MAXKOSKO in-pipe heating systems are built for long-term reliability and undergo strict factory testing. However, in a small number of cases, users may notice water leaking, most often around the connection point where the cable enters the pipe.
If you’re dealing with a leak or want to avoid one, this article will help. Below we explore six frequent causes of in-pipe heater leaks, what to do if a leak occurs, and practical tips to keep your system running securely.
6 Common Reasons for In-Pipe Heater Leaks
1. Rare Manufacturing Flaws
While it’s uncommon, manufacturing defects can occur. Every MAXKOSKO in-pipe heater is pressure and electrical tested before leaving the factory. We recommend inspecting the cable and fittings when you receive it, look for cracks, deformities, or damaged seals before proceeding with installation.
2. Damage During Shipping
Rough handling during transit can occasionally cause harm to the cable or its seals. Check the product packaging and components thoroughly upon arrival. If you spot any kinks, dents, or loose parts, do not install the unit, contact our support team for a replacement.
Email us: maxkosko@maxkosko.com
3. Improper Installation
Incorrect installation is the leading source of leaks. To avoid problems:
①Be careful not to scrape the cable jacket on sharp pipe threads.
②Avoid bending the cable excessively near the end seals.
③Always perform a 24-hour pressure test after installation to identify any leaks before relying on the system in freezing conditions.
4. Loose Connectors or Gaskets
If the union nut isn’t fully tightened or the rubber gasket is misaligned, a small drip can develop. The solution is often straightforward: shut off the water supply, reposition the gasket, and firmly retighten the fitting.
5. Excessively High Water Pressure
MAXKOSKO heating cables are rated for pressures up to 230 PSI, which exceeds typical household water pressure (40–80 PSI). However, if your home’s pressure is consistently too high, it can stress the seals over time. Consider installing a pressure reducing valve if needed, note that damage from overpressure is not covered under the product warranty.
6. Power Surges or Lightning
Though rare, severe electrical surges or a nearby lightning strike can harm the heating element’s shielding and create small holes in the insulation. This type of damage is also not warranty-covered. We recommend using a quality surge protector for added safety.
What to Do If a Leak Occurs
1. Shut off water and power: Immediately stop the water flow and disconnect power to the heater.
2. Contain the water: Use a bucket or towels to manage dripping and avoid water damage.
3. Document the situation: Take clear photos or a short video of the leak and note your product order number.
4. Contact MAXKOSKO support: Provide details and documentation for a prompt warranty review.
Helpful Tips to Prevent Leaks
Handle the cable gently during installation, do not overtighten or force it through tight pipe bends.
Verify that all gaskets are seated properly and fittings are secure after installation and again within 24 hours.
Check your home’s water pressure and maintain it below 80 PSI for optimal performance.
Connect the heater to a surge protector to guard against electrical spikes.
Always follow MAXKOSKO’s official installation and testing guidelines.
Final Thoughts
Most leaks from an in-pipe heating system can be prevented with careful installation, periodic inspections, and managing water pressure.
By understanding these six common causes, and knowing how to respond, you can trust your MAXKOSKO In-Pipe Heating Cable to deliver safe, uninterrupted freeze protection season after season.
