How to Troubleshoot And Fix Hot Tub Heater Issues in 2024?

Heating issues in a hot tub can be frustrating, but they can often be resolved with some troubleshooting. Here are some steps to help you troubleshoot and fix hot tub heater issues:

Check the water level: Ensure that the water level in your hot tub is sufficient. If it's too low, the heater may not function correctly.
Inspect the power supply: Check if the hot tub is receiving power by checking the circuit breaker and ensuring it's switched on. You can also check if the power cord is securely connected to the tub.
Examine the heater element: The heater element is responsible for heating the water. Inspect it for any signs of damage or corrosion. If you notice any issues, you may need to replace the element.
Clean the filter: A dirty or clogged filter can restrict water flow, causing the heater to shut off. Remove the filter and clean it or replace it if necessary.
Test the thermostat: The thermostat controls the hot tub's temperature. If the temperature is not reaching the desired level, check the thermostat settings and make sure it's functioning correctly. You may need to calibrate or replace the thermostat.
Check for airlocks: Airlocks can prevent water from circulating properly and reaching the heater. Check if there are any airlocks in the plumbing system and release them if needed.
Inspect the pressure switch: The pressure switch detects if enough water is flowing for the heater to operate safely. Ensure that the pressure switch is working correctly by testing it or replacing it if necessary.
Bleed the pipes: Sometimes air can become trapped in the pipes, preventing proper water flow. Bleed the pipes by opening the bleed valve or loosening the union connections to release any trapped air.
Check the control board: The control board is responsible for regulating the heater's operation. Inspect it for any visible damage or loose connections. If needed, replace the control board.
Seek professional assistance: If you've gone through all the troubleshooting steps and still can't identify or fix the issue, it may be best to seek help from a professional hot tub repair technician. They have the expertise and tools to diagnose and resolve more complex heater problems.

Remember to always refer to your hot tub's manufacturer's guide and safety instructions when troubleshooting or attempting any repairs.

Best Hot Tubs of 2024

Rating is 5 out of 5

MSPA, Oslo, Frame Series, Fixed Body, Movable, Hot Tub & Spa, Wi-Fi, App Controlled, Jets & Bubble System – 6 Person

EASY ASSEMBLY: Plug & play system & simple 4 easy screws on 4 corners, no tools required and rest is all plug in modules. Hard Body frame with Rhino Tech 6 layer reinforced PVC inner liner
WI-FI ENABLED & APP CONTROLLED: Say goodbye to the days of reaching over your spa or worse having to get out of your relaxing soak just to change some settings. Have full control of your MSpa at all times right at your fingertips. Enjoy the easiest operation and usability through our intuitive UI. Easily receive tips, notices, and alarm messages on the go so you’re always in the loop.
OLED TOUCH SCREEN: All your spa controls in one convenient unit! Easily control your spa from your easy to use control center. Our newest all-in-one control box now features a protective cover to shield from harsh outdoor elements such as direct sunlight and extreme weather conditions.
HYDROMASSAGE JETS PLUS: Going beyond just comfort, hydromassage provides amazing health benefits for your mental and physical health. Enjoy an immersive at home experience that has been shown to relieve muscle soreness and tension, soothe minor aches and pains, and reduce stress and anxiety.
LED LIGHT - LIGHT UP THE NIGHT: Take your spa experience to the next level with beautiful lighting. Our light up spas feature an LED light strip at the bottom to make your spa GLOW. Translucent fabric elements allow beautiful patterns to shine through for a truly romantic environment for your evening soaks. Switch colors based on your mood and enjoy late into the night.
REVOLUTIONARY FIXED BODY: HOT TUB & SPA option for houses, apartments, buildings, or tight spaces that does not have access to move a normal Fixed Frame Hot Tub over the roof.
SMART FILTRATION: To ensure the best quality of water in the spa, the filter cartridge is suggested to be cleaned after each use and replaced every 3-5 days. Feel hard to follow the tips each time? Don’t worry there will be a reminder popping up at least once a week when spa keeps working.
ALL-AROUND BUBBLING DESIGN: 360° air jet system fills the spa with thousands of bubbles, staggered jets push bubbles into the center of the spa creating a balanced, all-encompassing body massage.
ANTI-ICING SYSTEM: When the water temperature is lower than 1°C (33.8°F), the heater runs automatically until the water is heated up to 3°C (37.4°F). This will help prevent water from freezing. The circulation system, pump, and pipe will be saved.

