Second Nature Filters Review

About Second Nature

Second Nature Filters

Second Nature allows homeowners to rest easy, making the mundane task of changing your filters simple and affordable. Its high-quality products can sift toxins and allergens, like pollen, mold, bacteria, and mites, from the air—all things that we’d bet you don’t want to be breathing in.

Believe it or not, there’s a lot more to living a healthy lifestyle than eating your greens and hitting the gym. More than half of the air you inhale throughout your life comes from your home. Though many don’t think twice about it, the air quality in your home and water quality in your fridge are incredibly important. In fact, studies[1] have found that indoor air pollution is a significant contributor to poor respiratory health in children. 

Because your home is an enclosed space, the concentration of pollutants in the air can be 2-5x higher[2] than in the outdoors. A good filter, like those offered by Second Nature, can help remove toxins from your air, resulting in a healthier home and a healthier you.

Second Nature has been featured by notable media sources, including Forbes, Techcrunch, and the Triangle Business Journal. Additionally, the company has over 156k followers on Facebook—clearly, people support a cleaner, healthier living environment!

But, before you hit “Add to Cart,” give this Second Nature review a read. In it, we’ll take an in-depth look at the brand and its collection of products, customer ratings, promotions, and more to help you decide if its products are worth adding to your home.

Overview of Second Nature

Second Nature Filters

Thad Tarkington and Kevin Barry founded Second Nature in 2012. If, like us, you’re wondering what made the pair upgrade something as seemingly mundane and forgettable as air filters. Well, it’s exactly that mundane and forgettable nature that inspired Thad and Kevin to take a second look.

After a painstaking trip to a local hardware store, the duo realized how not-fun the process was. Additionally, it came to their attention that most individuals don’t change their filters when they should. (Can you remember the last time you did?)

Despite the tediousness of it all, switching out an air filter routinely every few months is vital for your personal wellbeing.

According to Second Nature, the air quality indoors can be “5 times worse than the air outside” (yikes), and there’s no logistical method the average person can use to figure out just how bad the air around them is (double yikes).

Having discovered this alarming fact, the founders sought an opportunity to create a new system that was smarter and better. They set up headquarters in Raleigh, North Carolina, and placed the well-being of homeowners first and foremost.

You’re probably itching to change your filter pronto. Before you do, this Second Nature filters review will go over some of the company’s highlights. Then, we’ll dive into what it has to offer.


  • An automatic subscription that sends a new home air filter or fridge filter when it’s time to change them
  • Two refrigerator water filter filtration levels and three home air filter options
  • Offers over 66,000 different sizes, including custom sizes
  • Helpful explanation guides
  • Positive customer testimonials
  • 30-day money-back guarantee
  • Free shipping

How Does Second Nature Work?

Second Nature Filters

Filters are designed to… well, filter. They remove harmful toxins and clean the air. Or, in the case of fridge filters, they eliminate odors, lead and stubborn bacteria that tend to linger.

Additionally, filters catch small particles that go undetected, like pollen, mold, mites, smoke, and never-ending dust flecks. Thankfully, a brand like Second Nature exists, putting aside terminology that only an expert can decipher. Its ultimate goal is to make the process as simple and easy as possible, letting you know which filter will eliminate what since not every homeowner has the same needs.

As it is a subscription-based company, this Second Nature filters review will quickly note the key features of all of the subscription options:

  1. You choose the size and type of filter
  2. You schedule how many you want and when
  3. You pop in the new filter and toss away the old one (don’t worry—instructions are included!)

Easy, right? The cost of the filter depends on the type you’re getting. What it comes down to is what the filter catches (the more it catches, the pricier it’ll get) and how many you want per order.

At this time, the brand does not offer non-subscription purchases. But, you can cancel your Second Nature filter easy subscription at any time.

If you’re feeling confused, don’t worry. This Second Nature filters review will now individually break down each subscription option.

Second Nature Fridge Filter Subscription Review

Picture this: you had a busy day with kids and work. You come home needing a tall glass of water only to be completely turned off by its taste. That’s a good sign that you need to switch out the filter. 

Many Americans, unfortunately, face issues[3] with their water quality. Although the US is a developed country, and we’d expect the water to be clean, contaminants can still weasel their way in. A good filter is one way to solve this issue.

