Solar Water Heating


Calcualte Solar Pool Heating

posted Dec 20, 2013, 5:48 AM by San Diego Solar   [ updated Mar 19, 2015, 3:28 PM by sv berviler ]

Solar Thermal Collector on sale


Solar pool systems are very popular because the initial cost is low while the return of your money is less then 3 years. A solar heated swimming pool gives you several additional months of pool usage throughout the year.

If you invest in a solar pool heater or solar spa heater you will be using renewable energy and it will cost virtually nothing to heat your pool or spa once the initial investment in a solar system is complete. Eco and Eco San Diego Solar provides you with the options you need for a closed loop or open loop solar pool heating system or the equipment you need for a solar spa heater for your home.
This new solar technology has only been commercially available for 5 years and is the most modern why of solar pool heating.

A solar pool heating calculation is quite simple.
Start out by measuring your pool size.
wight x Hight x Average Dept = Total volume of pool.
you can use our
Calculate pools size.
tool for that.

In San Diego and Los Angeles we calculate 1 CHP30 system (30 evacuated tubes)
pool heater per 3000 Gallon of water.
Such a solar heater produces the equivalent of 2200Watts energy.

Sample Pricing for mid size pool.
$4800.00 Panels (3 Panels $1600.00/each)
$ 200.00 Pump
$ 400.00 material, piping, valves
$1500.00 Installation
$6900.00 estimated total.

On a low tech installation a timer turn on the pump that rotates the water between the pool and the thermal solar heater during daytime.
On installations with modules we have 2 sensors to compare the pool and the solar collector temperatures. As the temperature raises in the solar panel the pump comes on. As the temperature falls in the panel (night time, rain) the pump is being turned of.

Our specialists are ready to assist you.
Call them anytime at 619 822 2082 
or contact us by email.

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Solar energy is a renewable domestic fuel that’s widely available. Today, solar pool heating systems can be cost competitive with conventional heaters. Their advantage…very low operating costs. The most cost-effective use of solar energy today is to heat swimming pools. Swimming pools require low temperature heat which is where solar collectors are most efficient.
Installing a high efficiency heat pump or solar water pump can be used but need a much longer time to return your solar investment.

See the advantage a solar pool heating system gives you in San Diego.

Determining the Efficiency of Solar Swimming Pool Heating System
You can determine the efficiency of a solar swimming pool heating system based on the collector’s thermal performance rating if available. A solar collector’s thermal performance rating is measured by Btu (British thermal unit) per square foot per day:Btu/(ft2day) Or, the rating can be measured by mega joules (MJ) per square meter per day: MJ/(M2day) It can also be measured by Btu per day, which is simply the rating in Btu/(ft2day) multiplied by the area in ft2. Also used is MJ per day, which is the rating in MJ/(M2day) multiplied by the area in M2.
The higher the number, the greater the solar energy collection efficiency. However, because weather conditions, instrumentation accuracies, and other test condition constraints can vary, the thermal performance of any two collectors should be considered approximately the same if their ratings are within 25 Btu/(ft2day) of each other. High efficiency Eco y Eco solar collectors not only will reduce your annual operating costs, but may also require fewer square feet of collector area to heat the pool.

Purchase, installations & Federal Solar Tax Credits

posted Dec 20, 2013, 5:47 AM by San Diego Solar   [ updated Dec 20, 2013, 5:47 AM ]

Before you think about tax credits. Think about the true actual saving if you purchase one of our heaters.
See on one easy to understand page how much you will pocket.

Solar Energy Systems - Tax credits are available for qualified solar water heating and photo voltaic systems. The credits are available for systems “placed in service” from January 1, 2006 through December 31, 2008. The tax credit is for 30 percent of the cost of the system, up to $2,000. This credit is not limited to the $500 home improvement cap. A tax credit can provide significant savings. It reduces the amount of income tax you have to pay. Unlike a deduction, which reduces the amount of income subject to tax, a tax credit directly reduces the tax itself. You must refer to the final Internal Revenue Service (IRS) rules to determine what qualifies for the tax credit.
Energy Efficiency is for all of us.

