A rooftop air conditioner sits a few feet above your bed, bolted to a thin roof that carries every vibration into the cabin. So the quietest RV air conditioner is worth finding. The trouble is that most of the big names publish no noise figure for their US models, and the ones that do each measure something different.
We read the US product pages and spec sheets for rooftop units from ten brands. RecPro, TOSOT and Truma give figures by fan speed. TURBRO, Nomadic Cooling and VEVOR give one number each, and Furrion gives one outdoor number. Dometic, Coleman-Mach and GE give no absolute figure on the pages we read. Here is what each maker says, which numbers can be compared, and which unit to buy.
Our picks are listed above, with full specifications for each.
Why the numbers do not line up
An RV air conditioner has two noisy halves. The compressor and condenser fan sit on the roof. The blower pushes cold air through the ceiling unit into the cabin. A figure taken inside tells you what you will hear in bed. A figure taken outside tells you what the campsite next door will hear. Makers rarely say which one they mean.
Here is how the published figures sort out:
Indoor, at two fan speeds. RecPro labels every figure on its rooftop pages as indoor high speed and indoor low speed, and adds one outdoor figure. Its 13.5K low profile reads "Indoor High speed: 56 decibels Indoor Low speed: 47 decibels Outdoor: 67 decibels". RecPro writes plain dB or decibels, never dB(A).
Every fan speed, position not stated. TOSOT lists "Noise Levell (H/M/L): 56/52/43 decibels" for its 16,000 BTU unit, in plain dB. Truma lists "Low 62 dBA Medium 66 dBA High 74 dBA" for the Aventa eco. Neither says whether the microphone was inside or out.
One number. TURBRO gives a minimum, "45 dB Min.Noise Level". Nomadic Cooling gives a ceiling, "≤ 60 dBa". VEVOR says "just 65dB". None names a fan speed.
Outdoor only. Furrion's spec sheets list "Outdoor Sound Pressure Level 80dB" for every Chill HE unit we checked, from 10,000 to 15,000 BTU.
We compare figures only within one group. A-weighted dBA and plain dB are kept apart, because a maker that does not write the A has not told you how the sound was weighted. Indoor and outdoor are kept apart, and so are a minimum, a ceiling and a table. That is why the pick list does not simply run from the lowest number up. Furrion and TOSOT both call their figures sound pressure, which depends on where the microphone sits; for how that differs from sound power, see our explainer on sound power and sound pressure.
RecPro is the only maker here that labels its figures as indoor, so its range is the one real ranking in this guide. On high fan, from lowest:
- 48V 13.5K: 52 dB (its 48V 9.5K also lists 52)
- 9.5K low profile, 115V: 54.7 dB
- 13.5K low profile, 115V: 56 dB
- 15K low profile: 59.1 dB
- 13.5K standard (RP-AC3501): 59.7 dB
On low fan, the 13.5K low profile and the 48V 13.5K both list 47, the lowest indoor low-speed figure for a 13,500 BTU unit here. The gap between the 3400 and the 3501, both 13,500 BTU, is 3.7 dB on high and 8.4 on low. As a rough guide, 10 dB sounds about twice as loud, so an 8 dB gap at night is one you would notice. Our decibel chart sets a humming fridge at 40 dB and normal conversation at 60 to 70 dBA, from NIDCD figures, so RecPro's indoor range of 47 to 59.7 sits between the two.
RecPro's pages also show a comparison table that puts its units against unnamed "Competitor A" and "Competitor B" at 67 to 70.4 dB indoors on high. We cannot check those, because RecPro does not name the rivals, and none of the big makers publishes a figure we could match against them.
One more detail. RecPro's comparison table heads its own column "Houghton", which suggests the units are built by Houghton. RecPro does not say so in words, and it sells them under its own name.
The big makers publish almost nothing
Dometic. The current US rooftop range is the FreshJet 5 Series. Its pages say the "upgraded motor and optimized blower system reduce noise by up to 9 dB" but name no baseline model and give no absolute figure. The page's attribute list has fields for noise, with no value shown.
Coleman-Mach (Airxcel). It sells a Quiet Series of Mach 3, Mach 10 and Mach 15 units and calls the Mach 15 "the quietest most powerful Air Conditioner". Its product pages list part numbers, sizes and profiles, but no noise figure.
