Find Out: What's the Difference Between Disposable and Reusable Furnace Filter Sizes?

Are you tired of constantly replacing your furnace filters? Are you unsure if you should invest in a reusable one? Well, you're not alone! Many homeowners struggle with deciding between disposable and reusable furnace filters. But don't worry, we’re here to help you understand the differences.

Disposable filters are typically made of fiberglass and are designed to be replaced regularly, usually every 1-3 months. These filters are cheap and easy to find at your local hardware store or online. However, they can be less effective in capturing smaller particles like pollen and dander.

On the other hand, reusable filters, such as pleated or electrostatic filters, can be more expensive upfront but can last for years with proper maintenance. They are generally more effective at capturing smaller particles, resulting in cleaner air and a healthier home. So, which one is right for you? Let's find out!

Understanding the Sizes and Measurements of Furnace Filters

When it comes to furnace filters, you'll find that there's no "one size fits all" option available. Furnace filters come in various shapes, sizes, and measurements, and it's important to understand these differences before selecting the right one for your heating system.

The first thing you need to know is that furnace filters are measured in two ways - the nominal size and the actual size. The nominal size is the size that's printed on the filter, which is often rounded up to the nearest inch. The actual size, on the other hand, is the size of the filter once it's been installed in your furnace.

It's important to pay attention to both the nominal and actual sizes when selecting a filter. If you purchase a filter that's too large, it won't fit in your furnace, and if it's too small, it won't effectively filter the air. To make sure you get the right size, measure the existing filter or the filter housing in your furnace.

When it comes to the shape of furnace filters, you'll find that there are three main types - rectangular, square, and circular. Knowing the shape of your filter is important when selecting a replacement, as it will determine the type of filter you need. Additionally, you'll want to make sure that the filter material you choose is compatible with the type of furnace you have.

In summary, when selecting a furnace filter, pay attention to both the nominal and actual sizes, the shape of the filter, and the material it's made from. By finding the right filter for your heating system, you can ensure that the air in your home is clean and safe to breathe.

Pros and Cons of Disposable Furnace Filters

When it comes to choosing between disposable and reusable furnace filters, one of the options you can consider is disposable filters. Let's take a closer look at the pros and cons of using these types of filters in your HVAC system.

Pros

1. Cost-Effective: One of the biggest advantages of using disposable filters is that they are typically less expensive than reusable filters, making them a cost-effective option for homeowners on a budget.

2. Easy to Install: Disposable filters are incredibly easy to install, and you can replace them quickly when they become clogged or dirty. You don't need any special tools or equipment to replace them.

3. Variety of Options: Disposable filters come in a wide variety of sizes and filtration ratings, making it easy to find a filter that's suitable for your HVAC system.

Cons

1. Not Eco-Friendly: Disposable filters are designed for one-time use and are not recyclable, which means they can contribute to the accumulation of waste in landfills. This can be a concern for environmentally conscious homeowners.

2. Need Frequent Replacement: Because disposable filters can't be cleaned and reused, they need to be replaced more frequently than reusable filters. This can be inconvenient and time-consuming.

3. Limited Efficiency: In general, disposable filters are less efficient than reusable filters when it comes to capturing small particles like pollen and dust. This can lead to a lower indoor air quality, which may not be suitable for people with allergies or respiratory issues.

Overall, disposable furnace filters can be a cost-effective and easy-to-install option for homeowners. However, their limited efficiency and negative impact on the environment make it important to carefully consider your options before making a final decision.

Pros and Cons of Reusable Furnace Filters

Reusable furnace filters have become increasingly popular in recent years as homeowners search for ways to reduce their environmental impact and save money. Here are some of the pros and cons of using a reusable furnace filter:

Pros:

  • Cost savings: Reusable filters can last up to five years with proper care, which can save you money in the long run compared to replacing disposable filters every few months.
  • Environmental benefits: By using a filter that can be washed and reused, you'll save on the environmental impact of producing disposable filters.
  • Less waste: Fewer disposable filters mean less waste in landfills.
  • Better filtration: Reusable filters often have a higher MERV rating (Minimum Efficiency Reporting Value) than disposable filters, meaning they can capture smaller particles and provide better indoor air quality.

