An 18 cc inverter scroll unit with a quiet 46 dB claim and a brushless fan motor, priced in the middle of the 10,000 BTU field.
Amazon $501.19The KNOLET 12V 10000 BTU Split AC rates 2.9 among 12V split parking air conditioners; the KNOLET 24V 9200 BTU Split AC rates 2.5 among 24V split ones. The KNOLET 12V 10000 BTU Split AC costs $178.51 less ($501.19 vs $679.70).
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.

A quiet 18 cc inverter unit for 24 V trucks, at the highest price of the split units.
Amazon $679.70Scores side by side
These two sit in different type classes (12V split and 24V split), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | KNOLET 12V 10000 BTU Split AC | KNOLET 24V 9200 BTU Split AC |
|---|---|---|
| Overall rating | 2.9/5 | 2.5/5 |
| Value 35% | 40 $50.12 per 1,000 BTU ($501.19, 10,000 BTU) | 7 $73.88 per 1,000 BTU ($679.70, 9,200 BTU) |
| Efficiency 20% | 50 input power not published (neutral score used) | 50 input power not published (neutral score used) |
| Noise 15% | 76 46 dB listed for the indoor unit | 76 46 dB listed for the indoor unit |
| Features 20% | 25 1 of 4: inverter compressor | 25 1 of 4: inverter compressor |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| KNOLET 12V 10000 BTU Split AC | KNOLET 24V 9200 BTU Split AC | |
|---|---|---|
| Cooling and power | ||
| Claimed cooling | 10,000 BTU | 9,200 BTU |
| Supply voltage | 12 V | 24 V |
| Build | ||
| Layout | Split, two units | Split, two units |
| Compressor | 18 cc | 18 cc |
| Inverter compressor | Yes | Yes |
| Ships charged with refrigerant | No | No |
| Controls, noise and warranty | ||
| Indoor noise | 46 dB | 46 dB |