Best Marine Water Heater Bypass Kit Options for RV Winterization
When preparing an RV for cold weather, bypassing the water heater with a reliable kit can save antifreeze costs and simplify winterization. The following selections highlight kits that are compatible with common RV water heater configurations, emphasize durable fittings, and offer straightforward installation. Below you’ll find five top choices, each with essential features to help you decide which bypass kit best fits your rig.
Choosing at a glance
| Product | Brand | Key Benefit | Fits |
|---|---|---|---|
| Fundyliue P23505LFVP | Fundyliue | Universal fit with brass valves and intuitive handle | Various RV water heaters |
| Camco Camper/RV Kit 35953 | Camco | Permanent bypass, 2 brass valves, 8″ hose | 6-gallon water heaters |
| RecPro RV Water Heater Bypass | RecPro | USA-made, PPSU valves, NSF/UPC certified | RV hot water systems |
| RVGUARD By-Pass Kit | RVGUARD | Durable brass valves, dual female connectors | 12″ reinforced hose setups |
| Camco 35963 Quick Turn By-Pass | Camco | One-turn bypass, kink-resistant hose | 10-gallon tanks |
Fundyliue RV P23505LFVP 12″ By-Pass Kit
The Fundyliue P23505LFVP by-pass kit uses reinforced 12″ hoses and three male 1/2″ NPT tees with brass valves, including double female connectors for flexible installation. Its intuitive handle and triangular markings aid operation, helping users switch to bypass mode quickly. The design supports universal fitment and aims to reduce antifreeze usage by bypassing the water heater.
Camco Camper/RV Water Heater By-Pass Kit 35953
Camco’s kit is designed to bypass a camper water heater during winterizing, featuring an 8-inch nylon-reinforced hose and two brass valves. It is compatible with 6-gallon tanks and 1/2″–14 NPT tapered threads, with durable brass fittings for reliable, long-term use. The bypass can be installed permanently to streamline annual winterization sessions and reduce antifreeze needs each season.
RecPro RV Water Heater Bypass Kit
RecPro’s bypass kit includes PEX tubing, crimp rings, and compatible fittings, offering a straightforward installation path. The PPSU valves provide enhanced resistance to heat, aggressive water, and chemicals, potentially extending the system’s life. Made in the USA and NSF-61-9 certified, it’s designed for dependable winterizing with a simple hand-tightened connection and a ¼ turn to seal.
RVGUARD 12″ Reinforced Hose Bypass Kit
RVGUARD’s kit emphasizes antifreeze savings by bypassing the water heater, with durable brass valves built to resist heat and chemicals for longer service life. The included 3 male 1/2″ NPT valve and dual female fittings provide flexible connection options to suit different plumbing setups and preferences.
Camco RV Water Heater By-Pass Kit 35963
Camco’s 35963 kit features 12-inch nylon-reinforced hose and durable brass valves designed for winterization in RVs with 10-gallon water heaters. The kit supports antifreeze savings and is built to be installed permanently to speed up winterizing sessions, minimizing disconnections and effort during routine maintenance.
FLEXMAN RV Water Heater Bypass Kit
The FLEXMAN bypass kit includes 12-inch reinforced hoses and two 1/2″ NPT brass tees with double female connectors. It emphasizes versatile connections and sealing tape for a comprehensive winter solution, aiming to reduce antifreeze usage while maintaining reliable performance across different RV plumbing configurations.
CHICIRIS RV Water Heater Bypass Kit
CHICIRIS offers a cost-effective winter maintenance solution with three male 1/2″ NPT valves and double female connectors for flexible connections. The kit includes sealing tape and fittings to cover a full winterization setup, reducing antifreeze needs while protecting plumbing against freezing temperatures.
Buying Guide
- <strongCompatibility: Verify tank size and threads (1/2″ NPT is common) to ensure a proper fit with your RV water heater model.
- <strongValve Material: Brass valves resist heat and chemical exposure better than plastic, improving longevity in winter conditions.
- <strongHose Construction: Look for reinforced hoses to prevent kinking and ensure durability during storage and setup.
- <strongConnection Options: Kits offering both male and female connectors provide flexibility for various plumbing configurations.
- <strongPermanent vs. Temporary: Permanent bypass designs speed up winterization for repeated seasonal use, while portable kits may suit occasional travelers.
- <strongCertifications: NSF/UPC certifications reflect quality and safety standards for components used in potable water systems.
- <strongEase of Use: Intuitive handles and clear markings help avoid mistakes during seasonal switching between bypass and heater modes.
- <strongCost Considerations: While upfront cost varies, choosing durable brass components can reduce maintenance costs over time.
- <strongInstallation Time: Some kits are plug-and-play, while others require mounting or more extensive plumbing work—plan according to your DIY comfort level.
- <strongMaintenance: Periodically inspect valves and hoses for signs of wear, leaks, or corrosion to maintain reliability year after year.