And, if you think there can’t possibly be that many fridge filters out there… think again. According to Second Nature, there’s a filter for every type of fridge, sizes, certifications, and manufacturers.”

Thankfully, the brand has done all the work for you.  Second Nature easy filters remove the hassle of calling in an expert. After a ton of research, the company developed two options that actually work.

On its website, you’ll find two types of fridge filters:

  • Each Sip: recommended for those with a trusted water source but are seeking a better taste.
  • It Matters: recommended for those who want to ensure that the water they consume is safe and healthy.

Let’s start with a look at the Second Nature Each Sip filter. Designed for your tap water, this product connects to your fridge system to reduce odors and enhance the taste of good ol’ H2O.

Each Sip uses activated carbon to clean out pollutants. It actually uses coconut shells in this process, ensuring a product that is safe for both you and the environment. The use of activated carbon is one of the oldest methods[4] of sanitizing water, so it’s tried and true. Meant to be changed every 3-6 months, each delivery of Each Sip will run you $29.

Onward to the Second Nature It Matters filter. While it still turns “renewable coconut shells into carbon blocks” to clean your water, resulting in a better smell and taste, this one eliminates contaminants like mercury and lead as well. These heavy metals have been linked to diseases[5] such as cancer and cardiovascular disorders, so limiting your exposure to them is very important.

Also meant to be changed every 3-6 months, It Matters costs just $39 per subscription order, which is a much better option than traditional filters, which cost upwards of $50-$60.

Now that you know what your Second Nature fridge filter options are, let’s go into the subscription process:

  1. Pick the brand and type of fridge you own.
  2. Select the type of doors your fridge has, which will help the brand determine its size.
  3. Determine where the filter is, such as in the lower center or upper center of the interior.
  4. Second Nature will then pull up a 3D rendering of the filter for you to confirm that the filter is a match.
  5. Click on the type of filter you want: Each Sip or It Matters
  6. Select how often you’d like to switch out your filter (anywhere between 1-12 months).
  7. Check out!

Second Nature Air Filter Subscription Review 

We’ve briefly discussed how air filters eliminate so much of what gets caught and circulated within our homes. Changing out your air filter is incredibly important, so think about it seriously before popping in that square contraption most people don’t even give a second thought to.

There are three Second Nature Air Filter Subscription options:

  • Merv 8 – Catch Some
  • Merv 11 – Catch More
  • Merv 13 – Catch All

Which option you choose will depend on how many particles you need to catch, depending on whether you own a pet, cook a lot, or smoke. As we dive into each variety, we’ll provide the starting costs, but your final bill will depend on the filter’s dimensions.

First up, the Second Nature Merv 8 – Catch Some filter. Thought of as the most standard option, this one removes bigger particles, including bacteria, mold, mites, pollen, and dust. 

If you suffer from allergies, this product can make your life a whole lot better. Studies[6] have shown that air filters are effective in helping to relieve symptoms. Since this filter is the most simplistic, it’s also the cheapest, starting at $16 per subscription.

On the other hand, the Second Nature Merv 11 – Catch More filter is ideal for homeowners with children who need to minimize the number of small particles entering their homes. This model begins at $20 per subscription.

This option is also recommended for pet owners, as in addition to removing everything the Merv 8 does, it also filters out pet dander. If you’re the proud owner of a furry friend, you know there’s no way you’re giving them up, even if they give you the sniffles. An air filter is an easy and effective solution for improving your symptoms[7].

Lastly, the Second Nature Merv 13 – Catch All filter that does it all. In addition to all of the particles that the previous two models eliminate, this one also filters out cooking oil, viruses, smoke, and smog. If you smoke in the home (or are just prone to burning food in the oven), an air filter is vital for reducing air pollution. Although the number of particles in the air will still be greater than outside if you smoke indoors, it will be significantly reduced[8]

If you cook particularly potent meals frequently or smoke, the Merv 13 is also the best option for you. As the most heavy-duty model, it retails at $24 per subscription order.

