Ducted Gas Heating Replacement

Book A Quote

By providing your mobile number, you agree to receive SMS updates about your booking, job progress, missed-call follow-ups, and other service communication from Alliance. You can reply STOP to unsubscribe at any time.

4.9/5 Star 2900+ Reviews

5/5 Star 1066+ Reviews

5/5 Star 40+ Reviews

4.9/5 Star 200+ 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.Β 

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.Β Β 

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.Β 

With Alliance Climate Control, you’ll benefit from:Β 

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

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.Β 

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.Β 

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.Β Β 

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.Β 

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.Β 

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.Β 

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

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.Β 

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.Β 

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

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:Β 

  • Repairs are too frequent or too expensiveΒ 
  • Energy bills are increasingΒ 
  • Visible damage or wearΒ 
  • Heats slowly or unevenlyΒ 
  • Strange noises coming from heaterΒ 
  • Gas or carbon monoxide leaksΒ 
  • 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.Β 

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.Β 

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 β€” 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 β€” 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 β€” 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.Β 

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.Β 

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.Β 

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

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.Β 

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.Β 

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.Β Β 

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

Brivis research shows that on average:

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

*compared to a 3-star gas heating unit.Β 

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.Β 

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.Β 

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.Β 

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.Β 

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.Β 

Book your appointment with Alliance Climate Control now.Β 

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

Matt A.
3 days ago
From the initial inspection it was great and the installation team was exceptional
Lisa M.
3 days ago
Connor was very professional and friendly. He was comprehensive in reviewing all aspects of the annual service and was very clear and helpful. Thank you, Connor.
Ailsa G.
3 days ago
Thorough, timely and customer focused
Cidney K.
3 days ago
Arrived on time, worked effectively, cleanly and very professional; always checked details with me such as placement and position. Finished on time, removed rubbish wrapped up paperwork and reviewed unit operations including recommendations - very pleased with the outcome.
Mick
4 days ago
Outstanding installers, on time,tidy and efficient.
Glen A.
4 days ago
Although there was delay in the guys arriving to my house (conflicting the original text confirming arrival time) the guys pulled out all stops to have the new aircon installed (plus a service on our two other units) within the time I needed to have them finished by. Great efforts by all involved, cleaned up after themselves and understood my urgency in getting them completed as I had an appointment to make. I would highly recommend the team (just make sure they arrange to arrive in the timeframe originally quoted).
Mark S.
5 days ago
Very good experience with the team.....they did a thorough job, cleaned up well and communicated clearly about the work. We will use them again.
Kris W.
5 days ago
Cristiam performed my annual air-con service today. What a fabulous professional attitude. He worked diligently and was totally respectful of my home. Cristiam also clearly explained the service he had performed which I really appreciated. Thank you for a fabulous job!
Simon H.
1 week ago
I would highly recommend Alliance Air Conditioning. They fixed my AC compressor by replacing old parts with new, Other companies suggested I needed to replace the whole system. They saved me thousands of dollars and now my AC is working better than before. Metish and his team were extremely professional and described in detail what they had done to get my AC back up and running perfectly. Great company to do business with.
Rowan
1 week ago
Excellent from quote (Ben) to booking (Tia and Zac) and installation (Jonathan, Ivan and Chris). Friendly, helpful and professional.
Elizabeth B.
1 week ago
Excwllent service and a stress free installation and great clear up. No messcat all.
Judy
1 week ago
Excellent service from Alliance Air Conditioning, especially Emre\! His thorough, professional deep cleaning made a noticeable huge differenceβ€”our air conditioner is working much better now\. Highly recommended\!
James M.
1 week ago
Rahil, my technician from Alliance AC, serviced my Mitsubishi AC unit. He was very friendly, efficient, and kept me updated on when he would arrive. I am very pleased with the result. My split system is now clean and working perfectly. I can highly recommend Alliance Air Conditioning for all your AC needs. Thanks again, Rahil!
Rossano S.
1 week ago
I was not home , Mum was , and she is a harsh critic, I can say she is OCD, so she was extremely impressed with the service and cleanliness.
Greg L.
1 week ago
The service i received from start to finish was first class. From James coming out and giving his thoughts and quote to Jb and co coming out for the install. The guys did an amazing job and cleaned up after themselves. Thanks so much. Highly recommend AAA+
Iva S.
1 week ago
Gokhan, Can and Niko have installed our new AC and removed the old one. Professional, kind, polite and very respectful. They cleaned all rubbish and packing materials from the works. They left the area clean and all the works have been done with good workmanship. Very careful with our belongings. Happy with the installation. Electrical works are still ongoing. Edit to add the electrical installation- Mohamed and James were amazing. The job was very long, but the persevered and did a very nice neat conduit. They cleaned up after drilling and the cut offs- very neat work and great quality. Very polite and professional. AC works ! Thank you for your services, would not hesitate to use ACC crews again. I had a second job done by ACC - amazing electrician Mohammad and cannot fault his work. Always checking when things got tricky πŸ˜… but we solved all the issues on the spot. He replaced our 24 years old main switch board and created 2 new outdoors el sockets. Neat, tidy, polite and very efficient. Even our cat liked him ☺️. Thank you for your service! I had a third job done for electrical- ceiling fans installation in 3 bedrooms. Amazing electrician Mohammad with his helper did a great job and in few hours it was all connected. Thank you for your service again !
Sue P.
1 week ago
I have a regular annual service to check all electrical works in my home. The electrician was punctual, polite and completed a thorough check, before providing a written report as well as verbal feedback. This gives me peace of mind.
Jenny
1 week ago
The installer tidied up everything and paid attention to every detail. Very happy with the work.
Humberto Stein S.
2 weeks ago
Had a good service for my air con maintenance. Aaron, the technician did an excellent job and was very careful with my apartment.
Catherine U.
2 weeks ago
Technicians were great - very knowledgeable, friendly 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