Buy It Now

Rating is 4.9 out of 5

Life Smart LS100 Taupe 4 Person Plug and Play Thermal Friction Heating Square Hot Tub Spa with 13 Jets, Black Cover, & Multi Color LED Lighting System

Provides relaxation at the touch of a button for up to 4 people with the convenient digital command center with a quick assembly; Includes lightweight polyester cover that resists abrasions and is less prone to fading from the sun
Pampering yourself is easy with the 13 hydrotherapy high-powered jets with an underwater, multi-color LED light system, giving you the ultimate spa experience
Energy efficient and exceeds California Energy Commission mandates for hot tub energy consumption, so there is no need to turn the temperature down while not in use
Innovative thermal friction heating system eliminates the need for a separate heater with full-foam insulation, and the included thermal locking cover will keep the heat in
Water capacity of 205 gallons with an exterior of 70 inches long, 61 inches wide, and 32 inches tall, while the interior measures 57 inches wide and 28 inches tall

Buy It Now

Rating is 4.8 out of 5

4 PERSON HOT TUB 1200W HEATER - ALEKO Inflatable Hot Tub with hot tub accessories heats up to 104°F at 5°/hr. Easy 5 minute set up with automatic inflation hose. Portable hot tub is cleaner and hotter with included tub cover (polyurethane).
AUTOMATIC INFLATION, EASY SETUP - ALEKO 4 Person Inflatable Hot Tub features push-button automatic inflation, easily portable. Inflatable tub heats quickly with powerful hot tub heater and tub cover. ALEKO Outdoor Hot Tubs remain clean with inflatable pool filter (x3).
ALL MATERIALS INCLUDED: ALEKO 160 Gallon Tub (5' x 5' x 2' feet), fitted polyurethane cover to maintain heat, inflation hose, 3 filters, 1 filter cover, ground cloth, rubber plug, repair kit, 1200W Heater, 1800W (110-120V) power pack, 600W bubbler, 120 Volt AC filter pump. Connect directly to outlet for best results.
DIGITAL PANEL, BUBBLER JETS - ALEKO Portable Hot Tub features massaging jet bubbles, temperature control, and inflation on easy to use digital panel. Upgrade to ALEKO home spa and tub for convenient use all year long, for travel and vacations, customer support and premium quality.
ELEGANCE AND QUALITY - ALEKO 4 Person Inflatable Hot Tub provides long lasting service for your family. We stand behind the Amazon 30-day money-back guarantee. Customer service available to assist with shipment, delivery, measurement, install, and tech support needs.
ALEKO does not ship Inflatable Hot Tubs to residents of California, due to state requirements for energy efficiency.

Buy It Now

Rating is 4.7 out of 5

Intex 28481E Simple Spa 77 Inch x 26 Inch 4 Person Outdoor Portable Inflatable Round Heated Hot Tub with 100 Bubble Jets, Carry Bag, and Cover, Gray

Pamper and treat yourself with the 100 soothing high-powered jets that give you the ultimate spa experience in relaxing water up to 104 degrees Fahrenheit
Round 77 by 26-inch above-ground blow-up tub provides relaxation at the touch of a button for up to 4 people with the easy-to-use tilt-adjustable control panel
Spa for adults has a built-in hard water treatment system ensures a gentle feeling on skin, clothes, and the entire spa system; Water capacity: 210 gallons
Includes insulated cover, heater/blower system, 2 filter cartridges, thermal ground cloth, inflation hose, carry bag, floating chlorine dispenser, and test strip
Disclaimer: This item requires 28523E energy efficient cover for purchases shipped to California, if not, the order is subject to be canceled due to shipping restrictions

Buy It Now

Rating is 4.6 out of 5

Bestway Miami SaluSpa 2 to 4 Person Inflatable Round Outdoor Hot Tub Spa with 140 Soothing AirJets, Filter Cartridges, Pump, & Insulated Cover, Black

Round 2 to 4-person spa has you relaxed in no time with a soothing massage system, rapid heating, and integrated water filtration
Built-in AirJet system with 140 jets releases warm air into the water, while the digital control panel adjusts the temperature up to 104 degrees Fahrenheit
Features a FreezeShield automatic heating function to prevent inner components from freezing during colder temperatures to ensure long-lasting use
Includes a pump, an insulated cover, cupholders, ChemConnect dispenser to main clean water, filter cartridges, and repair patch
Constructed of durable DuraPlus materials with cushioned, comforting floors and a convenient drain valve for ultimate stability; Dimensions (L x W x H): 71 x 71 x 26 inches

