For selfish reasons, I was a bit relieved I did not have to give Door to Door my credit card number. If I failed to cancel the order at least a week before the scheduled drop-off date, I would have been charged. Yikes. If you cancel within that seven-day-prior period, you forfeit your deposit. If you cancel when the driver arrives at the initial location, you give up the deposit and delivery fee. Ouch. In fact, the FAQ on the site suggests you give as much notice as possible if you are canceling. Some competitors, however, allow people to cancel up to 24 hours in advance for a full refund.
The filter with more pleats per foot across the face will allow you to have better airflow throughout your home.  The more air that flows through your house, the more often it is passed and re-circulated through the filter. The end result is cleaner air because of the higher frequency of air passes through the filter.  For example, if you could find a way to install a hospital grade operating room filter in your home unit, it wouldn’t do you much good because your fan and motor doesn’t have enough power to push enough air through it.  A good quality filter with a high MERV 11 rating can actually leave you with dirtier air than using a cheap 1 dollar filter if the MERV 11 filter doesn’t have enough pleats per foot.  Less pleats per foot is a cheap and dirty way for filter sellers to trick buyers into thinking they are getting a better deal. Insist on MERV 11 filters that have a minimum of 18 pleats per foot!  Source

Just an observation, as I've tried to educate myself about home filtration systems, I have found a surprising number of sites that try to appear unbiased, but with a little reading can be seen to be favoring filters over all other system types. It may be that filters are better for certain applications. But the fact that they're being sold as 'all-things-to-all-people' makes me suspicious. The fact that at least a couple of sites (usually .org sites) appear to be hiding their identity also makes me suspicious. It also makes me wonder what so good about the non-filter systems that has the filter folks so worried.

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Many new energy efficient homes come with HRV’s.   These provide a source of fresh filtered air into the house and exhaust the stale air.   Most route the air in and out of the furnace ducting.    HRV’s have several filters including sponge sheets as well as the corrugated core.    Vacuuming or washing with soap and water usually does the trick – follow the instructions in the owner’s manual.  Sometimes instructions are labelled inside the unit too. These filters are very important for air quality in today’s newer, tighter houses.

While Door to Door has many large followings, famously including college kids moving in and out of dorms, those of you on the east coast have not heard much of it. In fact, 17 states do not have a Door to Door location at all. Others might have a location or two within their state, but they are spread out and cater to a niche group. As a result, this might be a decent option for those in the Door to Door sweet spots, but it's not readily available to everyone in the way of their competitors.


Undergravel filters sit below the gravel (yet another filter name that leaves nothing to the imagination) and suck water and debris through the gravel. The idea is that the debris will get trapped in the gravel. Then the debris-free water passes up through the tubes. An airstone and air pump are attached to the top of the tube to create the suction.

Some of my goods were damaged clearly during transportation. Additionally, it was impossible to arrange delivery and pick up times once you picked your day. (This inconvenienced the buyers of my home, as the storage containers sat in front of the house until 5pm despite closing at 10am.) However, I booked them for their convenience and their customer service is great.
Sponge filters can look large and bulky in your tank. Some air pumps can be pretty noisy, too. Most sponge filters are rated for tanks up to 10 gallons in size, which limits options for larger tanks. But there are solutions out there–multiple sponge filters in a single tank could provide adequate filtration rates. And some sponge filters pair well with certain HOB filters.
Welcome to Unfiltered from #TeamFilterTime! The Unfiltered Series is an opportunity to sit down with top members of our organization and community to ask those burning questions we’re itching to know the answers to. In our first installment, we sat down with Blake Koch, founder and President of FilterTime, and former driver stock car driver in NASCAR’s Xfinity Series. The community has questions, and Blake has the answers.
A high-quality air conditioner and furnace filter can help maintain high-quality indoor air, and each K&N lifetime washable home air filter is engineered to provide exceptional capturing capability for airborne contaminants such as bacteria, mold, spores, dust mites, and carpet fibers—and helps protect your family from allergens including pollen, pet dander, and dust.
The body, which is often called the canister, is significantly larger for these filters than it is for other types of filters. Each canister will have locations to hold each different type of filter media, and the large canisters will have more filter media. This type of filter does take more effort to set up and maintain, in exchange for its power and flexibility.

The Brita On-Tap Faucet Filter uses carbon to remove common contaminants like lead, chlorine, asbestos, and more from your drinking water. The unit simply screws onto your kitchen faucet, and one filter can be used on up to 100 gallons of water. As an added bonus, it includes a built-in filter indicator that lets you know when to replace the filter. Reviewers say this product leaves their water tasting cleaner, and many love how easy it is to install and use.
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