Our Services

Stewart and Holland provide exceptional service in Dairy Farm Refrigeration, Air Conditioning, Heat Pumps, Ventilation Systems, General Electrical and Appliance Repairs.  


Dairy Refrigeration Specialists

Stewart & Holland provide options for dairy farm refrigeration and process cooling, offering solution packages for farms with herds up to 2000 plus cows.

  • Milk silo refrigeration 
  • Pre cooling design 
  • Water chillers for milk cooling 
  • Hot water recovery 
  • Electronic expansion valves 
  • Ice bank/Snap chilling 
  • Consultation design services 

The team at Stewart & Holland have been working with the local dairy industry since the 1970’s, and the local team are familiar with the modern day sophisticated needs of dairy farmers and the rural sector. Being based in the heart of Mid Canterbury ensures that the team are never out of reach when urgent servicing and maintenance is required

Refrigeration Expertise

Stewart & Holland work closely with a wide range of organisations and services such as; bars, bottle stores, velvet freezers, seed coolers/freezers, slushy machine, walk in freezers and chillers and your local dairy drinks coolers. Also suppliers and service large water chiller used in industrial plastics industry. The team’s expertise and experience also allows them to be the preferred sub contractor, main contractor and franchise operators on a local level.

  • Commercial chiller rooms 
  • Commercial freezer rooms
  • Freezer cabinets 
  • Industrial cooling systems 
  • Water chilling systems 

Air Conditioning

Stewart & Holland are Mid Canterbury’s largest installer of air conditioning, having installed over 5000 units locally. Offering both commercial and domestic air conditioning solutions, and installing of the following;

Commercial air conditioning and fresh air systems

  • VRF Commercial systems 
  • Ducted, Hi-Wall, Cassettes, Under ceiling split systems 
  • Air handlers for chilled or hot water systems 
  • Centrally controlled systems 
  • Building management systems 
  • Underfloor hot water systems 
  • Roof top package systems 
  • Design build options 
  • IQP registered for SS9 mechanical services & Air conditioning system Mitsubishi, Toshiba, Daikin

Domestic Air Conditioning

  • Hi walls 
  • Floor Consoles 
  • Cassettes  
  • Ducted 
  • Underfloor heat pumps 
  • Hot water heat pumps 
  • Suppliers of Mitsubishi, Toshiba & Daikin heat pumps

A tailored design and installation package, taking care of your concepts and plans, alongside optional independent peer reviewed proposals will ensure the package and offering will be to the best solution to meet your needs.


Ventilation Systems

Large commercial ventilation is another service offered by Stewart & Holland. The team are experienced at installing and maintaining ventilation systems in large, commercial environments. Optional peer reviewed systems are available for all concepts and plans, ensuring the ventilation installed is tailored to your needs and the most appropriate option available:

  • Extraction systems 
  • Fresh air systems 
  • Heat recovery 
  • IQP registered for SS9 mechanical services & Air conditioning systems

A tailored design and installation package, will ensure the best solution to meet your needs. Stewart & Holland are a member of the Climate Control Companies Association, ensuring the team is completely up to date with the latest in industry developments and training. 

Electrical and Appliance

High Quality Electrical Connections

The specialised team of Qualified Electricians at Stewart & Holland are skilled at providing fast and efficient wiring solutions. Membership of the Electrical Contractors Association of New Zealand, allows you peace for mind the workmanship to the best standard. 

Stewart & Holland are the preferred electrical contractor for large commercial processing companies and medical providers, making sure operations run as smooth as possible with minimum downtime. 

The business is also an approved local contractor for Schindler Building Lifts, and also undertakes electrical installations for large commercial sites.

  • Electrical wiring 
  • Data wiring         
  • Electrical servicing 
  • Appliance and white ware servicing 
  • Infra red camera – Thermography 

Underfloor heating

Central heating is a method of whole-home heating in which warm water circulates through a closed network of pipes, carrying heat around the home. The heat source warms the water circulated through the pipes that lead to radiators or to the pipes laid in the floor for underfloor heating. Underfloor heating can be installed into new homes and retrofitted into existing homes.

House can be heated via

  • Underfloor pipes in concrete
  • Radiators on the wall
  • Ceiling/wall panels
  • Water is generally heated by heat pumps or boilers
  • Very efficient way of heating cooling the whole house


Are you tired of escalating power bills? Are you seeking a sustainable energy solution that benefits both your pocket and the planet? Look no further!

At Stewart and Holland Ashburton, we provide top-tier solar panel installation services for homes and businesses across Mid Canterbury. Switching to solar energy offers numerous benefits, including significant savings on electricity bills, a reduced carbon footprint, and contributing to a cleaner environment.

Many major banks offer 1% loans for solar installations, making it even more cost-effective. Achieve energy independence by generating your own power, while also increasing the value of your property and attracting potential buyers.

Member of the SEANZ – Sustainable Energy Association New Zealand

Thermal Imaging

Infrared thermography is the collection and analysis of radiated electromagnetic energy in the infrared portion of the electromagnetic spectrum. It measures radiated energy given off from the first 1/1000 of an inch of an objects service.

Mainly for use for Industrial & Commercial Clients

  • Switch boards
  • Preventative Maintenance
  • Buildings  – Heat loss
  • Insurance

It is becoming an important part of maintenance to detect early signs of odd thermal patterns within switchboards, plant and equipment and can determine if your building is insulated efficiently. Early detection of finding faults can minimise downtimes or loss of production or even failure.

Insurance companies are now also recommending or even stating to have it done in some cases.