Dometic RV air conditioners are designed to provide reliable cooling in recreational vehicles, offering comfort and improved air quality during travel. Proper installation is crucial for optimal performance and longevity. This article details the process of installing a Dometic RV air conditioner, covering preparation, mounting, and essential safety considerations, based on available documentation. The units are known for their durability, reliability, and energy-efficient performance, and are engineered to handle the challenges of RV living.
Preparing for Installation
Before commencing the installation, thorough preparation is essential. This includes gathering the necessary tools, verifying the RV’s power supply, and assessing the mounting location. Careful preparation minimizes potential issues and ensures efficient operation of the air conditioning unit.
Gathering Tools and Equipment
A comprehensive toolkit is required for a successful installation. Essential tools include:
- Power Drill: Used for creating mounting holes.
- Screwdrivers (Phillips and flathead): For tightening screws and bolts.
- Wrenches: For securing nuts and bolts.
- Measuring Tape: To ensure accurate placement and measurements.
- Sealant or Caulk: To prevent leaks and provide insulation.
- Electrical Wire Strippers: For wiring the unit to the RV’s electrical system.
- Safety Glasses and Gloves: To protect eyes and hands.
Ensuring Proper Power Supply
The RV’s electrical system must be capable of supporting the air conditioner’s power demands. Key considerations include:
- Circuit Breaker: Verify compatibility with the air conditioner’s requirements, ideally using a dedicated breaker.
- Amp Rating: Most Dometic RV air conditioners require 15-20 amps; confirm the RV’s power supply meets this specification.
- Generator Compatibility: If using a generator, ensure it provides a minimum of 2,000 watts to support the air conditioner and other appliances.
- Electrical System Verification: If uncertain, consulting an electrician is recommended to ensure the RV’s electrical system is up to code.
Assessing the Mounting Location
The mounting location on the RV roof must be suitable for supporting the air conditioner and ensuring proper operation. This involves:
- Checking the Roof: Ensure the roof is flat and free of obstructions.
- Cleaning the Area: Remove debris, dust, and old seals from the mounting location.
- Ventilation Check: Confirm a clear, unobstructed path for intake and exhaust venting.
- Ceiling Obstructions: Verify the ceiling inside the RV is free from obstructions that could interfere with the installation.
Mounting the Dometic Air Conditioner
Once the preparation is complete, the air conditioner can be mounted to the RV roof. This process requires careful attention to detail and adherence to the manufacturer’s guidelines.
Installing Mounting Brackets
Mounting brackets provide a secure base for the air conditioner. The installation process includes:
- Positioning Brackets: Place the brackets according to the manufacturer’s guidelines.
- Marking Screw Holes: Mark the locations for screw holes using a pencil or marker.
- Securing Brackets: Attach the brackets to the roof using appropriate screws or bolts.
Securing the Air Conditioner Unit
With the mounting brackets in place, the air conditioner unit can be secured. This involves:
- Lifting the Unit: Carefully lift the air conditioner onto the roof, ideally with assistance.
- Aligning with Brackets: Position the unit over the mounting brackets, ensuring proper alignment with the mounting holes and vents.
- Attaching the Unit: Secure the air conditioner to the brackets using screws or bolts, tightening each securely.
- Vibration Check: Verify the unit is firmly secured to prevent movement during travel.
Safety Considerations
Installing an RV air conditioner involves potential hazards, necessitating strict adherence to safety precautions.
Working at Height
Working on the RV roof requires caution to prevent falls. Appropriate safety measures should be taken, such as using a secure ladder and wearing appropriate footwear.
Handling Heavy Equipment
The air conditioner unit is heavy and requires careful lifting and maneuvering to avoid injury. Assistance from another person is recommended.
Dealing with Electricity
Electrical work carries the risk of shock. Disconnect the power supply before working with electrical wiring and follow all safety guidelines. If unsure, consult a qualified electrician.
Troubleshooting and Additional Tips
Addressing potential issues and incorporating helpful tips can streamline the installation process.
Troubleshooting Common Issues
Potential issues during installation include wiring complications and power supply mismatches. Troubleshooting may require additional time and expertise.
Pro Tips for Installation
- Clean Mounting Area: Thoroughly clean the mounting area to prevent leaks.
- Power Supply Verification: Double-check the RV’s power supply to ensure compatibility.
- Ventilation: Ensure proper ventilation for efficient operation.
DIY vs. Professional Installation
RV owners have the option of installing a Dometic air conditioner themselves or hiring a professional.
DIY Installation
If comfortable with electrical work and basic RV maintenance, a DIY installation can save money. However, it requires following the manufacturer’s guidelines carefully.
Professional Help
If unsure about electrical skills or if the RV requires a custom installation, hiring a professional is recommended. An expert will ensure proper wiring and secure mounting. Prioritizing safety is paramount when dealing with electrical systems.
Dometic Air Conditioner Models and BTU Ratings
Dometic offers various air conditioner models to suit different RV sizes and cooling needs.
BTU Ratings
- 13,500 BTU: Suitable for most standard RVs.
- 15,000 BTU: Recommended for larger RVs (over 32 feet) or hot climates.
Conclusion
Installing a Dometic RV air conditioner requires careful preparation, attention to detail, and adherence to safety precautions. By following the steps outlined in this guide, RV owners can ensure a successful installation and enjoy comfortable cooling during their travels. Proper power supply verification, secure mounting, and attention to ventilation are crucial for optimal performance and longevity. Whether opting for a DIY installation or professional assistance, prioritizing safety is paramount.

