CTM CT-16 Marine Air Conditioner 16,000 BTU - 230V - 50/60HZ

50/60 HzDual FrequencyCooling or HeatingReverse CycleTitanium (Ti) CoilsAnti-Corrosive2-YearWarranty

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CTM CT-16 Marine Air Conditioner 16,000 BTU - 230V - 50/60HZ

16,000 BTUs of powerful, quiet, and efficient cooling. 230V. Titanium circulating coils, stainless steel bolts, and stainless steel structural pan with ABS tray ensure long-lasting, corrosion-proof performance in even the toughest of marine environments. 2 Year Warranty*. Patent Pending S/N 63/104189

The quiet, powerful, and efficient CTM is a great option for new installs but also works as the perfect drop-in replacement for all major marine A/C brands including Dometic, Webasto, Cruisair, Marine Air, and Mermaid Air. The CTM is fully compatible with all Dometic, Cruisair, Marine Air, and Micro Air controls/thermostats and cables, making replacement of those systems a breeze.

CT-16 16,000 BTUS - 230V

CTM has taken nearly a decade of experience as a top-selling marine A/C retailer in the US, and combining this with an understanding of the wants and needs of marine A/C customers — as well as where other major brands could be improved — CTM has created a self-contained marine air conditioner that raises the bar on quality and performance.

And while lightweight and with a small footprint, the CTM CT includes titanium circulating coils, stainless steel bolts, and a stainless steel structural pan with Plastic ABS tray in order to ensure long-lasting, corrosion-proof performance in even the toughest of marine environments.

All CTM Control Boards, Temperature Sensors, and cables are made in the United States under strict quality standards. Every CTM Unit comes with an industry-standard 2-year warranty*, knowledgeable and attentive customer service, and ships ground to you free of charge within the US.

As marine A/C retailers, as well as boaters ourselves, we know what boaters are looking for in a marine A/C system — and this is exactly what the CTM line delivers


CT Unit Dimensions CT16 - 230V
16,000 BTU
208-230 V
50-60 Hz
Refrigerant Type
Starting Amps
16 A
Current Consumption Cool / Heat 
5.6 A / 4.3 A
Locked Rotor Amps
34 A
Fuse Max. / Min.
20 A / 12 A
Rotable Blower 
Yes / (-270 degress)
Min. Supply Duct Size
6 / 152 (in/mm)
Seawater Inlet Connection 
5/8" / 16 (in/mm)
Suggested Water Flow
500 GPH
Net Weight 
59 lbs / 27 kg
Financing Available!
Estimated monthly payment with 36 month financing.
*Based on credit approval.
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Pay over time with monthly payments.
  • APR, loan limit and payment periods available will be based on credit score
  • APRs available range from 0% to 17.99%, payment periods from 6 to 36 months and the max loan limit is $10,000
  • Select from different payment periods (e.g. 6 months, 12 months, 18 months, etc.)
  • Running the pre-approval process in order to determine what payment terms are available will not affect your credit score (soft pull)
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Features of the CTM CT-16
CTM CT-16 230V Self Contained Unit

   Compact Design
Perfect drop-in replacement for all major marine A/C Brands. It's compact design makes it the perfect unit for small spaces.
Electrical-Box.jpg   Electrical Box
Rugged electrical box with fire retardant cover.
   Titanium Condenser Coil
The most corrosion-resistant material available for seawater cooling coils. 40% more resistant than copper, titanium coils guarantee top cooling performance and a rust-free environment. 
   Stainless Steel Frame Base
Corrosion-resistant stainless steel frame base will not rust or fall apart. Long-lasting and made to withstand the harsh marine environment. 
   ABS Insulated Pan
ABS is a versatile thermoplastic product that combines several compounds to offer a durable and corrosion-free material. This insulated pan is designed and made to last for years.
Very quiet yet powerful marine air conditioning unit, making it a great option for powerboats and sailboats. 
   Rotatable Blower (<270°)
 High-velocity blower that can be rotated to fit most customers' needs. Rotatable <270 degrees, making ducting installation easier. 
   Universal Board
Next generation control board is compatible with most controllers in the market, such as OEM Brands like Dometic, Cruisair, and Marine Air. Also supports the TSEP Temperature sensor. 
   Reverse Cycle Heating
Enjoy powerful cooling from your CT Unit with the option of heating if needed. Thanks to reverse cycle, you can switch to heating when temperatures get low.
   Digital Touch Control
The CT is compatible with the CTM Touch display - a 2.5" Color Display with the latest technology in the industry, including numerous programmable parameters, operational features, and much more.