Buy It Now

Rating is 4.5 out of 5

RELXTIME 73in x 73in 4-6 Person Inflatable Hot Tub Spa, AirJet Outdoor Portable Hottub with 130 Bubble Jets, Filter Cartridges, Insulated Cover, Grey

RELAXING INFLATABLE SPA: Square 4 to 6-person spa has you relaxed in no time with a soothing massage system, rapid heating, and integrated water filtration. Using a touch digital control panel, easy to inflate & deflate
DURABLE & INNOVATIVE CONSTRUCTION: The spa's durable PVC material and beam construction offer superior strength and stability while ensuring your inflatable spa never loses its shape
ENERGY EFFICIENT SPA COVER: Inflatable cover provides extra insulation and minimizes heat loss; this cover will help protect your Hot Tub from rainwater pooling
FREEZE PROTECTION: Freeze protection automatic heating function prevents inner components from freezing, you can use your inflatable spa in colder temperatures
ACCESSORIES: 1 pool cover, 1 inflatable caover, 4 seat cushions, 2 filter cartridges & 2 covers, 20 strips water testing, 2 PVC patches, 1 spanner, 1 inflation hose, 1 air valve cap, 1x way valve, 1 x barometer, 1 drainage bung, 2 child safety key, 1 power cable, 1 storage bag, 1 instruction manual.

Buy It Now

Rating is 4.4 out of 5

Intex SimpleSpa Bubble Massage 4 Person Inflatable Round Hot Tub Relaxing Outdoor Water Spa with Soothing Jets, Insulated Cover, and Storage Bag, Gray

Inflatable hot tub offers relaxation in comfort with 100 soothing high-powered jets for a refreshing massage and an ultimate spa experience
Features an all-in-1 control unit to adjust the heating system to suit personal preferences of water temperatures
Accommodates up to 4 people with a convenient cup holder, a floating chemical dispenser, and 2 easy-to-replace filter cartridges for cleaner water
Sturdy horizontal beam construction for stability that withstands outdoor elements for long-lasting use with a water capacity of 210 gallons
Includes an insulated cover to minimize heat loss, a thermal ground cloth, and a carry bag for easy storage; Dimensions (L x W x H): 77 x 77 x 26 inches

Buy It Now

Rating is 4.3 out of 5

Bestway Helsinki SaluSpa 7 Person Inflatable Outdoor Hot Tub Spa with 180 Soothing AirJets, Filter Cartridges, Pump, and Insulated Cover, Brown Wood

ATTENTION: Shipping restrictions may apply. This model is not available for sale in the following states: CA, MA, ME, NJ, NV, NY, OR, RI. Residents of these states may select the comparable Bestway model sold with energy-efficient EnergySense thermal cover to avoid cancellation.
Round 5 to 7-person spa has you relaxed in no time with a soothing massage system, rapid heating, and integrated water filtration
Built-in AirJet system with 180 jets releases warm air into the water, while the digital control panel adjusts the temperature up to 104 degrees Fahrenheit
Features a FreezeShield automatic heating function to prevent inner components from freezing during colder temperatures to ensure long-lasting use
Constructed of durable drop stitch material that provides rigidity while still being lightweight for easy portability when deflated
Includes a pump, an insulated cover, cupholders, a ChemConnect dispenser to main clean water, a filter cartridge, and a repair patch

Buy It Now

Rating is 4.2 out of 5

Jleisure Avenli Aegean 1,200 Liter 65 inch 6 Person Portable Rigid Foam Wall Hot Tub Spa with Insulated Cover and Floor Protector, Black

Rigid Foam Spa measures 65 inches long, 65 inches wide, and 27 inches tall, the ideal size for up to 6 adults
Insulated foam walls act as an insulator and retain the heat whilst the Tri-Tech PVC material provides a durable shell for durability and longevity
Features 90 bubble jet holes and a 104-degree Fahrenheit rapid heating system for longer and more comfortable spa relaxation anytime
Digitally controlled pump for a user-friendly operation; Note, filter and filter cartridge are located in the back pocket of the pump
Includes insulated top cover with double-locking safety clips, floor protector, pump unit, 2 filter cartridges, flexible inflation hose, and repair patch

