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CTM's 25,000 BTU marine air conditioner provides 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 number.: US 12,030,610 B2.
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 — 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, a high-velocity rotatable turbo blower (rotates less than 250 degrees), 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
CTM CT Unit vs Dometic DTG and Webasto FCF Platinum
Specifications:
Capacity
25,000 BTU
Voltage
208-230 V
Cycle
50-60 Hz
Refrigerant Type
R410A
Starting Amps
24 A
Current Consumption Cool / Heat
8.5 A / 9.6 A
Locked Rotor Amps
50 A
Fuse Max. / Min.
30 A / 18 A
Blower Airflow
558 CFM
Blower Speed
1420 RPM
High Velocity Blower
Yes
Min. Supply Duct Size
5.5 in Square / 7 inches duct
Seawater Inlet Connection
5/8" / 16 (in/mm)
Suggested Water Flow
550 GPH
Net Weight
87 lbs / 39.4 kg
Features of the CTM CT-25H
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.
Turbo Blower
High-velocity rotatable turbo blower that will cool or hear faster. Blower rotates less than 250 degrees.
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. Made in USA.
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.
Control and Cable Included
The CT units now come with the Elite II Control and 10ft 8-pin cable included. Since May 1 2026
Because the CTM unit comes with the Universal Control board, it should work with the controller you currently have. Supported controllers include the SMXir, Passport I/O, Smart Touch, and Elite II. However, there are some older versions of the SMXir and Passport i/o controllers that don't have the firmware to work with the new universal board. A newer version of the SMXir or the Passport i/o.
CTM Marine Air Conditioners - All New, Superior Marine Air Conditioning
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.
Best Marine Air Conditioners? Best Brand, Support & Warranty?
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.
The warranty period of registered CTM products is (3) three years, being the first year parts and labor, the second & third year parts only. For unregistered CTM products (1) one year, being the first 6 months parts and labor, and the last 6 months parts only. The warranty period of CTM products begins from the date of purchase (if purchased through a dealer or distributor), when installed (if installed by an authorized CTM dealer) and/or at the time of possession of the vessel by the owner (for OEM installations). However, the warranty period shall not exceed (3) three years from the original manufacture date. CTM products include a serial number which is date-coded, in order to determine the manufacturer date of the product, you may contact CTM’s customer service to obtain the original date.
In the event there is an extended period of time between the date a CTM product is manufactured and the moment that the product goes into service, CTM will require proof of purchase. For unregistered products, a proof of purchase will be required as well.
For more detailed information please download the Manual and refer to page 17.
Micro Air EasyTouch / Smart Touch display replacement. Dometic Smart Touch Replacement. Compatible with Dometic and Cruisair A/C Units. Intuitive icons and menus for easy use, leads you through start-up and troubleshooting. Schedule start-up & shut-down times or temperature changes. CAN Bus compatible. Accommodates Vimar Eikon, Eikon Evo bezels ( sold here ). This model is compatible with Dometic's Passport I/O Board and U-Board. 90-day warranty*. Questions? Contact us. (Wi-Fi Model Requires onboard router for dockside and open ocean use.)
Passport I/O Control Panel replacement by Micro Air, for Dometic and Marine Air Systems. Micro-Air 402-IO. It is newly designed and manufactured. Cures annoying problems like sticking or non-operational buttons. New LED segments and 6 fan speed. Drop-in replacement for the Marine Air Systems Control Panel (Passport I/O). Bezel Included. New control. Part Number: ASY-402-X03 Fits Dometic / Marine Air Part Number: 222000245 & PCB-520-00L
CTM Elite II Marine Thermostat - versatile thermostat designed to replace the original Marine Air Elite and Elite II models. It is compatible with all 8-pin cables, making it easy to install. It features f our different modes of operation, including auto, cool only, heat only, and dehumidify, providing you with plenty of flexibility to meet your heating and cooling needs. 90-day warranty*. 8-Pin Cable (Click Here to buy) , Bezel Sold Separately (Click here to buy) CTM Part Number: 40005A
Fits Dometic / Marine Air Elite 2 Display, Part Numbers: 222000234 / 222000244
8-Pin display cable. This display cable is 8-conductor, shielded cable with reversed RJ-45 modular plugs on each end. This cable is compatible with all Micro-Air cabin and chiller controls. Select 6 ft to 75 ft. Compatible with Dometic 8-Pin Controls.
Part Number: SUB-031
SMXir display / keypad. OEM control display for Cruisair ®, Dometic ® and Micro Air, SMXir keypad. Smart, condensed housing with easy surface-mount installation. The large, easy-to-read LED displays cabin temperature, set point, programming prompts, and fault code warnings, and small LEDs and backlit text indicate system status. Compatible with legacy A-281, A-282 (SMX Online), and A-288 (SMXII) power/logic boards. Questions? Contact us. New control. Part Number: SMX IR / 502-09
This display cable is 6-conductor, shielded cable with reversed RJ-12 modular plugs on each end. It is compatible with Boards A-281, A-288, U-Boards, MAQ, equivalent OEM control boards, EasyTouch 6-pin, and equivalent OEM control display. This cable replaces the Dometic CXP Cable.
