Model
Samsung QN85QN90DAF
Rank #169 means 168 of the 172 television models we track cost less to run each year; the 2nd efficiency percentile means it uses less energy for its size than 2% of those models.
What does the Samsung QN85QN90DAF cost to run per year?
Do the math and the Samsung QN85QN90DAF's $72/yr puts it at rank #169 of 172, in the bottom five percent on cost for its class. Adjusted for size, it is only more efficient than 2% of television models we track, among the lowest size-adjusted results we track for the class. At 181.05 W in on-mode, its power draw is a direct input into that running-cost figure.
Immediately around it on the leaderboard, the Lg OLED83C5P** at $70/yr runs a little cheaper and the Samsung QN83S95FAE at $74/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 QN85QN90DAF's $72/yr adds up to roughly $504 in electricity alone, before purchase price or repairs.
By the numbers
The Samsung QN85QN90DAF 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 $72/yr, here is what the Samsung QN85QN90DAF 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 QN85QN90DAF costs about $720. That is roughly $370 more than the class median, which would run closer to $350 over the same ten years.
How the Samsung QN85QN90DAF compares
The television class we track runs from $3 to $117 a year. At $72/yr, it runs about $37 a year above the class median of $35, and it is about $69 a year more than the cheapest television to run at $3.
What drives its running cost
At 84.6 in, the Samsung QN85QN90DAF is a large television for its class, which spans 13.23 to 114.4 in with a median of 55 in, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up. At 181.05 W on-mode (the class spans 9.3 to 343.5 W), its power draw is what ENERGY STAR actually measured to produce this running-cost figure; brightness settings move that wattage more than screen size alone.
- On-mode brightness. The picture mode you leave a TV on, vivid or eco, moves its real-world wattage more than almost anything else you control directly.
- Screen size. A bigger panel needs more backlight or more emissive pixels to reach the same brightness, so energy use climbs with diagonal screen size across most panel technologies.
- Hours of use. ENERGY STAR's on-mode wattage figure assumes a standard number of hours per day; a TV left on longer than that, or used as ambient background noise, accumulates more of that hourly cost.
Common questions
Is the Samsung QN85QN90DAF cheap to run?
Not especially. At $72 a year it ranks #169 of 172 television models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Samsung QN85QN90DAF cost per month?
Roughly $6.03/mo, spreading the $72/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 390 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $72 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Samsung QN85QN90DAF for its size?
2nd percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 168 | Lg OLED83C5P**82.5 in | $70 |
| 167 | Lg OLED83G5***82.5 in | $70 |
| 166 | Lg OLED83G6WU*82.5 in | $69 |
| 165 | Samsung QN83S95HAE82.5 in | $69 |
| 164 | Lg OLED83C4PU*82.5 in | $67 |
Source
ES_1023593_QN85QN90DAF_121720230809791_6225934View certified television listingsENERGY STAR data as of July 2026Samsung and QN85QN90DAF 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.