Gas Ducted Heating & Evaporative Cooling

Supply, Installation, Service & Repairs

Free Quote Gas Ducted Heating and Evap Cooling

Click to book an appointment online or organise a call back.

Unlock up to $5,000 in Savings Today!

Government Rebates Now Available on Energy-Efficient Air Conditioners when Replacing your Gas Heater.

Find Out More

Gas Ducted Heating + Evaporative Cooling

Combine gas ducted heating with evaporative cooling for year-round comfort.

Discover how Coldflow designs and installs dual systems that suit Melbourne climates.

How does it work?

Evaporative cooling and gas ducted heating are two separate systems, but can both be placed under the same roof to provide heating and cooling. Please refer to the Gas Ducted Heating and Evaporative Cooling pages for more detailed information regarding each specific system.

Why have both systems?

The benefits of having both systems is that your house will have climate control year round (heating and cooling), without compromising on the quality of air coming into the house.

One Controller

You can have year round heating and cooling, typically using one controller – speak to our sales specialists for more details.

Energy Efficient

Evaporative coolers are one of the most efficient ways to cool your house as well as high rated (energy efficiency rating) gas heaters. With a combination of both, you are receiving the best heating and cooling option with the most value out of your investment.

Environmentally Friendly

Evaporative coolers do not contain any harmful refrigerants (unlike refrigerated air conditioning units), which means that the ozone layer is not harmed for the sake of your cooling needs. Some gas heaters are able to use natural gas which is a greener alternative to LPG.

Organise a Free Gas Ducted and Evaporative Cooling Quote Now or Contact us today to learn more about our gas ducted and evaporative cooling services and how we can help you keep your home comfortable.

Gas Ducted and Evaporative Cooling Install Photo

Gas Ducted and Evaporative Cooling Specifications

Whole Home System

Runs On Gas, Water & Electricity

Heating and Cooling

Frequently Asked Questions About Gas Ducted Heating and Evaporative Cooling

How Do they Both Work?

How Does Gas Ducted Heating Work?

A ducted gas heating system is operated by drawing in air through a fan, and passed over to a heat exchanger to warm it. A return air vent (grille) recirculates air to the furnace, beginning the cycle again. The furnace (fueled by natural gas or LPG), which contains the heat exchanger, is usually installed in the roof space or just externally, but it can also be placed under the floor or even in internal cupboards if space is limited.

Ducting (which is connected to the heater/furnace) distributes the heated air throughout the home, and is usually hung/strapped within the ceiling space or under the floor.

Registers (also called 'grille', 'outlets' or 'vents'), situated in the floor, ceiling, or sometimes the wall, direct warm air into rooms. Heating outlets are best placed around the perimeter of the house, to provide an even heat distribution throughout your home.

How Does Evaporative Cooling Work?

Evaporative Cooling uses the natural cooling properties of water to lower the temperature of a room. A ducted cooling unit is installed on the roof and connected to a series of outlets placed throughout the home. The unit draws in fresh air from outside your house.

As the air passes through the filter pads (inside the roof unit), the air is cooled down and directed into every room in your house. The hotter the air, the better the cooling effect will be.

The entire volume of air within the house is refreshed every few minutes when using an Evaporative Cooler.

What are the running costs with gas ducted heating?

Our recommended gas ducted heating manufacture Braemar has the highest rating and reduction of running costs across all gas ducted heating brands here in Australia. Braemar has 5 Energy Star Ratings, 3, 4, 5, 6, and 7 star that is exclusive to Braemar. (7 Star rating equivalent is based on Australian Gas Association’s results calculated in accordance with the testing methodology in AS4556-2011.)

Using a Braemar gas ducted heater you can save on average $198-$577 on running costs depending on the unit you have installed.

Annual running cost savings for gas ducted heating

Gas Ducted Heater Star Rating Comparison
Gas ducted heater star rating comparison
*Data is based on: • Gas price = 1.6 c/MJ • House Size – 241 m2 x 2.4 m ceiling height • Operation hours per year • 600 hrs(100 days at 6 hrs per day) – based on AS4556-2011. House Heat load – 0.2 MJ/h/m3 – based on AS4556-2011 • Annual Energy Consumption(AEC) for different star rated heaters based on AS4556-2011. 3.0, 4.0, 5.0, 6.0 star rated ducted gas heating systems.