Now that we’ve gone through the options, let’s dive into how to select a Second Nature filter subscription:

  1. Click the ‘Start Your Subscription’ tab.
  2. Select how many filters your home has.
  3. Sort the filter by picking out the exact measurements of the filter you have, choosing thickness, height, and width.
  4. Choose one of the filter options (Merv 8, 11, or 13).
  5. Select how many times a year you’d like to receive your air filter(s), choosing from 1-3 months (you can change your mind later!).
  6. You’re all set! Just wait for your shipment and replace your filter(s) when they arrive.

Who Is Second Nature For?

Second Nature Filters

Depending on your living situation, changing your air filter might not be your responsibility (though, you could still check out the fridge options!). But, if you own your home, Second Nature provides an easy, stress-free method of ensuring the air you breathe in is as healthy and safe as possible.

When you place your order, you get to decide how often you would like to receive a new filter. Then, at the correct date you’ll receive one in the mail, meaning you don’t have to worry about forgetting. Ultimately, Second Nature is for anyone who wants to check something off their to-do list as easily as possible—and who wouldn’t want that?

How Much Is Second Nature?

Second Nature Filters

Though we discussed prices in more detail earlier in this Second Nature filters review, we’ll provide a quick overview. Here’s the going rate for the company’s five filter options:

  • Each Sip: $29
  • It Matters: $39
  • Merv 8: $16+
  • Merv 11: $20+
  • Merv 13: $24+

Second Nature Reviews: What Do Customers Think?

Second Nature Filters

ven), an air filter is vital for reducing air pollution. Although the number of particles in the air will still be greater than outside if you smoke indoors, it will be significantly reduced

If you cook particularly potent meals frequently or smoke, the Merv 13 is also the best option for you. As the most heavy-duty model, it retails at $24 per subscription order.

Now that we’ve gone through the options, let’s dive into how to select a Second Nature filter subscription:

  1. Click the ‘Start Your Subscription’ tab.
  2. Select how many filters your home has.
  3. Sort the filter by picking out the exact measurements of the filter you have, choosing thickness, height, and width.
  4. Choose one of the filter options (Merv 8, 11, or 13).
  5. Select how many times a year you’d like to receive your air filter(s), choosing from 1-3 months (you can change your mind later!).
  6. You’re all set! Just wait for your shipment and replace your filter(s) when they arrive.

Second Nature Reviews: What Do Customers Think?

Wanting to get an extensive account of the company, we found out what customers had to say about its products. This section of our Second Nature filters review will cover testimonials from Trustpilot and the Better Business Bureau.

On Trustpilot, the brand has an impressive 4.7/5-star rating from 1,026 reviews. Overall, shoppers report that Second Nature has a helpful customer service team, a convenient subscription service, and effective products.

Take this satisfied customer’s experience: “No more forgetting to grab a filter from the store – let alone which one when you have an ‘odd’ size… No more dismissing the calendar reminder on my phone… For me, that physical reminder of a box on the porch is well worth the extra dollar or two it is compared to grabbing one from the store.

Meanwhile, another Second Nature filters review agreed that the cost is well worth it:

Yes you can get filters for less money at the hardware store, but you’re paying for convenience, not to mention excellent customer service… If you get a fridge filter, fill out the questionnaire very carefully. We got the wrong filter but I gave them the model number of the fridge and they took care of everything at no extra cost to us. Could not have been easier, HIGHLY recommended!

To see how these sentiments hold up, we turned to the BBB. While we were happy to see an astounding A+ rating, showing us that the company promptly and successfully handles customer complaints, we also found a 2.33/5-star score.

But, this score comes from just 18 reviews, which isn’t really enough to give an encompassing view of the brand, and certainly isn’t enough to compete with the glowing Trustpilot comments. There have been just 20 complaints in the past three years, all of which were resolved by the company.

Finally, we came across an in-depth Second Nature filters review on The Old House. The author praises the shipping, subscription service, customized sizes, and the flexibility provided—a lot of pros! This article concludes:

You need to change your filters several times each year, but it’s hard to always remember when to replace them or what your sizes are. Second Nature’s service makes it easy to stay on top of this chore. Second Nature offers high-quality air filters in a variety of sizes. We like that Second Nature offers a free trial for new customers.

Overall, customers really appreciate how easy Second Nature makes this task, taking care of most of the work. The brand comes highly recommended by shoppers across the web.

Is Second Nature Worth It?

Second Nature Filters

Second Nature is worth it for two reasons: for the cost and the convenience. Not everyone can hop over to a hardware store or even has one near enough to hunt for the right filter.

