Gas Ducted Heating & Evaporative Cooling
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Gas Ducted Heating + Evaporative Cooling
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 Specifications
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
*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
^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.
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Related Gas Ducted and Evaporative Cooling Blog Articles
Melbourne Air Conditioning Install Locations
Melbourne residents looking to warm up during the cool winter months know they can rely on Coldflow for reliable heater installation. For over 50 years, Coldflow have provided quality installation and heater repairs across Melbourne's suburbs. Whether you're in Springvale, 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 and heater needs!
What Our Customers Are Saying
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.
ANNELISE B.
ROWVILLE
February 2023
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.
TINA M.
TEMPLESTOWE
June 2025
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.
ROSS Y.
MOUNT ELIZA
January 2025
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.
Will C.
ROMSEY
February 2025
Daniel Hay - Sales consultant was awesome and he recommended the best EvapCooling system for my double storey house. Installers were amazing. Did the best and clean job. Highly recommend ColdFlow for professional service and they are THE BEST in Melbourne. PERIOD.
PARAM C.
HILLSIDE
December 2023
Team did a great job, install team had to vary the installation location of parts, access etc, vs. communicated during the sales process. This is fine, just a note that worth getting feedback from your install team to your sales team to help future customer comms. The team kept the site clean and took away all rubbish which was great
CHARLIE H.
FAIRFIELD
April 2025
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 :)
WENDY L.
MALVERN EAST
August 2023
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.
ANGELA M.
RINGWOOD
February 2023
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.
Madeleine L.
KENSINGTON
September 2024
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!!
KATHLEEN K.
FERNTREE GULLY
May 2025
This is the second time we've used Coldflow, largely due to our positive experience the first time around. Sales process was quick and easy - very clear and helpful with advice and suggestions about what we needed. Installers were lovely - really polite, efficient and thorough. Cleaned up and explained everything. Will recommend to others.
ANDREW B.
BLACKBURN NORTH
August 2022
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!
ANDREW R.
MULGRAVE
February 2024
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.
LINA S.
MOOROOLBARK
July 2024
Once again Brodie excelled and organised a technician to come straight out to tend to a minor issue. No questions asked just great customer service as always. I highly recommended Brodie and the team at ColdFlow. After using them for the first time a few years ago we would not go anywhere else. A huge 'thank you' to everyone at ColdFlow ??
TRACEY S.
GARFIELD
February 2024
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.
DEBBY F.
CHELTENHAM
February 2023
We've had the team out on a few occasions now and they have been fantastic. Always on time, great communication and clearly experts in this field. I trust their work and advice and will continue to use Coldflow in the future. I'm already referring them to family and friends.
Richard J.
IVANHOE EAST
November 2024
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.
ROD P.
KILSYTH SOUTH
February 2025
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
STEPHEN G.
SURREY HILLS
December 2023
Daniel Hay, the person that measured up and provided the estimate was excellent. He was very professional and came across as very honest and trustworthy. The installer's were excellent on the day they just got on with the job and removed all the rubbish and vacuum up afterwards.
EDEN PARK
February 2023
My ducted air conditioning system was not working it had been installed by another company. I rang to try and get someone to diagnose my problem,on the same day a serviceman turned up and it was fixed for $275.00. Well worth it. Neil from Beaconsfield
NEIL S.
BEACONSFIELD
March 2024
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.
ROSINA G.
CRAIGIEBURN
July 2024
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.
MARIANNE S.
BALWYN
April 2025
I was especially happy with the happy with the airconditioner installed in my bedroom.I can highly recommend tle 2 young men who installed it. They were very polite, the airconditioner is well fitted, it works well and when cleaned up after their work. The office workers were helpful responding to calls and answering my questions.
ALMA K.
SOUTH MORANG
May 2024
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!
Ranjit K.
FOREST HILL
June 2023
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
TRACEY M.
BERWICK
November 2023
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.
STEPHEN R.
ROWVILLE
May 2025
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!
JOHN R.
TEMPLESTOWE
November 2022
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.
GREG C.
MULGRAVE
November 2023
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
JULIE B.
SAINT KILDA WEST
March 2024
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
BRETT G.
BRIGHTON EAST
January 2024
Chris Didcock was very friendly and reassured me that the issue would be rectified. However, our heater went back to fault mode after Chris left. As promised, Chris came first thing in the morning and reset the heating unit after being in contact with the manufacturer about the error code.
LYNDHURST
June 2024
The whole installation and mains connection went seamlessly, with only a very small 'mains disconnect' period, which was great as my son is currently WFH and had a very small unavailability time with work. Very happy with the whole process, from quote to installation.
Keith G.
HAMPTON PARK
February 2023
Jared came twice because we had a difficult set-up situation in a rear room with a box gutter. The solution worked out well. David and Daniel were professional and friendly installers who installed without fuss or mess. Sparky (Harold) was also efficient and easy to communicate with. My wife and I are very happy with the installation.
Andrew K.
HUGHESDALE
October 2023
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.
DANIELLE D.
BORONIA
October 2024
Our tech Ray did an outstanding job fixing our ducted heating system. It is very obvious that his experience makes him a valuable asset to Coldflow! Thanks for explaining every step of the repair so clearly & for your relaxed & friendly manner! Will 100% rebook a service as it is required down the track! Thanks again!
SEAN M.
DINGLEY VILLAGE
November 2024
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.
Debra K.
ASCOT VALE
April 2023
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.
MICHAEL A.
DINGLEY VILLAGE
November 2023
I received a welcome email reminder that a service was due and made a booking date to suit. Your technicians contacted me the day before to confirm a time and they arrived on time as promised. The work was carried out efficiently by two young men, Steven and Hilo, who did so with courtesy and good humour. They are a credit to your business.
AAFKO S.
HEATHMONT
October 2024
An excellent experience. The online was simple and efficient. The call out team were on time, clean uniforms, friendly and polite. Their work was excellent. Everything was made clear. I honestly couldn't fault my dealings with your firm, you should be very proud of the work you must have done to achieve this standard.
Richard S.
BRIGHTON EAST
July 2023
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!
Tess F.
COBURG
January 2023
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.
LINDA F.
CLYDE
January 2025
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!!
MARC P.
WOLLERT
January 2024
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!
MEGAN T.
LAUNCHING PLACE
June 2025
After 4 weeks of research, quotes & cold to replace split system I am very happy with Coldflow from Daniel coming to give quote, efficient installation by pleasant men & communication on phone. Cosy now with my bigger heating system as advised. Thank you. Would recommend you from my experience.
TRISH A.
BALWYN
July 2023
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.
ANDREW R.
ALTONA
February 2024
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
IAN G.
ASHWOOD
January 2024
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
KATHERINE V.
SCORESBY
November 2024
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
HEATHER J.
CROYDON
January 2025
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.
Patricia j.
PARKDALE
April 2023
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.
Geoff B.
WARRAGUL
November 2022
Why Choose Coldflow For Heating & Cooling?
Dealer Only Brands: Daikin, Breezair, etc.
Dealer Only Brands: Daikin, Breezair, etc.