How to purchase a Eco y Eco cost efficient solar water heating system online?? Of course you can purchase your complete sun powered warm water system with Eco and Eco online. Yet at the same time we are available in our showrooms in San Diego and for our valued Mexican customers in Tijuana and all of Baja California. You can find the locations on our contact page. Make use of the very compelling economic, environmental, and energy sustainability benefits Eco and Eco Thermosol heating boilers have to offer. We ,as energy professionals with knowledge of a comprehensive range of energy solutions, most likely have an appropriate and cost-effective energy solution for you. You can even buy online. How can you do that? In San Diego
We have at our Eco and Eco branch in San Diego Thermal products in stock. We are ready to receive your order and ship from our warehouse or deliver direct and install the systems. There are just a few necessary steps :

1. select a suiting product on our Water Heater Product page
2. select one of the options below
3. Call or email to place an order of your choice.
Your choice of:

Pick-up for self installation or installation by your professional.(no additional charges apply)
Shipping to your address for self installation or installation by your professional. (shipping charges pending on location, range from US$ 50-250.00)
We deliver direct and one of Eco and Eco’s qualified technicians installs the system.(delivery and installation rates start at US$350.00)
By appointment we can arrange for you to see fully installed working solar systems. These are not show-room expos but solar water heaters in day-to-day operational conditions at client locations that purchased from us. Here you can get first hand information! Ask the users if they are happy with our practical sensible solutions that our experience and consultation provided for their investment in the purchase of an Eco and Eco sun powered H2o heating system.

In Rosarito / Mexico
Eco and Eco now has an office and show room in Baja California Mexico just 5 minutes north of Rosarito. We have Thermosol and Katz and ASW systems products in stock. We are ready to receive your order and ship from our warehouse or deliver direct and install the systems. There are just a few steps necessary:

1. select a suiting product on our Water Heater Product page

2. select one of the options below

3. Call or email to place an order of your choice. 


Your choice of:

Pick-up for self installation or installation by your professional.(no additional charges apply)
Shipping to your address for self installation or installation by your professional. (shipping charges pending on location, range from US$ 50-250.00)
We deliver direct and one of Eco and Eco’s qualified technicians installs the system.(delivery and installation rates start at US$350.00)

By appointment we can arrange for you to see fully installed working solar systems. These are not show-room expos but solar water heaters in day-to-day operational conditions at client locations that purchased from us. Here you can get first hand information! Ask the users if they are happy with our practical sensible solutions that our experience and consultation provided for their investment in the purchase of an Eco and Eco sun powered H2o heating system.

In Rosarito / Mexico
Eco and Eco now has an office and show room in Baja California Mexico just 5 minutes north of Rosarito. We have Thermosol and Katz and ASW systems products in stock. We are ready to receive your order and ship from our warehouse or deliver direct and install the systems. There are just a few steps necessary:

Thermal Tube Solar Water Heater

posted Dec 20, 2013, 5:45 AM by San Diego Solar   [ updated Dec 20, 2013, 5:46 AM ]

Trust the power of the sun by investing in our products to meet your domestic household hot water needs.
Reduce the cost on energy required to heat your water by 90%! In sunny locations, such as Southern California and the Baja, you can completely remove your existing water heater in your home and rely solely on the Thermal tubes heating system.

San Diego solar hot water systems, why bother? My hot water comes out of the faucet.
The same with our Solar Water Heater. The difference is that you will not have a monthly energy bill and protect the environment at the same time.

Your Benefits:
Guaranteed products and services
Long-lifetime
Free Water Heating after installation
environmental friendly
never run out of hot water

Your options:
System with detached tank (any number people)
thermal tube heater
thermal tube heater
thermal heater mounted on the roof it will look like this
Thermal water heater on a tilted sothern california roof
Thermal water heater on a tilted southern california roof
System with attached tank (1-5 people)
residental solar heater
residental solar heater
Quick Tips:
System has no pump system. simply hooked into you pluming
installation by a plumber or yourself. (it is not hard)
Backup Electrical Heater Included
Burn prevention safety valve included
mounts on any roof (flat, tilt, tile) or ground
no operational cost for solar heating

We know that there are other solar companies in San Diego just make sure they have at leased a 60 gallon system that produces enough daily hot water for a family of 4 to shower plus sufficient amounts for other chores such as laundry and dish washing. Start reducing the use of natural gas or electricity with our products through free and limitless solar energy. According to Environment California Energy Reports Solar hot water could save California 1.2 billion therms of natural gas a year, the equivalent of 24 percent of all gas use in homes! Our Thermosol home water heating system is a so called Thermo siphon System and we can install this system in 3 different ways. You can also have the installation done by a plumber of your choice.


As stand alone Thermosiphonic System
The function of the system as with all passive systems is the same: Warm water is rising (convection) and circulates through the collectors, so called evacuated tubes, to the storage tank. This tank has a volume of 230 liters (app. 60 gallons), is well insulated and holds the water hot for up to 2 days. The hot water is directly fed into your water lines, just like your gas or electric hot water heater used to do, when you turn on your warm water faucets.


Eco and Eco Thermal system combined with common boiler.
It’s the same as with the stand alone system with the exception that your boiler (water heater) remains installed and a manual valve is added on. This way you can disable or by-pass your boiler yet still have a back-up if ever needed. We favor this solution. The sun shines most the time in SoCal but we all know there are days with bad weather periods. It’s easy during this time to switch back to the conventional system.




A regulated system - Eco and Eco solutions.
With a system of this kind you have instant hot water available at your tap without having to use a manual valve to utilize a regular water heater on less sunny or warm days. A small flow through heating unit,regulated by a thermostat you set, jumps instantly in to heat your water. If water in the holding tank is sufficiently hot enough , per your settings, when running through the flow through heater - the unit will not turn on or use utility company power. This is also a good addition should you wish to boost the temperature of water that has to travel farther distances to the use point, such as large businesses or residences where the shower or washing machine is farther from the holding tank or source. Additional benefits with this flow through instant heater is that you do not pay for holding the water at a certain temperature in a tank(like traditional water heaters), you only pay for the water to be heated on demand as it flows through on the way to the point of use.

Solar Pool Heaters

posted Dec 20, 2013, 5:44 AM by San Diego Solar   [ updated Dec 20, 2013, 6:33 AM ]

Pool Water Heating with a solar panel in San Diego County is a must.
The sun is abundant to serve our renewable energy needs to heat any size pool.
We offer the the most efficient and cheapest way for your solar pool heater installation.
Join the big money savers with any size pool or jacuzzi in San Diego today.

Our evacuated solar tube systems are much more efficient than the older flat panel and rubber matt’s style pool heaters that we are all so familiar with from the 80’s. Solar from the 80’s is not the same as today’s (and so are the energy and gas prices).

A pool heated with solar
One CHP unit with 30 Evacuated tubes per 2800 Gallons of Pool Water is recommended. Each on of these sets needs only 40sft on a south or west facing flat or slanted surface or roof.
We will install a small pump will be installed to circulate the cold pool water though your solar system during day time to be heated by the sun.

The solar panel is maintenance free and should last over 10 -15 years, depending on the PH of the water.

Join us now, to save on your monthly energy bills.
thermal tube heater
thermal tube heater
Your Benefits:
Guaranteed products and services
Long lifetime
Free Water Heating after installation
environmental friendly
many more months of pool usage

Quick Tips:
installation by a plumber or yourself. (it is not hard)
no operational cost for solar heating
installed on roof (flat, tilt, tile) or ground
cool modern look
Available for any sizes pool
small pump will be installed
light weight
efficient evacuated solar tubes
power coated steel frame
it pays itself in energy bill savings in 3-4 years.

A San Diego solar pool is environmentally friendly
not expensive, $ 2500.00 can get you started
purchase and installation is fast and easy
financing available, partially tax deductible
house-value increases, system is movable

Solar Water Heating FAQ’s

posted Dec 20, 2013, 5:43 AM by San Diego Solar   [ updated Dec 20, 2013, 5:43 AM ]

I am considering to purchase a evacuated tube solar water heater, not the flat panel type. But i have a few questions. :


1. Do these also have a link with the natural gas/electricity to do the heating in case there is no sunlight for several days due to snow, rain etc?

The SWH (short for solar water heater) is installed so in the summer you feed directly from the SWH to your hot water line (shower etc).
Then in the shorter and more rainy time of the year (winter) you turn a valve and the SHW feeds into the water line that goes to your gas or electric water heater.

