Model
Samsung QN75QN90CAF
Rank #82 means 81 of the 172 television models we track cost less to run each year; the 81st efficiency percentile means it uses less energy for its size than 81% of those models.
What does the Samsung QN75QN90CAF cost to run per year?
The Samsung QN75QN90CAF costs about $34 a year to run, a middle-of-the-pack figure at rank #82 of 172. Efficiency-wise, once capacity is accounted for, it beats 81% of the class, a solidly strong result rather than a size-driven fluke. At 138.97 W in on-mode, its power draw is a direct input into that running-cost figure.
Immediately around it on the leaderboard, the Samsung QN55S90DAF at $34/yr runs a little cheaper and the Samsung QN55S90FAF at $35/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 QN75QN90CAF's $34/yr adds up to roughly $238 in electricity alone, before purchase price or repairs.
By the numbers
The Samsung QN75QN90CAF 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 QN75QN90CAF 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 QN75QN90CAF 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 QN75QN90CAF 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 74.5 in, the Samsung QN75QN90CAF is a large television for its class, which spans 13.23 to 114.4 in with a median of 55 in, among television models, bigger capacity is the most common reason a running-cost figure lands on the high side, all else being equal. 138.97 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. 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 QN75QN90CAF cheap to run?
It is about average. At $34 a year it ranks #82 of 172 television models we track, close to the middle of its class on running cost.
How much does the Samsung QN75QN90CAF cost per month?
Roughly $2.84/mo, spreading the $34/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 184 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $34 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Samsung QN75QN90CAF for its size?
81st percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 81 | Samsung QN55S90DAF54.6 in | $34 |
| 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 |
Source
ES_1023593_QN75QN90CAF_010620230452209_9554040View certified television listingsENERGY STAR data as of July 2026Samsung and QN75QN90CAF 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.