Ventilating Fans
S&PRF8-120EC
ENERGY STAR certified · Apr 2018
- Estimated annual energy use
- 19.4 kWh/yr
- Airflow
- 130 CFM
- Airflow per watt
- 4.9 CFM/W
Running cost calculator
Where your state sits among all 51
Cost to run a ventilating fan in every state
Replacing an old ventilating fan with this one? Savings calculator
How this is calculated
- ENERGY STAR lists the power this model draws but no yearly figure. We estimate the annual energy use ourselves, assuming 2 hours a day at its rated airflow, every day of the year. Your use will differ, so treat the cost as a guide.
- Yearly cost = annual kWh × your rate. Monthly cost is the yearly cost divided by 12, a flat average. Five-year cost keeps the rate constant; prices will change.
- Statewide averages are not your utility’s tariff. Use your bill’s rate for a closer number.
- We do not estimate watts or hourly cost: the source data does not include them.
How it compares
Among 29 ENERGY STAR certified in-line (single-port) models with a similar airflow (97.5 to 162.5 CFM), this one ranks 23rd lowest in annual energy use.
- Median of these models
- 14 kWh/yr
- This model vs the median
- +40%
- Uses less than
- 17% of them
Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.
Same type and size, lower energy use
| Model | kWh/yr | Difference |
|---|---|---|
| QuFresh QUF100X | 10 | 10 kWh |
| QuFresh FA100X | 10 | 10 kWh |
| Fantech FG 5 (40404) | 13 | 13 kWh |
| Fantech FGC 5 (40421) | 13 | 13 kWh |
| Systemair K 5 (40404) | 13 | 13 kWh |
Yearly cost by state
Same 19.400 kWh/yr at each state’s average residential price (2026-08).
Comparable models
Same type, within 25% of this model’s airflow.
Specifications
- Estimated annual energy use
- 19.4 kWh/yrOur estimate: listed airflow / CFM per watt, 2 h a day at the first speed setting, every day
- Airflow
- 130 CFMAirflow at the first speed setting
- Airflow per watt
- 4.9 CFM/WAirflow per watt at the first speed setting, as listed by ENERGY STAR
- Type
- In-line (single-port)
- Speeds
- 3 or more
- Duct size
- 6 inch diameter
- Sound level
- N/A sones
- Built-in light
- No
- Markets
- United States, Canada
- Available on market
- 2018-03-19
- ENERGY STAR ID
- 2343206
Customer reviews
Be the first to review this appliance.
Write a review
Frequently asked questions
How much electricity does the S&P RF8-120EC use?
ENERGY STAR lists the power this model draws but no yearly figure, so we estimate about 19.4 kWh per year, assuming 2 hours a day at its rated airflow, every day of the year. Your use will differ with how long the fan runs; some homes run a bathroom fan only for a few minutes, others around the clock.
How much does it cost to run?
At statewide average residential prices, the listed annual use costs about $2.47 in Nevada and $9.15 in Hawaii (EIA, 2026-08). Your own utility rate may be different; enter it in the calculator.
How does the S&P RF8-120EC compare with similar models?
Among 29 ENERGY STAR certified in-line (single-port) models with a similar airflow, it ranks 23rd lowest in annual energy use. Its 19.4 kWh per year is 40% above the median of 13.9 kWh.
How much air does it move?
ENERGY STAR lists 130 CFM at its first speed setting. Choose a fan whose airflow suits the room and the duct size.
What does CFM per watt mean?
It is the air moved per watt of power, so a higher number means more ventilation for the same electricity. This model is listed at 4.9 CFM/W.
Learn more
Methodology and sources
Model data comes from the ENERGY STAR Certified Ventilating Fans dataset (EPA). Electricity prices are statewide average residential prices from the U.S. EIA, latest period August 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.