Ducted Gas Heating Replacement

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Gas Central Heater
Installation
Up to

$500 Off

With any new central
gas heater supply and installation*

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*Offer to be presented at point of booking or sale. Not to be combined with any other offer.
Trade in your old
System
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$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

We care 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

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.

2,900+ 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

Jane S.
2 days ago
My old reverse cycle air con units were serviced, Alliance was fantastic from getting the quote to the job. A big one! Deep cleaning with lots of water but not a drop spilt. All the technicians were friendly and professional. Thank you
Robert P.
3 days ago
Good timely service. Everything went as scheduled & work done efficiently. Couldn’t ask for more
loretta M.
3 days ago
The service I received from start to finish from Alliance CC was of the highest quality. All tradesmen were honest, respectful and well mannered. I would highly recommend this company for installation of ACs and any other services that they carry out.
Naz H.
4 days ago
Andre was the only real and main highlight of the entire process of having a unit installed. He was extremely helpful, did things he clearly didnt have to and went above and beyond. The experience before he came to resolve a problem that occured, was not the greatest at all and we were quite disappointed. But im very glad Andre was the final technician to help as it left a much more positive note for us. Thank you Andre.
Lauren M.
5 days ago
⭐️⭐️⭐️⭐️⭐️ 5 Stars – Outstanding Service from André! I’ve dealt with many people at this company, but André was truly exceptional. He recognised that our issue may have been misdiagnosed previously and went above and beyond to get to the bottom of it. After months of problems with our machine, he is the first person to give me absolute confidence that it will finally work as it should. I cannot thank him enough. I felt compelled to leave this five-star review because outstanding service like André’s deserves to be recognised. He is an absolute asset to the company!
Karen L.
5 days ago
Fantastic service. We have just bought a new house in Northbridge and moved into the property. The air conditioning wasn't working well. We brought in an air tasker to do a general assessment. He immediately pinpointed that one of our ducted systems wasn't working and it was going to be a complicated job. He recommended Alliance to us and also recommended Daikon’s air conditioning units because they were so quiet. Within a few days we had somebody come round from Alliance and spend a lot of time on the property checking out whether we could replace the ducted system or whether we would need to go with the split system. It was a much more expensive job than we expected and the guys did everything to try and get us a keen price. We really appreciated everything they did. The installation team turned up today, all bright smiles and lots of enthusiasm, and were so, so careful around the property. They laid sheets everywhere and put clean plastics around things like wardrobes so there was no dust. They were so clean and tidy. They worked like troopers all the way through the day and after 10 hours of work it was finally done. They swept all the stairs, cleaned everything away, and even had a little goody bag to say thank you. They were absolutely fantastic and I couldn't recommend them enough, especially this particular team. He was so careful and thoughtful with the house.
Chris S.
6 days ago
James and Hassan were punctual and friendly. They communicated their plan and provided updates throughout the servicing. They were respectful of the property and furniture, ensuring everything was protected as they worked on the units. Overall a great customer experience. Highly recommended.
Susan W.
6 days ago
Had my air con serviced today, tech did a great job, very happy with the service
Leslie M.
1 week ago
It was refreshing and pleasant dealing with the Alliance Team that worked at our premises. Alex assessed what was required and provided the quote. On approval Alliance sent their Team Yunus, Peppe and Jacky to execute the job. They arrived on time( there went my sleep) and had the air conditioners installed by midday. They were also accomodating with a light globe and skirting around an adult dog and puppy. Thanks guys. Leslie.
Glenn S.
1 week ago
Alliance Climate Control went above and beyond what I expected with our air con installation. They were exceptional. Installing AC in our loft apartment was not straightforward. Alliance helped us respond to the questions we got from our Strata Committee, adapted the scope of works and did what they said they would do. The installation team of Garrett, Shabi and Daniel did a great job. The internal trunking is almost a work of art. They did such a high quality job. They also took great care with our furniture and walls, using covers and drop sheets to protect everything. As the work involved cutting holes in our ceiling and walls, another team - Meedy and John -did a superb job in fixing up all the surfaces. (And reinstalling our electric blinds). Thanks guys. We got 5 quotes for our AC installation. Alliance are a bit pricier than others but geez it is worth the extra. They delivered the goods. We are very happy with the end product.
Sophie
1 week ago
I want to give a big shout-out to Tommy, Shaad, Shabi, and the Alliance team for helping my family install new ACs! We’re very pleased with the service and the lovely team. We’ll definitely be back for our future needs.
Martin W.
1 week ago
Professional installation by an excellent team. Work was completed in a timely manner without any disruption.
Shandra M.
1 week ago
We had trouble with our air con unit and had Alliance come to check it. Throughout the process we had a number of team come out to do work and all of them were fantastic. Very polite, clean and friendly. Kyle was awesome helping resolve the issues and going through options, Tommy, Shaad and Mussef did a great job on the instal with an extra visit from Matt. Then there was phone support from Alfie. I will have no hesitation in recommending them to others.
Kieran H.
2 weeks ago
Fantastic installation service from Yanus, Jacky, and Peppe - plus everyone along the way to getting my new AC fitted! Really professional, timely, and careful. Thanks heaps!
Hope P.
2 weeks ago
Alliance Climate Control have been exceptional to work with. Their team is locally based, fast, friendly, and thorough in all their work. Highly recommend their services!
Benji S.
2 weeks ago
My family and I highly recommend Alliance Climate Control! They just finished installing a Daikin air con system at our place in Turramurra. The guys who came out were super polite and friendly from the moment they arrived. They did a fantastic job with the installation, cleaned up after themselves and left the house absolutely spotless. If you need an air conditioner installed, definitely give these guys a call!
Mark V.
2 weeks ago
Alex is the consummate professional: he is efficient and very polite.... a pleasure to deal with
Catherine A.
2 weeks ago
I had my air conditioner serviced by Vash. He arrived on time introduced himself was very well presented. He thoroughly serviced my machine and explained what he was doing. Left yank in place and cleaned. It often one experience such a delightful pleasant young man helping us older generation with such politeness. Many thanks please to Vasham
Sianne B.
2 weeks ago
Andre and Setam did a fantastic job installing hatches and getting the air con working perfectly. They absolutely flogged themselves on a super hot day to get the job done. Thanks team!
Michaela K.
2 weeks ago
Staff are professional, courteous, efficient and knowledgeable. They recently serviced our air conditioning units and investigated a rattle. They were quick to resolve the problem. Good value for money.

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.

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