When it comes to installing a new water heater or replacing an old one, there are many choices to consider. One question that often arises is whether or not you can connect PEX (cross-linked polyethylene) directly to an electric water heater.
In this article, we will discuss the compatibility of PEX with electric water heaters and provide some guidance on the topic.
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Understanding PEX – Can PEX be used for electrical?
PEX is a flexible plastic tubing that is commonly used in plumbing systems for water supply lines. It is known for its durability, resistance to temperature and pressure, and ease of installation.
PEX is suitable for both hot and cold water applications, making it a versatile option for homeowners.
Can you connect pex directly to electric water heater vent – Compatibility
PEX is compatible with both electric and gas water heaters. However, there are a few considerations to keep in mind when connecting PEX directly to an electric water heater.
#1: Temperature Limitations
PEX has a maximum temperature rating that varies depending on the specific type and brand. Generally, PEX can handle temperatures up to 200°F (93°C), which is more than sufficient for most residential water heating systems.
However, electric water heaters typically operate at lower temperatures (120-140°F or 49-60°C). Therefore, connecting PEX directly to an electric water heater should not pose any issues regarding temperature limitations.
#2: Required Fittings
When connecting PEX to an electric water heater, it is essential to use the appropriate fittings that are compatible with both the PEX tubing and the water heater connections.
Brass or copper fittings with the right size and compatible threading are commonly used for this purpose.
It is advisable to consult the manufacturer’s guidelines or seek professional advice to ensure the correct fittings are used for the specific water heater model.
#3: Pressure Considerations
PEX can withstand high pressure, making it suitable for use with any type of water heater.
Electric water heaters typically operate at a lower pressure compared to gas water heaters, so connecting PEX directly to an electric water heater should not pose any significant pressure-related concerns.
Installation Tips To Connect Pex to Electric Water Heater
Here are some installation tips to keep in mind when connecting PEX directly to an electric water heater:
#1: Ensure the PEX tubing is properly sized for the water heater’s connections.
#2: Use brass or copper fittings that are compatible with PEX tubing and the water heater connections.
#3: Make sure all connections are tight and leak-free.
#4: Follow the manufacturer’s guidelines for proper installation techniques.
If you are unsure about the installation process, it is advisable to hire a professional plumber to ensure a safe and reliable connection.
The Bottom Line
In conclusion, connecting PEX directly to an electric water heater is possible and commonly done. However, it is important to consider temperature limitations, use the correct fittings, and ensure proper installation techniques are followed. If you are unsure about any aspect of the installation process, it is always best to seek professional advice to ensure the safety and efficiency of your water heating system.
| Pros | Cons |
|---|---|
| – PEX is durable and resistant to temperature and pressure. | – Proper fittings and installation techniques are crucial for a safe and reliable connection. |
| – PEX is suitable for both hot and cold water applications. | – Consultation with professionals may be necessary for unfamiliar installations. |
| – PEX is easy to install and flexible, allowing for versatility in plumbing systems. | – Temperature limitations should be considered, although they are typically not an issue with electric water heaters. |
Ultimately, following the manufacturer’s guidelines and seeking professional advice when needed will ensure a successful and efficient connection between PEX and an electric water heater.
Wow. This is uninsightful if not dangerously misleading.
No, you generally can’t connect pex to a water heater without 18″ of copper or steel in between.
There’s one manufacturer I can think of that makes fittings which have been accepted for this purpose.
There may be others but try not to read between the lines.
In the case of a gas heater, loosely the pex must be kept at least six inches away from a hot exhaust stack.
Your suggestions all sound very reasonable and “should” work, but T&P valves are set to pop at 210F and/or 150PSI: so that’s the type of conditions your connections must survive before taking any safety factors and creep or other deterioration with heat and age into consideration.
True, water and copper are excellent conductors of heat, so the HW connection may take a beating by conduction if the T&P pops. Bending passive heat traps into the HW connector and cold too while you’re at it can help a bit in case of a runaway heater and saves energy.