I replaced all three of the far-too-often-used junk Broan 688/689 fans in my house with one SLM70 and two SLM50s.
Actually, I purchased a super quiet (and fairly expensive) 80cfm Panasonic fan at first, but then realized there's no room for it in the attic due to the proximity to other structures, including the furnace.
Delta SLM-series are exact same size as Broan 688/689 fans, uses the same 3" pipe, and even the vent is located at the same location as the Broan fans. I imagine it was intentionally designed that way.
Some reviewers wrote that the job can be done from under the ceiling. If you're installing a new fan, or if the existing fan is not screwed into the joist from the side panels (two wings in the enclosure), then it's probably possible. But if the two wings are screwed into the joist, I don't see how you can unscrew them from under the attic without enlarging the hole on at least one side. One side may be reachable through the vent hole after you temporarily remove the fan module from the enclosure. I planned to replace all three fans at the same time, so I went all out and did it from the attic. I even caulked the corners to make it as air tight as possible.
Tip: Remove the fan module before installation, and then reinstall it after the enclosure and wiring are in place. It's much easier to work with the light-weight enclosure, and you also avoid damaging the fan module. It also allows you to screw the enclosure to a joist from under the ceiling.
I was shocked to read Broan's own spec sheet stating that their 50cfm model consumes 108 watts!!! Their 60cfm model? 180 watts! I assume those are measured with the fan in open air environment, but still, those are some shocking numbers! No wonder they're so noisy. The motors on the Delta fans are marked 16 watts (SLM70) and 8 watts (SLM50). Actual power consumption is lower under non-zero static pressure environment. Delta spec states 13.1 and 11.5 watts for SLM70 with 0.1 and 0.25 static pressure, moving 70cfm and 54cfm respectively.
I used SLM50s in a small toilet-only room and in a small laundry room. Plenty good enough for those uses. The SLM70 was installed into a small bathroom with a tub+shower. Due to the convoluted path the vent pipe takes, it's not able to move anywhere close to 70cfm, but it is barely enough to keep up with a hot shower. Note I live in a desert climate (dry all year long). I imagine it won't be enough in a humid climate. Remember, the vent pipe design is almost as important, if not more important, than the fan's cfm rating. Regardless, it is no worse than the Broan 688/689 for sure, so keep that in mind.
Finally, quietness is somewhat subjective because noise level numbers don't say anything about the quality of the noise.
These slim Delta fans aren't the quietest fans in the world, but I believe they are the quietest given their small profile size. And quiet they are! I do not hear the fan at all while I'm taking a shower. And the noise they make is mostly just smooth fan noises, instead of the irritating rattly rumble of the Broan fans. Basically, I'm loving these. Sure if I could, I'd love to have the <0.3 sones rated fan, but given the space constraint, I have no complaints at all with these fans.
Frequently bought together
$54.99
Get it May 21 - 23
Only 20 left in stock - order soon.
Total price:
To see our price, add these items to your cart.
Choose items to buy together.
Similar items that may deliver to you quickly
Page 1 of 1 Start overPage 1 of 1
From the manufacturer
- Energy savings up to 85%
- 1 sone – The quietest ever in a 7.5" x 7.25" bath fan
- Exceeds ENERGY STAR requirements by 458% in energy efficiency
- UL listed for both ceiling-mount and wall-mount installation
Delta Breez Ventilation Fans. Perfectly Quiet. Perfectly Green.
Super Low Profile. Super Low Energy Consumption.
Weighing in at less than 5 lbs, the powerful yet compact Delta BreezSlim sets the bar for performance in the popular small fan size of 7.2” x 7.25" x 3.94". Operating at just 1.0 sone, this quiet fan features Delta’s super reliable DC brushless motor, and an LED indicator light so you know it’s running, and a modern grille design. Perfect for retrofit into an existing space or for ceiling mount or wall mount installation (UL listed for both) into your next multifamily or single-family project. BreezSlim breaks the mold of the everyday bathroom exhaust fan.
The BreezSlim SLM70 features innovative DC brushless motor design for long life, low noise, and low power consumption. It's UL approved for ceiling and wall mount installation. LED indicator will be green when power is on.
CFM (Cubic Feet per Minute)
CFM is speed of 'air flow' - the amount of air extracted per minute when the fan is running. The amount of CFM needed is generally related to the size of area ventilated. More info on how to choose the right airflow at www.hvi.org/publications/HowMuchVent.cfm
Energy Savings
*Calculations based upon U.S. average retail electricity. Actual results may vary.
