console. The Air Cond was up & running again, without hassle, in no time! Thanks Gabriel & the Alliance team!
CJ S.
Very professional, good system knowledge, provided options and worked to budget
Linda R.
Recommend Alliance Climate Control. ACC provided professional sales & service, & met my specific requirements. Big thanks to Jake, Tommy, James & Nick!

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