CTM CT-6H Marine Air Conditioner 6,000 BTU - 230V - 50/60HZ
50/60 HzDual Frequency | Cooling or HeatingReverse Cycle | Titanium (Ti) CoilsAnti-Corrosive | 2-YearWarranty |
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CTM CT-6H Marine Air Conditioner 6,000 BTU - 230V - 50/60HZ - Turbo Blower
6,000 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.
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 ā as well as where other major brands could be improved ā 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, a high-velocity turbo blower, 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 ā and this is exactly what the CTM line delivers
Specifications:
- Capacity
- 6,000 BTU
- Voltage
- 208-230 V
- Cycle
- 50-60 Hz
- Refrigerant Type
- R410A
- Current Consumption Cool / Heat
- 4.5 A / 5.6 A
- Starting Amps
- 12 A
- Locked Rotor Amps
- 35 A
- Fuse Max. / Min.
- 15 A / 10 A
- Blower Airflow
- 282 CFM
- Blower Speed
- 2000 RPM
- Rotable Blower
- Yes / (-270 degress)
- Min. Supply Duct Size
- 4 / 102 (in/mm)
- Seawater Inlet Connection
- 5/8" / 16 (in/mm)
- Suggested Water Flow
- 250 GPH
- Net Weight
- 41 lbs / 19 kg

- Estimated monthly payment with 24 month financing.
*Based on credit approval.
More info

- 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 24 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)
Features of the CTM CT-6

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
- 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.
Quiet
- Very quiet yet powerful marine air conditioning unit, making it a great option for powerboats and sailboats.
Rotatable Turbo Blower (<270°)
- High-velocity turbo 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.
Dimensions:

- A - Width
- 15.28 in / 388 mm
- B - Drain Pan Width
- 8 in / 254 mm
- C - Height
- 12 in / 305 mm
- D - Depth
- 9.50 in / 240 mm
- E - Min. Duct Diameter
4 in / 102 mm
Universal Control Board Layout

Compatible with Most Thermostats
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Smart Touch / Easy Touch | Elite II | Passport I/O | SMXir |
More information on CTM
Notes if replacing a Dometic DTU6, DTG6 or ECD6 - 230V
The CTM CT-6H 230V marine air conditioning unit works as a good replacement for the Dometic DTG6 - 230V (205162069), DTU6 - 230V (205162060), or ECD6 - 230V (207500307). There are some specs that should be taken into consideration when replacing one of the units previously mentioned.
- Because the CT-6H 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-6H Unit has a 4-inch ducting ring whereas the Dometic comes with a 5 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.
Also Substitutes the following Part Numbers
CTM Unit Part Number | Description | Fits OEM Part number | OEM Description |
21201C | CT-6H 230V 50/60HZ 410A | 205162069 | DOMETIC DTG6 230V 50/60HZ 410A |
205161060 | DOMETIC DTU6 230V 60HZ 410A | ||
205563250 | CRUISAIR STQ6-410A 230V 60HZ | ||
205563255 | CRUISAIR STX6-410A 230V 60HZ ONLY | ||
205563200 | MARINE AIR VTD6K-410A 230V 60HZ ONLY |
CTM CT Unit vs Dometic DTG and Webasto FCF Platinum
Installation Video
Warranty
*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 twenty-four (24) 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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