In comparison to traditional heating systems, gas ducted heating uses less electricity, and produces substantially less Greenhouse Gases. So not only will you save on running costs, but there is substantially greater environmental benefits for using gas ducted heating as well.

With Braemar gas ducted heaters you can save on average 0.69T – 1.99T of C02 emissions per year – while also enjoying a comfortable warm home.

Annual C02 Emissions Savings For Gas Ducted Heating

Gas Ducted Heating Co2 Comparison
Gas ducted heating Co2 comparison
^CO2 emissions from small car based on: Table 15, “Carbon Emissions from New Australian Vehicles 2011 Information Paper”, National Transport Commission Australia Calculation assumes an annual travel distance of 7900 km/yr. +CO2 emissions based on Australian Government Department of Climate Change and Energy Efficiency – National Greenhouse Accounts Factors July 2012.

What are the running costs with Evaporative Cooling?

Our commended Evaporative Cooling manufacture Breezair has the highest rating and reduction of running costs across all Evaporative Cooling brands here in Australia. Breezair Evaporative Coolers are so efficient they cost less than one tenth of a standard ducted air conditioner to run.

You could enjoy a comfortable cool house during the summer and other hot days of the year for as little as $37 per year in eletricity costs*. When you do the math,that's on average $346 per year of savings in electricity costs compared to a standard effciency ducted refrigerated systems

In comparison to traditional refrigerated air conditioning systems, evaporative cooling uses less electricity, has a lower peak energy usage, doesn’t produce CFCs or HFCs, and produces substainally less Greenhouse Gases. So not only will you save on running costs, but there is substainally greater environmental benefits for using evaporative cooling as well.

Organise a Free Quote Today

Experience the peace of mind that comes with a perfectly functioning gas ducted heater or air conditioner.
Don't let your comfort wait!

Compare Other forms of Air Conditioners and Ducted Heaters

Photo of a Evaporative Cooling Unit

Evaporative Cooling Keep your family cool all summer long

Photo of a Gas Ducted Heating Unit

Gas Ducted Heating Heating for your whole home

Photo of a Ducted Refrigerated Unit

Ducted Refrigerated The most advanced and high quality air conditioning option

Photo of a Split Systems Unit

Split Systems Energy efficient single room air conditioning

Top-selling Gas Ducted and Evaporative Cooling Brands from Coldflow

Melbourne Air Conditioning Install Locations

Melbourne residents looking to cool down during the hot summer months know they can rely on Coldflow for reliable air conditioning installation. For over 50 years, we have provided quality installation and air conditioning repairs across Melbourne's suburbs. Whether you're in Glen Waverley, Richmond or even Mornington, we are able to come to you and are ready to provide unbeatable expertise and experience.

Coldflow are Melbourne's most trusted name when it comes to air conditioning needs!

What Our Customers Are Saying

Nick came and installed my parents heating and evaporative unit and was absolutely amazing to deal with. He was professional, polite and most of all happy to answer all our questions. Thank you Nick. Thank you to Tom the sales rep who originally came to see us too.
Avatar Icon

ANGELA M.
RINGWOOD

We'd highly recommend the team from Coldflow. Great communication, prompt and efficient installation and also great advice regarding the removal of our old gas wall heater. Not something we had considered but well worth it with the government rebate which we hadn't known about. Absolutely love our new Daikin unit too! Thanks coldflow.??
Avatar Icon

PETER M.
ASPENDALE GARDENS

During the quote process, Jared was very informative about the options available, booking staff for install were extremely accomodating for an earlier installation date & install process was fast & efficient. I would highly recommend Coldflow to anyone looking at ducted heating. Thanks Team!!
Avatar Icon

KATHLEEN K.
FERNTREE GULLY

The engineers were very friendly and professional. They went out of their way to listen to me as a customer. The quality of their work was top-notch: they knew exactly what to do and they expertly installed the air con devices. Would definitely recommend ColdFlow to my friends and family.
Avatar Icon

GREG C.
MULGRAVE

Coldflow recently removed our gas ducted heating and it replaced with a reverse cycle air conditioner. The process from quote to installation was simple and quick! Communication in the lead up to and on the day of installation was terrific. They also tidied up after themselves! I wouldn't hesitate to recommend Coldflow to family and friends.
Avatar Icon

