Solar Hot Water Services

& Installation On Oahu

Oahu’s #1 Solution For Solar Hot Water Services + Installation

Residential Solar OahuSolar hot water is an important topic to think about when picking out your new solar energy system. When looking at all of the different options that you have to choose from solar hot water might not seem like a large concern, but you would be wise to reconsider.

Your hot water system is one appliance that uses up a lot of energy. In fact, your water heater can account for up to 25% of the energy you and your family use every month. That is quite a lot of energy for just some hot water, yet, it’s completely true. The luxury of hot water uses up a significant amount of energy and costs quite the pretty penny.

So what is the best hot water system that will efficiently heat your water and save you money?

Active and Passive Solar Hot Water Heater

There are really two different types of solar water heating systems. Active and passive.

Active solar water heating systems got their name from the fact that they actively pump fluid that carries the heat from the sun into an indoor storage tank. There are actually two main types of active solar hot water systems. Direct circulation (aka open-loop) and indirect circulation (aka closed loop).

Direct is more practical for warmer climates, such as ours here in Oahu. The basics of how a direct circulation system works are that the water is pumped into an insulated tank. Then it is pumped out and is sent through the solar collector and then goes back into the tank.

The other kind, indirect circulation, is better for cold climates because of the use of propylene glycol anti-freeze. This type of anti-freeze utilizes food-safe propylene glycol that helps keep it from freezing in really cold temperatures and is safe if it should ever leak. The special anti-freeze is pumped through the collector and the heat exchanger, then back into the collector.

Passive solar water heating systems are a little different than active systems in several ways. They are less expensive than an active system which is a plus, however, they aren’t as efficient as active systems are. There are two types of passive solar hot water systems. Integral collector-storage (ICS) systems and thermosyphon systems.

ICS systems the water flows through a collector located on the roof of the property. The water in the collector is heated naturally by the sun in a pipe with heat-capture coating. The hot water then flows to the standard water heater. It’s a very simple system.

Then there is the thermosiphon system. This system uses the fact that warm water rises to help the water flow through the system. As the warmer water rises and the colder water sinks the water will start to flow. That is why the collector is placed below the storage tank to help initiate the rising process.

Solar Removal Job OahuWhat are the Pros and Cons to Each?

Active Solar Water Heating Systems

Pros:

Active systems are incredibly efficient at heating water. Because they are more efficient when it comes to heating water they help save more money in the long run. An active system is more efficient when it comes to the reduction of fossil fuel use.

Cons:

The only real downside to active systems is that they are more expensive in the initial investment.

Passive Solar water systems:

Pros:

Passive systems require less equipment so they are cheaper to install initially. They do help with heating water without using standard means of energy. Passive systems help reduce the use of fossil fuels.

Cons:

They aren’t nearly as efficient as active systems. If there are periods of cloudy or rainy days their efficiency is reduced dramatically. For more information on a solar hot water system that would work best for your home or business just contact us. We can offer you a free quote on a solar hot water system. So give us a call today at (808) 784-8891.

Residential Solar Oahu

Solar hot water is an important topic to think about when picking out your new solar energy system. When looking at all of the different options that you have to choose from solar hot water might not seem like a large concern, but you would be wise to reconsider.

Your hot water system is one appliance that uses up a lot of energy. In fact, your water heater can account for up to 25% of the energy you and your family use every month. That is quite a lot of energy for just some hot water, yet, it’s completely true. The luxury of hot water uses up a significant amount of energy and costs quite the pretty penny.

So what is the best hot water system that will efficiently heat your water and save you money?

Active and Passive Solar Hot Water Heater

There are really two different types of solar water heating systems. Active and passive.

Active solar water heating systems got their name from the fact that they actively pump fluid that carries the heat from the sun into an indoor storage tank. There are actually two main types of active solar hot water systems. Direct circulation (aka open-loop) and indirect circulation (aka closed loop).

Direct is more practical for warmer climates, such as ours here in Oahu. The basics of how a direct circulation system works are that the water is pumped into an insulated tank. Then it is pumped out and is sent through the solar collector and then goes back into the tank.

The other kind, indirect circulation, is better for cold climates because of the use of propylene glycol anti-freeze. This type of anti-freeze utilizes food-safe propylene glycol that helps keep it from freezing in really cold temperatures and is safe if it should ever leak. The special anti-freeze is pumped through the collector and the heat exchanger, then back into the collector.

Passive solar water heating systems are a little different than active systems in several ways. They are less expensive than an active system which is a plus, however, they aren’t as efficient as active systems are. There are two types of passive solar hot water systems. Integral collector-storage (ICS) systems and thermosyphon systems.

ICS systems the water flows through a collector located on the roof of the property. The water in the collector is heated naturally by the sun in a pipe with heat-capture coating. The hot water then flows to the standard water heater. It’s a very simple system.

Then there is the thermosiphon system. This system uses the fact that warm water rises to help the water flow through the system. As the warmer water rises and the colder water sinks the water will start to flow. That is why the collector is placed below the storage tank to help initiate the rising process.

Honolulu Solar Storage

What are the Pros and Cons to Each?

Active Solar Water Heating Systems

Pros:

Active systems are incredibly efficient at heating water. Because they are more efficient when it comes to heating water they help save more money in the long run. An active system is more efficient when it comes to the reduction of fossil fuel use.

Cons:

The only real downside to active systems is that they are more expensive in the initial investment.

Passive Solar water systems:

Pros:

Passive systems require less equipment so they are cheaper to install initially. They do help with heating water without using standard means of energy. Passive systems help reduce the use of fossil fuels.

Cons:

They aren’t nearly as efficient as active systems. If there are periods of cloudy or rainy days their efficiency is reduced dramatically. For more information on a solar hot water system that would work best for your home or business just contact us. We can offer you a free quote on a solar hot water system. So give us a call today at (808) 784-8891.