How Much Power Does a Hot Tub Use?

We often find there are two very distinct types of hot tub owners.  One type is the romantic.  This is the person who envisions their hot tub as a place of relaxing solitude or as a socialization centre for family and friends.  The other type of hot tub owner is the pragmatist. Although they relish all the opportunities that a hot tub affords, they’re keenly aware of how it works, how it can work better and what needs to be done to keep it working properly.  This article is geared towards the pragmatist.  One of the things that often concerns those who care about the practicalities of any given situation is the cost of operation.  In this case, how will my energy bills be affected and how much power does a hot tub use?  Although the answers will be slightly different for every hot tub owner, we can outline a few generalities that might give you a better idea.

What Parts of The Hot Tub Use the Most Power?

The main consumers of electricity in a hot tub are the water heater and pump.  How much power each of these hot tub components use will depend on several different variables.  Consider the size of the hot tub, its voltage rating, how often it’s being used, the water temperature you like to maintain, the surrounding climate, the amount of cabinet insulation built into the hot tub, the frequency with which you replace the cover and/or thermal blanket, the innate energy efficiency of the hot tub and more.  As you can understand, with such a wide range of variables it’s tricky to predict exactly how much power a hot tub will use.

Calculating Kilowatt Hours

If you’re attempting to estimate how much power your hot tub will use and translate that into a monthly dollar value, you’ll first need to calculate the number of kilowatt hours (kWh) the hot tub consumes.  A 110 Volt plug and play hot tub will generally draw less power than a 220 Volt hardwired hot tub.  We’ll estimate the plug and play hot tub’s heater and pump will use around 3000 Watts or 3 kWh.  The hardwired tub will be a little more than twice that at 7.5 kWh.  It’s important to remember that these are just general estimates, and your own hot tub may use more or less power.  However, once you’ve calculated the number of kWh the hot tub uses, you can multiply this by the rate of electricity in your area to determine the cost of running your hot tub.  Speak to your hot tub dealer about these calculations as they will have a better understanding of the amount of power the hot tub of your choice will use as well as the electricity rates in your area.

How to Reduce How Much Power A Hot Tub Uses

There are several tricks of the trade that can greatly reduce how much power a hot tub uses.  Most of these are related to general maintenance and care of the hot tub and don’t really require much extra effort beyond what you should be doing to keep your hot tub in good condition. 

Use A Cover

By replacing the cover whenever the hot tub isn’t being used, you’ll drastically cut back the amount of heat that escapes the water.  Although often considered an accessory, a well-insulated, properly fitted cover is, in reality, a necessity.

Keep the Heater Running

You might think the hot tub would use less power if you turned off the heater after each use, but you’d be wrong.  Maintaining a consistent, steady temperature by keeping your heater running is a much more efficient use of energy.

Keep Up with Maintenance

Keeping your hot tub clean will make it run more efficiently.  Regularly skim the water surface to get rid of floating debris, routinely clean and replace your water filters and perform deep cleanings as often as recommended. 

Now that you have a better idea of how much power a hot tub will use, download a free buyer’s guide for extra information.

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