Choosing the optimal location for your RV water filter is crucial for ensuring clean, safe drinking water while protecting your RV’s plumbing system. The position of your water filtration system affects filter performance, maintenance accessibility, and protection from environmental factors. Whether you’re considering an external inline filter, an under-sink system, or a whole-RV filtration setup, proper placement maximizes filtration efficiency while minimizing potential problems like freezing or contamination. This guide explores the various installation locations for RV water filters, helping you determine the best setup for your specific recreational vehicle and travel needs.
Before determining the ideal location, it’s important to understand the different types of RV water filters available. RV filtration systems typically fall into four main categories: inline filters, canister systems, under-sink filters, and whole-RV systems. Each type serves a specific purpose and fits best in certain locations within your water system.
Inline filters are simple, disposable units that connect directly to water hoses. Canister systems offer more robust filtration and typically have replaceable filter cartridges. Under-sink filters target specific faucets, while whole-RV systems provide comprehensive filtration for all water entering your vehicle.
The filtration capability varies by system, with basic carbon filters removing chlorine and improving taste, while more advanced systems can eliminate bacteria, sediment, and chemical contaminants through multi-stage processes.
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Common RV Water Filter Locations
External Connection Point
The most popular location is at the external connection point where campground water enters your RV. This position filters water before it enters your RV’s plumbing system, protecting all components from sediment and contaminants. Typically, an inline filter or canister system attaches directly to your water hose before connecting to the RV inlet.
This external placement creates a first line of defense, removing larger particles and chlorine before water reaches your internal plumbing. Many RVers use this as either their sole filtration point or as the first stage in a multi-filter setup.
Under The Sink
Under-sink installation provides point-of-use filtration for specific faucets, typically in the kitchen where drinking and cooking water is accessed. These systems are installed in the cabinet space beneath the sink and connect directly to the cold water line.
This location allows for more sophisticated filtration options like reverse osmosis systems that might be too bulky for external installation. Under-sink placement keeps filters protected from weather elements while providing easy access for maintenance.
Whole RV System
Whole-RV filtration systems are typically installed near the fresh water tank or water pump. These comprehensive systems filter all water entering the RV, regardless of whether you’re connected to city water or using your onboard tank.
Installation usually occurs in utility compartments or underneath the RV in protected areas. These systems often feature multiple filters in series, addressing different contaminants at each stage.
Multiple Filter Locations
Many experienced RVers implement a multi-stage approach with filters at various locations. A common configuration includes an external sediment filter, followed by an internal carbon filter, and finally point-of-use filters at drinking water outlets.
This comprehensive approach provides layered protection, with each filter targeting specific contaminants at strategic points in your water system.
Pros and Cons of Different Installation Locations
| Location | Pros | Cons |
|---|---|---|
| External/Inlet | – Protects entire RV plumbing – Easy to access and change – Catches contaminants before entering RV |
– Exposed to weather and theft – Freezing risk in cold climates – Limited to simpler filter types |
| Under Sink | – Protected from elements – Can use advanced filtration – Direct for drinking water |
– Only filters one outlet – Requires cabinet space – More complex installation |
| Whole RV System | – Comprehensive protection – Works with all water sources – Weather protected |
– Expensive – Complex installation – Can reduce water pressure |
| Multiple Locations | – Layered protection – Targeted filtration – Redundancy |
– Higher cost – More maintenance – More complex setup |
Installation Tips Based on Location
External Filter Installation
When installing at the external connection point, use quick-connect fittings for easy removal during travel. Consider a filter housing that includes a bypass valve, allowing you to disconnect the filter without disrupting water flow when necessary.
In cold weather regions, external filters should be disconnected and stored inside when temperatures approach freezing. Alternatively, insulated filter covers or heated compartments can protect against freezing damage.
Always install external filters after any pressure regulators in your water line. This ensures the filter doesn’t have to withstand excessive water pressure that could damage the housing or reduce effectiveness.
Under-Sink Installation
Under-sink installations require careful measurement of available space before purchasing a system. Many RV cabinets have limited room compared to residential homes. Consider compact systems designed specifically for RVs.
Install a dedicated faucet for filtered drinking water to maintain normal water pressure at the main faucet. This separate faucet also makes it clear which water source has undergone additional filtration.
Use water-tight compression fittings rather than push-connect types for under-sink installations, as they’re more reliable with the vibrations and movement inherent to RV travel.
Whole RV System Installation
Whole-RV systems should be installed in accessible yet protected locations with adequate clearance for filter changes. Common placement includes basement compartments, utility bays, or under-floor areas with access panels.
Install shut-off valves before and after the filter system to facilitate maintenance without draining your entire water system. Label all components clearly for future reference and maintenance.
Consider installing a pressure gauge before and after the filtration system to monitor for decreased flow, which often indicates filters need replacement.
Maintenance Considerations Based on Location
External filters require more frequent inspections due to their exposure to the elements. Check connections for leaks and housing for damage from UV exposure or impact. Many RVers replace external filters more frequently than indoor ones as a preventative measure.
Under-sink filters benefit from the protection of being inside but can be more difficult to access in compact RV cabinets. Consider how you’ll replace filters when selecting this location, ensuring sufficient space to remove housing and cartridges.
Whole-RV systems typically require less frequent maintenance but involve more components. Document your installation with photos and notes to simplify future service. Setting calendar reminders based on manufacturer recommendations ensures timely filter changes regardless of location.
Popular RV Water Filter Models and Recommended Locations
| Filter Model | Type | Best Location | Approximate Price |
|---|---|---|---|
| Camco TastePURE | Inline carbon | External connection | $15-25 |
| Clear2O RV Inline | Inline with sediment pre-filter | External connection | $30-40 |
| CLEARSOURCE Premium | Dual-canister system | External/compartment storage | $300-400 |
| Waterdrop Under Sink RV | Multi-stage compact | Under sink | $100-150 |
| APEC Water Systems ROES-50 | Reverse osmosis | Under sink | $200-250 |
| iSpring WGB21B | Whole system two-stage | At water pump/inlet compartment | $150-180 |
Factors That Should Influence Your Filter Location Decision
Your travel style and destinations significantly impact the ideal filter location. Full-timers who frequently change locations may prefer external filters for easy maintenance. Seasonal travelers in extreme climates need to consider freeze protection when choosing placement.
Available space varies greatly between RV models. Class B vans have limited installation options compared to fifth wheels. Measure potential locations carefully before purchasing any system.
Water quality concerns differ by region. If you primarily travel in areas with high sediment, prioritize external pre-filtration. For regions with chemical contamination concerns, multi-stage systems with appropriate placement become more important.
- Climate considerations: Freezing temperatures require protected locations
- Water usage patterns: Heavy users may benefit from larger capacity filters in accessible locations
- Installation skills: More complex installations might require professional help depending on location
- Budget limitations: External inline filters offer the most affordable starting point
Remember that the optimal solution often involves a combination of filtration points, with simple external filters providing initial protection and more specialized systems at point-of-use locations where drinking water is accessed.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.