Madeleine L.
KENSINGTON

Prompt and good communication in letting customers know when they are about to arrive. They do and communicate what was done in service. Any questions are answered and I like the professionalism of turning up in a company named work vehicle and uniform. Also the payment method is trusted with a receipt on the email
Avatar Icon

KATHERINE V.
SCORESBY

Amazing turnaround and communication! We had a sales person booked in 3 days after we made the online enquiry. Quote was provided on the spot. All questions answered promptly. Installation one week later. All completed in one day. Sales and installations staff were all super friendly, approachable and helpful. Could not fault the team or service!
Avatar Icon

MEGAN T.
LAUNCHING PLACE

Luckily service personnel came early in the 4 hr window which suited me. Both were very polite and carried out the servicing plus they were able to respond to a couple of questions I had about this aircon unit ( I've recently moved in to new flat) Very satisfied Thank you Julie
Avatar Icon

JULIE B.
SAINT KILDA WEST

On time, informative quote from pleasant sales person. Quick, clean install from pleasant on time installer. Installation even brought forward, quote on Wednesday, instal on Friday! So far great service just got to see how unit performs in hot weather.
Avatar Icon

Elizabeth A.
NARRE WARREN SOUTH

We would have liked to be given the option whether to have the smelly chemicals sprayed in the split systems, as the smell lasted for over a week and we would have opted not to have that. Otherwise we are very happy with the overall service and communication from the technician.
Avatar Icon

LAUREN C.
RINGWOOD NORTH

Very glad and relieved I chose Coldflow. Your installer Murray arrived at 7am Monday 21st, was quickly to work with a minimum of fuss. Old Brivis unit and new Braermar unit out and in through the roof. All over by 9am. He showed us how to use the Braemar control unit before leaving. Great job.
Avatar Icon

PETER H.
MITCHAM

Fantastic service both in regards to receiving the quote (the man sent out seemed to be very knowledgeable and helpful in providing advice on what would work) as well as the installers, who were timely, friendly, knowledgeable and professional in their installation of our split systems :) very very happy with the service we received!!
Avatar Icon

MARC P.
WOLLERT

Darren Story was very helpful with the initial site visit, he explained clearly how the installation would run, and gave us the options. Ash and his team did a highly professional job with the installation, and I am thankful that they wore masks as my mum was home recovering from surgery. A brilliant job all round, thank you very much.
Avatar Icon

Patricia j.
PARKDALE

The team of installers did a fantastic job. We couldn't believe how quick they were in completing the installation of our new air conditioning system. I wouldn't hesitate to recommend Coldflow to friends or family if they require an air conditioner installed.
Avatar Icon

ANDREW R.
ALTONA

Jared, Lucas and Luke were all very professional, friendly and courteous. We were very impressed with the communication and all were on time for scheduled appointments. They were all just really easy to deal with, we'd definitely recommend Coldflow.
Avatar Icon

KATE H.
CHADSTONE

Craig was great, explaining thoroughly & giving advice on appropriate systems to best suit our floor plan. Advised where best the systems should be installed. The young lads installing were absolutely marvelous! Very polite, very tidy & we can't fault their work. Thank you to all involved in making our purchase a hassle free transaction
Avatar Icon

TRACEY M.
BERWICK

The two installers where great ( both named Lucas) the installed four in door head and two main units outside. Very please with the end result . This is the second time I have purchased from Coldflow and would not hesitate in recommending you to others.
Avatar Icon

Geoff B.
WARRAGUL

The installers were exceptionally good. Understood the fragility of my ceiling and dealt with my threatening neighbour when they climbed on the roof on my side. The technician also gave me advice on how to keep the filters healthy and what setting to use. Thanks Coldflow.
Avatar Icon

JULIE D.
HAWTHORN

Every step of the process was first class and professional. You did what you said you were going to do, on the days that you promised and the installation was like swiss clockwork. Best service experience I have had in the last 5 years. Special shout out to Shanon who organised superbly from day one.
Avatar Icon

DARYL K.
TOORAK

Coldflow were great to deal with throughout the whole process. Communication was very good. Installers were on time, efficient and friendly. They moved furniture and picture on wall, put a sheet down over the carpet and left everything clean. Explained how to use the split system
Avatar Icon

