3/4ft PEX Tubing 300ft Blue PEX-B Coil - Flexible Radiant Heat PEX

Our review of the 3/4' PEX Tubing 300ft Blue PEX-B coil finds it best suited to contractors and homeowners installing radiant floor heating or potable water loops who value flexibility and long continuous runs. The single biggest reason to buy is the combination of a full 300 ft coil and robust PEX material that resists cracking and leaks while keeping hot and cold water flowing steadily. Installation is straightforward with common crimp, cinch, press, or compression systems, so the product works well for projects where speed and compatibility matter.

Key Features

• Non-Barrier Construction: Keeps water moving with a reliable non-barrier design that is suitable for potable water and radiant floor systems.
• 300 ft Coil: A long continuous run reduces joints and fittings, minimizing leak points and speeding installation on large loops.
• High Temperature Range: Rated for water temperatures from -45 to 110C, it handles typical heating and cooling loads without deforming.
• Flexible Bending Radius: A minimum 7' bending radius makes routing around joists and through slabs easier without kinking.
• Pressure Resistance: Pressure ratings of roughly 188-217 psi at 20C and 101-108 psi at 95C give confidence under varied operating conditions.
• Wide Connection Compatibility: Works with crimp, cinch, press and compression PEX fittings so it fits existing tooling and methods.

Who It's For

The tubing is ideal for electricians, plumbers, and DIYers installing open loop radiant floor heating, snow and ice melt systems, or potable water runs where long continuous coils reduce fitting count. Its flexibility and compatibility make it a practical choice on retrofit projects and new builds where routing through joists or under slabs is required.

Those who should look elsewhere include installers needing oxygen barrier tubing for closed-loop hydronic systems or applications that require an engineered oxygen diffusion barrier; this product is non-barrier PEX and intended for open loop and potable uses described above.

Pros & Cons

Pros

• Long 300 ft coil reduces joints and speeds installation on large loops.
• Robust temperature and pressure ratings provide reliable performance for hot and cold systems.
• Good flexibility with a small bending radius makes routing and staple-up installation easier.
• Compatible with a variety of common connection systems for effortless installation.

Cons

• Non-barrier design means it is not intended for closed-loop systems that require oxygen diffusion protection.
• Blue color identifies the tubing for cold lines but may require labeling if used for mixed applications.

Specifications

Type	Non-Barrier PEX-B
Color	Blue
Nominal Diameter	3/4' (nominal)
Total Length	300 ft
Temperature Range	-45 to 110C (-47F to 230F)
Pressure Rating	188-217 psi at 20C; 101-108 psi at 95C
Minimum Bending Radius	7 in

Our Verdict

This 3/4' PEX-B 300 ft coil is a practical, cost-conscious choice for installers and homeowners needing long, flexible tubing for radiant floors or potable water runs. It delivers good temperature and pressure resilience, easy compatibility with common fittings, and value for money, though those needing oxygen barrier tubing for closed-loop systems should choose a different product.

Frequently Asked Questions

Is this tubing suitable for potable water?
Yes, the non-barrier PEX material is described as suitable for potable water and radiant floor water use.

What connection methods are compatible?
The tubing is compatible with crimp, cinch (clamp), press systems and compression PEX fittings.

Can it be used in closed-loop hydronic systems?
Because it is non-barrier tubing, it is intended for open loop and potable uses; systems requiring an oxygen diffusion barrier should use barrier-rated PEX.