Heating and Cooling - Box HillDias Air are experts in installation and repair of all residential heating and cooling systems in and around Box Hill. We have been operating for almost ten years and have established ourselves as a market leader for residential and light-commercial heating and cooling services, from our outstanding customer service and product knowledge, to our highly trained technicians and quality workmanship.

If you’re in need of a heating or air conditioning system, get in touch for a quote today.

Why choose Dias Air?

  • Licensed Plumbers – Member of Master Plumbers Association
  • Family owned and operated
  • Quality workmanship and attention to detail
  • 24 / 7 + emergency availability
  • 6 Year Guarantees on Work
  • Operate across Melbourne, including Box Hill
  • Highly competitive pricing
  • Reliable and on time

We pride ourselves on our reputation for providing excellent service and quality solutions to our customers, and offer a 100% customer quality assurance.



Dias Air provides the following services, including installation, maintenance and repair:

  • Evaporative Cooling
  • Split systems
  • Ducted Split Systems
  • Add On Cooling
  • Gas Heating

What do our services cover?
Heating & cooling installation – We’ll recommend the most suitable fit for specific your needs and budget, and provide competitive pricing for the best system.

Maintenance – maintenance is an important part of prolonging the life of your heating or cooling unit, to reduce break-downs and also reduce the build-up of allergens. We can perform maintenance on all systems in your home.

Air conditioning & heating repairs – Most systems will break down or malfunction at some point in time, and when that happens it can be a real inconvenience. Dias Air can offer 24 / 7 emergency repair availability in those times of need – we’re just a phone call away!

If you’re not sure what sort of heating and cooling system would best suit your home, then simply give us a call and one of our friendly technicians will come out to provide you the best advice for your needs.

Contact us today for a free quote, same day appointments available.


No matter which brand you have or prefer, we can work with any brand or system on the market, including: ActronAir, Boair, Braemar, Brivis, Carrier, Fujitsu, Mitsubishi, Panasonic and more.


We’ve worked hard to establish our quality reputation – when you work with Dias Air you get the following:

  • Family owned and operatedDias Air - Member of Master Plumbers Australia
  • Licensed Plumbers
  • Member of Master Plumbers Association
  • 24 / 7 + emergency availability
  • 6 Year Workmanship Guarantees
  • Highly competitive pricing
  • Operate across Melbourne

Work with the best in the business – call us today.

Heating and cooling systems - installation and repair in Box Hill