Home tools Buyer's Guides from tech enthusiast who loves technology and clever solutions for better living.
Best solar attic fan 2018 – [Buyer’s Guide]Last Updated March 1, 2020
Best solar attic fan of 2018
The rating is based on multiple factors: The 3 metrics ‐ Design, Materials, Performance, and other indicators such as: Popularity, Opinions, Brand, Reputation and more. I am going to specify each good-to-buy feature as much as possible for your references.
You must have heard that the best solar attic fan should allow you to save money, right? Sure, but that’s not the only reason you should consider getting one. Like choosing clothes or cosmetics, choosing solar attic fan should be based on your purpose, favorite style, and financial condition.
Test Results and Ratings
Why did this solar attic fan win the first place?
The product is very strong. Its material is stable and doesn’t crack. I also liked the delivery service that was fast and quick to react. It was delivered on the third day. I really enjoy the design. It is compact, comfortable and reliable. And it looks amazing! I am very happy with the purchase. It is definitely worth its money. The product is top-notch!
Why did this solar attic fan come in second place?
I recommend you to consider buying this model, it definitely worth its money. The material is pretty strong and easy to wash if needed. The design quality is top notch and the color is nice. I really liked it. It is amazing in every aspect. It did even exceed my expectations for a bit, considering the affordable price.
Why did this solar attic fan take third place?
It doesn’t squeaks nor bents. Looks great in my apartment. A very convenient model. It is affordable and made of high-quality materials. It is inconvenient to use due to the size. I am going to get something different next time. I liked the design. We’ve been using it for 2 months and it still looks like brand new.
solar attic fan Buyer’s Guide
But here is the solution
When there is no sunlight available to power the fan and the Solar Controller has the optional house power connection enabled, the Solar Controller will cycle house electricity in order to power the fan. This will allow your attic temperature to continue to drop after sunset and help remove the hot, stagnant air that can build up on those warm summer evenings.
The Natural Light brand solar attic fans
A single 36-watt unit can fully vent up to 2,62square feet, operating at up to 1,62cfms. Natural Light has developed a unique adjustable mounting bracket that allows the solar panel to be positioned in the angle where it will collect the most sunlight to provide optimum fan performance. The mounting bracket also allows air to continually circulate around the solar panel keeping it cool for a consistent output. This Solar Attic Fan mounts on 3/1to 12/1pitch roofs. (this unit not for flat roofs or side wall mounting). Natural Light also provides a solar panel in 12, 2and 60 watts to accommodate the correct amount of ventilation needed.
The Natural Light Solar Attic Fan utilizes a German engineered direct current motor. The motor is precision balanced to achieve low motor vibration and low motor noise. Additionally, the motor sits in an isolation bracket to further ensure a smooth, quiet operation. Each motor undergoes individual motor winding testing to ensure consistent motor performance.
Whole-house fans are used to cool a house at night, when the heat of the day has passed and the outdoor temperature has dropped enough to feel comfortable. When should you turn on a whole-house fan? The answer depends on your climate and your comfort range. The outdoor temperature should certainly be below 80°F — or, better yet, below 70°F.
The main advantage of using a whole-house fan instead of an air conditioner is to save energy. A whole-house fan usually draws between 200 and 700 watts — about 10% to 15% of the power drawn by a central air conditioner (2,000 to 5,000 watts). If evenings are cool enough, it’s fairly easy to lower the temperature of your home and your furniture with a whole-house fan — sometimes in less than an hour.
Cooling load that results when moisture in the air changes from a vapor to a liquid (condensation). Latent load puts additional demand on cooling systems in hot-humid climates. due to exterior humidity entering the house at night.
The fan pulls air from the hallway and blows it into the attic. Since whole-house fans are relatively powerful — they are usually rated between 2,000 cfm and 6,000 cfm — they quickly exhaust the hot indoor air, allowing cooler outdoor air to enter through the downstairs windows. Once the house has cooled off, the fan can be turned off and the windows closed. Most people who have whole-house fans keep their windows closed from early morning until evening, so that the cool air inside the house doesn’t escape.
You need enough attic vents to let the air escape
Since a whole-house fan blows all of the hot air from the home into the attic, the fan won’t work effectively unless the attic has large openings to exhaust the hot air. Most old-fashioned whole-house fans require more attic venting than the minimum amount required by the building code — anything from a little more to about twice as much, depending on the size of the fan.
