HEPA air filters have an efficiency rating of 17 to 20. However, most residential HVAC systems can't accommodate HEPA filters because they are too large or restrict airflow. Switching to HEPA filters will significantly improve your indoor air quality, but doing so will probably require calling a heating and cooling professional to retrofit your furnace.
This unit is recommended for small to medium-sized families, and it can be used on both treated and untreated water sources. It's effective at removing a wide range of contaminants from your drinking water—it gets rid of everything from harmful chemicals like pesticides to pathogenic bacteria, parasites, heavy metals, and more. The unit has a holding capacity of just over two gallons, and its cleanable, self-sterilizing filters have a lifespan of up to 3,000 gallons.
Most of us don’t think about our air filters until they’re long overdue for replacement, which is why FilterTime created a model to have air filters delivered straight to your home automatically, reminding you to change them. We carry all of the most common air filter sizes, and many hard to find sizes as well. You can even create a custom size filter that fits your exact needs. Reduce indoor air pollution and help keep your family breathing healthier air.
"The day of move in Boston was particularly crazy because the city had closed off our street for major construction. Door-to-door worked with me on the phone to help notify the driver and then he did some voodoo magic getting those pods from his truck that was parked on a neighboring side street that was one way the wrong way and to our front door… Mad props to these guys and their drivers."
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.
That’s what comes to mind for most people when you mention a filter in a house. One of the first things you should do when taking possession of a house is to change the furnace filter. Think about it – it’s got other people’s dust and dander on it. Start fresh. Write down the size and note which way it’s installed. With some filters it matters which direction the air is flowing, so don’t get it backwards. Check your furnace manual to be sure what you should have. Most large hardware/home stores carry the standard sizes. Replace it at the start of each heating season, at least. If you have central air conditioning, this filter will be catching stuff year round. Check it monthly and change it if it looks dirty.
Unfortunately, HEPA filters restrict too much air to be used as a traditional furnace filter. A HEPA filter is extremely efficient, but a significant amount of air pressure is needed to force air through a HEPA filter. A typical HVAC system will not be equipped to provide enough air pressure to use a HEPA filter (which basically means that no air would blow out of your registers). In order to use a HEPA filter for whole house filtration, you need to install a separate HEPA filtration system. A system like this will pull some of the air out of the regular air flow through your furnace, and then boost the air and pass it through a HEPA filter. The extremely filtered air is then returned back into the normal air flow. Source