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Availability:
In Stock.
Arrives
Thursday, Nov 5
At a glance
- Condition
- New
- Size
- 80CFM with Humidity Sensor
- Model
- TD-BF-04H
- Dimensions
- 7.5"D x 7.25"W x 6"H
- Color
- white
- Material
- Metal
- Electric fan design
- Exhaust Fan
- In the box
- Cord
Features 5
- Very quiet bathroom fan (1.5 sones) and Strong air movement (80CFM) for bathroom up to 85 Sq. Ft
- Easy-to-Install: No cut housing with no attic access installation and replaces most small bathroom standard fans using existing opening. it can be done entirely from the room-ceiling side no attic access needed installation.Please note that the housing height of this fan is 6 inches. If you replace an old fan with a housing height of 4 inches, make sure that the ceiling is installed deep enough before replacing.
- Two operation options: 1. Manual mode-The RED LED indicator lights, the fan will run continuously in this mode. 2. Humidity sensing mode- The LED indicator light will be green. In this mode the fan will automatically turn on when the humidity level in the room is above 60%
- Housing size: 7.5in x 7.25in x 6in with 4in duct. ceiling mounting Opening: 7.6in x 7.3in. Efficient and quiet,excellent motor perfomance, working at least 25000 hours
- Energy Star qualified, UL and HVI certified for performance assurance.Acceptable for use over a bathtub or shower when installed in a GFCI-protected branch circuit.
Description
How to choose your Bathroom Fan? What is a sone rating? Sones, or the sone rating, is a term used to describe sound levels. Lower sone ratings are found on quieter fans. Higher sone ratings indicate a louder bathroom fan. What is CFM? CFM (Cubic Feet per Minute) measures fan air movement. CFM increases as air movement increases. A higher CFM is best for a larger bathroom; a lower CFM may be adequate for smaller spaces. TD-BF-01 110CFM1.0Sones. Ventilating for bathroom up to 110 Sq. Ft TD-BF-02 90CFM0.8Sones. Ventilating for bathroom up to 90 Sq. Ft TD-BF-03 70CFM2.0Sones. Ventilating for bathroom up to 75 Sq. Ft TD-BF-04 80CFM1.5Sones No Attic access Needed Installation,Ventilating for bathroom up to 85 Sq.FT TD-BF-04H 80CFM1.5Sones with Humidity sensor, Ventilating for bathroom up to 85 Sq.FT TD-BF-05L 70CFM2.0Sones with LED light ventilating for bathroom up to 75 Sq.FT. TD-BF-06 70CFM0.3Sones ventilating for bathroom up to 75 Sq.Ft TD-BF-07 110CFM0.8Sones with Humidity sensor ventilating up to 110 Sq.Ft TD-BF-08L 80CFM1.5Sones with LED light Ventilating for bathroom up to 85 Sq.FT TD-BF-09L 80CFM2.0Sones with LED light, Ventilating for bathroom up to 85 Sq. FT TD-BF-10 110CFM1.2Sones with No Attic access Needed Installation,Ventilating for bathroom up to 110 Sq. FT TD-BF-11 90CFM1.5Sones with Ventilating for bathroom up to 90 Sq. FT TD-BF-12L 90CFM1.5Sones with LED light Ventilating for bathroom up to 90 Sq. FT TD-BF-13 50CFM1.0Sones DC Motor with No Attic access Needed Installation,Ventilating for bathroom up to 50 Sq. TD-BF-14L 50CFM1.0Sones LED light Ventilating with No Attic access Needed Installation,Ventilating for bathroom up to 50 Sq. TD- BF-15L 110CFM1.2Sones LED light Ventilating with No Attic access Needed Installation,Ventilating for bathroom up to 110 Sq.
