Can You Run A Hot Tub With A Solar Panel?

Solar electricity can be used to power a hot tub in two ways: electric PV or solar thermal, however solar thermal is by far the most cost-effective. The average hot tub uses 300kWh per month, which could be met with solar panels rated at 2000 watts and a 24 volt 250Ah battery.

For a hot tub, how big of a solar panel do I need?

Solar Hot Tubs are all the rage right now for off-grid homes and campsites, as well as anyone looking to run a spa or hot tub in an environmentally friendly manner.

Is it possible to heat a spa using a solar pool heater? Yes, absolutely! It’s also a quick Saturday project. With just 6 hours of sunshine, spa solar heaters can heat a spa to over 100, ready to use when you get home from work!

My neighbor has an inground pool and spa, as well as a solar pool heater; his spa heats up to 104 in under 30 minutes, during sunny daylight hours. And, while there isn’t much heat in the cold, a hot tub solar heater may provide three seasons!

Your hot tub cover will maintain the heat from a solar heater until late in the evening, and you may utilize an additional spa heater or hot tub heater for nighttime hot tubbing if necessary.

How to install a Solar Hot Tub Heater

1. Solar Panel Installation: The first thing to consider is where and how the solar panels will be installed. You could just set them on the ground if you have full sun all day, but for most people, installing them on a roof or rack at a 30-45 slant works best. Angle iron or lumber can be used to construct a rack, which can then be topped with plywood or plastic and painted black. You may also use them to decorate a fence. Choose a location that receives at least 6 hours of daily sunlight; a southern exposure is ideal.

2. Purchase a Solar Pool Panel: For most spas, a single 4′ x 20′ solar panel with an area of 80 square feet is sufficient. There are also 4′ x 10′ panels available, although they are more expensive per square foot. During the day, an 80 sq. ft. solar panel will heat spas under 500 gallons to over 100 and be ready to use in the evening. You’ll need 4-5 of the 20′ solar panels to heat the hot tub in under one hour, like my friend did with the pool/spa.

Can solar panels in the UK be used to power a hot tub?

Yes, and it’s one of the finest options because it’s not only less expensive but also better for the environment.

There are two types of solar hot tub heating systems: one that employs heat exchange panels to heat the water and the other that uses ordinary solar panels with energy storage batteries.

Heat Exchange Panel

The simplest way to heat your hot tub is with a heat exchange panel. It will, however, only work if you reside somewhere with at least 6 hours of direct sunlight per day.

What is the mechanism behind it? Simply described, cold water from the hot tub’s bottom circulates through tubes to the heat exchanger, where it warms up by absorbing the sun’s heat. The tubes are placed on a black background to absorb the sun’s heat, as black absorbs all wavelengths of light and reflects none. Because light is energy, the more light a thing absorbs, the more heat it absorbs. To amplify the heat, a glass or perspex cover is frequently attached to the front.

The water is dispensed back into the top of the hot tub once it has been heated. As the water cools, it falls to the bottom of the hot tub, where it is collected before being heated again.

Is it possible to use solar panels to power electric heating?

  • Solar panels generate electricity that can be utilized for any home appliance, not just heat pumps or resistive heaters.
  • Only hot water is produced with a solar collector. It can either be utilized immediately or circulated through space heating pipes.

Solar panels and hot water collectors can both be used in properties with suitable space. Solar panels, on the other hand, are a superior investment when space is limited: their electricity may be utilized by any device, and they can also cover a large area.

What is the most cost-effective way to heat my hot tub?

It appears like the days are becoming cooler. And soaking in your own private hot tub has never sounded so good.

Maintaining a’ready to hop in’ temperature of 40 degrees Celcius during the cold Winter months, on the other hand, consumes more electricity and costs more money. Turning your hot tub fantasies into a nightmare of skyrocketing utility bills.

But don’t be concerned! A nice hot tub should cost you between 30 and 40 a month to run efficiently throughout the year. There are a few strategies to cut your energy expenditures if it’s costing you more.

