Detailed Hot Tub Heater Replacement Guide


Malfunctions in hot tubs happen like in any other piece of technology, so it is good to be prepared. Hot tub heater replacement might be one of the first changes you will do to your hot tub. There’s no reason to worry because spa heater replacement is something you can do on your own in just a couple of minutes. Still, you need to know some basics to be sure that you will do everything right.

There two main heater categories. The first one is gas heaters that function outside of the hot tub. Electrical heaters are the second type and they are typically housed in a casing. Quickly, go check which one you have and continue reading!

Hot Tub Heater Replacement Guide

1. Power and Water

You need to make sure that the power is off before you start with the spa heater replacement. Pay attention, and if needed double-check whether the breaker is turned off. Check the water valves right after and make sure they are turned off too.

2. Water Drain

You need to drain all the water out of the hot tub to start with the replacement. Just use the same drain you use to change the levels of the water to do so.

3. Power Line

The heater has a power line connected to it. Remove it, but only after you are sure that the power is turned off and that there’s no water in the tub. There are two ways this power line can be connected. Just unplug it if it is plugged into the control unit. On the other hand, you will have to disconnect the wires if it is hardwired into the unit. To be sure that you will rewire them correctly later, label each one before you pull them.

4. Remove the Heater

The heater unit is held down by the couplings – use a pipe wrench to remove them. Both sides of the heater have large couplings, so you won’t be able to miss them. Carefully remove the heater once it is removed.

5. New Heater Installment

Installing the new heater will require you to do all of the steps above, just in reverse. Check for the debris in the housing area, and if there is some – get rid of it. Make sure that the hot tub heater is leveled once you put it inside the area.

6. Connect Everything

Grab your pipe wrench one more time and make sure those couplings are tightened enough. Reconnect the power plug once you are sure that the heater is situated in place. Since you labeled the wires before, reconnecting them to the right areas shouldn’t be a problem.

7. Refill

Start refilling the hot tub after you’re done with the spa heater replacement and reconnections. Fill the tub and let the water find its level. Let the heater start warming the water by turning the power back. You should be able to hear a sound once the pump starts circulating the water.

8. Gas Heaters

There’s no much difference in replacing a heater that uses gas from an electrical one. You just need to disconnect the gas lines, shut down the power and the gas. The gas heater warms the water that gets to it via inlet and outlet pipes. Disconnecting them will also be necessary.


Q: How much does it cost to replace a heater in a hot tub?


The price will depend on the type of tub you have. If your heater is causing you problems, you could replace the heater element for no more than 30 dollars. On the other hand, Balboa spa heaters, tubes, and other elements will cost around $120. Hot Spring and Sundance Titanium heaters cost up to $320.

Q: How do you replace a hot tub heater?


You can replace a hot tub heater in a few easy steps. Make sure your tub is turned off before you start replacing the heater. Then, drain all the water and remove the power line and the heater. Now you can install the new heater element. Lastly, reconnect everything and refill the tub.

Q: How do I know if my hot tub heater is working?


In case you do not have any problems heating the tub water, this means the heater is working properly. If your tub is not heating and the desired temperature cannot be reached, you may have a problem with the heater.

Q: How long does a hot tub heater last?


It is generally considered that heaters last about 5 years. But, the best-case scenario would be avoiding hot tub replacement fully. Just make sure you take good care of regular maintenance, which should keep the heater in good condition and avoid potential damage.

Q: Are hot tub heaters universal?


The answer to whether hot tub heaters are universal is a bit complicated, and it could be both yes and no. There are many different hot tub manufacturers available. On the other hand, there is not much variety when it comes to electronic tub manufacturers. That is why some parts can be universal, but that is not always the case.

Globo Surf Overview

Removing the hot tub heater is not a difficult thing to do. However, it is necessary if your heater stops working. You can use the stock heater you get when you buy a hot tub or you can use an upgraded version of it. An upgraded version will most likely perform much better and save you a bit of money on electricity.

Replacing the heater can easily be done by following our hot tub heater replacement guide. Keep in mind you should completely turn off the tub before attempting any repair. Simply drain the tub and then remove the power line as well as the heater. Check for the debris and then replace the heater element, making sure it is leveled. Lastly, refill the tub and hop in for a relaxing session.

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My name is David Hamburg. I am an avid water sports fan who enjoys paddle boarding, surfing, scuba diving, and kite surfing. Anything with a board or chance I can get in the water I love! I am such a big fan I decided to start this website to review all my favorite products and some others. Hope you enjoy!