For best results use gas-tank-less with a thermostat sensor (bosch or similar) …so in this case the you open the shower. The gas burner comes on and if the hot water comes from the system the gas burner turns off and you still have 100% savings in the winter.
If the water in the solar system is not hot enough (rainy week or lots of guests) then the gas heater stays on and heats the luke warm water that came from solar. If u have a gas-tank-less then you leave the setting to this all year round, you can have any number of guests and never have to worry about hot water usage.
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2. How many of these have you installed? Can i talk to happy clients about these?
We ourself have installed over 40 of these. Worldwide the same heaters have been installed millions of times. The thermal tubes and Eco and Eco have been around for a while now.

3. How does the water heat at night when there is no sun?
It does not. The water is heated during daylight, not just sunlight!
At night the water sits in the water holding tank (attached or separate) and can be used at any time.
Cold water comes into the lower part of the holding tank and stays there, the next day the water will be heated again.
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4. How does the water pump work? Are they electricity powered?

You don’t need a pump for systems that have the tank attached. For systems with a separate water tank you need a very small pump with a timer. It uses electricity, but very little and some folks like this to be done by voltaic solar cell.
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5. What is the standard configuration? Does the tank sit on the ground floor/basement?

Simplest is a TH250, it needs no pump. And the whole system can sit anywhere, roof, ground.
It works best if its faces south. But southwest or even west facing installations perform very good.
Before installing consider
* short distance to hot water line/ kitchen or shower.
* that no tree or neighbors house blocks the sun.
* that its not in the way and you later hate to see the thing in your path.
Generally ground installations are fine too. Many of my friends always want to see how it work (again and again) and they want to check how hot the water is when they visit me (every time).
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6. How long does it generally take to install one system?
We install a TH240 in a few hours.. For first timers with with the self installation CD it will take you about a day.
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7. The price, is it list or net to install one system at my own place? What does it include?

End Prices are shown on our SWH catalog.
It includes the SWH with thermal tubes, frame, attached tank

We highly suggest that you install the following additions.

* anti scalding valve, in case the water gets very hot
* pressure reducing valve, in case your water pressure varies and is above 50psi
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What will be its capacity (1-2 people 3-4 people, 5- 6 people……?)

A TH250 is good for 3-4 people for most of the year. In the summer it can sustain about 5-6 people.
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What is a drain closed loop system?
Closed-loop system that circulates antifreeze through the solar hot water collectors and uses a heat exchanger to transfer this collected heat to household water. When the sun shines on the PV modules, the DC pump that circulates a propylene glycol solution through the pipes and collectors runs in rough proportion to how much energy the sun can provide an elegant, grid-free solution. But dealing with the maintenance requirements of periodically checking the pH (acidity and alkalinity scale) of the propylene glycol antifreeze and recharging the system held little appeal for me.

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What is a drain back system?
A closed-loop drainback system that uses demineralization or distilled water as the heat-transfer fluid. In these systems, a pump moves water through the collectors and circulates it through a heat exchanger. When the pump is off, the water drains from the collectors and outdoor piping to a storage tank, assuring freeze protection.
Drainback systems are effective and reliable—some systems can operate twenty years or more without needing service. Their only downside is that larger, higher power AC pumps;requiring more energy—usually have to be used. This is especially true if you’re pumping water two stories or more, since the drainback pump has to lift the water to the height of the solar collectors.
In the pressurized loop of a glycol system, all the pump has to do is overcome the friction head of the piping itself.
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Are your systems compatible to the freezing temperatures we have here?
Since there is no water in the tubes and the tank has a back-up electric heater just in case. but it will never freeze inside. the to/from water lines are a the easiest to freeze that is why we suggest is that you install a back flow pump.
meaning at any time there is small amounts of hot/warm water coming from the system, run through the line and then feeds back into the system. easy to do.
watersaversolutions or home depot offer such pumps for around $200.00.
This pump must only turn on if you don’t take hot water from the tank for longer periods. especially in cold nights.
Very good professional insulation must be installed around the tubes. That is most important and will do the job in most cases.

What are the weight/dimensions so that we can work out the freight charges? 
The total volume is 3 sqm (37ft3
the weight is 130 kg (286lbs)
We suggest forwardair shipping from terminal to terminal.