Buy It Now

Rating is 4.1 out of 5

INTEX 28441EP PureSpa Greywood Deluxe Spa Set: Includes Energy Efficient Spa Cover – Spa Control App – Wireless Control Panel – 6 Person Capacity – 85" x 28"

✔ FIBER-TECH BEAM CONSTRUCTION – Innovative Fiber-Tech Technology offers superior structural stability while maintaining a comfortable surface for a luxorious and refreshing spa experience
✔ THE ULTIMATE SPA EXPERIENCE – Control all Spa functions from your phone or tablet; program Spa use and maintenance remotely with WIFI connectivity; available on App Store and Google Play App
✔ REMOVABLE WIRELESS CONTROL PANEL – The Greystone Deluxe PureSpa includes a removable wireless control panel that features integrated wireless charging; 48 hours of operation on a single charge and conveniently attaches to top of the tub
✔ ENERGY EFFICIENT SPA COVER – High density thermal-resistant foam provides extra insulation and minimizes heat loss; this cover enhances the Spa performance while improving the energy efficiency by as much as 50%
✔ PREMIUM ACCESSORIES – Everything you need for pure relaxation! Let your worries bubble away with 2 contoured headrests and a mood-setting multi-colored LED light (requires 3 AAA batteries, not included)
✔ CUSTOMER SATISFACTION – Our dedicated customer service team is available via phone, chat, or email to help with any questions you may have on use, installation, or service needs; INTEX's 1-Year Manufacturer Limited Warranty gives you peace of mind

Buy It Now

Rating is 4 out of 5

INTEX 28429EP PureSpa Plus Bubble Massage Spa Set: Includes Energy Efficient Spa Cover – 2 Contoured Headrest – LED Light – 4 Person Capacity – 77" x 28"

✔ FIBER-TECH BEAM CONSTRUCTION – Innovative Fiber-Tech Technology offers superior structural stability while maintaining a comfortable surface for a luxorious and refreshing spa experience
✔ HARD WATER TREATMENT SYSTEM – Built-in Hard Water Treatment System makes water gentler on skin, clothes and the entire spa system; hard water buildup limits water flow and reduces the life of your spa
✔ HEATED AIR BUBBLE TECHNOLOGY – The Positive Temperature Coefficient (PTC) heater is designed to maximize heat transfer to the water, while ensuring the highest level of safety, performance, and longevity
✔ ENERGY EFFICIENT SPA COVER – High density thermal-resistant foam provides extra insulation and minimizes heat loss; this cover enhances the Spa performance while improving the energy efficiency by as much as 50%
✔ PREMIUM ACCESSORIES – Everything you need for pure relaxation! Let your worries bubble away with 2 contoured headrests and a mood-setting multi-colored LED light (requires 3 AAA batteries, not included)
✔ CUSTOMER SATISFACTION – Our dedicated customer service team is available via phone, chat, or email to help with any questions you may have on use, installation, or service needs; INTEX's 1-Year Manufacturer Limited Warranty gives you peace of mind

Buy It Now

How to fix a hot tub heater that trips the circuit breaker?

If your hot tub heater is tripping the circuit breaker, it could indicate a problem with the electrical system or the heater itself. Here are some steps to fix it:

Turn off the power: Before attempting any repairs, make sure to disconnect the power supply to the hot tub. Locate the circuit breaker for the hot tub and switch it off.
Inspect the wiring: Begin by inspecting the wiring connections. Check for loose, corroded, or damaged wires. If you find any issues, tighten the connections or replace the faulty wires.
Reset the circuit breaker: After checking the wiring, reset the circuit breaker by turning it on. Sometimes, a simple resetting may solve the issue.
Check the heater element: If the circuit breaker trips again, the problem may be with the heater element. The element could be faulty or damaged, causing it to draw excessive current and trip the circuit breaker. Turn off the power supply, and visually inspect the heater element for any signs of damage or corrosion. If the element appears damaged, you'll need to replace it.
Check the thermostat: Another possible cause for the circuit breaker tripping could be a malfunctioning thermostat. The thermostat regulates the temperature of the water and ensures the heater shuts off at the desired temperature. If the thermostat is defective, it may cause the heater to overheat, leading to a circuit overload. Check the thermostat for any signs of malfunction, such as erratic temperature readings, and replace it if necessary.
Check for water flow issues: Insufficient water flow can cause the heater to overheat and trip the circuit breaker. Check the water flow by ensuring all filters and jets are clean, the water level is sufficient, and the circulation pump is functioning properly. If necessary, clean or replace the filters, remove any blockages, or check for any issues with the circulation pump.
Call a professional: If you've tried all the steps mentioned above and the circuit breaker continues to trip, it's best to call a professional electrician or a hot tub repair technician. They will have the necessary expertise to diagnose and fix the problem safely.

