Whynter’s dual-hose portable air conditioners are a favorite for large rooms, garages, and RVs. The ARC-14S is a cooling-only powerhouse, while the ARC-14SH adds heating capability for year-round use. Both units are highly efficient, but understanding the SACC rating, hose system, and heating technology is key for 2026 buyers.
Main Difference Between ARC-14S and ARC-14SH
The ARC-14S is designed solely for cooling and dehumidification. The ARC-14SH includes a 13,000 BTU electric heating function, making it suitable for winter use. Both models share Whynter’s dual-hose system, which prevents negative pressure and ensures faster cooling in real-world conditions.
Quick Comparison Table: Whynter ARC-14S vs ARC-14SH
| Feature | Whynter ARC-14S (Cool Only) | Whynter ARC-14SH (Heat + Cool) |
|---|---|---|
| Real Cooling (SACC) | 9,500 BTU | 9,500 BTU |
| ASHRAE Rating | 14,000 BTU | 14,000 BTU |
| Heating Mode | ❌ No | ✅ 13,000 BTU (Electric Resistance) |
| Hose System | Dual-Hose (High Efficiency) | Dual-Hose (High Efficiency) |
| Dehumidifier | 101 Pints/Day | 101 Pints/Day |
| Best For | Servers, Garages, Summer Use | Year-Round Apartments / RVs |
Design and Build Quality
Both units feature sturdy plastic housing with top-mounted controls. The dual-hose design ensures faster cooling by pulling fresh air from outside and expelling hot air efficiently. The ARC-14SH adds an electric heater for winter use, making it a versatile year-round solution.
Cooling Performance & SACC Ratings
While the ASHRAE rating for both units is 14,000 BTU, the SACC (Seasonally Adjusted Cooling Capacity) is 9,500 BTU — the real-world output in an average room. Thanks to the dual-hose system, the units feel more powerful than some higher-BTU single-hose competitors, as they avoid negative pressure that draws warm air into the room.
Heating Function (ARC-14SH)
The ARC-14SH uses an electric resistance heater for its 13,000 BTU heating mode. Unlike heat pumps, it works even in freezing temperatures, making it reliable for winter use. Pro Tip: This system consumes more electricity than a heat pump but guarantees consistent warmth.
Portability & RV Use
Both units are portable, but the dual-hose brackets require vertical window space.
- Note for RV Owners: Ensure your RV window can accommodate the dual-hose bracket, which is taller than standard single-hose kits.
Energy Efficiency & Dehumidification
Both units remove 101 pints of moisture per day and maintain room temperature efficiently. The dual-hose system reduces negative pressure and increases overall energy efficiency compared to single-hose units.
Final Verdict
The ARC-14S is ideal for summer cooling, garages, and server rooms. The ARC-14SH is perfect for year-round apartments or RVs, providing heating and cooling in one unit.
Pro Tip: If the price difference is less than $50, always go for the ARC-14SH. Even if you don’t need heat today, the resale value is higher, and it provides an emergency backup if your central furnace fails.
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