Blowing it out increased airflow dramatically in every room. So, while higher MERV ratings are more efficient, the recommended MERV ratings for residential filters are between MERV 7 and MERV 13. Close. The higher the MERV rating on a filter, the fewer dust particles and other contaminants that can pass through it. MERV Ratings for HVAC Air Filters. The last house I bought was probably 75% blocked with dust and caused my unit to perform incredibly poorly. MERV stands for Minimum Efficiency Reporting Value. Minimum Efficiency Reporting Value, commonly known as MERV, is a measurement scale designed in 1987 by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) to report the effectiveness of air filters.. What MERV rating you choose between 7 and 13 depends on what level of filtration you require. What are MERV ratings? MERV stands for Minimum Efficiency Reporting Value. We no longer have the manual, reading the online version shows no … Next time I'll check/confirm that the MERV rating is OK. ... /r/woodworking is your home on reddit for furniture, toys, tools, wood, glue, and anything else that has to do with woodworking as a hobby or profession. HVAC engineer here... Go with MERV 8. If you put a low-flow "air cleaning" filter on your HVAC system, you will decrease the load on the blower motor (which is a bad thing, it can over-spin and burn out - it needs a load to operate properly), will reduce airflow and thus reduce efficiency, and will cause your HVAC system to run longer and perform poorly at the same time. If it can wait until things are safer, we'll wait. Yes, we recognize how lucky we are with a lot of the house (knocking wood again). Thank you. Reward minimal, risk maximum. Press question mark to learn the rest of the keyboard shortcuts. It shows the percent of different size particles trapped by filters with different MERV ratings. They protect themselves and their clients. If you want clean air, get a room-sized air cleaner. MERV ratings can impact how frequently the air filter must be changed, but other factors related to your household have a greater impact, such as HVAC system use and indoor environmental conditions. Merv 8 is a good standard to start with. At some point, I started to get filters with higher MERV ratings. MERV ratings range from 1-16 with higher ratings corresponding to smaller filter pores and thus greater air filtration. Most recently we had a part replaced instead of a control board, on their advice. Why? Old York Diamond 80 home units. Stick with MERV 8? They are things we recognize might have gone at any time, and should be replaced. I'm trying to decide what good/sufficient merv rating to buy to save a few bucks without sacrificing on air quality. Frugality is the mental approach we each take when considering our resource allocations. House was built in 1998. The HVAC filter should only be used to protect the A-coils from clogging due to dust. Or in English, “how effective is your air filter?” MERV ratings range from 1-16. What MERV Rating Should I Use? Changing out the entire 2 zone HVAC system, and the water heater are coming. If you are concerned you can test the ESP. If you are worried about being unable to find the correct-sized filter – don’t worry. MERV 8 should be fine. One common term used when discussing air filtration is the MERV rating. The amount of carbon used on each filter is designed to meet the maximum level of dust capacity for air filters (2-3 months) and filters at a level equal to a MERV 8 rating furnace filter. By using our Services or clicking I agree, you agree to our use of cookies. The only caveat is if you live someplace super dusty. • MERV 1 through 4 traps less than 20% at 3.0 to 10.0 microns. Those flat spun fiberglass filters have a MERV rating of 1-4, so they hardly block anything. Look for cleaners with MERV ratings of 10 or higher, as this indicates a more efficient filter. It does a good enough job of protecting equipment. Definitely have a pro look it over ASAP. MERV 2 to 3 – If you buy your furnace filters from big-box or discount stores, you are not saving a penny. Thought about bumping up to a higher level, but there isn't really any good reason. Average life expectancy for a gas furnace nationwide is 15 years. The rating is derived from a test method developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) [see www.ashrae.org]. The American Society of Heating, Refrigerating and Air Conditioning Engineers, also known as ASHRAE, designed the MERV metric. MERV ratings are an abbreviation for Minimum Efficiency Reporting Value. The higher the MERV rating the better the filter is at trapping specific types of particles. The chart shows that to remove at least 85% of the PM2.5 from the airstream, you have to … OK, so I get the higher the MERV rating, the better filtration BUT isn't it also important to consider the equipment? I can't say if the heat exchanger has ever been replaced, but I do recall something being cracked and replaced in the past. It includes time, money, convenience, and many other factors. They remove large airborne particles that could otherwise damage your heater or air conditioner, but they