Specs 36
| Brand | Tech Drive |
|---|---|
| Color | white |
| Electric fan design | Exhaust Fan |
| Power Source | ac |
| Style | Modern |
| Product Dimensions | 7.5"D x 7.25"W x 6"H |
| Room Type | Bathroom |
| Special Feature | Humidity sensor |
| Recommended Uses For Product | Ventilating |
| Mounting Type | Ceiling Mount |
| Special Features | Humidity sensor |
| Controller Type | Wall Switch |
| Noise Level | 1.5 sones |
| Wattage | 20 watts |
| Air Flow Capacity | 80 cfm |
| Voltage | 120 V AC |
| Switch Type | Push Button |
| Indoor Outdoor Usage | Indoor |
| Control Method | Touch |
| Number of Power Levels | 1 |
| Motor Type | DC Motor |
| Installation Type | Ceiling mount |
| Material | Metal |
| Blade Material | Plastic |
| Specification Met | HVI, UL |
| Finish Type | Painted/Powder Coated (White) |
| Collection Name | Bathroom Fans |
| Item Dimensions D x W x H | 7.5"D x 7.25"W x 6"H |
| Size | 80CFM with Humidity Sensor |
| Brand Name | Tech Drive |
| Model Name | bathroom fan with Humidity sensing |
| Model Number | TD-BF-04H |
| UPC | 798250854343 |
| Number of Packs | 1 |
| Unit Count | 1 Count |
| Part Number | TD-BF-04H |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Nov 5
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Good quiet fan. You can DIY it from below, but there are always challenges.
Size: 80CFM with Humidity Sensor
I was lured by the low sone rating, the humidity sensor, and "No Attic Access Needed." It is very quiet, and I can verify that you can install it from below, i.e., without attic access. The humidity setting seems to work. I have now installed four of these. There is little on this fan to accommodate installing it from below as when replacing an existing fan. Just a few holes in the metal box. I admit to having installed the fan without reading the instructions first; I do that. As it turned out, I fumbled through figuring out what the instructions would have told me. I did install the fan as intended, but I'm handy enough. Nevertheless, this was a challenging project. I would have only been a little faster if I'd read the instructions. So... If installed from above, it is intended to be held in place by "ears" that stick out from the body of the box; you can see one in the picture. There is no way to install the fan from below using those ears for support. You can't get there. So to attach the fan from below, you'll need to remove the fan mechanism from the housing so you can attach the housing. Here's what I did. I removed the existing fan, which was held in place by the same kind of "ears" as mentioned above. But you likely can't reach them easily. I had to pry the ears loose from below with a pry bar. Then I was able to remove that existing fan housing from below. Noting that there was no way to use the "ears" on the new fan, I cut them off. That's not necessary, but they won't help you putting the fan through the hole in your ceiling. I removed the fan mechanism from the housing box by removing two brackets, brackets that both hold the fan's mechanism in place and provide slots for the grille to attach to. Fortunately, there are three screw holes in the back of the box on the side where it attaches to the joist. But before attaching your box up in the ceiling, there are two things you need to do. First, you connect your wiring, and for that you'll need some sort of stress-relief collar for your house wire to go through. It shouldn't just go through a hole in the sheet metal; vibration will eventually cut through the insulation. So, get a stress-relief gadget (there are several kinds) and hook up. Awkwardly, you'll have to do this up on your ladder with no other support for the metal box. Your stress-relief gadget might be able to hold the box up once you clamp it on the wire, and it will help that it will be hanging there. Next, you'll have to hook up the exhaust pipe, and that can be a trick. The exhaust of your new fan is 4", but my exhaust pipe was 3", so I needed a reducer, and the reducer I bought wouldn't fit on either end. I had to cut it, force it together, and duct-tape it in place. Before connecting the exhaust pipe, you'll need to push the fan's metal box up into the ceiling. But I was working in an area with insulation falling out of it, and my exhaust pipe was not really long enough. If I let go of it, it retreated into the insulation. It was a mess; I could have used a 3" coupler to add a little length. After getting the wiring and the piping all hooked up and hopefully stable, you then put three screws through the holes in the back of the box. That's not easy; it's not a big box. I used a small ratchet screwdriver, straining to get the screws in far enough that the heads wouldn't prevent the fan mechanism from sliding into place. I finally managed to push the fan mech up into the box, where I secured it with the brackets I mentioned earlier. That was harder than I expected. Wear gloves; sheet metal can cut your hands to pieces. After all that, I was gratified that the fan worked and it IS quiet! Nice! And I didn't damage the sheetrock so much that the grille couldn't cover it. Done! I didn't expect this to be easy; I've replaced several fans, and it never is easy, probably a 2-trip job (trips to the hardware store). Attic access obviously isn't required, but maybe it could have flanges and ears that you can easily use from below. As I say, the instructions describe how to attach the box, but I figured that out. I'm an engineer, after all, and we're notorious for not reading instructions. ;) Update: I bought another of these to continue replacing the OEM fans in the bathrooms in this house. There's always a learning curve, and the first is the most difficult, especially if you don't read the instructions (ahem). The second one went up in a matter of hours. This one, though, didn't have solid wood backing, only the bottom rail of an i-beam joist. Yuck. So, none of the three pre-drilled holes in the back of the box could do me any good, and I had to drill three holes near the bottom of the box for attaching. No fault of this fan, but that arrangement didn't provide enough support. On subsequent installations with the I-beam joist, I installed a board on the I-beam to give my fan more support. Someday I may revisit the one without enough support, but I'm tired of fiddling with them for now. One more thang: I chuckle at instructions that underplay how difficult a small step is to execute. In this case the final step (snapping on the grille) can be exasperating. Instructions say where to feed the wire springs through, but it can be a struggle to get the springs to expand into place they need to go to flatten the grille out on the ceiling. All I could figure to do was to be persistent. Be careful not to let one of the wires get into the fan; it will make an awful noise.
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Reviewed in the United States on June 15, 2026 by PowerClyde
Very quiet efficient fan!
Size: 80CFM with Humidity Sensor
Great fan for small bathroom. No issues installing as a replacement. I am impressed on how quiet it is. Goes a great job!
Reviewed in the United States on March 21, 2026 by Kandace C. LaBlank
Humidity sensor doesn't work
Size: 80CFM with Humidity Sensor
Got this fan for the humidity sensor, was quite disappointed that it randomly turns on and doesn't turn off even when the humidity is well below the threshold. Customer service is excellent, they were able to send me a brand new fan without humidity sensor. If you do purchase this unit there's a chance that it may not work. Just stick with the standard on and off bath fan.
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Reviewed in the United States on July 26, 2026 by Pinhead Larry
Great fan!
Size: 80CFM with Humidity Sensor
I’ve been using the Tech Drive Quiet 80 CFM fan for a little while now, and I’m really happy with it. It’s super quiet—much quieter than I expected—and doesn’t bother me even when it’s running all day. The compact size is great for fitting into smaller spaces without taking up too much room. It works well to keep the air moving and feels efficient for its size. The only reason I’m giving it 4 stars instead of 5 is that I wish it had a few more speed settings or some additional features, but overall it does exactly what I need. If you want a quiet, no-fuss fan that fits small spaces, this one’s a solid choice.
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Reviewed in the United States on July 22, 2025 by itsonlyme
Humidity Sensor is not reliable
Size: 80CFM with Humidity Sensor
After couple mounts it starts to run continuously regardless of humidity. Go with a fan that you can set humidity sensitivity.
Reviewed in the United States on July 13, 2026 by Saint
Super quiet
Size: 80CFM with Humidity Sensor
Whisper quiet! Love it.
Reviewed in the United States on January 10, 2026 by Jason
Great product
Size: 80CFM with Humidity Sensor
Great for our bathroom Reno. Great price point
Reviewed in the United States on April 23, 2026 by Em.and.Eli.Co
This wasn't Very Quiet for me.
Size: 80CFM with Humidity Sensor
Giving this 3 out of 5 stars cause this wasn't Very Quiet for me. I'm sure it's a very nice Bathroom Fan, but it was only a little bit quieter then the old one it was replacing. Bought 4 of these for my new place I got, they will be going back. Going to try a Panasonic Whisper Choice next time.
Reviewed in the United States on June 11, 2026 by Zach S.