Common Hot Tub Problems: A Complete Guide to Issues You Might Face and How to Fix Them

If you're considering purchasing a hot tub or already own one, you’re probably aware that it’s much like owning a car or appliance. With moving and working parts, there’s always the possibility of things breaking down and requiring repairs.

One common question we hear at Hydropool is, "What are the typical problems with hot tubs?" Hot tubs are a significant investment, so it’s important for owners to understand the components, potential issues, and how to fix them.

In this article, we'll cover:

• The hot tub parts that commonly experience problems
• The main areas where issues arise
• Our best tips for minimizing hot tub issues

At Hydropool, we hope your hot tub remains trouble-free. Every Hydropool hot tub is filled with water and thoroughly tested before being shipped for delivery. However, like any machine, hot tubs can require servicing over time. We’ve been in business for over 40 years and have a wealth of experience in identifying and preventing common issues. This article aims to help you diagnose and address any problems you might encounter or simply help you understand what to expect if you're considering buying a hot tub.

Common Hot Tub Parts That Can Experience Issues

1. Pumps
   Hot tubs typically have one or two pumps. A one-pump system uses a single pump for both jets and circulation, while a two-pump system separates the tasks, with one smaller pump handling circulation and the other powering the jets. Two-pump systems are generally more efficient since the pumps are under less strain. The most common issue with pumps is leaking, as the seals can wear out over time.
2. Heater
   The heater is responsible for warming the water by forcing it through an element. If the water isn’t clean or properly balanced, debris and particles can pass through the heater, putting stress on the motor and causing long-term damage. Regular water maintenance can help avoid this issue.
3. Filters
   Filters are crucial for cleaning the water and removing particles. If filters are neglected, debris can clog the mechanical parts, leading to inefficiency and possible damage. Just like a furnace filter, hot tub filters need to be cleaned or replaced regularly to ensure proper function.
4. Water Quality
   Maintaining proper water balance is essential. If the pH of the water is too low (acidic), it can corrode the hot tub's parts. Conversely, if the pH is too high (alkaline), it can cause calcium buildup, which will coat and damage parts over time. Water can also turn green, become foamy, cloudy, or smell unpleasant, and improper water balance can lead to itchy skin. Regular monitoring and maintenance can prevent these issues.

5. Shell
   Acrylic hot tubs are prone to chipping, scratching, or dulling over time, especially if the water quality is poor. Stains from minerals or chemicals can develop, and if calcium buildup occurs, it can stain or etch the surface. Roto-molded hot tubs are more durable and have a matte finish but can still get scratched. Proper care can help maintain the shell’s appearance.

   

   Your hot tub is doing a lot more inside than it is on the outside! This is one of Hydropool’s Signature hot tubs.

6. Cabinet and Frame
   If your hot tub isn't placed on a solid, level surface, the cabinet may warp over time. Hot tub frames are typically made from steel, ABS plastic, or wood, and all materials can be effective when maintained properly. Ensuring your hot tub is on a stable foundation will help prevent frame issues.
7. Electrical System
   The electrical system powers the panel that controls your hot tub, as well as the pumps and heater. Common issues with the electrical system include motherboard failure or keypads displaying error codes. Regular inspection and maintenance of the electrical components can help detect problems early and prevent more severe damage.
8. Hoses
   Hoses are responsible for moving water to the jets. They are generally low-maintenance parts, but leaks can occur, which may lead to water loss or reduced performance. If you notice a decrease in water flow or wet spots near the hoses, it may be time to check for leaks.
9. Jets
   Jets are often replaced due to clogging or buildup, especially if the water is not properly balanced. If calcium or other minerals build up in the jets, they can lose their effectiveness. Regular water maintenance and filter cleaning will help reduce the need for jet replacements.

Does the Type of Insulation Impact Hot Tub Repair?

Yes, the type of insulation used in your hot tub can significantly affect repairs. Here's why:

• Full Foam Insulation: Full foam hot tubs are packed with insulation around every part. This means that, when repairs are needed, the insulation often has to be cut out, making the repair process messy and more time-consuming. Additionally, once the insulation is removed, it needs to be replaced after the repair is completed, adding to the overall cost of the repair.

• Thermal Blanket Insulation: At Hydropool, we've switched to using thermal blankets for insulation. This system is much more efficient when it comes to repairs because the blanket can simply be lifted out of the way, giving access to all the parts that need fixing. No insulation needs to be cut or replaced, making repairs quicker and more cost-effective, all while still maintaining excellent insulation and energy efficiency.

Top Problems Hot Tub Owners Face

1. Water Issues
   Water-related issues are by far the most common problem hot tub owners face. These can range from short-term issues like water discoloration to long-term damage like calcification of mechanical parts due to improper pH balance over time. Maintaining the right water balance is key to avoiding these problems. If water isn't regularly cleaned or maintained, it can lead to larger issues in other components, such as clogged filters and damaged heaters. Keeping water clean, balanced, and properly circulating is essential for your hot tub's longevity.

2. Heater Problems
   The two most common heater problems stem from poor water chemistry:

   • Acidic water: If the water is too acidic for too long, it can deteriorate the heater's rubber parts, leading to leaks and malfunctions.

   • High pH: When the pH is too high, minerals and calcium can build up on the heating element, reducing its efficiency. In addition, improper filter maintenance can restrict water flow to the heater, causing a “dry fire” (a low flow error). This is why regular filter cleaning or replacement is so important. In most cases, replacing the heater is more cost-effective than repairing it, with new heaters typically costing under $500.

3. Leaks
   Although we rigorously test every Hydropool hot tub for leaks before delivery, some leaks can develop over time. These are typically caused by a tube becoming loose or an issue that arose during shipping. Locating the source of a leak can be tricky, especially with full foam insulation (which Hydropool no longer uses). In cold climates, pipes can freeze if the hot tub is turned off in winter and circulation stops. Thankfully, these leaks are usually easy to fix once located.

4. Pump Failures
   Pumps are integral to the functioning of your hot tub, working hard to circulate the water and power the jets. Over time, they experience wear and tear, especially if the water is out of balance. Calcium buildup or acidic water can exacerbate pump issues, making them work harder than necessary. While pumps can sometimes be repaired, if they need to be replaced, it can cost up to $1,000 or more.

5. Tripping the Breaker
   While rare in Hydropool tubs, a tripped breaker often signals an issue with the heater or another electrical component. If this happens, it's important to address the root cause, which may require a full inspection of the tub's electrical system.

6. Error Codes
   Error codes typically arise when moisture gets into the control panel, leading to electrical problems. If this occurs, it’s necessary to replace any damaged parts and find out how the moisture entered to prevent future issues.

7. Cover Wear and Tear
   The hot tub cover serves a critical function by insulating the tub when not in use. However, it also takes the brunt of sun exposure and can degrade over time. Depending on your location and use, the cover may need to be replaced every 3-5 years to ensure your hot tub is well-insulated and energy-efficient.

8. Chipped or Stained Acrylic
   Chipped acrylic can usually be repaired with filler, but the seam may still be visible in some lighting. Stains are generally easy to remove or repair with special cleaning products provided by your dealer. Acrylic is a durable material, but it requires some maintenance to keep it looking its best.

Note: For all repairs, it’s always best to consult with your service provider or dealer before attempting a DIY fix. Repair rates typically average around $150 an hour, but this can vary by location.