Model
Samsung QN55QN90FAF
Rank #91 means 90 of the 172 television models we track cost less to run each year; the 37th efficiency percentile means it uses less energy for its size than 37% of those models.
What does the Samsung QN55QN90FAF cost to run per year?
Among the 172 television models we track, the Samsung QN55QN90FAF's $36/yr running cost ranks it #91, close to dead center. Size-adjusted, this model trails most of its class on efficiency, ahead of just 37% of television models we track. Its on-mode draw of 102.38 W is the number ENERGY STAR measures directly and the one this running-cost figure is built from.
Immediately around it on the leaderboard, the Lg OLED55C4PU* at $35/yr runs a little cheaper and the Lg 55LX1TPU* at $36/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A television typically stays in service for somewhere around 7 years; over that span, the Samsung QN55QN90FAF's $36/yr adds up to roughly $252 in electricity alone, before purchase price or repairs.
By the numbers
The Samsung QN55QN90FAF normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $36/yr, here is what the Samsung QN55QN90FAF adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Samsung QN55QN90FAF costs about $360. That is roughly $10 more than the class median, which would run closer to $350 over the same ten years.
How the Samsung QN55QN90FAF compares
The television class we track runs from $3 to $117 a year. At $36/yr, it runs about $1 a year above the class median of $35, and it is about $33 a year more than the cheapest television to run at $3.
What drives its running cost
At 54.6 in, the Samsung QN55QN90FAF is a mid-size television for its class, which spans 13.23 to 114.4 in with a median of 55 in, right in the middle of the capacity range, so capacity is roughly a wash compared with the rest of the class. Its on-mode power draw of 102.38 W (the class spans 9.3 to 343.5 W) is the direct input into the running-cost figure, and the picture-brightness setting you choose is the single biggest lever you control over it day to day.
- On-mode brightness. On-mode watts, the figure ENERGY STAR measures at the factory picture setting, can differ a lot from what a TV actually draws once you change the picture mode.
- Screen size. Screen size is the single strongest predictor of a TV's on-mode wattage, ahead of panel technology or brand.
- Hours of use. Running cost compounds with hours of use, so this figure is really a per-hour rate multiplied by a standard viewing assumption, not a fixed annual bill.
Common questions
Is the Samsung QN55QN90FAF cheap to run?
Roughly, yes. Its $36/yr figure is close to the class median, ranking #91 of 172, neither a bargain nor a splurge on running cost.
How much does the Samsung QN55QN90FAF cost per month?
About $2.99 a month, which is the $36 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 193 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $36 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Samsung QN55QN90FAF for its size?
37th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 90 | Lg OLED55C4PU*54.6 in | $35 |
| 89 | Xitrix XPN-DSA655065 in | $35 |
| 88 | Sansui LE-65KA164.6 in | $35 |
| 87 | Lg OLED55G6WU*54.6 in | $35 |
| 86 | Lg 75QNED82AU*74.5 in | $35 |
Source
ES_1023593_QN55QN90FAF_01202025080045_9728370View certified television listingsENERGY STAR data as of July 2026Samsung and QN55QN90FAF are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.