Apr 01, 2025 - 10:38 AM
View all Energy, Water & Air Questions & Answers
We’ve provided several answers to questions related to Energy, Water & Air , see some other helpful Q&A related to this product.
Question: I have a broken dome and the diameter for the dome to tube fit is 12 inches. Where can I find replacement?
Answer: Sorry, our domes only fit 10" or 13" diameters.
Question: this 13 inch diameter dome fit over my existing flashing with a 15-1/2 inch outside diameter?
Answer: No. This product is only suitable for Natural Light Tubular Skylights in 10, 13, 18 or 21 inch inside diameters.
Question: Can it operate at night ? And what is noise dB rating
Answer: No, it's solar operated.Sorry, we don't have that information. I have several roof mounted units and you can't hear them until you get within inches of the fan. They are extremely quiet.
Question: Is this flat ?
Answer: No, the diffusers are rounded.
Question: What is the replacement cost of the Drain Replacement kit?
Answer: Please see: https://www.greenbuildingsupply.com/Z...
Question: Can you specify the outside dimensions of the curb that's required?
Answer: 20" outside to outside.
Question: I have a 13" opening in the ceiling. Which diffuser size am I going to need to cover that, 13" or 18"?
Answer: The tubular skylights come in 13" diameter, so that is what should work.
Question: Hi. Do this cartridge fit American standard waterless urinals?
Answer: Yes.
Question: Hi, I've got two questions: 1. You mention this can be used with dimmers (Lutron LGCL-153CL 600W, Lutron MAW-600H-WH 600W, etc...). Do you sell the dimmers? 2. Does this come with everything, or do the LED lights come as separate bulbs? (and if so, do you sell replacement bulbs)?
Answer: Sorry, they don't come with dimmers. There are no separate bulbs in these. It is one integrated unit. When the light fails in 25-50 years, you would replace the entire unit.
Question: What does it NOT filter? Sounds like chloramine, fluoride, nitrates/trites. What else?
Answer: Those are the main chemicals it won't filter.
Question: Does this order come with 2 cartridges?
Answer: Yes, this is a 2 pack of drain insert replacements.
Question: how long is the included wiring between the panel and the gable fan?
Answer: 15' long
Question: Could this be used in an unheated garage?
Answer: ZeroFlush urinals will work in unheated garages provided the temps don't get below 32 F. There is a J trap which holds the urine which could freeze in that confined space and cause issues.
Question: What do you mean by curb mounted? Do I need to create a curb on my flat roof or does it come with a kit?
Answer: Curb mounting is for uneven roofing like concrete, clay tile, and metal. That's because the unit must sit flat on the roof and without a curb, it is not possible. A curb is simply built with 2x4's in the form of a box and the attic fan is placed on top.
Question: Does this water filter contain any plastic parts?
Answer: Their Standard Faucet is a BPA free plastic. The entire AquaRain Natural Gravity Water Filter system is made in the USA. Their stainless steel is made in Wisconsin, they make the ceramic filters and a company in Ohio makes the faucet. The o-rings are silicon and rubber. These o-rings (washers) are made of NSF/ANSI 61 certified nitrile rubber (N-7039). NSF 61 is the standard for approved contact with drinking water.
Question: Does this filter contain any plastic parts?
Answer: Their standard faucet is a BPA free plastic. The entire AquaRain Natural Gravity Water Filter system is made in the USA. Their stainless steel is made in Wisconsin, they make the ceramic filters and a company in Ohio makes the faucet. The o-rings are silicon and rubber. These o-rings (washers) are made of NSF/ANSI 61 certified nitrile rubber (N-7039). NSF 61 is the standard for approved contact with drinking water. This information is all directly from AquaRain.
Question: Does this filter PFAS chemicals (GenX, PFHxS, PFBA, PFOS, PFPA, PFHxA, PFHPA, PFOA, etc)?