GE. GE's RV rooftop pages and the owner's manual we read give no noise figure. Its GE Profile PLH13 page says a "High-performance motor with sound dampening rubber-grommets reduce noise and vibration throughout the coach", without a number.
Furrion. Furrion publishes spec sheets through its parent, Lippert. Every Chill HE sheet we read lists "Outdoor Sound Pressure Level 80dB". Its OEM low-profile 13.5K sheet lists "Outdoor Sound Pressure ≤61dBA", which is A-weighted and so is not comparable with the 80dB figure. The Chill Cube, which Furrion markets as its quiet variable-speed unit, has no figure on its spec sheet.
Truma. The Aventa eco is the only Truma unit with a US figure. The larger Aventa comfort and the under-bench Saphir, which Truma lists as OEM only, give none.
Rooftop, under-bench and 48V
RecPro, Truma and Nomadic Cooling design their rooftop units for a standard 14 by 14 inch roof opening, and TOSOT, TURBRO and VEVOR ask for 14.25 inches. Under-bench units put the compressor inside a storage compartment instead, but the one we found on a US page, Truma's Saphir, is sold to RV builders only, and it has no published figure.
Battery-powered units are the other option. RecPro's 48V 13.5K lists the lowest indoor high-speed figure in this guide, 52 dB, tied with RecPro's 48V 9.5K. Nomadic Cooling's X2 and X3 run on 12V, 24V or 48V. If you are building a battery system to run one of these, our guide to quiet power stations covers the portable end of that market.
Generators: the other half of the noise
Most RVers who run air conditioning away from shore power run a generator, and the generator is often the louder machine. RecPro says its 115V units need at least a 2,500-watt generator on a dedicated 30-amp service, and recommends 3,000 watts for the 13.5K and 15K. TOSOT says a 3kW generator can run its 16,000 BTU unit. TURBRO says its inverter unit needs no soft starter.
RecPro sells an installed soft start that it says cuts startup inrush current by 30 to 70 percent, which can let a smaller generator start the compressor. A smaller generator is usually a quieter one. Our quietest generators guide compares camping and RV generators on the makers' own figures. Three Honda generators list an RV air conditioner among their applications, the EU3000iS, the EU3200i and the EU7000iS, and our Honda generator decibels page gives each one's figure at quarter load and rated load.
What each quiet unit costs
Around $600 to $960 buys a unit with a single figure or a basic table: VEVOR's 15,000 BTU unit at $601.90, or RecPro's standard 13.5K at $959.95.
Around $1,160 to $1,400 buys the units we would pick for most campers: RecPro's 9.5K and 13.5K low profiles, TURBRO's inverter Greenland at $1,199, and TOSOT's 16K at $1,399.
Around $1,450 to $1,960 buys more capacity or DC power: RecPro's 15K at $1,674.95 and its 48V 13.5K at $1,954.95. Nomadic Cooling's X2 was listed at $1,899 for the standard 24V unit and up to $3,515 for other versions.
Dometic's FreshJet 5 13.5K was $1,346.99 and Furrion's Chill HE $1,299 to $1,449, both without a comparable figure. Truma shows no price and sells the Aventa through dealers.
Mistakes buyers make
Comparing a minimum with a table. TURBRO's 45 dB is a minimum. RecPro's 56 is a high-speed figure. They describe different things.
Reading an outdoor figure as indoor. Furrion's 80dB is outdoors. It tells you nothing about the cabin.
Trusting a relative claim. "Up to 9 dB" quieter than an unnamed model, and "32% quieter" than unnamed "Others", cannot be checked.
Oversizing. A 15K unit lists higher figures than the 13.5K in RecPro's own range, 59.1 against 56 on high.
Forgetting the fan setting. Every RecPro unit lists 3.3 to 9 dB less on low than on high. At night, low fan is the cheapest quiet upgrade there is.
If a house window unit is an option for a cabin or park model instead, see our quietest window air conditioners, where most makers publish every fan speed.
How we chose
We read the US product page for every unit, and the spec sheet or owner's manual where the maker publishes one. We recorded each noise figure in the maker's own words and units, with the fan speed and position it describes, or a note that none was given. We compared figures only within a group: indoor with indoor, one fan speed with the same fan speed, and dBA with dBA. Prices are from each maker's own US store on the day we checked; where the maker shows no price, we say so.
We did not measure any of these air conditioners. Every figure here is the maker's own, quoted as published, and no brand paid for a place in this guide.