Remember, working with electricity can be dangerous, so if you're not comfortable with these steps or unsure about certain aspects, it's always best to seek professional help to avoid any accidents.

How to determine if a hot tub heater needs a complete replacement?

There are a few signs that can indicate if a hot tub heater needs a complete replacement:

No Heat: If the hot tub is not heating up or unable to maintain a consistent temperature, it could indicate a problem with the heater. Check if the thermostat is set correctly and if the water circulation is normal before jumping to the conclusion of a complete replacement.
Age: Consider the age of the hot tub heater. Most heaters have a lifespan of about 5-10 years, depending on usage and maintenance. If the heater is close to or beyond its expected lifespan, it might be more cost-effective to replace it rather than investing in repairs.
Frequent Repairs: If the heater requires frequent repairs, it may be a sign that it is reaching the end of its lifespan. Continuously fixing the same issue can be costly, and it might be more practical to replace the heater entirely.
Rust or Corrosion: Inspect the heater for signs of rust or corrosion, such as discolored or deteriorating metal. This could indicate deterioration of internal components, rendering the heater ineffective or potentially dangerous.
Strange Noises or Smells: Unusual noises or smells coming from the heater could signify a malfunction. If the heater is making grinding or rattling sounds or emitting a burning smell, it is likely time to replace it.
Leaks: Leaking water around the heater is a clear indication of a problem that may require replacement. Even if the leak is small, it can lead to further damage if left unattended.
Inefficient Heating: If the hot tub takes an excessive amount of time to heat up, struggles to reach the desired temperature, or if the water is inconsistently heated, it could indicate that the heater is no longer functioning optimally.

In any case, contacting a professional hot tub technician or electrician is advised for a proper assessment of the heater's condition. They can help determine if a complete replacement is necessary or if repair options are available.

What is the ideal water pH level for a hot tub heater?

The ideal water pH level for a hot tub heater is typically between 7.2 and 7.8. This range ensures optimal performance and efficiency of the heater while maintaining a safe and comfortable environment for users. pH levels outside of this range can cause corrosion or scaling issues in the heater, reducing its lifespan and potentially leading to costly repairs. Regular testing and adjustments of the water's pH level are necessary to maintain the ideal conditions for the heater and the overall hot tub system.

How to prevent hot tub heater overheating?

To prevent a hot tub heater from overheating, you should follow these steps:

Follow manufacturer's instructions: Read and understand the manufacturer's guidelines for operating and maintaining the hot tub. These instructions will provide specific information about the heater and its limits.
Maintain proper water chemistry: Regularly monitor and maintain the water chemistry according to the recommended levels. Balanced water chemistry helps prevent corrosion and scaling, which can damage the heater and cause it to overheat.
Clean and maintain the filter: Clean or replace the hot tub filter regularly to ensure proper water flow. A dirty filter can cause the heater to work harder, potentially leading to overheating.
Check for sufficient water level: Ensure that the water level in the hot tub is always at the recommended level. If the water level is too low, the heater may not be able to dissipate heat properly and may overheat.
Install a high-limit switch: Consider installing a high-limit switch or thermostat as an additional safety measure. These devices automatically shut off the heater if the water temperature exceeds a safe level.
Avoid blocking the heater: Ensure there are no obstructions around the heater, such as towels or other objects. Proper air circulation is essential for the heater to dissipate heat effectively.
Regular maintenance inspections: Schedule routine inspections and maintenance for your hot tub's heater by a qualified technician. They can identify any potential issues and ensure that the heater is functioning correctly.
Monitor the water temperature: Keep an eye on the water temperature gauge or use a digital thermometer to monitor the water temperature regularly. If it starts reaching unusually high levels, turn off the heater and investigate for any issues.

Remember, if you suspect that your hot tub heater is malfunctioning or overheating, it is essential to turn off the power to the heater and seek professional help for repairs or further guidance.

How to Troubleshoot And Fix Hot Tub Heater Issues?

Best Hot Tubs of 2024

How to fix a hot tub heater that trips the circuit breaker?

How to determine if a hot tub heater needs a complete replacement?

What is the ideal water pH level for a hot tub heater?

How to prevent hot tub heater overheating?

Related Posts: