This same principle of
solar thermal energy is what is used in many of the world’s largest
solar power plants, albeit in a much larger scale. By using this
principle, you too can enjoy the benefits of solar
thermal energy while
sitting in your solar hot tub in the comfort of your own home.
Benefits of Solar Hot Tubs
- Solar thermal
heating elements are cheap to purchase
- They are also
easy to install and can
be done without professional help
- Can save you a lot of
money on the high
cost of heating your hot tub
- Can make your spa
free, which reduces pollution and lowers your carbon footprint
- Require little to no
installed and should continue to function for years to come
Solar Spa Heating Explained
When deciding to use solar
thermal energy to heat your spa or hot tub, you have several different
options to choose from. To ensure that your hot tub or spa is fully
solar powered, it may be necessary to use all of the options available
to you to keep your water sufficiently heated.
The first option is a
hot tube cover which absorbs and traps a layer of hot air
the cover and the surface of the water, and this heat is then
transferred to your water. If you already own a spa, then you probably
know a lot about the importance that a spa cover will make in
regulating the temperature of your water. In fact, nothing allows heat
to escape faster than having your hot tub uncovered.
A solar spa cover will
still perform the vital function of insulating your spa to prevent heat
loss, but with the added benefit that it is also able to absorb heat
from the sun and transfer it to the water in your hot tub.
cover is necessary for your spa anyways, there is no reason why you
shouldn’t invest in a solar cover to help offset your heating
This is definitely the
cheapest option for solar spa heating, however it is far from the most
efficient, but it still a good place to start for those unsure about
solar heating or for those on a tight budget.
The second option for
heating your solar spa hot tub is to use solar thermal panels,
are usually placed on your roof. This option is definitely the most
useful, and when used properly, can usually provide all of the heat
needed to keep your spa at the right temperature.
There are several
different types of solar thermal panels that you can choose from, and
the right type for you depends on where you live, as some systems can
only be used
in hot climates or else they must be completely dismantled
and put away before they freeze.
system has slight
differences in the way the collector is constructed, however they all
basically function in the same way. The panels themselves are black so
they absorb the sun’s heat, which is then transferred to the water
after being circulated through a series of tubes running throughout the
These panels can in theory
but it is recommended that they be installed on your roof as this is
usually the place where they will receive the most sunlight. The panels
themselves are also quite large, so placing them on the roof is a good
way to keep them out of the way and to ensure that the fragile glass
tubes within the collector do not get damaged.
Purchasing and installing
solar thermal panels does require a bit of an initial investment,
however if you ensure that the system you buy is sufficient for the
size of hot tub you own, then it should easily pay for itself in a few
years time. Overall, this is the most
efficient way to heat your spa
using solar energy. If you are really serious about reducing pollution
and lowering your energy costs, then this is really the only way to go
for solar hot tub heating and the only way to completely heat your hot
tub using only solar energy.
A Truly Solar Powered Spa?
So now you know how to
heat your hot tub using solar thermal energy, which goes a long way
towards eliminating the amount of pollution generated by your hot tub.
Nonetheless, if you only use solar thermal energy to heat your spa,
then you still cannot say that you have a truly solar powered spa. This
is due to the fact that you are still using electricity to power your
spa’s jets and filtration system.
The only way to have a
completely solar powered hot tub is to install photovoltaic solar
panels to generate the electricity necessary for your spa to function.
A small PV system should be sufficient for your spa’s electricity
needs, although you could use a much larger system and power the rest
of your home as well if you wish. You can even install the PV panel on
the roof next to your solar thermal panels.
If you are serious about
converting your spa to be solar powered, then there are hot
tub solar water heaters available
which include all of the necessary components to make your hot tub
completely solar powered. You can also buy the different components
separately, or use only the ones you want. No matter what you choose,
you will enjoy the benefits of relaxing in your solar powered hot
If you are an avid DIY'er,
the following articles will be of use to you. The following websites
all contain detailed step
by step instructions for installing your own hot tub
with a solar water heating system. All the necessary numbers, charts
and calculations can be found here:
to Facts About Solar
to Solar Energy