Ducted Gas Heating Replacement

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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*

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Trade in your old
System
Up to

$700 Off

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Air Conditioning
Installation
Reverse Cycle Electric AC Heating
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supply and installation*

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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

Every job is completed under a fully licensed and insured operation. Your home and investment are protected.

Inhouse techs

We never send contractors. The person at your door is an Alliance-trained technician — accountable to us, and to you.

LIFETIME WARRANTY

We back every installation with a lifetime workmanship warranty. If it's our fault, we fix it. Full stop. No asterisks. No excuses.

UPFRONT PRICING

You'll know the full price before anyone picks up a tool. No surprises on the invoice. No awkward conversations at the end.

100% SATISFACTION

If you're not happy, we're not done. We'll come back and make it right — because a job isn't finished until you say it is.

24-HOUR SUPPORT

When your system goes down at 10pm on a Friday, someone actually picks up. Real support, real hours, real people.

2,500+ FIVE-STAR REVIEWS

Not self-proclaimed. Verified by real Sydney homeowners across Google, TrustSpot, and Facebook. See what they're saying.

PROUDLY LOCAL

Sydney-based, Sydney-focused. We live and work in the same suburbs we service — your neighbourhood is our neighbourhood.

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
4.9
Based on 2683 reviews
Orit K.
Jason and Nicolas were great. They were efficient and did a comprehensive job!
martin J.
Luke was really good today. He came to do a service and was so polite and considerate, first thing in the morning so we were all just getting ready to go to work and he quietly got on with the job.
CHRIS S.
Very happy with work of Ahmad & Louis
Lisa B.
We had our Air Conditioning serviced by Alliance. They were great. Christiam was professional, polite, careful, clean and got on with the job at hand. I would highly recommend them. Great service all round.
Catherine L.
Ahmed, Louis, Cris and Liam did a wonderful job. I felt comfortable leaving them unsupervised in our home while we were out at work and they always gave me a full overview of the day in the morning and a report at the end of the day. They tidied up at the end of each day even though it was a 3 day job. Very happy - and now nice and warm too!
Greg D.
Very professional installation of ducted reverse cycle air conditioning system. Installation crew were excellent! Thank you Matthey, Needy and Carlos! The large job completed in two days. Turned up on time, used drop sheets, cleaned up afterwords very well. Good end-to-end customer service. Recommended!
Tony R.
Great experience with Charles - excellent communication, knowledgeable and proactive. Would highly recommend Charles for anyone requiring electrical repairs in their home.
Les M.
The two technicians who came to do a major service on our split air conditioner was exceptionally professional thorough and extremely knowledgeable- I recommend this company very highly
Irena L.
Shadi, Ilch and Christian installed my air conditioning system recently and I was very pleased with their professionalism, courtesy and thoughtfulness. They arrived on time and got to work straight away. They contained all the mess and cleaned up before they left. I highly recommend their work.
Roderick W.
Excellent service. The guys helped me learn a few new tricks with my control panel as well. Explained in detail what they were doing and how it works, and after checking the air distribution through the ceiling vents, went back into the roof to tweak it just right.
Karen S.
The customer service was excellent and the installation for my new air conditioner was very professional and prompt.. All of your staff that I encountered through the process were very friendly and knowledgeable. I would highly recommend your services to my friends and Family.
David S.
Liam was punctual, respectful, discussed options. Was tidy and efficient. Have been using Alliance for years and recommend them extremely highly.
Angharad M.
I’m so glad I chose Alliance for my air con. From the consultation to post installation after care, everything has gone perfectly. Alliance has consistently delivered on their promise; they’ve turned up when they said they would, completed the job in the stated time frame and made sure I was happy with the work. The electrons even installed a towel rack for me - because they were there and they could. Nothing is too much trouble for these guys! Fantastic quality job and service.
Kellie S.
From the get go, my experience with Aysa was great. Very patient in answering all my questions through the initial consultation. Huge thank you to Tommy, Moe, Shaad and Gokhan for their professional work in installing the multi split system air conditioning! They were professional from arrival and took care to carefully prep my place before the job and took a lot of care in cleaning after. They explained everything and made sure I was comfortable with everything. Definitely recommend Alliance - I will be using them again for future jobs.