do little in the way of improving your indoor air quality. We've been lucky that that decision hasn't been forced by failure on us yet. Posted by 3 years ago. Ideal MERV rating for shop filtration unit. I had a MERV 11 filter in at one point and a tech told me that it may be impeding airflow as a result...he suggested I switch to a cheap fiberglass filter as its easier on the equipment...I've seen conflicting opinions on this sub as well. The rating system was created by the American Society of Heating Re The home air filters you're looking for are rated anywhere between MERV 5 and 13. That's out of my wheelhouse and I'm not that concerned. The York’s of that period had a lot of issues and are prone to cracking the heat exchanger (very unsafe condition). Take a moment to understand what MERV ratings are, and how they applied to your application. Well, MERV ratings range from 1 to 20, with 1 being the lowest level of filtration, and 20 being the highest. Most recent orders have been MERV 8. If your family has allergies or asthma, a higher MERV rating will be good for you. The rating system is measured by a number between 1-16 with 16 being the best and 1 being the worst. Had to google ESP. Filters with higher MERV ratings can trap smaller particles. We're original owners with the original system. Have a tune up done on your furnace very soon. What is a Merv rating? This is an industry standard rating system. We've been using MERV 8 for at least a few years. Yours is 22. MERV ratings for HVAC air filters range from one to 20. What MERV Ratings Should I Look For? The best way to clean the air in your home, and keep it clean, is with a whole-home filtration solution with a high MERV rating, which works with your heating and cooling system to distribute healthier, filtered air throughout your entire home. But then it's just a frequency of change thing. Contact us online or phone 630-393-9500 We serve Warrenville, Carol Stream, Downers Grove, Geneva, Lombard, West Chicago, Naperville, and Batavia and nearby communities. The first is the difference between HEPA and MERV filters and the definition of each. Ranging from 1-16, MERV ratings score the performance level of a filter related to the … A micron is a millionth of a meter. They do generally check/change the filter during their visit. In simpler terms, this means that any MERV 8 rated air filter will have the same level of filtration another filter with a MERV 8 rating, no matter the material, quality, or construction. Here’s what we tell them: Think of MERV 8 filters as a “good” option, and MERV 11 filters as the “better” option for normal residential use. They are quite cheap. The range is from 1 (lowest efficiency) to 20 (highest efficiency). It usually starts with "When is the last time you changed the filter" and is followed by either my shoulder shrug or other equally stupid response. 1. Higher Is Not Always Better. This would include pollen, dust mites, standing dust, spray paint dust and carpet fibers. New comments cannot be posted and votes cannot be cast. Press J to jump to the feed. I use a MERV rating of 8-11 for my HVAC systems. Maybe it's one less interaction between the professionals and a gas station attendant (NJ), or the convenience store workers, or the other people also out and about. Cookies help us deliver our Services. Most recent orders have been MERV 8. The MERV rating, or the minimum efficiency reporting value, is a measurement of how effective an air filter is at removing dust and debris. A MERV rating chart shows a numerical value. Thank you. cheapest you can find and change monthly. I've read that too high a MERV will burden the furnace. 1-4 MERV – This is the lowest end of filters. You should never buy a filter for your HVAC system that is for "air quality". It will work far better. Does your pro tip only apply to air conditioners? without sacrificing on air quality. At some point, I started to get filters with higher MERV ratings. We've had a local company out for repairs a number of times over the years. Press question mark to learn the rest of the keyboard shortcuts. The answer to this question will vary based on your HVAC system, but generally aiming for a MERV rating between 8 and 13 is ideal for the typical home. Rather, you are setting yourself up for some big expenses. The acronym MERV stands for minimum efficiency reporting value. Of course, catastrophe could mandate s quicker change. The super cold wintery months are approaching. I use a MERV rating of 8-11 for my HVAC systems. What is wrong with a fibreglass filter? They have been fairly priced, honest, and straightforward in comparison to all the others that we called prior. Otherwise get the generic ones, which are pretty much going to be MERV 8. A technician can examine your duct system and measure airflow and tell you what your system can handle in terms of MERV filtration better than anyone here can. For most homeowners, a MERV rating of 7 or 8 with a pleated filter provides a good balance between cost and efficiency. They were here for two jobs during the pandemic, they were safe and professional. 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