Dometic RV Air Conditioners

The FreshJet 3 Series delivers reliable performance at a budget-friendly price. It’s a straightforward rooftop AC designed for smaller RVs and weekend warriors who want dependable cooling without the extra features or cost of inverter systems.

BTU Range: 13,500 BTU
Best For: Entry-level RVs and small campers

Standard cooling for smaller and mid-size RVs

FreshJet 3 Series BTU Options: 13,500 BTU

The Series 3 does not currently list 11K or 15K BTU variants.

The Dometic FreshJet 4 is a high-capacity, top-mount ducted rooftop air conditioner with heat pump, available in 13,500 and 15,000 BTU versions. It fits the standard 14 x 14 inch roof opening.

Ceiling assembly and thermostat are sold separately. Free shipping on all new air conditioners.

The FreshJet 5 Series is today’s most common Dometic rooftop AC, offering traditional BTU sizes and a low-profile design. It’s the go-to choice for replacing older units like Penguin II or Brisk Air without modifying your RV. Simple, powerful, and cost-effective.

BTU Range: 11,000 • 13,500 • 15,000 BTU
Best For: Most travel trailers, 5th wheels, and Class C RVs

The FreshJet 5 Series includes traditional BTU sizes RV owners expect.

BTU Rating Notes

11,000 BTU - Efficient cooling for small/medium rigs

13,500 BTU - Most common “standard RV AC” size

15,000 BTU - High-capacity model for large RVs or extreme heat

FreshJet 5 Series BTU Options: 11,000 – 15,000 BTU

This is the series MOST RV buyers look for when replacing an existing rooftop AC.

The FreshJet 7 Series is Dometic’s newest, quietest, and most energy-efficient RV air conditioner line. Using inverter technology, it delivers smoother, faster cooling with dramatically reduced noise and power draw. Ideal for modern RVers, solar setups, and anyone who wants premium comfort on the road.

BTU Range: 7,500 – 12,000 BTU
Best For: Full-timers, boondockers, luxury rigs

Dometic lists these by watt cooling capacity, but their BTU equivalents are:

FreshJet 7 Lite / 7 Series inverter~2,200 W7,500 BTU

FreshJet 7 Mid-size~2,600 W9,000 BTU

FreshJet 7 High-capacity~3,500 W12,000 BTU

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These are inverter-style units sized for modern, energy-efficient RV systems.

The FJX7 Series takes inverter performance even further with higher output options, improved temperature control, and available heat pump functionality. It’s one of Dometic’s top-tier systems, perfect for RVers who want high-efficiency cooling paired with electric heating.

BTU Range: 7,500 – 12,000 BTU
Best For: Large RVs, extreme climates, tech-forward RVers

These are the more powerful inverter models with heat pump capabilities.

ModelCooling Output (W)BTU Equivalent

FJX7 22002,200 ~ W7,500 BTU

FJX7 26002,600 ~ W9,000 BTU

FJX7 35003,500 ~ W12,000 BTU

FreshJet FJX7 Series Approx BTU Range: 7,500 – 12,000 BTU

They do not come in large 13.5K or 15K BTU because inverter systems achieve similar performance with lower watt/Btu ratings due to controlled compression cycles.

The Dometic Blizzard NXT RV Air Conditioner has been replaced by the FreshJet series.

The Dometic Penguin II RV Air Conditioner was replaced by the FreshJet 5 Series air conditioners.