I bought a new NH T4.75 4wd with cab last July/Aug somewhere along there, I've got about 120 hrs on it. AC works great, its got plenty of vents that you can open or close and I've worked the tractor on some 90+ degree days and only had to run the AC fan on 2 and its very quite and can hear the radio very well with no problems. I've changed the engine oil and filter and its no problem but I have not fooled with any of the fuel system yet. I'm very happy with the tractor so far!