Cons:

  • Maintenance: Reusable filters require regular cleaning to maintain their effectiveness. This can be time-consuming and may not be feasible for some homeowners.
  • Initial cost: The upfront cost of a reusable filter is often higher than a disposable filter.
  • Capture efficiency: While reusable filters may have a higher MERV rating, they may not capture as much debris as a disposable filter due to their design.
  • Filter efficiency over time: Reusable filters may lose their effectiveness over time, especially if they are not properly maintained and cleaned on a regular basis.

Ultimately, the decision to use a reusable furnace filter comes down to personal preference and lifestyle factors. If you're willing to invest the time and effort into maintaining a reusable filter, it can be a cost-effective and environmentally friendly option that provides better indoor air quality. However, if you prefer the convenience of disposable filters, they may be a better choice for you.

How to Choose the Right Furnace Filter Size for Your Home

Choosing the right furnace filter size for your home is a crucial step in ensuring your heating and cooling system operates efficiently. Here are some tips to help you choose the right furnace filter size:

1. Check the current filter size: Check the current filter size to ensure you purchase the correct replacement. The size is generally printed on the filter itself, or you can check the owner's manual for your furnace.

2. Measure your filter: If there is no label or manual available, you can measure your existing filter to determine the correct size. Measure the length, width, and depth of the filter in inches.

3. Consult an HVAC professional: If you're still unsure about the right size filter for your furnace or if you're upgrading to a higher efficiency system, consulting an HVAC professional can help you make the right decision.

4. Consider the MERV rating: The Minimum Efficiency Reporting Value (MERV) measures the filter's ability to capture airborne particles. The higher the MERV rating, the finer the particles the filter can capture. Keep in mind that higher MERV ratings may require more frequent filter replacement.

By following these tips, you can ensure that you choose the right size furnace filter for your home's heating and cooling system, improving indoor air quality and maximizing energy efficiency.

Maintenance Tips for Reusable Furnace Filters

Reusable furnace filters are cost-effective and eco-friendly alternatives to disposable filters. However, to ensure that they last long and function effectively, they require proper maintenance. Here are some maintenance tips:

Regular Cleaning: Cleaning your reusable furnace filter is essential to remove dust, debris, and allergens that get trapped in it. Follow the manufacturer's instructions on how often to clean it. Typically, it's recommended to clean it once a month.

Cleaning Methods: You can clean your reusable furnace filter using various methods. The most common methods include vacuuming, washing with soap and water, and using a cleaning solution. Ensure that you rinse and dry the filter thoroughly before reinstalling it.

Inspect for Damage: It's important to inspect your reusable furnace filter for any signs of damage regularly. Check if the filter has tears, holes, or worn out material that may affect its efficiency. Replace the filter if it's damaged.

Store Properly: If you are storing your reusable furnace filter for an extended period, ensure that you store it in a clean and dry area. You can place it in a resealable bag to protect it from dust and other elements that may clog the filter.

Keep a Record: It's helpful to keep a record of when you last cleaned and inspected your reusable furnace filter. This helps you know when the filter needs maintenance and when it's time to replace it.

By following these maintenance tips, you can ensure that your reusable furnace filter functions effectively, reduces your energy bills, and improves your indoor air quality.

Conclusion: Which is Better for Your Home?

To answer the question of which is better - disposable or reusable furnace filter sizes - it ultimately comes down to personal preference and budget. Disposable filters are convenient for those who prefer a one-time purchase and replacement, while reusable filters are eco-friendly and cost-effective in the long run. Regardless of your choice, both options are effective in improving indoor air quality and ensuring your HVAC system operates smoothly. Whichever type you choose, make sure to regularly replace or clean your filter to make the most out of your investment and keep your home comfortable all year round.

Frequently Asked Question

It's important to know the size and type of furnace filter you need before replacing it. This is because different furnaces require different sizes of filters. Your brand of furnace may need an electrostatic or media filter of a particular size - so make sure to check your old filter for these details.


Replacing your filter regularly can save you money in the long run. It helps your HVAC system become more efficient, and also keeps the air quality high. So, what are the most common furnace filter sizes?


