SamFansar 4000 BTU Camping AC
The cheapest unit here, for a small tent or a sleeping cab.
Amazon $229.98$229.98
The SamFansar 4000 BTU Camping AC is the better battery-powered portable air conditioner overall, rated 3.8 to 3.5. The SamFansar 4000 BTU Camping AC leads on value. The MEGAWISE RZ 618-3 wins on efficiency. The SamFansar 4000 BTU Camping AC costs $292.91 less ($229.98 vs $522.89).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
MEGAWISE RZ 618-3
A small 110 V cool-and-heat unit for a tent or truck cab, sold by Amazon itself.
Amazon $522.89$522.89
Which should you buy?
- Choose the SamFansar 4000 BTU Camping AC for value ($57.49 per 1,000 BTU ($229.98, 4,000 BTU) vs $109.46 per 1,000 BTU ($522.89, 4,777 BTU)).
- Choose the MEGAWISE RZ 618-3 for efficiency (11.4 BTU per watt (420 W rated) vs 10 BTU per watt (400 W rated)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 110 V AC for power stations battery-powered portable air conditioner; a clear win is highlighted. How we rank explains each one.
| Factor weight | SamFansar 4000 BTU Camping AC | MEGAWISE RZ 618-3 |
|---|---|---|
| Overall rating | 3.8/5 | 3.5/5 |
| Value 30% | 100 $57.49 per 1,000 BTU ($229.98, 4,000 BTU) | 63 $109.46 per 1,000 BTU ($522.89, 4,777 BTU) |
| Efficiency 25% | 75 10 BTU per watt (400 W rated) | 100 11.4 BTU per watt (420 W rated) |
| Noise 15% | 70 46 dB rated | 50 noise rating not published (neutral score used) |
| Weight 10% | 60 29 lb | 50 weight not published (neutral score used) |
| Warranty 20% | 0 warranty not published, scored as none | 0 1-year warranty |
Specifications
| SamFansar 4000 BTU Camping AC | MEGAWISE RZ 618-3 | |
|---|---|---|
| Cooling and power | ||
| Cooling capacity | 4,000 BTU | 4,777 BTU |
| Heating capacity | - | 2,730 BTU |
| Rated cooling power | 400 W | 420 W |
| Power input | 110 V AC | 110 V AC |
| Battery | Not included | Not included |
| Size and noise | ||
| Weight | 29 lb | - |
| Noise | 46 dB | - |
| App control | No | No |
| Warranty | ||
| Warranty | - | 1 year |