Shedding Light on Goodman Furnace Filter Size by Model Number


A Model Number Guide in Deciphering Goodman Furnace Filter Sizes

Got a Goodman furnace at home? Knowing the filter size for your specific model is crucial. Where can you find this information you ask? Open up the furnace door, and you'll spot a data plate. This plate carries an alphanumeric code and your model number

It is crucial to select the right filter size for your furnace to run smoothly. In addition, this can make your unit last longer. Typically, you'll find sizes from 16' x 25' x 1' to 20' x 25' x 1'. 

Key Takeaways

  • Each Goodman furnace model boasts unique features, with filter sizes determined by the model number, indicating efficiency, design series, and heating input specifics.

  • For the furnace to function efficiently, prolong the system lifespan, and save energy costs, choosing the correct filter size is crucial.

  • The model numbers for Goodman filters can be found in the furnace interior, typically on a data plate or sticker, playing an essential role in selecting the appropriate filter size.

  • Frequently found Goodman furnace filter sizes by model number consist of 16' x 25' x 1', 20' x 25' x 1', and 20' x 20' x 1', with recommended replacement every 1-3 months.

  • Filters for furnaces might have higher initial costs but can boost your system’s performance and extend its lifespan, providing cost savings in the long run.

Goodman Furnace Models

With a wide selection, ranging from GMEC96 to GMVM97, Goodman furnaces offer various specifications. Each model showcases unique features, including distinct filter sizes. Once familiar with model names, discerning their details becomes straightforward.

Efficiency ratings differ from one model to another and fluctuate between 80% and 98%. However, over time, these offer the benefit of reduced energy consumption.

Warranties also vary per Goodman model. Commonly, warranties include a 10-year parts limited warranty along with a lifetime heat exchanger limited warranty. Such warranties safeguard your investment, ensuring support if anything unexpectedly fails. Crucially, knowledge of your furnace's model becomes paramount when selecting the accurate filter.

Importance of Correct Filter Size

With the proper dimensions for your Goodman furnace, you can enjoy efficient functioning and durability. 

Four reasons illustrate the importance of acquiring the right furnace filter size:

  1. Filter Efficiency: Ill-fitting filters compromise their ability to trap pollutants, leading to inferior indoor air quality.

  2. System Lifespan: More dirt in the system due to inappropriate filters can cause faster wear and tear on your furnace, hence reducing its life expectancy.

  3. Maintenance Schedule: Your unit's maintenance routine includes regular filter replacements. Wrong sizes may necessitate more frequent replacements, increasing costs unnecessarily.

  4. Energy Consumption: Furnaces with improper filters have to work harder, causing your energy use to skyrocket.

Locating Goodman Model Numbers

Identifying your Goodman furnace model number is a simple process crucial for ensuring the correct filter size, thus maintaining its efficiency and longevity.

Initially, locate the model number placement on your Goodman furnace. Typically, this number is inside the unit. To access the interior, removal of the furnace door is necessary; this task requires no special tools.

After removing the door, find a data plate or sticker, usually located on the left side or bottom of the interior. This plate contains various details, including the model number. Starting with letters and followed by various numbers, this alphanumeric code aids in acquiring the right filter size.

Keep this model number handy for future reference, especially when purchasing replacement filters. The correct model number ensures accurate filter size for your Goodman furnace.

Deciphering Goodman Model Number Codes

Decoding Goodman model numbers may initially seem complex, but this understanding is vital for choosing the right furnace filter size. These codes provide crucial insights into the product's specifications and features.


- The initial two characters denote the unit type. For example, 'GM' stands for gas furnaces. 

- These digits indicate the performance rating in AFUE (Annual Fuel Utilization Efficiency). 

- Subsequent pairs of characters, generally numbers, reveal the design series. 

- Final numbers show the heating input in BTUs per hour.


Through these decoding methods, a comprehensive understanding of your Goodman furnace and its requirements can be achieved. Each character in the model number, far from being random, plays a pivotal role in defining the product.

Keep this guide within reach next time you need to check your Goodman model number. Remember, proper interpretation of these codes is crucial for selecting the right furnace filter size, ensuring your Goodman furnace operates optimally and lasts longer.

Common Goodman Furnace Filter Sizes

After interpreting your Goodman furnace model number, knowing the frequently utilized filter sizes becomes your next step. Various sizes exist for these filters, tailored to fit different models and their specific airflow needs. Common dimensions are 16' x 25' x 1', 20' x 25' x 1', and 20' x 20' x 1'. You can use these numbers as a reference when shopping for the correct-sized replacements.

Consider filter lifespan as well. Most Goodman furnace filters require a replacement every 1-3 months, this depends on usage rates and air quality. Initial costs for longer-lasting filters may be higher, but fewer replacements could lead to cost savings over time.

In terms of cost comparisons, prices for Goodman filters fluctuate based on size and type. Filters with high efficiency can have a higher cost, however, their superior filtration ability can positively impact furnace effectiveness and longevity.

Frequently Asked Questions

Can I Use a Different Brands Filter for My Goodman Furnace?

Yes, however, this can affect compatibility and efficiency. You should go for a better alignment of the new filter's specifications with your furnace to ensure peak performance.

How Often Should I Replace My Goodman Furnace Filter?

Consider replacing your Goodman furnace filter every quarter. However, the lifespan of such filters might vary based on usage and quality of air. Look for signs of replacement, such as a higher energy bill or reduced heating efficiency.

What's the Consequence of Using a Wrong-Sized Filter in My Goodman Furnace?

Incorporating an incorrect filter size into your Goodman furnace results in substandard filtration, letting grime infiltrate. Such a situation initiates gradual deterioration of your heating system, culminating in reduced longevity and diminished functionality of your furnace.

Where Can I Buy Goodman Furnace Filters?

Online retailers or HVAC suppliers often stock Goodman furnace filters. Filter pricing comparisons can help ensure you get the best deal. High availability is typical for Goodman filters.

Does Goodman Offer Reusable or Washable Furnace Filters?

Indeed, Goodman provides furnace filters that can be washed and reused. This choice is environmentally friendly, as it simplifies filter upkeep - just clean them at regular intervals instead of discarding them every few months.


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Pamela Endreson
Pamela Endreson

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