Answer: Yes, the AquaRain Natural Gravity water filter does indeed remove PFAS. The best option for removal of PFAS is Granulated Activated Carbon. Long used to remove a variety of contaminants from water, granular activated carbon is typically the best PFAS treatment option. As water flows through packed beds of the material, PFAS molecules adsorb onto the surface of the porous carbon particles. The AquaRain incorporates the highest grade silver infused nut-shell carbon available for chemical reduction. The inherent chemical reduction capabilities of carbon are well established and infer performance by their use. The AquaRain maximizes the capability of the chemical reduction because of an extended mean contact time of 11 minutes for water processed through the ceramic cartridge.
Question: I have a model unit 101 purchased in 1999 with only one ceramic filter, but it was stored and never used. I have two ceramic filters (one spare) which were just sitting inside the unit but not yet attached I read that the Aqua Rain filters out fluoride, but after 100 times used, something has to be added to continue filtering out the fluoride? I need clarification.
Answer: The Aqua Rain 303 units and filters do not filter out fluoride. We've never sold the 101 model, so can't speak to that one specifically. If you'd like to reach out to AquaRain directly to ask after their discontinued models, they can be reached via https://aquarain-com.3dcartstores.com...
Question: Natural light switch snap temperature switch: can you select your own temperature for turn on and off???
Answer: No, it is built into the switch. Also, these fans are extremely quiet. You can hardly hear them with your ears right next to them.
Question: Are these compatible with all models? The ones on the AquaRain website say they are for all models.
Answer: AquaRain replacement filter elements will fit in today's current model and any AquaRain system they have sold in the past.
Question: Do these filters fit the Big Berkey housing & dispenser?
Answer: It appears these filters are proprietary to each manufacturer. After doing some research it looks like the Big Berkey is very similar but uses a slightly different black filter. These filters here can only be used with AquaRain.
Question: Will this diffuser fit the old ODL tubular skylight?
Answer: These are made for Natural Light Tubular Skylights only. I don't know if they would work for any other brand.
Question: I am on a municipal water system, and I would like to be able to filter and drink the water, however, I am wondering how long this filter can possibly last removing the typical chlorine out of the water? It seems like the strong points of the filter are removing microbes, contaminants, etc., but when removing chemicals on a daily/weekly basis, what would prevent this filter from not filling up like a typical carbon based filter? If i can't last long doing the aforementioned, then it would not be any more cost effective using it for that purpose. Please advise Thank you.
Answer: Yes, the ceramic filters remove chlorine compounds and can be cleaned up to 100 times and will produce thousands of gallons.
Question: Do they have a smaller version of this system or is there just one size?
Answer: There is just one size of the AquaRain water filter. This unit has a 3 gallon capacity. It sits on the counter; just add tap water, pond water, rain water, etc.
Question: I was wondering if it removes Nitrit? We have a spring on the property ..tests show spring has high nitrit .
Answer: We reached out to AquaRain with your question. They had the following reply: Do you mean Nitrites? The short answer is no, AquaRain will not remove Nitrites. Nitrates and Nitrites are a very finely dispersed EPA listed contaminant that is difficult to remove if actually present. Unfortunately, no filter using Granulated Activated Carbon alone will remove nitrates. If you truly have a nitrate problem* and want to deal with it effectively, only Distillation or Reverse Osmosis will consistently work. Distillation requires constant maintenance, so we do not recommend it. While not energy-free, Reverse Osmosis is a very effective low-maintenance solution that is not too costly. The main drawback is the under-sink installation which may be challenging... *Generally speaking, if you do not have a particular identified water contaminant problem, be cautious chasing phantom problems. Most waters are safe with conventional treatments. Specialized methods are available to address specific water issues if needed, but these will cost more.
Question: Can you used softened water in this? Will it take the salt out?
Answer: The AquaRain can be used to purify any water. However, there is typically no salt in softened water, even though salt is used to backwash the system.
Question: Can this light be removed if we want to replace it with a ceiling fan?
Answer: This replaces/fits into a standard can light fixture, if you want to replace it with a ceiling fan, you would need to remove the original standard can light fixture in its entirety.
Question: Do they come in 3k and 4k or color selectable?