HEATHER J.
CROYDON

This my third dealing with Coldflow (3 different properties). Their response times are quick and they make the process extremely easy. The sales person is professional, responsive and easy to deal with. The installers took care, were polite and very easy to deal with.
Avatar Icon

Debra K.
ASCOT VALE

it was a rather difficult installation but both the A/C installers and the electricians did well. i am annoyed that I missed out on the Mitsubishi Bonus Gift Card worth up to $400 due to the impossibility of accessing the Mitsubishi website which required a Pin which could not be found anywhere. Very poor.
Avatar Icon

EMILE R.
MALVERN EAST

Very likely, your team arrived on time. They worked quickly and efficiently, plus they were very friendly. They left our house as they found it , clean and tidy. Just one thing they left behind a piece of equipment which I'm sure they can use. It is no use to us, so it would be a shame to throw it out. Many Thanks.
Avatar Icon

ANNELISE B.
ROWVILLE

I had not dealt with Coldflow until very recently. In a two week period I have dealt with service, sale and installation personnel. All of them were extremely pleasant to deal with, very helpful and efficient - great customer service makes happy customers :)
Avatar Icon

WENDY L.
MALVERN EAST

The two technicians were well mannered, presented well as representative of your company and did a good job explaining what they had done in terms of the service of our gas heater. They were polite, arrived when they said they would which is important given we work form home and have work commitments. Great ambassadors for your company.
Avatar Icon

MARIANNE S.
BALWYN

Overall very satisfied. Quick to come out to quote, gave various alternatives and recommendations. Installers were very efficient installing four units in a few hours without leaving a mess and units are positioned nicely. Also much more competitive offer than another couple of quotes I received.
Avatar Icon

PAUL F.
SANDRINGHAM

This is the second time we have had Coldflow at our house. Each time the quotes were competitive. The installers arrived on time and were super efficient removing an old device and installing the new unit. Thanks to the team especially Nick and the electricians
Avatar Icon

STEPHEN G.
SURREY HILLS

I received a call about 20 minutes before the team arrived at my house. They were extremely helpful and friendly. I was able to pay for the job on the spot, or alternatively, the office could send me an invoice. I appreciated the flexibility of the payment methods.
Avatar Icon

SUE W.
HIGHETT

Daniel was great to deal with, thorough, answered all our questions and communicated well the whole way through. The installation team that come out were fantastic. Double checked anything they needed to, polite, personable and respectful of our home and that my partner was working from home while they were here.
Avatar Icon

Will C.
ROMSEY

Jared was most helpful at all stages especially with filling out the form during the cash back submission to Mitsubishi. I was very happy with Scott the electrician who returned the installation areas back to normal condition. Thanks Jared and Scott.
Avatar Icon

LIZ P.
NOTTING HILL

The 2 servicemen were absolutely 1st class. Extremely knowledgeable, clean and efficient. Very importantly they were also extremely considerate of my house and how they conducted themselves! Overall a brilliant experience and I will certainly be telling everyone about the flawless service that I received. Many thanks
Avatar Icon

BRETT G.
BRIGHTON EAST

I just had my two units installed. Please pass on my thanks to Jared Wates, who provided the quote, and the team that installed the systems today. The installation team worked really hard, double-checked, if not triple-checked, and certainly made sure things were clean when they left. A very professional and courteous team.
Avatar Icon

STEPHEN R.
ROWVILLE

Relatively minor problem. Serge took due diligence and checked whole unit. May need a new stop valve in future. He explained how how well our 19yo unit is functioning and gave us thoughts on future possibilities. Obviously a very experienced technician and a real gentleman.
Avatar Icon

ROD P.
KILSYTH SOUTH

The staff who attended to me was very good, courteous, communicated well and did everything possible to identify the problem and he did identify the problem. He also clearly explained the possible options for resolving the problem. I was very happy with his conduct.
Avatar Icon

Gladys M.
CAULFIELD NORTH

I have always had very good service from Coldflow in the past and now at present and I would thoroughly recommend them to everyone who has airconditioning. As our house is relatively new at present, we are waiting to hear from the builders if our system is still under warranty, if it isnt we will certainly get back to you again.
Avatar Icon

LINDA F.
CLYDE

Product selection and design was perfect. I was always informed with progress. Installation was carried out by courteous tradesmen. The completed installation was tested thoroughly and I was shown how to operate the equipment. Well done to everyone who participated. Big Thanks!
Avatar Icon

JOHN R.
TEMPLESTOWE

Very happy with the whole process. All were knowledgeable and professional and turned up on time. They also worked through some pretty wet cold and windy weather but just got on with the job. Everything was explained and we were consulted if there were changes needed The system is working well and we are very happy with it
Avatar Icon

DIANNE L.
KEYSBOROUGH

We had a great experience. We were called when there was a cancellation and had the heater installed very quickly. Nick who did the installation did a fantastic job, please pass our thanks on to him. Would highly recommend his work to anyone. Kind Regards
Avatar Icon

IAN G.
ASHWOOD

Jarred from Sales did an excellent job at explaining the whole process, helping me choose the correct model etc. Scott the installer was excellent, very clean, respectful, punctual and ensured the site was left in a clean state. Inside the house was also left spotless.
Avatar Icon

ROSS Y.
MOUNT ELIZA

Rang for a service on the existing gas ducted heating system to find the system had died. A quote for a new system was provided on the day and installed the next day. The installation team were excellent, providing great advice and support during the installation. Sincere thank you to all.
Avatar Icon

TINA M.
TEMPLESTOWE

Ray did an excellent job. As it turned out, the error that caused the problem was cleared when the power was off after the storm, but he still made sure the system was working properly by doing a really thorough check of everything. Very helpful, professional and clearly very keen to make sure the job was done properly. Great work!
Avatar Icon

ANDREW R.
MULGRAVE

I was very happy with this companies service. I had a lot of appointments and they made a time that suited. They even showed me how to use the ducted heating system to as an air conditioning ducted system as I only have an air con in the lounge room. I was very impressed.
Avatar Icon

DANIELLE D.
BORONIA

Organised for the team to come out and assess the in laws heating and cooling. There were 6 systems in total. All were checked and reports received. Services conducted on the systems worth keeping and advice given re the others, allowing informed decisions to be made. Highly recommended.
Avatar Icon

LINA S.
MOOROOLBARK

STEVEN crcic IS THE man !!!!! I have never had a better service in my life my girlfriend and I are so stoked he got the fan in the other room working. He was professional caring and overall a champion. Give the brother a few weeks paid time off and a raise and a promotion. 10/10 can't recommend enough
Avatar Icon

MARCUS K.
COLLINGWOOD

Darren Storey - Professional, knowledgeable, easy to deal with. Adam scheduled the installation promptly and then it happened a week earlier - great. Installation crew lead by Jason - fast, efficient, timely - considering the wet weather throughout the morning and hopefully all has been done properly.
Avatar Icon

MICHAEL A.
DINGLEY VILLAGE

The whole process from selecting the Aircon, advised by Sales Rep Jared to the installation by Bailey and Anton was so efficient and smooth flowing. Installers were exceptionally courteous and helpful and professional. I couldn't be more pleased with the overall experience. Thank you very much!
Avatar Icon

Ranjit K.
FOREST HILL

Excellent service all round -from person who made appointment to the staff who attended gave great service. Notified half hour before arrival, arrived on time, service completed without fuss, used protector to safeguard flooring and minimise mess, showed photos of issue and how it was rectified, explained report and length of warranty on service.
Avatar Icon

ROSINA G.
CRAIGIEBURN

We were very happy with the whole process, from the Sales Consultant Liam, to the installers Josh, Anton, Bailey and Casper. They were all excellent workers from the moment they arrived to when they left. They were on time, polite and cleaned up all of their mess. Would highly recommend.
Avatar Icon

DEBBY F.
CHELTENHAM

Great friendly service. Chris called beforehand and arrived between times we were given - checked unit was running safely and as well as it could (given age) and ensured it was safe to continue using. He also gave great advice regarding updating the unit. Customer service from booking to followup was fantastic. Well done Coldflow !
Avatar Icon

CHERYL D.
BENTLEIGH EAST

This was an incredibly easy process for us from start to finish. Daniel was wonderful at determining the best fit for our house and life and made the selection process so easy. The team on the day were quick and did a great job. We can't believe it didn't even take a full day. We are so happy with everything!
Avatar Icon

Tess F.
COBURG

More Coldflow Customer Reviews >