Senville Aura 24,000 BTU
#4 in 24,000 BTUFull review
A cold-climate unit sold online by Senville that keeps most of its rated heat at 5 °F and heats to −22 °F. Parts cover is 5 years, half the compressor’s 10.
Senville $1,799.99$1,799.99
The Senville Aura 24,000 BTU rates 4.3 among 24,000 BTU mini-splits; the Senville Leto 18,000 BTU rates 2.8 among 18,000 BTU ones. The Senville Leto 18,000 BTU costs $800 less ($999.99 vs $1,799.99).
Senville Leto 18,000 BTU
#20 in 18,000 BTUFull review
Senville’s budget line, for cooling and mild winters: it stops heating below 5 °F, and the 5-year warranty needs a licensed installer.
Senville $999.99$999.99
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (24,000 BTU and 18,000 BTU), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Senville Aura 24,000 BTU | Senville Leto 18,000 BTU |
|---|---|---|
| Overall rating | 4.3/5 | 2.8/5 |
| Cold weather 40% | 80 keeps 83% of its heat at 5 °F, heats down to -22 °F | 13 keeps 61% of its heat at 5 °F, heats down to 5 °F |
| Efficiency 30% | 85 13.5 HSPF2, 21 SEER2, COP 2.34 at 5 °F | 50 9.6 HSPF2, 19.2 SEER2, COP 2.15 at 5 °F |
| Warranty 20% | 87 10-year compressor, 5-year parts | 49 5-year compressor, 5-year parts |
| Noise 10% | 50 indoor noise not published (neutral score used) | 76 indoor unit from 24 dB(A) |
Specifications
| Senville Aura 24,000 BTU | Senville Leto 18,000 BTU | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 24,000 BTU | 18,000 BTU |
| Cooling at 95 °F | 24,000 Btu/h | 18,000 Btu/h |
| Heating at 47 °F | 29,000 Btu/h | 18,800 Btu/h |
| Heating at 17 °F (max) | 23,200 Btu/h | 14,800 Btu/h |
| Heating at 5 °F (max) | 24,200 Btu/h | 11,500 Btu/h |
| Heat kept at 5 °F | 83% | 61% |
| Price per 1,000 Btu/h at 5 °F | $74 | $87 |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 13.5 | 9.6 |
| SEER2 | 21 | 19.2 |
| EER2 | 13 | 10.8 |
| COP at 5 °F | 2.34 | 2.15 |
| ENERGY STAR | ENERGY STAR Cold Climate | Not ENERGY STAR |
| AHRI certificate | 215735298 | 215735290 |
| Operating range | ||
| Heats down to | -22 °F | 5 °F |
| Installation | ||
| Installed by | Professional (sold through installers) | Professional (sold through installers) |
| Line set connection | Flare fittings (vacuum pump needed) | Flare fittings (vacuum pump needed) |
| Line set | up to 164 ft | up to 98.4 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-454B | R-454B |
| Indoor unit | SENA-24HF-IGG | SENL-18CD-ILL |
| Outdoor unit | SENA-24HF-OG | SENL-18CD-OL |
| Build | ||
| Indoor noise | - | 24–50.5 dB(A) |
| Outdoor noise | - | 56 dB(A) |
| Wi-Fi | Built in | Built in |
| Room size (maker) | - | up to 1,000 sq ft |
| Weight | - | indoor 24.5 lb / outdoor 72.3 lb |
| Warranty | 10 yr compressor, 5 yr parts | 5 yr compressor, 5 yr parts |
| Warranty with DIY install | No, a licensed installer is required | No, a licensed installer is required |