Sone Level is how loud the fan is to the human ear. Doubling the sone value means doubling the noise. The average 80 CFM bath fan runs at 0.8~2.5 sones. Delta Breez 80 CFM fans run as low as <0.3 sones. At less than 0.3 sones, the fan is virtually silent.
 |
|
|
|
|
|
|---|---|---|---|---|---|
| BreezSignature | BreezSlim | BreezGreenBuilder | BreezSmart | BreezRadiance | |
|
|
|
||||
| Customer Reviews |
— |
673
|
16
|
226
|
828
|
| Price | — | $50.92 | — | $176.51 | $127.18 |
| Description | Light, dual speed, motion sensor, and humidity sensor available in select models. | Fan only | Light, dual speed, motion sensor, and humidity sensor available in select models. | Light, dual speed, motion sensor, and humidity sensor available in select models. | Fan/light combo with heater |
| Air Flow (CFM) | 80-130 | 50-100 | 50-100 | 130-150 | 80 |
| Duct Size | 4" | 3" or 4" options | 4" | 6" | 4" |
| Motor | DC | DC | DC | DC | DC |
| Noise (Sones) | <0.3 - 1.3 | 0.6 - 2.0 | <0.3 - 1.4 | <0.3 | 1.3 |
| Energy Use (Watts) | 7.2 - 19.1 | 6.4 - 14.5 | 3.8 - 13.9 | 11.6 - 16.9 | 10.5 |
| Energy Efficiency (CFM/Watt) | 7.1 - 11.0 | 5.8 - 9.4 | 6.8- 13.1 | 8.8 - 11.2 | 7.6 |
| Electric Bill Estimate | $7.57 - $20.08 | $6.73 - $15.25 | $3.96 - $14.50 | $12.10 - $17.63 | $11.04 |
| ENERGY STAR Qualified | Yes | Yes | Yes | Yes | Yes |
| ASHRAE 62.2 Compliant | Yes | All models except SLM50 | All models except GBR50, GBR50L | Yes | Yes |
Videos
Page 1 of 1Start OverPage 1 of 1
Videos for this product
0:21
Click to play video
Customer Review: Motor is louder than expected
Chris Gard
Videos for this product
2:30
Click to play video
Bath Fan Replacement Solution
Merchant Video
Videos for this product
1:08
Click to play video
HvacRepairGuy 2024 Delta Brand Bath Fan Reviews
HvacRepairGuy
Compare with similar items
This Item  Apple Barrel DELTA ELECTRONICS (AMERICAS) LTD. BreezSlim SLM70 70 CFM Exhaust Bath Fan, Silver |  |  |  |  |  | |
| Price | -40% $54.99 List: $92.00 | $39.99 | $77.43 | $69.00 | $129.99 | -13% $69.99 List: $79.99 |
| Delivery | Get it May 21 - 23 | Get it as soon as Wednesday, May 22 | Get it as soon as Wednesday, May 22 | Get it as soon as Wednesday, May 22 | Get it as soon as Wednesday, May 22 | Get it as soon as Wednesday, May 22 |
| Customer Ratings | ||||||
| Easy to install | ||||||
| Noise level | ||||||
| Energy efficiency | ||||||
| Sold By | MDC Deals | Iconikal | Amazon.com | BV INTERNATIONAL | Pattern Professional | LIGHTEX |
| air flow capacity | 70 cubic feet per minute | 70 cubic feet per minute | 80 cubic feet per minute | — | 110 cubic feet per minute | 100 cubic feet per minute |
| number of speeds | 1 | 1 | 1 | — | 3 | 1 |
| material | Alloy Steel | Alloy Steel | Metal | Stainless Steel | — | Alloy Steel |
| controller type | Button Control | Button Control | Button Control | Button Control | Switch | Button Control |
| mounting type | Wall Mount | Embedded | — | Wall Mount | Ceiling Mount | Ceiling Mount |
| collection | Electric Fans for Home Use | Bathroom | Bathroom | Bathroom | Bathroom | Bathroom |
| wattage | 13.1 watts | 25 watts | 16.2 watts | 25 watts | 15 watts | 23 watts |
| voltage | 120 volts | 120 volts | — | 120 volts | 120 volts | 120 volts |
Reviews with images
Good value, difficult install
Install:I replaced a much older broken fan. The install was a challenge because this unit did not leave much room for flexibility and the overall housing was much smaller than my old unit. I had to build a custom bracket to fill the gaps and lift the housing up to the previous ducting connection. Overall this is not an amateur install.Sound levelsRefer to the picture I posted. I calibrated my phone microphone to 0dB prior to taking measurements. Notice a spike in sound around the 15 second mark, that's the click of the fan switch and then notice the dB begin to rise from 0 to around 34. All I can say for sure is that the fan runs about 34dB louder than ambient noise in my bathroom. It is quieter than the old fan but not the quietest fan I have.
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Top reviews from other countries
M. Church
Quiet and it works
Reviewed in Canada on March 4, 2021Size: 70 CFMStyle: Fan OnlyVerified Purchase
