
Cars, trucks, tractors, mining and plant machinery. Mark Ostermann has been the bloke people around the coalfields ring when the air-con packs up, and most of the time he comes to the machine rather than the other way round.
Plenty of workshops will put a set of gauges on your car and give the air-con a squirt of gas. Fewer will pull a dash out to get at the heater box, make up a hose to length on the spot, or drive out to a paddock to sort a tractor that is not going anywhere.
That is the whole job here. Mark Ostermann Automotive Air-Conditioning is a specialist outfit in Kurri Kurri covering cars, trucks, tractors, mining and plant machinery, with the licences and refrigerant tickets to back it up.
If it has an air-conditioner and it has stopped being cold, it is worth a phone call.

No padding and no list of trades he does not actually do. This is the same list that is signwritten on the truck.
A regular service keeps the gas where it should be and the compressor doing easy work. Booked in, done, back on the road.
Blowing warm, cutting in and out, or making a noise it never used to make. Repaired properly rather than topped up and sent away.
A full air-conditioning system fitted to a vehicle or a machine that never had one, or a replacement for a system past saving.
Systems adapted to suit the machine and the way it actually gets used. Older gear, odd fitments and one-off setups included.
Finding the real fault first. Reviews here mention next-day bookings and problems pinned down fast, which is the point of doing it properly.
The van comes to the machine. Paddocks, job sites, farm sheds and yards, so the gear does not have to be floated in to a workshop.
Not sure which one it is? That is what the diagnosis is for.
0403 941 480Floating a backhoe or a dozer into town to fix an air-conditioner costs more than the repair. So the van turns up with the vacuum pump, the gauges, the scales and a generator, and the work happens where the machine is parked.
Dirt sites, farm sheds, paddocks and yards. It is the same standard of work as it would get on a workshop floor, just done on site.

A split air-con hose on an older machine is usually where a repair turns into a three week wait for a part that may not exist any more.
Not here. There are trays of fittings and ferrules in the van and a hydraulic crimper to match, so a hose gets made up to the right length with the right ends while you wait.
It is the difference between a machine back in the paddock this afternoon and one sitting idle until a part turns up.


Fittings, ferrules and the crimper that puts them together.
Gas that keeps disappearing means something is letting it out. Air that is cold at the vent but never cools the cab usually means something else again. Two of the photos below are what those jobs actually look like once the covers come off.

A condenser packed with dust cannot shed heat, so the system runs hot and the cab never gets cold. No amount of gas fixes that.

Some faults sit behind the whole dash. Taking one out and putting it back properly is a day nobody enjoys, but it is the only way to reach a heater box or an evaporator, and it gets done.
Mark had a fair idea of what the problem would be, booked it in for the next day, and it turned out to be exactly what he thought. The car was completed promptly and at a reasonable price. Great service.
Amazing work , no nonsense, found the issue extremely fast and had it fixed and regassed in no time, my car aircon has been perfect. Highly recommend.
Mark is a master of his trade. No BS, he will tell you if there is a problem. He'll also have your AC shooting ice cubes for a good price. Highly recommend this man's services
Diagnosed and fixed my cars air conditioning in under 24 hours and got me to come back when he heard a noise and fixed it straight away. Great knowledge, service and price. Would definitely recommend
Handling refrigerant legally in Australia takes a licence, and repairing vehicles for a living takes another one. They are printed on the ute for anyone who wants to check them, so they are printed here too.
Mark Ostermann Automotive Air-Conditioning Pty Ltd, ABN 48 627 468 571.



Tell him what the vehicle or machine is and what it is doing, and he will tell you whether it is a quick one or a proper job.
145 Deakin St
Kurri Kurri NSW 2327
Saturday mornings included, which is when most people notice the air-con is not working.
Prefer to write it down? Leave the details here.