Hugh M.
Chris from Alliance Climate Control knew what he was doing, was thorough and very respectful and courteous.
Simon M.
Awesome work from Harry, Liam & Ioannes Quick and efficient patching - thankyou.
Sri S.
On time, thorough and very professional. Mitesh and Zach were great. Highly recommend and we will be using them again.
Katie S.
Big thank you to Harry, Tommy, Shaad, Aden and Gokhan for a trouble free installation. The team were punctual, friendly, efficient and tidy. Answered any or all questions that I had. Overall it was a great experience.
Michael W.
Great service from first call to installation. Charles and James have done a great job. Worked carefully, provided lots of information, kept us in the loop about what was being done. Everything tested and system explained. Cleaned up after. Thanks
Kellie D.
Excellent service
Caroline G.
Garret, Sayed and Daniel did a great job. Very courteous and professional. They ensured we agreed with positioning and protected our carpets and other property from damage. I highly recommend Alliance.
Jacinta and Angela O.
Jason and Nic were wonderful. Fixed everything and then some. On time, timely, careful, considerate, polite and tidied up beautifully. They were also incredibly tolerant of our very noisy dog and his less noisy brother. Will definitely be back if we need anything. Thank you so much.
Debra A.
Just had my initial inspection with a young man called Kyle. He was knowledgeable, polite, informative and friendly. I have locked in a date (of my choosing) for work to be done. I hope the technician who does the work also has the A1 customer service skills of Kyle. The lady i originally made the appointment with also had the A1 customer service skills. So far, so good Alliance - thank you!!!
Jacqui H.
Ivan, Maisam and Mosa did an amazing job installing our new AC system. They showed up on time, they were courteous and clean operators and delivered a very neat finish. They did a really nice job fitting it in around our old terrace and were sympathetic to the outside appearance. The whole experience from initial consultation and sales process with Jake, to installation was seamless. We would highly recommend.
Jason Y.
very impressed with the work of one of Alliance's team, V the team leader and Kim, Eric and electrician Charlie and sales Liam they are good blokes and handled my job with care and confidence, they know what they doing and job delivered seamlessly. I found this company very organized with their structure and definitely recommend to anyone who has needs for it.
Emily B.
The team at Alliance are excellent. Dylan serviced our units today and was friendly, punctual, and transparent about costs from the outset. He took the time to explain everything clearly and made the whole process straightforward. Thanks again 🙂
Eric
Loannis and Liam did a great job with patching up the hole that the team the day before left after installing my new AC. The team overall were a pleasure to work with. Will definitely use their services again.
Paul S.
Second time I've used these guys. It's the second time they've been prompt, friendly and have done a terrific job. Great service.
Susie Z.
I recently used Alliance Climate Control to replace an old, broken air conditioner with a new ducted system. While their quote was higher than others I received, the level of professionalism and the final result made it worth every cent. Our home has a very narrow roof space and significant temperature imbalances between rooms. Most companies simply told me what I wanted was unachievable. Jake, however, took a different approach. He was incredibly thorough—measuring everything and being completely upfront about the challenges. He walked me through several scenarios of what might happen once the roof was opened, giving me total confidence in their expertise. The installation team, Yunus and his crew(Brody, Can and plasterer Liam) were professional, courteous, and went out of their way to accommodate my requests—including moving the outdoor units to a new location at no extra charge. Yunus made sure that each detail was perfectly executed. The outcome is way better than our old system; thanks to Yunus, the new ducts are much better placed and the zoning works perfectly. The results actually exceeded my expectations. I highly recommend Alliance Climate Control for anyone who wants peace of mind and a team that is willing to tackle difficult problems with honesty and skill.
Teresa W.
Excellent and attentive service. The team were professional and took care in ensuring everything was working and tidied up before they left. They showed a great deal of patience in getting the app working on our mobile phones. We are happy with our new reverse cycle air conditioners and happy to very highly recommend them.

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