Part Number: SUB - CXP
NEW Temperature Sensor TSEP, RJ11, From 5 to 80 feet . 90-day warranty*. Probe temperature Sensor for Marine Air Conditioning systems. Compatible with Dometic, Marine Air, Cruise Air, Webasto, and any other Self-Contain or Split Gas unit that uses RJ11 connector (Phone Jack connector). Perfect Dometic Temperature Sensor replacement. Does not work with chiller units. 6-Pin Cable. Reference: TSEP
SMX II AB NEW OEM Keypad Display - ASY-423-X00 . Brand New. Fits Cruisair / Dometic SMX II AB keypad display. Completely new designed and manufactured board. Fully compatible with original Cruisair/Dometic power (logic) boards. For Self-Contained and Split Gas Units . For the chiller system SMX II keypad, see here . Questions? Contact us.
A/C Deluxe Installation Kit (Pump, Plastic Grills, Duct and Hardware) for Dometic and Webasto form 24,000 BTU to 27,000 BTU Self Contained Marine A/C Units. Part Number: 218000110-2D-230 4-6 WEEKS LEAD TIME FOR TEAK GRILLS
The Micro Air Easy Start 364 is the most advanced and effective soft starter for all A/C applications. It employs a 4-part start ramp sequence that is self-optimizing, resulting in the lowest possible start-up current. EasyStart can deliver 65-75% start current reduction as compared to a compressor's LRA (locked-rotor amperage). It also has numerous specialized fault checks not found in any other soft starter to provide further protection for your compressor. Fits Dometic, Marine Air, Cruisair, and most marine A/C Brands. Part Number: ASY-364 Important: X36 model will only work with units up to 18,000 BTUs when connected to 230V
CTM PM1000AH - 230V ODP (Open Drip Proof Motor Enclosure Model) is a sealless centrifugal magnetic drive marine air conditioning pump. Series generates a maximum flow of 17.2 gallons per minute with a maximum head of 27 feet at 11.7 PSI. The PM1000-230V is also ISO 8846 Marine Ignition Protected. 1000 gallons/hr.
Part Number: PM1000AH
The MARCH PUMP LC-3CP-MD 230V 50/60 HZ is a centrifugal magnetic drive pump, eliminating the need for a shaft seal. Pumps are serviceable with a screwdriver. The “LC” is hermetically encapsulated and liquid-cooled which allows the pump to be run fully submerged or in the open air for complete moisture protection. March Pumps Part Number: LC-3CP-MD 230V Replaces Dometic Part Number: 225500016 - PML500 230V
Double lamination of tough polyester, which encapsulates a steel wire helix, forms air-tight inner core. Seamless black polyethylene vapor barrier surrounds thick blanket of fiberglass insulation. R value 4.2 and meets or exceeds UL-181, NFPA 90A and 90B standards. Resistant to ozone, UV, and corrosion. For Class 1 Heating and AC Duct applications. Operating temperature -20°F to 250°F (-29°C -121°C). Please Select from 4" to 9" Internal Diameter
MPI 163 Series Marine AC Water Hose Extra Heavy duty construction with white PVC cover and black PVC inner tube. ID: 5/8" - OD: .895" - 450 psi - 50 ft. This marine Air conditioning water hose works with all A/C Units that have a 5/8" Seawater Inlet Connection. 90-day warranty*.
Part Number: 163-0586 / 1022510G-50
CTM SMX II Wall Cover Plate for SMXir, Elite II, Qht, Passport & Easy Touch controllers. The plate is reversible, so both can be used, dark grey or black. Dimensions of the Wall Cover: 4.8 x 8.5 x 0.09 inch - 124mm x 217mm x 2.5mm (WxHxD)
CTM Blower assembly for Marine Self-Contained air conditioning units. Works with units from 24,000 to 25,000 BTU's - 230V. It is fully compatible with CTM, Dometic, Cruisair, and Marine Air (CT, DTU, STX, STQ, SXR, VTD, VCP, VRP) units. 90-day warranty.
OUT OF STCOK, ETA MID JUNE
Part Number: 40025B
Model part number : AM074A2-AGT-00
CTM Air Conditioner Filter for 24,000 - 25,000 BTUs unit. This filter might be compatible with other brands' self-contained units if the dimensions fit. Direct replacement for air filter on the CTM CT-25H Unit. Dimensions of filter: 14.5 x 14.6" (WxH) Part Number: 40014F
Protect your investment, avoid unexpected repair costs, and enjoy complete peace of mind with the CTM Extended Warranty.
Add 1 extra year of full parts on top of the standard warranty.
Must be purchased within 30 days of your unit purchase.
Only Valid for CTM Self Contained Units.
The Micro-Air ASY-398-X1S-BL EasyStart Flex Home and Marine AC Soft Starter is an advanced soft starter for residential AC units from 1 to 6 tons ( 12,000 to 72,000 BTUs ), featuring patent-pending adaptive learning technology that is unmatched by other soft starters. It offers up to a 75% reduction in start-up current and a 50% reduction in overall enclosure size , allowing for installation in tight spaces. 115/230V .
In Stock: 2
Regular Price: $389.00
CPlus Price: Login for Pricing
In Stock: 2
Regular Price: $389.00
CPlus Price: Login for Pricing
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