Is MERV 11 Or 13 Better?

Is MERV 13 too high?

One factor to consider is air flow through the system.

In some cases, using an air filter that is too restrictive for your system may cause low air flow problems as well.

MERV 13 is the highest MERV value safe for residential furnaces; the higher ratings are used primarily in commercial units..

Is MERV 13 bad for HVAC?

Minimum Particle Size Filters within a MERV rating of 17-20 are almost never necessary in a residential home. A MERV rating of 13-16 is considered hospital level air quality, so it is unlikely your home needs any more than that.

Why is my air filter dirty so fast?

When your A/C is on the thermostat fan will constantly be running causing air too run over the air filter continuously and causing it to get dirty more quickly. … You may have a leak in your air ducts – Leaky air ducts can also cause your filter to clog up and especially if it is near your AC unit.

What MERV rating is filtrete 1500?

3M Filtrete 1″ Air Filters Comparison Chart:Basic DustUltra AllergenStarting From:$5.99/filter$16.49/filterAvailable in:9 sizes30 sizes* MPR Rating:3001500MERV Rating:5125 more rows

What does MERV 11 filter out?

Use MERV 11 filters to eliminate contaminants such as humidifier and lead dust, automobile emissions, welding fumes, legionella, milled flour, and nebulizer drops in addition to larger particles like pollen, mold, pet dander, dust and dust mites, carpet and textile fibers, insect debris, sanding and spray paint dust, …

How often should you change a MERV 16 filter?

3 to 6 monthsA MERV 16 filter is the most restrictive and will likely need to be changed every 3 to 6 months. Yes, they are more expensive than the average filter, but you get what you pay for. I change our MERV 13 filter every 4 months.

What MERV rating is HEPA?

HEPA stands for High Efficiency Particulate Air filters and they are super-efficient. They will range from 17-20 MERV. HEPA filters meet standards that remove at least 99.97% of airborne particles down to the size of 0.3 microns.

Why is my furnace filter so dirty?

Your filter gets clogged faster when your furnace is running more often. That’s because more air is cycled through your filter when your furnace goes through more heating cycles, so more contaminants get caught on the filter’s media. The colder it gets outside, the faster your filter will get clogged with dirt.

Is MERV 16 a HEPA?

Acronym or Minimum Efficiency Reporting Value, MERV filters are rated based on how small airborne particles can be removed. The rating scale range from 1 to 16, above 16 would be categorized as a True HEPA filter. A low-quality filter is rated between 1-4 MERV and medium filter is rated between 5-12 MERV range.

Does MERV 11 restrict airflow?

A decade ago, it used to be that if you had an HVAC system that used panel filters rated 6 through 9 MERV, putting in a MERV 11 or higher filter would restrict airflow (known as filter pressure drop). … The thicker the filter, the more surface area per pleat.

How often should you change a MERV 11 filter?

MERV 8 filters should be changed every 3-4 months, MERV 10 & 11 filters every 6 months and MERV 16 filters every year.

Should I use a MERV 13 filter?

13-16 MERV – Filters in this category are used in hospitals and clean rooms, where airborne contaminants must be almost completely eliminated. These are not recommended for residential use as they restrict airflow and can damage your heating and cooling system.

How often are you supposed to change an air filter?

Vacation house or single occupant and no pets or allergies: every 6–12 months. Common suburban home without pets: every 90 days. One dog or cat: every 60 days. More than one pet or if anyone has allergies: 20–45 days.

Will MERV 11 hurt my furnace?

The short of it The short answer is that it can, but it’s not really an issue except under extreme circumstances. Most modern HVAC systems have no problem working with higher MERV filters.

Is MERV 11 good?

Well, everything from pollen and dust mites to bacteria and tobacco smoke. … MERV 5–8 (good): These filters are better at catching small particles (3–10 microns) like mold spores, hair spray, dust mites and animal dander. MERV 9–12 (better): The best option for residential use.

What MERV rating is best for home use?

Why We Recommend MERV Rating of 8 or Higher Protects your HVAC system from dust clogs and corrosive particles. Reduces dust in your home making for less housework. Improving indoor air quality, especially when you are spending a lot of time at home, is important for your health.

How often should you change a MERV 13 filter?

every 3 monthsFor Merv 8, 11 and 13 filters, we recommend that you change your filter at least every 3 months, however changing your filter every 2 months provides better filtration which provides healthier and cleaner air in your home.

Which MERV rating should I buy?

Well, MERV ratings range from 1 to 20, with 1 being the lowest level of filtration, and 20 being the highest. Filters that are MERV 16 through 20 are usually only found in hospitals, cleanrooms, and nuclear power plants. The home air filters you’re looking for are rated anywhere between MERV 5 and 13.