Changhong LCD40G7NA9
Uses less electricity than 4% of the 4,993 TVs, 32–42″ on the EU register. At your selected price (European Union) that is €19 a year, €194 over ten years.
- Power, SDR
- 47.0 W
- Typical 32 W
- Running cost
- €19 / year
- 4 h a day
- Power, HDR
- 47.0 W
- 1.0× SDR
Uses more than most comparable models: 96 % of them need less. Sylvox MT40G3K1CA, the most efficient alternative on sale, saves about €12 a year. 93% of comparable models reach a better class than G; the most common is E. On-mode power in SDR is 47.0 W; the typical screen of this size draws 32.0 W. Changhong has 6 models in this group; this one is number 5 among them. On the register since 2021 and still on sale.
Where it stands
Rank 4,739 of 4,993 TVs, 32–42″ by yearly consumption. 4,738 use less.
Next to it in the ranking
- Kunft K5418H40F 69 kWh same
- Nikkei NI40FG7NA9 69 kWh same
- Changhong LCD40G7NA9 69 kWh
- Hisense 40A5120F 69 kWh same
- Saba SA40S67A9 69 kWh same
What it will cost you
| Period | LCD40G7NA9 | MT40G3K1CA | Difference |
|---|---|---|---|
| 1 year | €19 | €7 | −€12 |
| 5 years | €97 | €35 | −€62 |
| 10 years | €194 | €70 | −€124 |
| 15 years | €291 | €105 | −€186 |
Is the more efficient model worth its price?
Enter both purchase prices to see the total cost of ownership.
Power in SDR and HDR
Cost by viewing time
| Use | kWh / yr | € / yr |
|---|---|---|
| 2 hours a day | 34 | €10 |
| 4 hours a day | 69 | €19 |
| 8 hours a day | 137 | €39 |
Same size, lower running cost
On sale, at least 10% less energy, same size group
| Model | kWh / yr | Saves / year |
|---|---|---|
| Changhong LCD40G7NA9 (this model) | 69 | — |
| 25 | €12 | |
| 25 | €12 | |
| 26 | €12 | |
| 36 | €9 | |
| 38 | €9 |
Label and product sheet
- Energy class SDR / HDR
- G / G
- On-mode power SDR
- 47.0 W
- On-mode power HDR
- 47.0 W
- Standby / networked standby
- 0.5 W
- Screen diagonal
- 40″
- Resolution
- 1920×1080
- Panel
- LED LCD
- Refresh rate
- 60 Hz
- Spare parts (minimum)
- 7 years
Model numbers and history
Registered by Changhong under one model number.
LCD40G7NA9
- Placed on the EU market
- First published in the EU register (EPREL)
Questions
How much does the Changhong LCD40G7NA9 cost to run?
At 4 hours a day it uses about 69 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €19 a year, or €194 over ten years.
Does HDR use more electricity?
Yes. In HDR mode this screen draws 47.0 W instead of 47.0 W, 1.0 times as much. The yearly cost on this page uses SDR, as the label does.