13amp or 32amp Hot Tubs, What Are They?
Understanding the differences between 13-amp and 32-amp models is important when choosing a hot tub. Fortunately, they’re easy to understand and can be explained at our hot tub shop.
This decision affects installation, performance, running costs, and overall enjoyment.
Here’s a detailed comparison to help you choose the best hot tub for your lifestyle. Let’s start with the basics.
Understanding Hot Tub Amp Ratings
The amp rating indicates the electrical power a hot tub requires.
- 13 Amp Hot Tubs: Also known as “plug-and-play” models, these can be plugged into a standard UK household socket.
- 32 Amp Hot Tubs: These require a dedicated circuit installed by a certified electrician for higher power demands.
Key Features of a 13 Amp Hot Tub
Plug-and-Play Convenience
13-amp hot tubs are easy to install, connecting directly to a standard 3-pin plug, eliminating the need for professional electrical work. Ideal for renters or those avoiding extra installation costs.
Energy Efficiency
These models tend to be more energy-efficient due to their lower power needs, making them budget-friendly over time. They function similarly to household appliances, protected by the fuse inside the plug such as kettles, washing machines or dishwashers.
Power and Feature Limitations
Due to the lower power, 13-amp hot tubs can struggle to run multiple functions simultaneously. Extended use of jets may lead to fluctuating water temperatures.
Examples of 13amp Hot Tub Models
- Lay-Z-Spa Hot Tubs: Affordable and popular for their inflatable design.
- Canadian Spa Plug & Play Models: Durable and user-friendly.
- RotoSpa Hot Tubs: Lightweight and space-efficient.
Ideal For: Casual users, smaller households, or those on a budget.
Key Features of a 32 Amp Hot Tub
Superior Performance
A 32-amp hot tub provides robust performance with powerful jets and consistent temperature control. Perfect for those who seek an uninterrupted and luxurious experience.
Professional Installation Required
A 32-amp system demands professional wiring, including an isolation switch, proper grounding, and an RCD (Residual Current Device). Compliance with UK electrical regulations ensures safety and optimal operation.
Advanced Features
These hot tubs support advanced features, such as powerful jets and enhanced heating systems, making them ideal for frequent or extended use.
Comparable Power
A 32-amp rating aligns with the power of electric vehicle (EV) chargers, emphasising its capacity.
Installation Costs
- 13 Amp: No extra installation fees.
- 32 Amp: Professional installation costs range from £200 to £500.
Main Comparisons of 13amp vs. 32amp Hot Tubs
| Feature | 13-Amp Hot Tub | 32-Amp Hot Tub |
|---|---|---|
| Installation | Plug-and-play | Professional wiring required |
| Running Costs | Lower | Higher |
| Simultaneous Features | Limited | Fully functional |
| Water Temperature | Can fluctuate | Maintains temperature |
| Power of Jets | Moderate | High |
13-Amp Hot Tubs:
- These are 2kW heaters with a single pump system. However, they can’t run the heater and pumps simultaneously, which results in quicker temperature loss, especially in colder conditions. This is because heat loss through the surface water (around 60%) isn’t counterbalanced effectively when pumps are active.
- Installation is simple, requiring only a standard waterproof plug, making it cost-effective initially.
32-Amp Hot Tubs:
- Use more power due to a 3kW heater, so can heat faster and typically, they run multiple pumps, but they compensate by maintaining heat better. The ability to run the heater and pumps simultaneously ensures a consistent water temperature during usage, even in colder climates.
- These models require a dedicated electrical setup, which adds to the installation cost but provides greater energy efficiency in the long term.
Cost Considerations of 13amp vs 32amp Hot Tubs
Installation
- 13 Amp: Plug-and-play, no additional installation fees.
- 32 Amp: Requires a professional, costing £200-£500.
Running Costs 13-amp models can be more economical but you can assume 24.50p per kWh. 32-amp models, while more costly to run, are designed for optimal efficient energy use with full functionality at around £1 to £1.30 per day.
13Amp or 32Amp Which One Should You Choose?
Choose a 13 Amp Hot Tub If:
- You’re new to hot tubs and need a low-cost option.
- You’re renting or can’t modify your electrical system.
- Your use is occasional or mainly for relaxation.
Choose a 32 Amp Hot Tub If:
- You want superior performance with advanced features.
- You plan to use it frequently or for long sessions.
- You need a hot tub model that supports multiple users.
Common Questions About Hot Tub Amp Ratings
Can I Convert a 13 Amp Hot Tub to a 32 Amp?
No, a 13-amp model cannot be upgraded to 32-amp due to internal component design.
Are 32 Amp Hot Tubs Worth the Higher Cost?
Yes, if you value advanced features and frequent use, the higher cost is justified.
Do I Need Special Permission for a 32 Amp Installation?
Planning permission isn’t required, but installation must comply with UK safety standards. Consult an electrician.
Are 32 Amp Hot Tubs Safe?
Yes, if installed correctly by a certified professional.
Is Maintenance Required?
Both models need regular maintenance, including water care and filter cleaning. 32-amp models with more features may need additional upkeep.
13amp vs 32 Amp Hot Tubs - Your Decision
Understanding the differences between 13-amp and 32-amp hot tubs ensures you make the best choice for your family. While 13-amp models offer simplicity and affordability, 32-amp models deliver enhanced performance and advanced features. Assess your budget, usage, and long-term goals to find your perfect hot tub.