Here’s the rule of thumb: you need one square foot of net free vent area for every 750 cfm of fan capacity. The vent area can be made up of a combination of soffit vents, ridge vents, and gable vents. If the vent has insect screening, remember to make the opening 50% larger than the rule of thumb dictates. It’s better to have too much vent area than not enough.
Manufacturers of ridge vents and soffit vents provide information on the net free area of ventilation per linear foot of their products; for example, the Air Vent website lists different ridge vent products that provide between and 1square inches of net free area per linear foot of product.
ACH stands for Air Changes per Hour. This is a metric of house air tightness. ACH is often expressed as ACH50, which is the air changes per hour when the house is depressurized to -50 pascals during a blower door test. The term ACHn or NACH refers to “natural” air changes per hour, meaning the rate of air leakage without blower door pressurization or depressurization. While many in the building science community detest this term and its use (because there is no such thing as “normal” or “natural” air leakage; that changes all the time with weather and other conditions), ACHn or NACH is used by many in the residential HVAC industry for their system sizing calculations.). If you’re aiming for 1ach, that means you need to divide your home’s volume by to obtain the cfm rating of your fan. If your ceiling height is between and feet, just multiply the floor area of your house by to obtain the cfm rating of your fan.
Powered attic ventilators
Now that we’re done talking about whole-house fans — the “good” kind of attic fan — it’s time to address powered attic ventilators — the “bad” kind of attic fan.
Powered attic ventilators are usually mounted on a sloped roof or the gable wall of an attic. Most powered attic ventilators are controlled by a thermostat so that they turn on when the attic gets hot.
The intent of a powered attic ventilator is to exhaust hot air from the attic. The installers of powered attic ventilators hope that the exhausted air will be replaced by outdoor air. They also hope that the outdoor air will be cooler than the exhausted air, and that the effect of operating the fan will be to lower the attic temperature.
The idea is to save energy by reducing the run time of your air conditioner. Installers evidently hope that a powered attic ventilator will save more energy that the electricity required to run the fan.
Vent Fan Size
Next, multiply the square feet of attic space by 0.to get the minimum number of cubic feet of air per minute that the fan should be rated to move.
Add an additional 20% (CFM x 1.20) if you have a steep roof, and 15% (CFM x 1.15) for a dark roof. Attic vent fans are commonly rated from 800 to 1,600 CFM, making one fans suitable for attics of up to around 2,200 square feet.
Vent Fan Location
Locate roof mounted fans on the back of the roof below the ridge (but not so high as to be visible from the front of the house) in the middle of the main part of the attic. Install gable mounted fans on the gable vent at end of the house faces away from the prevailing winds.
Intake Air Vents
If you prefer the answer in square inches rather than square feet, multiply the answer by 14and round to the nearest inch (2.3x 14= 33sq. in. vent area).
Broan 35Gable Mount Ventilator
This ventilator uses a 3.4A motor which can drive this 14” diameter blade fan. The blade is made of steel. It is able to draw out and in up to 1,140 cubic feet of air every minute and it is effective to cool a wide range of 1600 square feet. A built-in thermostat can cycle on and off automatically when the temperature in the attic reaches within degrees of the temperature you set. Once you have installed it, it is effective to reduce the temperature and this can make your air conditioners not need to work so hard. A 1-year limited warranty is also offered.
Cool Attic CX1500UPS Power Gable Ventilator Fan
This Ventilator fan can be effecting at a range of 1,850 square feet. If your attic is less than 1,850 square feet, this fan is suitable. Every minute, it can move about 1,300 cubic feet of air, with its 14” diameter fan. It installs behind the existing louvers in your attic or behind gable shutters. This is not powered by solar energy but electricity. It needs a 20v electric connection to power it. It also offers an adjustable, automatic thermostat, which allows you to alter the desired temperature to turn the fan on automatically whenever the temperature arises from 90 to 1degrees Fahrenheit. Once the temperature is higher than the set temperature, the fan will continuous to work. Plus, it comes with a 2-year limited warranty from its manufacturer.
You choose solar attic fan, which means you choose the green energy, because solar attic fans are powered by the sun and they are energy-efficient. You can reduce your carbon foot print and save some money on your energy bill. And this also means the installation is much easier.
The RM 2400 Fan generates maximum power to battle built-up heat and moisture in your attic. It’s the ideal solar-powered ventilation solution for large attic spaces and extreme climates.
The RM 1200 Fan is designed to keep your attic cool and dry by driving out built-up heat and moisture. It’s the perfect solution for small attic spaces and moderate to mild climates.
The IM 1500 Fan converts your passive vents into an active, solar-powered venting system. Mounted inside your attic, it drives out built-up heat and moisture through your existing vents. Perfect for gable, dormer and powered vents as well as whirlybirds.
RM 1500 Add-on Panel
Scribe outline of vent’s flashing on roof using homemade dowel compass.
Cut shingles along circular outline with a utility knife.
Pull nails and remove shingles from within the circle.
Use compass to scribe hole for vent onto roof sheathing.
Rand Solar Powered Attic Fan
Rand Solar Powered Attic Fan is extremely useful for reducing your cooling cost during summers. It can also reduce water vapor and moisture in your attic because it offers needed ventilation. This solar attic fan is perfect for houses with a gable vent on the vertical peak wall. You will also get extra ventilation without making holes in your root. It has an adjustable angle solar, which is helpful for adjusting the panel very easily towards the sun. You can also mount it simply in your attic.
Amtrak Solar Attic Fan
Power from a solar panel is inevitable for working a solar fan. Therefore, a high voltage is essential for the smooth running of a solar fan. Amtrak Solar Attic Fan is equipped with 3Watt solar panel, thus it delivers high efficiency. You can also install this fan in the gable vent or somewhere in the attic. It has a 1Volt DC fan and high-efficiency fan blades. Thus, the Amtrak Solar Attic Fan provides you the best performance. It is perfect for keeping your house clean and circulating fresh air all day. You can also install this fan without making holes in the roof.
Eco-Worthy Solar Powered Attic Fan
The Eco-Worthy Solar Powered Attic Fan comes with high-efficiency brushless motor, which provides you a quiet environment. It is effective for cooling your roof and reducing the load on your AC system. Thus, you can reduce the cooling cost considerably if you use this attic fan. Even if the voltage is very low, the fan works automatically. So, you will also get great ventilation even during the cloudy days. Equipped with 30 watts poly foldable solar panel, it allows you to adjust the optimal angle for getting the best efficiency.
Broan 345SOWW is a 28-Watt, surface mount, solar powered, attic ventilator. It offers you a reliable performance throughout the year. It is ideal for preventing ice dams and moisture problems in the winter. It is highly beneficial for making a huge difference in temperature. The ventilation unit is small and simple, but it can provide you a maximum CFM of 537.
Durabuild 527S-DUB-106-BLK is ranked as the best solar powered attic fan on this list because of many reasons. It can exhaust hot air from the attic because of its highly efficient solar attic fan. Thus, you can reduce the usage of energy dramatically. It is also effective for reducing the potential mold buildup and increasing the roof life. This attic fan is also efficient in exhausting moist air. The solar panel of Durabuild 527S-DUB-106-BLK comes with 20 years warranty.
Purpose and Location
An attic fan is installed in the attic and blows hot air out through a roof-level or gable vent. Outside air is pulled through roof and vents, keeping the attic cooler. The theory behind attic fans is that they help prevent the transfer of heat from a hot attic to the living space below. The heat in an attic on a hot day can be 20 degrees Fahrenheit or higher than the outside temperature, and using an attic fan can reduce the temperature in the attic by at least 50 degrees and in the highest floor of the home by as much as degrees. Also, lowering the attic’s temperature can extend the life of major housing components like mechanical devices, wiring, roofing, and framing.
Even though it is also in the attic, a whole house fan is installed in the ceiling of the home, usually in the ceiling of a central hallway. When running, it pulls warm air from the home’s living spaces into the attic. This draws in cooler air through the home’s open windows and doors. These fans can provide a home with 30 to 60 air changes per hour depending on the home’s floor plan, climate, and fan size. This results in turning over enough air to cool a home in approximately one hour. Once the sun rises and outdoor temperatures increase, the fan is shut off and the windows are closed to preserve the cooler air until the evening.
Attic fans are easier to install than whole house fans because of their location and size. Installing a smaller fan on the roofline or in the gable is easier than putting a much larger fan in the ceiling of the home. Even though one is less difficult, both projects should only be tackled by professionals. Both require electricians to correctly wire the new fans and carpenters to cut the hole for the fan. An attic fan installed on the roof may need a roofer to ensure that it is well sealed in relation to the . A whole house fan installation also requires the skills of a sheetrock specialist and finisher to maintain the appearance of the home’s interior. Also, only a professional should assess the ventilation needs of each fan and correctly install additional vents, sometimes two to four times the amount of vent space required by building codes.
The average attic fan draws less than 300 watts, making it seem like an energy-efficient home improvement, but some professionals in the field claim that attic fans are not a cost-saving investment. Many users, however, claim an attic fan is a money saver, but they do not offer documented proof of the savings. The debate has caught the attention of some state legislatures. As a matter of fact, in its 200Energy Conservation Code, the state of Georgia banned the use of electric attic fans because they determined that they were not energy efficient. Doubters of attic fan efficiency claim that even solar-powered attic fans, which cost more initially but run “off the grid,” can take 20 years to provide a return on the investment.
When the conditions are right, whole house fans are an energy-efficient alternative to central air conditioning systems. A whole house fan will draw 200 to 700 watts, about percent of a central unit, which will draw 2,000 to 5,000 watts. This means running the whole house fan will cost approximately 90 percent less than running a central air conditioning unit for the same amount of time.
One energy concern with whole house fans is heat loss in the winter. To maintain energy efficiency when it is not in use, the outlet for the whole house fan should be sealed to prevent heat from escaping into the attic. Some fans come with insulated closures that make this easier than having to physically cover the fan’s outlet with an insulated cover.
A home with an attic fan must be completely sealed between the living area and attic. It also must have sufficient and roof ventilation for the intake of air into the attic. Otherwise, the fan will actually pull air-conditioned air from the living area through cracks in the ceiling, forcing the home’s air conditioner to work harder.
Another concern is that with inadequate ventilation, the attic fan can create backdrafting conditions with combustion-powered appliances, such as gas stoves and gas water heaters. Backdrafts can lead to the pull of deadly carbon monoxide into the home.
Because it brings the outside air in, a whole house fan is a poor choice for allergy sufferers, especially in dust or pollen-filled areas.
Due to the largely negative views on attic fans in the past several years, having one will not increase a home’s resale value. At the same time, having an attic fan should not hurt the home’s value or cause it to be more difficult to sell. The new owners could simply not use the fan if they do not believe in its value.
On the other hand, a whole house fan can improve the resale value of a home in an area with the right climate. Because government energy experts say that a whole house fan can meet most of the cooling needs in these specific areas, potential buyers will likely see such a fan as a green alternative to central air conditioning.
Clearly, the financial benefits for solar are significant, but they increase when one considers the ancillary advantages. For example, securing fixed energy costs protect home and business owners against rising energy costs. In addition, flexible financing options allow you to use the money you save on your power bill to fund the purchase of your solar panel system. In most cases, there is no money down and no out-of-pocket expenses.
Site Tech Connect offers a solid review of the different inverter types.
The micro inverter system is a strong step-up from the standard string inverter system and performs at 65%-80% efficiency at peak performance. Micro inverters utilize an individual inverter for each panel which is then routed into your main power box. At the trunk connection of each power box, there is a 2% drop in efficiency.
SolarEdge String Inverter with Power Optimizers
The SolarEdge Power Optimizer system gives you the best advantages of string inverters and micro inverters while minimizing the previously mentioned disadvantages, giving the SolarEdge Power Optimizer an efficiency capacity of over 85%. Consequently, this is the system I recommend over all the rest.
SolarEdge extended warranty. The Power Optimizers keep the voltage fixed at their maximum levels which are important in an environment like Florida because of the cloud coverage. The equation that produces the energy for your home uses is Volts X Amps = Watts, which means the higher the voltage is fixed, the more kWh your system will produce, or the more money your system will save you on your power bill. Power Optimizers perform at “maximum power point tracking” (MPPT) at the module level which impacts the efficiency in a positive way as it relates to Volts x Amps = Watts.
Similar to micro inverters, power optimizers are fixed to each individual panel, thereby allowing for panel level monitoring. However, they do not convert DC to AC electricity on the spot; rather, they condition the DC electricity and send it to the main inverter.
There are many competitive brands when it comes to solar. The industry standard warranty for solar panels is a 10-year manufacturer warranty and a 25-year performance guarantee. Most brands will offer an 80% performance guarantee for 2years.
The manufacturer warranty protects against any product defects that may occur during the warranty period, while the performance guarantee protects against a panel degrading faster than the manufacturer anticipates. As mentioned earlier, monocrystalline panels will degrade by.36% a year. So if your panel degrades faster than the performance guarantee then the manufacturer would replace that panel. The 80% performance guarantee over 2years thus means your panel can degrade up to.80% per year and be covered under the performance guarantee.
