5 Best Rooftop Air Conditioning Units 2026 in the United States

The Dometic Penguin II 13,500 BTU Low Profile Rooftop Air Conditioner stands out due to its sleek design and high cooling capacity, making it a good fit for anyone needing reliable cooling in an RV. At 13,500 BTUs, it provides sufficient cooling power for most recreational vehicle spaces. The low profile design, at just over 11 inches high, is excellent for reducing wind resistance and improving aerodynamics, which can be beneficial while driving.

This unit can be installed in both ducted and non-ducted applications, offering flexibility based on your RV’s setup. It requires an inside ceiling assembly and control kit that are sold separately. In terms of noise, the specifications mention an incredibly low noise level at 1 dB, though this seems unusually low and may not be accurate.

The unit has a SEER of 2.75, which is on the lower end, indicating it may not be the most energy-efficient option available. It operates at 120 volts and has a wattage of 1731, so it should be compatible with most RV electrical systems without issue. Weighing 99 pounds, it's fairly manageable for installation, though it may require two people to handle safely. This air conditioner is best suited for RV owners looking for a low-profile, high-capacity unit and who are prepared for potentially higher energy use and additional installation components.

The TOSOT GO Cool RV Air Conditioner offers a substantial 15,000 BTU cooling capacity, making it suitable for RVs ranging from 16 to 24 feet and spaces up to 600 sq ft. This unit also features a powerful 12,000 BTU heating capacity, ensuring comfort in both hot and cold climates. With an Energy Efficiency Ratio (EER) of 8.5, it delivers efficient performance, which is beneficial for energy consumption but does not qualify for Energy Star ratings.

Its noise level is relatively moderate at 52 dB, which is acceptable but not exceptionally quiet. The inclusion of smart WiFi control allows for convenient operation via smartphone, adding to its user-friendly design. Installation is straightforward due to its non-ducted configuration, fitting standard rooftop vent openings, though it is not compatible with RVs with ductwork. The unit's versatility in handling outdoor temperatures from 23°F to 115°F makes it suitable for various climates.

On the downside, it is somewhat heavy at 112.4 pounds and has relatively high annual energy consumption at 4526 kWh. The TOSOT GO Cool RV Air Conditioner is a solid choice for those seeking efficient cooling and heating in flexible climates, especially if ease of installation and smart control are priorities.

The ASA Electronics ACM135 Advent Air rooftop air conditioning unit offers a cooling capacity of 13,500 BTUs, making it suitable for most medium-sized RVs and similar applications. It operates on 115 Volt AC power and features a sturdy, metal-constructed base pan, ensuring durability.

The unit includes a premium, watertight vent opening gasket with six dense foam support pads, which helps to prevent leaks and provides additional stability during operation. The installation process is relatively straightforward, fitting standard 14.25" x 14.25" vent openings, and there’s an optional plug-in heat strip available if heating is also required. One of the notable features is the three-speed fan, providing flexibility in airflow control.

The unit uses R 410A refrigerant, which is common and effective in cooling applications. Maintenance is simplified with a washable filter, which can be easily cleaned and reused. The unit is relatively heavy at 50 pounds, which may require assistance during installation. In terms of climate compatibility, the 13,500 BTU capacity should be sufficient for moderate climates, but may struggle in extremely hot conditions. This rooftop AC unit is best suited for users looking for a reliable and moderately powerful cooling solution for their RVs or similar applications.