Answer: No, sorry. These only come in 2700K which is a warm/soft white similar to most incandescent lamps. 3000 and 4000 are much whiter.
Question: Can this urinal be used with a septic system?
Answer: Yes.
Question: Will the single or double socket reduce the amount of natural sunlight during the day? Which is less visible, the fluorescent or the double socket. What is the recommended bulb wattage for both the single and double socket?
Answer: According to Natural LIght that makes these products, they don't recommend the double socket for 10" or 13" kits. Single socket is best as they will only slightly reduce the light flow. They also recommend wattage of 60 and no higher.
Question: how often does the filter need to be changed?
Answer: That depends upon how much water you drink, how often and how dirty is your water. Obviously, if there are 4 people in your family drinking lots of water each day, the filter will require changing more frequently. The ceramic filters will purify water up to 200 times before replacement. The unit holds 3 gallons. So apx. 600 gallons.
Question: How important is a dimmer on the skylight? Like particularly in the middle of the summer.
Answer: You can add the optional tubular skylight dimmer if you have a room where you want to be able to turn on and off the skylight provided natural light during the day. This works much like drawing a blackout curtain over a window.
Question: Can you change the type of diffuser after installation?
Answer: Yes, you can swap out one diffuser for another at any point after the installation.
Question: can I remove a portion of the housing to see into the attic?
Answer: No. If you could, then rain, birds and insects could get in too.
Question: I own a L shaped home that's 1,700 SF under roof. Would I need two 12W solar roof vent units, one for each side of the roof or 1 30W centrally located on the roofs center? Which would be more efficient?
Answer: It's a good question, but one that we are not able to answer with any technical certainty. That's because there are many variables involved such as the pitch of the roof, the amount of insulation, etc. Check out the Solar Attic Fan Estimator here: https://www.greenbuildingsupply.com/c...
Question: Does the fan have a thermostat?
Answer: There is a thermal snap switch we sell that is an optional add-on should you want the fan to turn on and off during certain set temperature ranges. Without this add-on switch, the fan circulates the air all the time.
Question: I have a 2000 square feet house two story which wattage fan is best ?
Answer: These are solar attic fans, so best wattage fit is determined by the square footage of your attic, not your entire house. Here is a handy reference sheet. https://www.greenbuildingsupply.com/c...
Question: Odor barrier replacement kits where do I purchase them ?
Answer: You can buy them through us. https://www.greenbuildingsupply.com/A...
Question: Do you have a model that can run on a 12 volt transformer?
Answer: These are all self contained systems of solar power source and fan (no external power is needed), so I do not understand your question. We do not sell stand alone attic fans.
Question: What happens in the winter - midwest/snow belt? How well does the system work in the winter in a snowbelt state? is it still active with less sunlight?
Answer: It will work just fine, provided you mount your solar panel in a place that will get year round sun exposure. In the snowbelt that will mean pointing your panel to the south.
Question: How many filters in this?
Answer: The unit comes with three high-performance ceramic filter elements. Each filter can be cleaned and used up to 50-100 times.
Question: What is the longevity (useful service life) of this item?
Answer: Natural Light Solar Attic Fans come with a 25 year warranty on their motor. It's almost impossible to say what the expected useful life of a motor is because of the variations in climate. I have 3 solar attic fans in may Iowa home for almost 15 years and it's still going strong.
Question: This may seem odd. I am looking for a 20" or 24" solar fan to pull air from outside to push through solar heated space through wood storage area for drying lumber?
Answer: Sure, why not. You can direct the fan either inside or outside. Obviously, it will only work if there is sun and depending upon how quickly you need your lumber dried and how much sun you get, it may or may not be a good idea. It's certainly more sustainable and less expensive than paying for electricity every day.
Question: Where is the NSF performance data sheet posted so I can take a look?
Answer: The AquaRain meets the stringent NSF standards. However, AquaRain must pay an annual fee to be allowed to claim NSF certification so its dealers can post the NSF performance data sheet. AquaRain paid the annual fee for many years, but a few years ago the company decided its customers were better served by foregoing the certification so they can offer their product at a more affordable price. That's why there is no NSF performance data sheet posted with this product.