And, not every house is built the same—it’s not the 1950s anymore! Homes come in all shapes and sizes and undergo different conditions like temperature and humidity increases that may affect the quality of the air you breathe.

Starting at just $16 per filter its hard to not recommend Second Nature since this is a bargain when you compare it to the damage you can do to your HVAC system by not staying on top of maintenance.

Plus, the fact that Second Nature quite literally customizes filters for your home, means saying goodbye to a wild goose chase where you’re scratching your head perplexed and agonizing over what filter to get.

You also don’t need to worry about forgetting to change your filter—you’ll have a new one sent to you exactly when you need it.

Second Nature Promotions & Discounts

Second Nature Filters

Second Nature currently has a BOGO offer for their air filters! You can find the discounts below.

  • BOGO: Get your 2nd shipment FREE! Use offer code: IPBOGOAFP

Sign Up For Second Nature

Second Nature Filters

Depending on the filter you’d like, the brand’s website redirects you to go through certain steps and prompts before checking you out. You can basically sign up in two ways by clicking:

  1. Pick Your Filters
  2. Start Your Subscription

For help signing up for the Air Filter Subscription or the Fridge Filter Subscription, check out the corresponding sections in this Second Nature filters review. There, we’ve provided a step-by-step guide.


Second Nature Filters

How do I cancel my Second Nature subscription?

If you need to cancel your Second Nature subscription for any reason, such as moving homes or going off on an extended vacation, simply follow these four easy steps:

  1. Login to your account
  2. Select ‘Edit Subscription’
  3. Click cancel
  4. Answer a few questions to finalize the cancelation

And that’s all there is to it!

What is Second Nature’s Shipping Policy?

Second Nature only ships within the contiguous US, but ground shipping is always free. When signing up for your subscription, you’ll choose how often you need a new filter sent to you, with help from the brand. Your shipping timeline will depend on those decisions.

What is Second Nature’s Return Policy?

The brand has a 30-day money-back guarantee and honors refunds as long as there is proof of purchase. But, any shipping costs will be deducted from the return amount.

How to Contact Second Nature

Have any questions after reading this Second Nature filters review? Reach out to the brand via these methods:

  • Phone: 800-308-1186
  • Request form: on the brand’s official website

Now that your homes air quality is solved why not take some time to explore your options for home furnishings. Check out our reviews for:




Hush Blankets

Buffy Comforter

Article Sources

[1] Franklin, P. J. Indoor air quality and respiratory health of children Science Direct Paediatric respiratory reviews, 8(4), 281-286
[2] Wallace, L. A. Total exposure assessment methodology (TEAM) study: summary and analysis Volume 1 (No. PB-88-100060/XAB; EPA-600/6-87/002A). Environmental Protection Agency, Washington, DC (USA). Office of Acid Deposition, Environmental Monitoring, and Quality Assurance
[3] Mueller, J. T., & Gasteyer, S. The widespread and unjust drinking water and clean water crisis in the United States Nature Communications, 12(1), 1-8
[4] Bhatnagar, A., Hogland, W., Marques, M., & Sillanpää, M. An overview of the modification methods of activated carbon for its water treatment applications Chemical Engineering Journal, 219, 499-511
[5] Rehman, K., Fatima, F., Waheed, I., & Akash, M. S. H. Prevalence of exposure of heavy metals and their impact on health consequences Journal of cellular biochemistry, 119(1), 157-184
[6] Sublett, J. L. Effectiveness of Air Filters and Air Cleaners in Allergic Respiratory Diseases: A Review of the Recent Literature Springer Link Current allergy and asthma reports, 11(5), 395-402
[7] Francis, H., Fletcher, G., Anthony, C., Pickering, C., Oldham, L., Hadley, E., ... & Niven, R. Clinical effects of air filters in homes of asthmatic adults sensitized and exposed to pet allergens Clinical & Experimental Allergy, 33(1), 101-105
[8] Weichenthal, S., Mallach, G., Kulka, R., Black, A., Wheeler, A., You, H., ... & Sharp, D. A randomized double-blind crossover study of indoor air filtration and acute changes in cardiorespiratory health in a First Nations community Indoor Air, 23(3), 175-184

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