The Dometic line of RV air conditioners often includes an optional heat function, typically via a heat strip or integrated heating option. This feature can extend comfortable use into cooler nights and shoulder seasons without relying on propane or engine heat. This article explains how optional heat works, which models offer it, installation considerations, energy use, and common maintenance tips for U.S. travelers and campers.
Overview Of Optional Heat In Dometic Systems
Many Dometic air conditioner units designed for recreational vehicles offer an optional heating element to supplement cooling. The optional heat is usually a electric heat strip installed inside the indoor air handler or integrated into the unit’s control system. It provides modest warmth and can help reduce humidity while maintaining a comfortable cabin temperature. The heating capacity is generally lower than dedicated RV furnaces, so it is best used for comfort during mild cool spells or as a supplementary heat source.
How Optional Heat Works
Opting into heat in a Dometic system typically involves an electric resistance heating element activated by the thermostat or a control panel. When the system detects a drop in temperature, the heater strip engages and warms the evaporator assembly, which then distributes warm air through the vents. Some models use a two-stage approach, offering a low and high heat setting to balance energy use and comfort. In practice, the heating mode can also dehumidify the air, improving perceived comfort in damp environments.
Models And Availability
Options vary by model and production year. Common lines include roof-mounted units similar to Dometic Penguin, Brisk Air, or A/C models with an optional heat strip. It is essential to verify the exact configuration with the model number before purchasing. Look for specifications such as electrical requirements (typically 120V AC), heating capacity in BTU, and whether a thermostat supports heat functions. Some portable or built-in components may rely on separate control modules. Always check the current product sheet or contact a dealer for definitive compatibility.
Installation Considerations
When a Dometic unit is shipped with an optional heat feature, installation often requires a dedicated electrical circuit and proper wiring to the control board. An installer should confirm that the RV’s electrical system and shore power can handle the additional load. In some cases, the heat strip is activated by a specific wiring harness or a control switch on the thermostat. If retrofitting an existing unit, ensure the evaporator coil and the airflow path are not obstructed, and that the unit’s housing remains sealed against outdoor elements. Improper installation can reduce efficiency or cause electrical issues.
Energy Use And Efficiency
Electric heating adds to the RV’s energy consumption. The heat strip typically operates at 120V and draws current proportional to the chosen heat level. For example, a low heat setting may draw less than a typical space heater, while high heat can consume a significant portion of available shore power. Users should plan energy use, especially when running on generator power or limited battery capacity. In cool, dry environments, the heat function can reduce dependence on propane furnaces, potentially lowering fuel costs during extended trips.
Usage Scenarios And Practical Tips
The optional heat function is most effective in mild to cool conditions (roughly 40–65°F outside) where supplemental warmth is desirable but a full furnace isn’t necessary. For extreme cold, relying on a dedicated RV furnace remains preferable for reliability and efficiency. To optimize comfort, use the heat function in conjunction with proper insulation, window covers, and air sealing to minimize heat loss. Consider setting the thermostat to maintain a steady, comfortable temperature rather than cycling heating on and off frequently.
Maintenance And Troubleshooting
Maintenance for the optional heat feature is similar to standard cooling units. Keep the intake and exhaust vents clear of debris, periodically clean the air filters, and inspect electrical connections for signs of wear or corrosion. If the heating function doesn’t engage, check the thermostat settings, ensure the circuit breaker is on, and confirm the control board is receiving power. If the unit runs but produces little warmth, verify that the outdoor conditions are not exceeding the unit’s design parameters, and confirm there are no airflow restrictions inside the RV. For persistent issues, contact an authorized Dometic service provider.
Tips For Selecting And Using With The Right Setup
- Check Compatibility: Always confirm that your specific Dometic model offers an optional heat option and what wiring or control requirements exist.
- Plan Electrical Capacity: Ensure the RV’s electrical system or campground power can handle the additional load without tripping breakers.
- Combine With Insulation: Improve efficiency by using window coverings, sealing gaps, and improving RV insulation to retain warmth when the heat function runs.
- Monitor Humidity: Use the dehumidification capability often paired with cooling to maintain comfortable conditions in humid environments.
Frequently Asked Questions
Does Dometic’s optional heat require a separate furnace? No. It provides electric heat via a heat strip or similar component, supplementing rather than replacing a dedicated furnace in most setups.
How many BTUs does the heat provide? Heating capacity varies by model and configuration; refer to the product sheet for exact BTU output and electrical requirements.
Is the heat function energy-efficient? It is generally more energy-intensive than cooling but can replace propane heating in mild conditions, potentially reducing fuel use during travel.
Can I install optional heat myself? Some kits are designed for professional installation or dealer installation. Check the warranty and instructions to determine if DIY is appropriate for your unit.
