Tell Us How Often Start Service and Relax What does MERV Rating have to do with choosing an air filter? MERV stands for Minimum Efficiency Rating Value. This is an industry standard rating system that allows you to compare filters made by different manufacturers. A MERV rating is a numerical value ranging from 1 (lowest efficiency) to 20 (highest efficiency) and tells the consumer how well the filter captures and holds dirt and dust of a specified size range. The chart below shows the MERV ratings, corresponding particle size ranges, and efficiency level as measured by the percentage of particles captured. The MERV air filter efficiency rating system was developed by the ASHRAE, the American Society of Heating, Refrigerating, and Air-Conditioning Engineers. The rating system is referred to as ASHRAE Standard 52.2-2007:Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size. Standard 52.2 not only sets forth a testing protocol to ensure reliable and consistent testing of filter performance on particles of nominal 0.3-10 micron in diameter.

ASHRAE 52.2 lead to the creation of the minimum efficiency rating value, or MERV, a guideline to determine a filters performance by particle size, ranging from 0.3 – 10 micronsin size. This value is based on the lowest, or minimum efficiency for the filter. In many cases this is when the filter is first installed. Generally, the higher the MERV, the better the filter will perform at removing smaller particle sizes. MERV 1 through 4 are designed to remove large particles. These filters are used primarily to protect equipment and are used in light industrial and residential applications. For these values, the average particle size efficiency from 3 to 10 micron is less than 20%. Because of this, average arrestance, which is a measure of a filters ability to remove coarse particulate, is used to determine MERV 1 through 4. MERV 5 through 16 filters remove finer particles and are used in applications where it is important to protect individuals or processes from airborne contaminants that could otherwise affect health and productivity.

The average particle size efficiency has three ranges: E1 (0.3 to 1 micron), E2 (1 to 3 micron) and E3 (3 to 10 micron) will determine MERV for these products. At On Time Air Filters, we recommend Merv 8 filters as our "better" filter" and Merv 11 filters as our "best filter." For people with pets or otherwise desiring superior odor management, we offer a "best for pets" in some sizes.  This is a carbon activated Merv 8 filter. We do not recommend Merv 13 filters, because these filters may negatively affect certain HVAC systems. The following chart describes each MERV value in the rating system: Typical applications for the major MERV value ranges are: MERV 1 – 4 Minimum filtration, used almost exclusively in residential buildings MERV 5 – 8 Most commercial applications and better residential buildings MERV 9 – 12 Superior residential buildings and better commercial buildings MERV 13 – 16 Hospital inpatient and general surgery;

found in superior commercial buildings MERV 17 – 20 Clean rooms and pharmaceutical manufacturing Start your service today I have applied for a rebate for my HVAC system. What is the required AHRI certificate?Call To Arrange A Free Thorough On-Site Quotestanding ac unit targetRheem Air Conditioner Reviews - Consumer Ratings - Rheem offers several economical air conditioning systems from 13 SEER to 20 SEER for residential and light commercial. sizing a hvac unitRheem air conditioners come in the Prestige series air conditioner or the Classic series air conditioner and features of various Rheem air conditioners include:Rheem Air Conditioner Reviews - Consumer Ratings | central air conditioning units prices canadaSelect FeaturesEnergy Star rating on selected ACsTwo-Stage compressors in selected AC units offer higher efficiency for energy savingsOn board diagnostics on select AC units that detects and records potential problems to make air conditioner troubleshooting easier for technicians servicing the unit.

Durable cabinets with sound blankets on compressors to reduce noise on selected air conditionersSelected air conditioners use R-410A ozone friendly refrigerantEasy access panels with pressure controls on selected air conditionersTop Model SEER Rating Rheem Air Conditioner Reviews - Overall Rheem air conditioners are good systems. Rheem condensing units have unique designs that make them stand out from other manufacturers. Some units are low profile so they do not stand out. Rheem does have some proprietary parts that require you to purchase parts from a Rheem dealer if there is a problem with some components.Rheem Air Conditioner Reviews - Choosing the ContractorOne of the most important selections you can make when purchasing HVAC equipment is not the name brand of the appliance but the HVAC contractor you choose to install the product for you.It is very important that the system as a whole is installed properly lest problems occur later that will not be covered by warranty simply because the system was installed improperly.

So make sure you choose a reputable and reliable HVAC contractor for your next HVAC purchase.Rheem Air Conditioner Reviews - Consumer Ratings - HistoryRheem Manufacturing Company was established in 1920’s by Richard and Donald Rheem when the two brothers bought a galvanizing plant in San Francisco, CA. Rheem has expanded and is now a global company with offices in Europe, Australia, Canada, Asia, and South America.For more information on Rheem and their latest models and efficiency ratings visit the Rheem website.Check out our other Rheem Reviews:Rheem Gas Furnace ReviewsRheem Heat Pump ReviewsRheem Air Conditioner Reviews - Consumer RatingsHeating, ventilation, and air conditioning (HVAC) systems collectively account for approximately 40% of the electricity used in commercial buildings. These systems often offer the greatest potential for energy and cost savings through upgrades or replacement. EDGE Energy has the capabilities and expertise to help you with either strategy. After performing a commercial energy audit, we’ll design the best solution to maximize your energy efficiency.

Before retrofitting a new system, we’ll consider taking the following steps to upgrade your existing system : HVAC technology has improved so much in the last few years that even if your commercial air conditioner is only 10 years old, you can save up to 20% on your cooling energy costs by replacing it with a newer, more efficient model. Installing a new HVAC system is often the more cost effective solution than trying to max out the efficiency of an old system. Using an HVAC system that is the correct size for your facility is especially important for energy efficiency. Over-sized systems result in major energy losses and inflated costs. The federal Energy Star program has rated light commercial heating and cooling equipment, identifying for you those products that are the most energy efficient. Energy Star-rated products use 7–10% less energy than standard equipment, and can save you about $1.70 per square foot over the lifetime of the product. Don’t continue to waste energy or money on an old or inefficient HVAC system.