The Q-Ton is a CO2 Hot Water Heat Pump manufactured my Mitsubishi Heavy Industries. It is an ideal solution to decarbonise the production of Domestic Hot Water in commercial buildings.

The Q-ton is capable of producing Domestic Hot Water supply at up to 90°C. Full capacity is maintained down to -7°C ambient and the equipment operates down to -25°C. A Single Q-Ton can produce 500L of 60°C hot water in an hour from a mains cold water supply.

CO₂ is a non-flammable natural refrigerant with a GWP of 1 and is outside the scope of the F-Gas Phase down. Significant operating cost savings can be made by switching from fossil fuel powered systems to a Q-Ton solution in addition to a reduction in CO₂ emissions.

Each building is different and we work with the manufacturer to produce a design and equipment selection to optimise the system efficiency while ensuring that all Domestic Hot Water demands can be met.

The equipment is WRAS certified and comes with remote monitoring for efficiency and preventative maintenance.

Q-ton Resources

Q-ton Air to Water Heat Pump

Our Technology Partners


David O'Brien


As Contracts Director and Co-founder of Crystal Air Ltd, David’s key area of responsibility includes the management of all installations ensuring projects are delivered from inception to client handover and to a high industry standard.

David has 35 years experience in the air conditioning industry and has been involved in project applications using Close Control systems, Chillers, VRV and DX systems. David has extensive experience in managing data centre projects across Ireland & Europe.

He is also a member of the Institute of Refrigeration Ireland. David is also directly responsible for Health & Safety and quality procedures are adhered to at all times while keeping up with the ever changing Health & Safety legislation.


Caroline Campbell


Caroline graduated with a Bachelor of Business (Honours) from Athlone Institute of Technology in 2005. She joined Crystal Air that year to work within our Service & Maintenance Department and having been previously promoted to Manager of this department she was appointed Director of Service & Maintenance in 2014 with responsibility for the growth and development of the department.

Her key role is the management of our existing customer relationships whilst ensuring that our customer expectations are exceeded through our planned preventative maintenance programmes and 24/7/365 reactive call-out and support service. Caroline also has responsibility for ensuring that our ISO accredited quality standards are adhered to and maintained throughout all departments within Crystal Air.


Domnick Ward


Domnick is the MD and founding partner of Crystal Air and is responsible for business development and key client relationships. His hands on approach keeps the team focused on new products and promotes innovation to find better engineered solutions while maintaining a healthy environment.

With over 30 years experience in the industry Domnick still enjoys the challenges here and abroad with input into our offices in Ireland, Holland and Finland. He is an active member of IRI and member of ASHRAE and a past chair of F-Gas IRI sub group and founder of FGR in Ireland. He also enjoys travelling and is known to play a round of golf.