We look at the seven most effective strategies to cut your hot tub’s operating costs. At the same time, you’ll get the most out of your hot tub.

What is the most economical method of heating a hot tub?

Many people set their hot tubs at 104 degrees Fahrenheit, but lowering it by two degrees will save you a lot of money on your electric bill. You can also lessen the heat by using the energy conservation setting while you’re away. In the summer, you can often turn off the heat entirely or use a lower heat setting.

How much power does a hot tub consume?

Electricity is required to operate a hot tub. They typically require 13 to 40 AMPS of power to operate. The heater, pumps, lights, and all other operating components of the hot tub are all powered by electricity. Hot tubs are typically set to operate 24 hours a day, seven days a week.

Is it more cost-effective to fill a hot tub with hot water?

A well-insulated, high-quality hot tub should cost 1.50 per day on average. The cost of a poorly insulated hot tub might be more than 100 per month! If you’re spending too much to run your spa, have a look at these suggestions for saving money.

Some things you can do to reduce hot tub running costs

Maintaining a hot tub at roughly 40 degrees Celsius every day, especially during the winter, will have an impact on your energy expenditures. You can try to lessen this by following these steps:

  • Make sure the hot tub’s panels are properly insulated to keep the heat in.
  • Filling the hot tub with hot water is less expensive than filling it with cold water and heating it. You’ll need access to an outside hot tap or a sink adaptor in the house for this.
  • Setting filter cycle durations and using the economy mode on your hot tub can help you save money.

How many solar panels are required to power a 2000-watt system?

When this page was first created, the most common size (capacity) of solar panels was 250W. 370W panels are the most popular right now (2022).

In any case, a 2kW Solar System requires 8 solar panels, assuming you use 250W panels (370W panels are slightly larger, but you don’t need as many).

Here’s a photo of a 2kW solar system on a roof made up of 12 x 165W solar panels – but keep in mind that, thanks to technological advancements, solar panels now have more than double the capacity but not double the physical size.

In case you were wondering, the panel on the lower level is an evacuated tube solar hot water system.

What is the size of a 300 watt solar panel?

What Is the Size of a 300 Watt Solar Panel? Solar panels with a capacity of 300 watts are called standard rooftop panels because they may generate enough energy to power a whole house. This means they’re about the same size as a normal household solar panel, measuring about 5-5.5 feet long and 3-3.5 feet broad.

Is it true that hot tubs save energy?

Consumer Affairs has recognized Master Spas for producing energy-efficient hot tubs. And the best way to put it is this:

Hot tubs that are well-built and of higher quality are, by definition, more energy efficient than those of lower quality. Quality begins with the manufacturer’s reputation, the materials utilized, and the construction and installation quality.


According to Consumer Affairs, effective foam insulation prevents heat from leaving the hot tub’s sides.

To keep the weather out and the energy in, Master Spas uses a unique foam insulation. The insulating efficacy of the Icynene foam insulation is maintained throughout the life of your hot tub. Others on the market use urethane-based foam, which can lose 50% of its insulating properties in just two years.

What’s better? There are no dangerous off-gases produced by the insulation. It’s also the only insulating material approved for better air quality by the Envirodesic Certification Program.


Mother Nature knows best, therefore we created our water purification system with her in mind. Contaminants, bacteria, and heavy metals are removed from the water using the EcoPur Charge Master Core Technology. Because the Ozone system eliminates diseases and bacteria while also degrading organic materials, fewer chemicals are required. Every time you take a dip in your hot tub, the water is clean and delightful.

Not only does the technology keep the water fresh and crisp, but it also reduces the amount of water that needs to be replaced. Mother Nature (as well as your water bill) will thank you for it.

LED Lights

Our hot tubs included lighting packages that were both integrated and optional. In comparison to incandescent lights, LED technology lasts longer, costs less, and delivers more light per watt.

Your backyard landscape will light brighter with less electricity, allowing you to relax in the evening.