Soler & Palau S&P TD-100 Inline Duct Exhaust Fan

This is a great little unit. I had the usual noisy, inefficient, annoying fan in my bathroom. I simply removed the fan from inside the housing, leaving the original housing and grill in place, and mounted this fan remotely in the attic in the original 4" exhaust duct. I wired this unit back to the power in the original housing. It works like a charm and all I can hear is the air flow through the system.

I have been looking a long time for a low speed 4 inch fan, and this is by far the best I have found at a reasonable cost. Very quiet, simple hook-up. It would be very nice to get more specs before ordering-I had to test it to see how many watts it actually uses. I guess "Energy Star" is all you are supposed to know.I also ordered a Tamarack speed control from Amazon and it was cheaper than the Tamtech.com website,but neither place gives any energy info on this either.I even called, but couldn't locate any knowledgeable people.It gives you great confidence when even the makers don't want to give information. The control works, but is such a small difference in energy savings it's not worth the cost (3 watts, whoppee!)2 stars on the Tamarack.

This seems to be a well made quiet Exhaust fan. It came with wiring instructions for low or high speed operation. I didn't give it a 5 star rating for one reason: It is described as a 4"/100 mm fan. One would assume that the tubular ends would be 4", but they are not. The ends measure 97mm in diameter--an odd size that does not mate with 4" ID PVC tubing. Fortunately, I have a lathe and was able to create two thin rings to make up the difference. But, if you do not have a way to make the ends 4" dia., then you will perhaps have to wrap them in multiple layers of tape until they fit. It's a shame that this problem was allowed to happen to an otherwise nice product.

The TD-100 is only suitable for installation in an already noisy area or in a sound proof area (like a well insulated attic). According to the company the TD-100 is 1.1 SONES. In addition, note that the high and low CFMs in the description are not errors. For all practical purposes the low and high settings are identical. The solution to both these problems appear to be the TD-100xs model. I unfortunately have two of these in our family room. I put one in an attic above a ceiling with 12.5 inches of foam insulation and had to mount one behind a cabinet because of space considerations. The noise from the one in the attic is muffled by the foam. The one behind the cabinet is to loud to watch TV comfortably in the family room. I will try one of the TD100xs models to see if it is tolerable. The TD100-xs is reported to be 0.6 SONES. A word of caution, the TD100-x model is reported to be 1.7 SONES. I got the noise numbers from a very helpful guy at SP USA named Jerry. If you have any questions, you should give them a call before purchasing.

I replaced this model fan in my house in June 2013. The house was 2 1/2 years old. The fan installed in 2013 is making noise like the previous did before it went out. This is being used as a crawl space vent, so it runs 24/7. The space is consistently cool and never gets over 80 F, so it's not overheating. The space has good ventilation, so back pressure should not be an issue. I really would like to get more than 2 1/2 years from these, but they are extremely quiet until they start to go out and the price is not bad. So far they are hitting me at about $4.60 per month in cost + electricity.

Works fine.

This is a very well built fan, the construction is super solid. The fan is well balanced and moves the air very nice and also very quiet. You will need your own power cord and wire it yourself but that no big deal. I have 1 other fan by another manufacturer and I can be close (2 feet) to this fan running but all I hear is the other fan that is 7 feet away. You get what you pay for and this is just super!

A high quality fan. Very quiet. We tested CFM. Was around 160! That was on about 10 feet of 4" pipe on the inlet side. The wiring instructions differed from the actual wiring. Seems like a change to the instructions may be in order. Still figured it out, so no big deal. Again, real nice!