Model
Samsung QN55S90DAF
Rank #81 means 80 of the 172 television models we track cost less to run each year; the 45th efficiency percentile means it uses less energy for its size than 45% of those models.
What does the Samsung QN55S90DAF cost to run per year?
At about $34 a year, the Samsung QN55S90DAF lands in the middle third of television models we track on running cost, rank #81 of 172. Capacity-normalized, it ranks ahead of 45% of television models we track, right in the class's middle band. Its on-mode draw of 98.58 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 Samsung QN55S84FAF at $34/yr runs a little cheaper and the Samsung QN75QN90CAF at $34/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 QN55S90DAF's $34/yr adds up to roughly $238 in electricity alone, before purchase price or repairs.
By the numbers
The Samsung QN55S90DAF 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 $34/yr, here is what the Samsung QN55S90DAF 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 QN55S90DAF costs about $340. That is roughly $10 less than the class median, which would run closer to $350 over the same ten years.
How the Samsung QN55S90DAF compares
The television class we track runs from $3 to $117 a year. At $34/yr, it runs about $1 a year cheaper than the class median of $35, and it is about $31 a year more than the cheapest television to run at $3.
What drives its running cost
At 54.6 in, the Samsung QN55S90DAF is a mid-size television for its class, which spans 13.23 to 114.4 in with a median of 55 in, putting it squarely in the middle of the class on the size lever that drives most of the cost. 98.58 W is the on-mode draw behind this figure (the class spans 9.3 to 343.5 W); two otherwise similar TVs can differ here mostly on picture-mode defaults rather than panel technology.
- 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 QN55S90DAF cheap to run?
Roughly, yes. Its $34/yr figure is close to the class median, ranking #81 of 172, neither a bargain nor a splurge on running cost.
How much does the Samsung QN55S90DAF cost per month?
About $2.85 a month, which is the $34 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: 184 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $34 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Samsung QN55S90DAF for its size?
45th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 80 | Samsung QN55S84FAF54.6 in | $34 |
| 79 | Samsung QN55S85FAF54.6 in | $33 |
| 78 | Lg OLED55B4PU*54.6 in | $33 |
| 77 | Philips 65HFL6214U/2764.5 in | $33 |
| 76 | Samsung QN55S85HAE54.6 in | $33 |
Source
ES_1023593_QN55S90DAF_121820230432730_2283422View certified television listingsENERGY STAR data as of July 2026Samsung and QN55S90DAF 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.