Cooling & Heating
Services Mosman

The service person arrived when he said he would, did the service efficiently, quickly and respectfully. The explanation of what was done was clear and the information provided comprehensive.

The installer tidied up everything and paid attention to every detail. Very happy with the work.

They were all efficient and professional completing the whole Installation and gyprocking in one and a half days.

IF I CAN GIVE YOU A MILLION STAR RATING its not enough. Thank you to B.J, THEO, LUKE,PETER LIAM and the new guy working with Peter the electrician. Amazing customer service, excellent work outstanding professionalism and for most very respectfully. You guys are a great assest to Alliance climate control
THANK YOU FOR THE AMAZING WORK YOU DONE AND EXPLAINING EVERY STEP OF THE PROCESS.

Back in mid December 2025, the guys from ACC installed our air con and did a fantastic job. Liam was consultative throughout the quoting process. And thanks to Jono, Ben, Charles, and Aaron, the final installation of the indoor and outdoor units, as well as electrical work was delivered to a high standard of workmanship. They left everything clean and tidy, and we're very happy with their work.

It also doesn't hurt that they were friendly! Bonus points for being unfazed by our vocal little dog! Thanks guys!

Excellent service of multiple split systems by Emre and Connor. Very professional, friendly and thorough. Highly recommend and will definitely use Alliance again for next service.

Dylan was exceptionally good .. pleasant, knowledgeable, respectful and courteous .. a very good brand ambassador for Alliance

Great service experience. I needed indoor LEDs and pendants and power points replaced, as well as some outdoor lights. Josh provided a quote and Peter and TK did the work. They were efficient, courteous and communicated well. They left the premises in good order and were careful in my home. Very happy.

We are very pleased with the job Alliance has done.

Our new aircon multi- system was installed today. Very happy with the excellent service provided by Mike, Zac and Rodrigo. Polite, professional, helpful and on time. And definitely appreciated their thoughtfulness in working amongst our dogs for the last 2 days.

Highly professional installation of my Daikin split system. THANK YOU: Especially the installation team: BJ, Theo, Daniel, Kody and Luka (accounts)

Very approachable, explained the situation fully and was very competent. I needed two split systems serviced. Kody explained the main room split system needs to be replaced. BR system needed servicing including buildup at the vent line. He came Fri 6 Feb and Sat 7 Feb. New air con will be installed Mon Mon 16 Feb.

Good communication and services. We had our AC fixed on the hottest day and Steve & Nick did a great job replacing the fan motor. Highly recommended.

Took longer than expected but seems to be fine. This ratings system is a bit time-consuming (signing in etc).

Eastwood. Good work for Yunus, Carlos, Meedy team.

Chris did a great job. Friendly and very efficient and did a few extras like cleaning roof vents.

Mitiesh was responsible and thorough. He didn’t just do a quick fix, he checked the entire system to ensure everything was running safely. Very professional. Definitely recommend.

Jonathan & Eric were excellent. Very respectful and managed to do a tricky install of a new machine to update our old system that stopped working. They were efficient and did a great job, I would highly recommend Alliance and this team for any new aircon installations.

Alliance provides excellent services and a honest company. Jason is the best tradesman I ever see. He is very professional and friendly. He explain the issues and solutions very clearly. I certainly recommend Alliance and particularly Jason to anyone need aircon repair and service.
They are rare example of service companies should be.

We were very happy with the work undertaken by Dylan last week. He was very courteous and professional. He answered our questions very clearly and investigated the 2 issues we raised very thoroughly.

Andres from Alliance was excellent, professional and very clear. Our units are now operating perfectly and he detected a major issue and presented multiple solutions. Would recommend the service highly.

Air conditioning service found no problems. Dylan was excellent.
Electrical check found no problems. WAs also able to book for additional power points. Charles was excellent. Walked through all options.

One of the few vendors who did an on-site inspection before install and took into account my requirements. Gokhan, Louis and Nicholas did a great job with an installation of a split system to an upstairs bedroom. Routed relatively well to avoid outside challenges. Left everything nice and clean afterwards.

Thank you Tommy, Kim and James for your professional courteous service this week. Very efficient and neat work. Explained options well and provided the best solutions for our awkward house.

Such a great team from Alliance just installed my new air con - life changing! Thanks to B.J., Theo, Tim, Emre and in the office Peter, T.K. and Will

We had two visits to fix our aircon Kody and Mitiesh and the problem was resolved satisfactorily. Both guys were very polite, friendly and explained the problem with the aircon and how it was fixed. Very impressive

Charles & Mo from Alliance were great, they did a difficult installation perfectly and cleaned up afterwards as well. Will be using their services again in the future.

5 Star Service, fast, efficient, clean and a pleasure to deal with, from initial consultation with Kirk, follow up from Zac, and great work by installers Matt, Maran, Jono, Tom & Tom!