Question: Is this certified as a counter-top RO filter + activated charcoal too?
Answer: No, because it is not a reverse osmosis (RO) filter.
Question: south facing gable! Do I put solar panel on afternoon facing slope or morning facing slope?
Answer: You want to place the solar panel on the slope of the roof that gets the most sun, while being aware of any obstacles that may present a shadow/block the sun throughout the day. If a southern exposure is not available (which is the recommended default), you should do the best you can with what is available.
Question: the gable is south facing, do I place the solar panel on the west or the east slope?
Answer: You want to place the solar panel on the slope of the roof that gets the most sun, while being aware of any obstacles that may present a shadow/block the sun throughout the day. If a southern exposure is not available, you should do the best you can with what is available.
Question: does the fan item include a solar panel?
Answer: Yes, the natural light energy systems solar attic fan does come with a solar panel.
Question: Is this a good prepper filter, as in emergency preparedness? If so, how does this compare to the Big Berkey Water Filter or others?
Answer: Yes, indeed this is THE prepper filter! It was originally developed for that purpose, and the other competitors copied the original. AquaRain is the ONLY gravity water filter made entirely in the USA. This includes the stainless steel housing, filters, faucet�??everything. Berkey filters (black Berkey), which you mentioned, are imported from China, and the metal either China or India. Other filters claim to be made in America, but they are only assembled here. This is important because you can be confident AquaRain stands up to regulations and that their stainless is pure. (no lead, mercury, etc.).
Question: I have a Aqua Rain Gravity Filter system bought in 1998 that is 20 inches high, Stainless Steel with 4 filters in it. My second set is wearing down and I'm looking to replace the filters but on my unit the filters are held in place with big white plastic wing nuts underneath. The filters on your site do not show a wing nut, will they fit? and are they the same, but with a different type of nut to hold them to the upper unit? Also being retired now, I have to watch my expenses,my previous replacement set of filters in 2011 was $79.00 I know things go up, so can I use just 2 filters in my unit and seal off the other two holes, and if so do you have plugs that can be used to do so. I would appreciate any answers Thank You for your time.Marty
Answer: if you purchase a ceramic filter element today it will fit in ANY unit ever sold in the past. The important thing to remember is to be sure and use the hardware that will come with the new set of ceramic filter elements. Do not try and use the wing nut and etc. from the old filters. Yes, you can use two filters with two plugs. Prices have increased over the past 9 years to $89.98.
Question: What are the dimensions/measurements of the unit ?
Answer: The unit measures 9.8 x 9.8 x 22 inches, weighs 13 pounds (unfilled), filters 3 gal/hr and stores up to 3 gallons.
Question: Does this filter remove fluoride?
Answer: No.
Question: Will I feel a difference in my house after being away for more than 8 hours?
Answer: Perhaps. It all depends upon whether you purchase an attic fan that is large enough to move the hot air out of the attic. These are not like whole house fans that extract huge amounts of air quickly. This is slow, gradual and very quiet. Attic fans reduce the temperature in attics by 10-20% which is 8-15 degrees. That may or may not be noticeable on the first floor. If the temperature rises during the day faster than the fans can remove it, you may not notice much at all. The purpose of these fans is to reduce the temperatures in the attic as well as reduce the demand on air conditioning. It will also help control mold and mildew and preserve the wood in your attic. They are not supposed to cool the air as well as an air conditioner would but they definitely reduce the need for as much air conditioning which saves money.
Question: Does it remove lead and other heavy metals?
Answer: Hello Antigoni, Thank You for your question. The AquaRain Water Filter does remove heavy metals, including lead, as well as other harmful microorganisms.
Question: How many gallons does it hold?
Answer: 3 gallons.
Question: What are the differences between the different models? less splash? easier maintenance?
Answer: The main difference is the size. Maintenance will be identical. Larger sizes are often used to cover the footprint of the previous urinal.
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