6 Best Budget RV Air Conditioner Replacement Options in 2026: A Practical RV Guide

Juliba is an 18,000 BTU non-ducted rooftop unit with a heat pump, so one purchase handles summer cooling and cool-weather heating. A 50 dB running level and operation in outdoor temperatures starting at 23 degrees Fahrenheit, which widens the seasons the coach is comfortable.

It sits at the top of this shortlist on price, matching the Arsenda units, and the money buys the heat pump and a larger 18K rating than the 11,000 to 15,000 BTU Dometic models that the shroud picks serve. The housing is UV-resistant to survive sun, road vibration and weather.

This is the right choice for a buyer who is done repairing an aging unit and wants to replace it outright with a quiet, year-round upgrade on a non-ducted ceiling.

Arsenda builds this 18,000 BTU heat pump around R32 refrigerant, with cooling and heating in the same shell. Its stated fit is the standard 14.25 by 14.25 inch roof opening, so the old unit lifts out and the new one drops into the same hole.

It matches the Juliba on price, and the difference between them is the refrigerant and the stated install detail rather than the capacity. Operation is rated in outdoor temperatures from 23 to 115 degrees Fahrenheit, so it covers shoulder-season trips as well as summer.

It is a good fit for a travel trailer owner who wants the simplest like-for-like swap without cutting the roof.

Here is a second listing for the Arsenda 18,000 BTU heat pump, carrying the same cooling and heating spec, the same R32 refrigerant and the same stated fit for a 14.25 inch square roof opening. It exists as a sibling to the first Arsenda entry.

Because the specs match, the practical benefit is availability and delivery choice. Either listing delivers a non-ducted rooftop unit rated from 23 to 115 degrees Fahrenheit, built from UV-resistant materials for the road.

Pick whichever one ships sooner, then plan for 115 volt AC and 12 volt DC connections. The two Arsenda entries are the same unit class, so choosing between them is a stock decision, not a performance one.

This vented shroud is a direct replacement for the cover on a Dometic Penguin II, and the listing covers 11,000 to 15,000 BTU air conditioners and heat pumps, including model numbers such as 641816C and 651816C. If your unit cools well, the shroud is the whole repair.

The low-profile aerodynamic shape reduces wind drag and helps with fuel economy, and the UV-treated plastic resists sun damage and temperature swings.

It suits the owner who wants a fresh look and a weather-tight cover without paying for new refrigeration parts.

The .003 shroud is the sibling to the .001 and carries the same stated compatibility with Dometic Penguin II air conditioners and heat pumps in the 11,000 to 15,000 BTU range. The part number is the clue to which cover your unit expects.

It is built the same way: UV-treated plastic, a low-profile aerodynamic shape and a vented design that lets the condenser breathe. Like the other shroud, it sits near the entry of this shortlist on price and spares you the cost of a whole replacement.

It is the right pick for an owner whose cooling still works and whose cover has cracked from sun or a low branch.

Entry pick of the whole guide, a 6733-3221 fan blade for Coleman Mach units. It is 11 inches across with a half inch shaft hole and six blades set at a 40 degree incline, matched to models including 48203, 48204 and 48253.

The incline moves air across the condenser coil and the listing notes lower operating noise. It ships with shaft clamps and screws, so the kit is complete, and the corrosion-resistant material keeps its shape over many seasons on a hot roof.

Cut the power, take the cover off, change the blade and the unit is back to normal. It is the best first step before spending on anything bigger.