Update - latest review for the Electrical Safety Inspection on 29/12/25 and Electrical Work on 07/01/26.

We are very impressed with Joshua, Vash and Mohammed. So, we are giving each one of them 5 stars.  Joshua was very detailed and very systematic when he conducted the safety inspection last 29/12/25. Also, giving us practical tips about safety and to monitor the old power points. He also patiently explained the importance of getting the electrical system and smoke alarm up to code and all the things that needs to be replaced. He is also courteous in his behaviour and how he engages with us.

Vash and Mohammed arrived early for the electrical work on 07/01/26.  These young blokes are very thorough, they know what they're doing. They worked as a team and non-stop for several hours. They are also impressive, respectful, and polite. Before they left, they double checked everything and even vacuumed the dining chairs and floor to keep thing tidy. We learned a lot from them and how to use electrical extensions safely.

These young men ( Joshua, Mohammed and Vash )will go far. They arrived neat, clean looking and ready to do the job. They have a high standard in workmanship, dedication and most importantly they have the right attitude about their work and how they treat us.

Kindly let them know that even though they might think they just did the electrical work. For us, they did more than that, they contributed to our health and safety.

Please, don’t stop inspiring these young men to continue developing their trade. They are the kind of professionals that our society needs. Thank you. Jennifer from Macquarie Fields.
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Updated my review to include our recent service experience October 11, 2025 with Gabriel.

I want to share our recent experience with Gabriel, who provided a complete tune-up and service on our Fujitsu multi system last October 11, 2025. Overall, our experience was outstanding. My husband and I truly appreciate Gabriel’s dedication—his professionalism, expertise, and meticulous care stood out throughout the visit. He walked us through the air-conditioning health report, clearly explaining the tasks he completed and the performance of our air conditioner, while also offering practical and easy-to-follow maintenance suggestions that put our minds at ease.

Gabriel consistently demonstrates professionalism and a positive attitude toward his work, just as he did in January 2022. His respectful and polite manner made the entire process enjoyable. Thanks to Gabriel’s thorough service, we feel much more at ease knowing our air conditioner is in top condition and our home’s air quality is supporting a healthy lifestyle.

We are happy to recommend Gabriel to others, and we hope to see him again in another year or so. Thank you once again for your excellent service—Gabriel is truly deserving of 5 stars. Thank you, Gabriel.
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On the 19th of Jan 2022 an inspection was conducted by Gabriel. He was punctual and did a thorough inspection. He came back with Bailey for the AC cleaning and tune up on the 21st of Jan as per agreement. We have rated both of them 5 stars for the following reasons and base on our observations. Punctuality, tidy in appearance and work, very knowledgable with their trade, well mannered, they did a meticulous job in servicing our AC. Most of all, they were both efficient because they worked as a team. We are a very happy customer. Thank you Gabriel and Bailey.

The boys were so helpful, nothing was a trouble & they knew their stuff, very professional which made a great experience all round!

We are delighted with the level of service and the quality of the job. The technicians, Mitesh and Nick were fantastic

We have already referred one of our friends to Alliance

Alliance has done an amazing job from providing the solution , quoting and install by Vy and his team. The install was competed in one day with an even better outcome than originally designed. Well done to the entire Alliance Team and would highly recommend.

ACC was thorough and professional on their quote and their installation was all completed ahead of schedule. They made an effort to minimize the mess caused by the work and their cleaned up and hauled away all packaging. The AC has made our house a home!

Charles and Aaron arrived on time and were patient and professional while answering all of my questions. They provided clear, written quotes, explained exactly what was included and what wasn’t, and even suggested and implemented a solution on the same day for a problem that wasnt even part of the job they initially came out to do.

Extremely impressed with Shaby, Michael and Benjamin from Alliance. Professional AC installation work, polite and friendly and very helpful. I would highly recommend these guys and the costumer service team from Alliance .

From the very beginning I knew I would receive good service from this company. The lady that answered the phone ( Kayley I believe) was very efficient in assessing what I needed and organising a supervisor to come in and arrange quote. That was Alex - he was very straightforward and a very good salesman!! The service itself was also straightforward with two techs coming in (Mitiesh and Nick) and they just got on with it while dealing with a very curious pet! Overall a very positive experience and I will be signing up with them for regular maintenance and refer the company for anyone who has a similar issue that I had. Thanks

We were very pleased with the whole process. Thank you.

Service Technician arrived within the advised block time. He carried out the required service very efficiently and provided a written report of the condition of all aspects of the A/C and cleaned all the filters, unit cover and the outdoor unit. Very satisfied with a thoroughly professional performance.

Very proficient and easy Company to work with. Quality product and workmanship.

Had my ducted aircon serviced. Very happy with the professionalism from booking the appointment to service provided by Andre Galvis.