CT Unit Dimensions CT-16 230V
A - Width
20 in / 508 mm
B - Drain Pan Width
10 in / 254 mm
C - Height
14 in / 356 mm
D - Depth
13.5 in / 343 mm
E - Min. Duct Diameter
6 in / 152 mm

Universal Control Board Layout

CTM Universal Control Board
Compatible with Most Thermostats

Smart Touch / Easy TouchElite II Passport I/OSMXir

More information on CTM

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CTM Marine Air Conditioners not only improve on the efficiency and performance of other top units on the market, but are more durable, longer-lasting A/C units, designed to withstand the harshest of marine environments. CTM units are also fully compatible with controls and thermostats from major marine A/C brands, and can be easily installed yourself, making them the perfect drop-in replacements for units from other brands.

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Boaters often wonder which brand makes the best marine air conditioners when looking to install a new unit. 

To be honest, most marine air conditioners from all the major brands are solid and will do the job, as long as they’ve been installed correctly. However, the keyword here is most. You want to improve your odds of being satisfied with your A/C purchase by researching which company’s units have the least number of complaints… and if there is a problem, how that company handles it.

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Notes if replacing a Dometic DTU16, DTG16 or ECD16 - 230V

The CTM CT-16 marine air conditioning unit works as a good replacement for the Dometic DTG16 - 230V (205162176), DTU16 - 230V (205162160), or ECD16 - 230V (207500017). There are some specs that should be taken into consideration when replacing one of the units previously mentioned. 

- Because the CT-16 230V unit comes with the Universal Control board, it will work with the controller you currently have. Supported controllers included: SMXir, Passport I/O, Smart Touch, Elite II. 

- Waterline connections should be the same as the unit you are replacing, the CT-unit has a standard 5/8" water connection.

- The CT-16 230V Unit has a 6 inch ducting ring whereas the Dometic comes with a 7 inch. It is a quick replacement as the ducting can be easily cinched down with a clamp.

- Dimensions wise this unit is very similar to the one you are replacing, so It shouldn't be a major issue. However, it is suggested you double-check in order to avoid any issues when installing.

Substitute the following Part Numbers

CTM Unit Part NumberDescriptionFits OEM Part number OEM Description
24201CCT-16 230V 50/60HZ 410A205162176DOMETIC DTG16 230V 50/60HZ 410A 7MR
205162160DOMETIC DTU16 230V 60HZ 410A
205162161DOMETIC DTU16 410A 7" MR 230V 60HZ
205161160DOMETIC DTU16 410A 220V 50HZ
205161161DOMETIC DTU16 410A 220V 50HZ 7MR
207500017DOMETIC ECD16KZ/1-HV 410A 220-240V 50/60HZ
205563755CRUISAIR STX16C-410A 230V 60HZ
205563753CRUISAIR STQ16C-410A 230V 60HZ 7"MR
205563700MARINE AIR VTD16KZ-410A 230V 60HZ
205563702MARINE AIR VTD16KZ-410A 230V 60HZ 7"MR

Quick Installation Video


*CTM warrants their Air Conditioning Systems against defects in material and workmanship for two (2) years effective at the time of installation or vessel registration date for original equipment installation (OEM). CTM warrants the compressors and compressor brackets against defects in material and workmanship for one (1) year effective at the time of installation or vessel registration date for original equipment installation (OEM). This warranty period may not exceed eighteen (18) months from the original date of sale by CTM. This warranty period may be superseded by written contractual agreements.

For more detailed information please download the Manual and refer to page 17.

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