The most popular furnace filters come in the following dimensions: 10x20, 14x20, 16x24, 18x30, 12x12, 14x24, 16x25, 20x20, 12x20, 14x25, 18x18, 20x24, 12x24, 14x30, 18x20, 20x25, 12x30, 15x20, 18x24, 20x30, 12x36, 16x20, 18x25, 24x24 and 25x25. You can use your existing filter as a reference guide to find the perfect size for your furnace. The filter dimensions should be printed on its frame as length x width x height.


In conclusion, it's important to know your furnace filter size before you replace it. Doing so will improve your HVAC system's efficiency and save you money in the long run. Plus, a clean filter is key to keeping your air quality high.

When it comes to furnace filters, exact size matters. If you get a filter that is too small or too big, air will flow around it instead of through it, meaning not all of the air will be filtered. That's why it's essential to use the right size filter for your HVAC unit.


Here's what you need to know: the size of the air filter is typically listed in the big, bold font on the packaging, which is known as the nominal size. This is a rounded-up whole-number version of the actual size, which is written in the fine print on the filter's frame. That's usually 0.25'-0.5' smaller than the nominal size, and the actual measurements of the filter may vary slightly depending on the brand.


In some cases, less common sizes come true to size, meaning the nominal size is the same as the actual size. When that's the case, it's usually noted with “actual size” in parentheses on the filter's frame.


So, the verdict is in: the answer to the question 'Do furnace filters have to be exact size?' is a resounding yes! Be sure to get the right size air filter for your system to ensure it runs smoothly and that you reap all the benefits your filter has to offer.

Are you looking for the best furnace filter? Look no further! Our team of experts at This Old House Reviews have researched the top five furnace filters on Amazon to help you find the perfect one for your HVAC system. Plus, these products are available at local home centers or online retailers like Amazon.


A great furnace filter can make all the difference. It will keep your HVAC system running smoothly, potentially leading to lower electricity bills and better air quality. That's why we've taken the time to compile a list of the best furnace filters for you.


At the top of our list is the Filtrete furnace air filter. It promises to last up to three months and outperform filters made with fiberglass. Plus, it can capture 64% of airborne particles like pet dander and pollen. This filter also comes with instructions for easy installation on HVAC systems that require filters 20 by 25 by 1 inches in size.


Customers love this furnace filter. They find it easy to install, sturdy, and a great value. However, some customers have faced difficulties with Filtrete’s app.


When choosing a furnace filter, make sure to take into account its size, filtration level, and material. That way, you can get the best filter for your specific needs.

Changing or replacing your furnace filter is one of the best ways to maintain a healthy, efficient HVAC system. But you need to make sure that you're using the right filter for your system. Here's a step-by-step guide to help you pick the perfect one!


First, measure the dimensions of your existing filter. This will tell you the length, width, and depth you need. The easiest way to do this is to look at the existing filter and buy the same size.


Next, you need to choose the right MERV rating. The MERV scale ranges from 1-20 and measures the filter's effectiveness at catching particles in the air. The higher the value, the more effective the filter is at trapping particles, but it also means less airflow.


Now it's time to decide on the type of filter. There are many options available, so take some time to research the best type for your system.


Once you have everything you need, it's time to install the filter in your furnace/air handler slot. Remove the old filter to make room for the new one.


Finally, make sure to replace your filter regularly. If it clogs up with dust and particulate, it can reduce airflow and become ineffective.

Furnace air filters are essential for your heating system. You should replace your filter at least once every three months. So, how do you select the best furnace filter for your needs? Let us help you out!


Generally, furnace filters are made up of a cardboard frame, fiberglass filter, and metal mesh. These materials work together to strengthen the filter and protect your HVAC components from dust and debris. Plus, they also help improve the air quality in your home. Without a filter, your HVAC system could become dirty and its performance would suffer.


As air passes through the furnace filter, it traps and catches any contaminants. If you don't replace or clean your filter regularly, it can obstruct airflow and cause damage to your HVAC system. In most cases, you should change your furnace filters every three months. However, you may want to replace them more or less often depending on the situation.