If you have any more questions feel free to call me at 1 619 822 2082 or contact us.

Solar Water Savings

posted Dec 20, 2013, 5:42 AM by San Diego Solar   [ updated Dec 20, 2013, 5:42 AM ]

Solar Savings are huge. 
How much do you spend on gas per month now?
Savings based on steady increase and purchase of natural gas.

saving money with solar water heating
saving money with solar water heating

This chart is for a normal home which ends up spending about 20-30.00 per month in gas.
Pool and commercial water heater applications end up costing you much more per month instead of the savings with solar.
One time purchase will save you for 10-20 years to come.
If you rent your home, you can still install the solar system.
They are easily moved if needed.

Solar Hot Water Systems - Renewable Energy 4 you! You may remember your first time to witness the power of the sun when harnessed by human idea - as a child holding a magnifying glass to start a scrap of paper on fire! The power of the sun has always been used by mankind, people hanging clothes outside to dry and be bleached white by the sun. Native Americans used the sun to dry and preserve their food supplies. The sun’s heat has been used for decades to heat water for homes and businesses. At the turn of the 20th century, solar heated water systems were common in Southern California. Some countries have made their use mandatory. For example, all homes in Israel have solar hot water systems. More than one-half million solar hot water systems have been installed in the United States, mostly on single-family homes. The majority of these systems are used to heat swimming pools.

Typically, a homeowner relying on electricity to heat water could save up to $500 in the first year of operation by installing a solar water heating system. The savings over time increases due to increasing electricity rates. The average solar heating system pays for itself in four years.

Solar Water Heater Incentives
Incentives have been one of the hottest topics in the solar business since its beginning. The main purpose of the incentives is to make the solar water heater investment more appealing to the final user.
The savings that can be obtained using a solar water heater system are pretty obvious but still people are demotivated once they know they have to pay upfront some thousand dollars in order to have a system installed in their house or business.
Solar Water Heating (SWH) systems can help protect consumers against future gas and electricity shortages as well as price increases. They help preserve the environment by eliminating carbon dioxide emissions and reducing harmful pollutants.

This year the City of San Diego is offering a plan of incentives that will benefit residential, commercial and industrial customers in the area served by SDG&E.
The SWH Pilot Program has an overall incentive budget of $1,500,000, of which $900,000 will be allocated for prescriptive systems (residential and small commercial systems) and $600,000 for area method systems (large commercial and innovative systems).
Any retail electric customer of SDG&E is eligible to install a solar water heating project and receive incentives from the SWH Pilot Program. SWH systems must assist existing water heaters. New construction is not eligible for the program due to evaluation requirements for energy usage history.
For residential systems, the maximum incentive is $1500 per dwelling and varies according to the system installed and other installation details. For commercial and industrial the incentive is function of the size of the system and can go up to 75000$.
For more information about this program, consult the SWH Pilot Program Handbook available from the CCSE’s SWH Pilot Program web page.

Stand alone Solar Water Heater

posted Dec 20, 2013, 5:39 AM by San Diego Solar   [ updated Dec 20, 2013, 5:58 AM ]

As stand alone thermosiphon system.
Is what most people would call our HP150, HP195 and HP 240.
But in fact it is a heat pipe system. Which contains a phase change fluid (acetone) which transfers the heat collected in the thermal tube up to the water holding tank by simple evaporation and condensation processes.
So at no time any water enters the collector, it only stays in the tank and can therefore not cool off as much during cold or night times. Making the heat-pipe-system much more efficient saving you even more money on your monthly energy bill.

The function of the system as with all passive systems is the same: Warm water is rising (convection) and circulates through the collectors, so called evacuated tubes, to the storage tank.

This tank has a volume of 240 liters (app. 60 gallons), is well insulated and should be sized to hold the water needed in your household for up to 2 days. The hot water is directly fed into your water lines, just like your gas or electric hot water heater used to do, when you turn on your warm water faucets. We can install a tank less gas water heater in line after the solar system for some very long cloudy weather periods. This gas heater will then only work as an addition to the solar heater.

Some of our clients do not like the looks of these heaters, so we we suggest to mount it on flat roofs or even ground installations in parts of your home where nobody can see the solar-tank-system. But at any time a pitched or tile roof installation in San Diego is possible.

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