The Real Life Span of Solar Panels
I will preface this again there are honest and reliable solar contractors in the market, but there are just as many shady contractors out there. Keep in mind that solar is a competitive business, and contractors are just trying to get an advantage to gain your business. Just because you cannot see the future consequences of a poor decision or feel them immediately does not mean they do not exist and will ultimately hurt you.
When you are buying a solar panel system, the being informed on the technology doesn’t always get you the best deal. Knowing and understanding the sales tactics employed in your solar presentation, combined with valuable consumer knowledge, will get you the best energy-saving system you can buy.
The System Size Calculation
The system size calculation fudge is the most common trick or deceptive practice that solar installers, especially in Florida, will pull on homeowners. In short, they will knowingly miscalculate the size of the solar power system you require. Understanding how to calculate your solar panel system needs will help you know who to trust.
Solar Math For Sizing The Right System, you will discover how to make these crucial calculations.
To figure out the size of the solar panel system you need to install, you must first find out the annual kWh that you need to produce. From the example above, 1,5kWh would 18,120 kWh for the year. That just happens to be the amount of production you can anticipate producing with a 10KW system. So, a 10KW system will produce 18,120 kWh a year or 1,5kWh per month.
Why would a solar sales rep do this? They use this method to sell a smaller system at a better profit margin while having the cheapest price. Like most of these examples, the consumer simply doesn’t get the best deal and leaves thousands of dollars on the table. Learning how to properly size your solar panel system can help.
The Combination Approach
There are many variables that a homeowner must consider when purchasing a rooftop solar panel system for their home. It becomes challenging when a solar installation contractor uses multiple deceptive practices within one approach. For example, they might recommend a straight string inverter system while underestimating the size of the system you need, all the while only showing you the second-year pricing. You must be astute and on the lookout for these “tricks of the trade”.
I want to stress that there are reputable and honest solar contractors doing business in the industry, but separating the honest ones from all of the rest depends on your educating yourself on as many of these issues as possible so you will be empowered to get the system that performs best and meets your long-term needs.
Solar Panel Production Guarantee
Keep in mind you will rarely receive money back because a quality solar contractor who is selling a quality solar panel system can mathematically calculate an accurate estimate for the production of your solar power system. The purpose of the guarantee is to weed out those contractors who will stoop to deceptive sales practices, thereby giving you the peace of mind that you are getting what you pay for.
Solar Consulting Service is a solar expert hired to analyze the solar quotes that you receive from solar power companies. After obtaining your three solar quotes, send them to your independent solar consultant to review. They will eliminate any bad bids or adjust bids to fit your need. They will then recommend the bid you should choose to install your solar panel system.
The biggest benefit of an independent solar consultant is that they know exactly what to look for when looking over solar bids. They will be able to spot inconsistencies that will cost you thousands of dollars in the long run and gives you the peace of mind of knowing you are getting exactly what you are paid for.
I would equate this to hiring an attorney to review legal documents that represent your interests and protects you in the long run.
Forward houten carport met zonnepanelen. we hebben een auto die best wel duur is, dus een afdakje is altijd handig! als je dan nog zonnepanelen er op hebt dan is dat helemaal goed. mijn nieuwe huis is een alleen staand huis, dus er kan genoeg zon op komen.
Florida Solar Attic Fans
Protect your home and save money with a Solar Attic Fan. Solar Attic Fans reduce heat build-up in your attic and can minimize the load on your HVAC system. Available for all roof types, solar attic fans install easily with no electrical wiring or structural changes and blend seamlessly into your roof line.
Attic Venting Key Concepts
Attic ventilation is an important aspect of maintaining the structure of your home as well as saving energy. Improper attic venting can lead to moisture buildup that can cause mold growth and also cause wood rot. The key to proper attic ventilation is to create continuous air circulation throughout the attic space while preventing moisture from entering. In an ideal venting system, air should enter the attic from the eaves or soffits and escape outside at the roofs ridge.
First of all thanks for reading my article to the end! I hope you find my reviews listed here useful and that it allows you to make a proper comparison of what is best to fit your needs and budget. Don’t be afraid to try more than one product if your first pick doesn’t do the trick.
Most important, have fun and choose your solar attic fan wisely! Good luck!
So, TOP3 of solar attic fan
- №1 — Solar attic fan 30 Watt
- №2 — Attic Fan Solar Powered Exhaust Roof Mounted 450 CFM Vent Ventilator Green Air
- №3 — Solar Attic Fan 36-watt – Black – with 25-year Warranty – Florida Rated by Natural Light