No idea about the newly redesigned Wolf AG ranges, but one of our criteria after returning the poorly designed and poorly functioning Jade range, was one with a very quiet fan, and an on/off switch for said fan as well, was preferred. Our 2008 (?) Wolf AG has a pretty quiet fan, and we only switch it on for convection, or to facilitate cooling down on super hot days, or after lengthy/high temp oven use.

Is anyone familiar with this brand of hoods. i know they make good small appliances and are new to the large appliance market. I am specifically interested in their 36" hood http://delonghimajorappliances.com/products/show.php?pid=1019&catid=26&subcatname=Pro%20Style%20Range%20Hood Would appreciate any advice. Also, its noise level is listed at 7 sones. I assume that's at the highest setting. How loud is that for a range hood? Thanks!

Most abnormally loud fan noise is due to faulty installs---which comes under your installer's warranty, not the manufacturers. Your installer should have been there when the service rep came so they could put their heads together. Fixing the problem is his issue. If you can't get him back out to diagnose, then you may have to pay for another HVAC person to diagnose the issue.

I have had a 30" Bluestar range for for about 13 years now, and have lived with what was intermittent but now constant loud grinding noise when the convection fan is turned on. I "tightened things" a couple of years ago, but just today said enough is enough...it is coming apart and I am fixing this. I found the source of the noise and it took about 45 minutes for me to fix it. First you need to completely remove the fan motor, and you do this through the oven. There is no need to move the range. Although it is always recommended that you disconnect the power before working on electrical components, I did not. Take it for what it is worth. 1. Remove the convection fan shield (4 sheet metal screws) 2 Remove the fan motor housing (4 machine screws) 3. Tilt out motor housing and then disconnect the wires- label the motor so you can reconnect them properly. Once the motor/fan assembly is out, take a look at the back side of the assembly and inspect the backside fan that keeps the motor cool. Do the fan blades contact any of the three motor support brackets? Mine contacted one of the supports and it was clear that I needed to re-position the fan. Mine was easy to re-position by moving the tension/compression washer from the oven side of the assembly to the motor side. Here is how I did that. 1. Remove the convection fan (the nut is opposite threaded so righty-loosey), Remove washer and spring clip with needle nose pliers---careful---it can "sproing" away! 2. Remove the square cover (4 machine screws secured by 4 nuts on the back) 3. Remove the insulation from the square box (use a knife to probe to the bottom and pry it up) 4. Remove the three machine screws that attach the motor support arms to the square box and remove box (Mark the orientation...It needs to go back the same way) 5. Now you are down to the backside fan. Remove the spring clip that secures the top washer(again...don't let it "sproing" away). Then remove the flat washer and compression washer from the oven side of the shaft. 6. You can now remove the backside fan. It is a tight fit and some light oil, a small file, some fine abrasive sandpaper may be needed to smooth the shaft to be able to pull off the fan. Wear gloves and gentle pressure will get it off. Be creative, but I didn't need any special pullers. Rotating the shaft with the nut back on while holding onto the fan also helps to work it up the shaft. 7. With the backside fan off, take a moment to file down the contact point on the motor support bracket just a little, for good measure. I did this to the small ridges on the support arm that were being contacted, but I did not file the structural part of the arm lest I weaken it. 8. Re-position the compression/tension washer from the oven side of the fan to the motor side of the fan, just on top of the washer on the shaft, which is just on top of another spring clip (you don't need to remove those. By re-positioning the tension washer, you effectively move the backside fan ever-so-slightly toward the oven side and away from the support arms. 9. Put the fan back on the shaft in the same orientation, but this time on top of the tension washer, then place the second washer and spring clip back on. Spin the fan to make sure it doesn't contact any of the arms. Yes, it will wobble, and that is ok. The tension washer doesn't/can't keep the fan true to the shaft...but again, it won't matter as long as it isn't contacting any fixed surfaces. 10. Re-assembly is the reverse. Moving that tension washer was all the clearance I needed to have a near-whisper quiet fan....Finally after all these years!