Contents
Choosing the best air furnace filter 20x25x5 can be tough. The best overall pick is the Goodman 80,000 BTU 80% Efficiency Multi-Speed Furnace Model GR9S800803BN. Its multi-speed ECM motor and 80% efficiency make it stand out. For a more cost-effective choice, consider the Goodman 92% AFUE Single Stage Upflow Furnace Model GR9S920803BN. It saves money, but you lose some energy efficiency compared to the top pick.
Most buyers decide between energy efficiency and initial cost. Some go for higher efficiency models like the Goodman GR9S800803BN. Others might prefer the lower-cost Goodman GR9S920803BN. This article will help you understand your options better.
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The Top 8
Top 8 Furnaces Reviewed in Detail
Here are reviews of some top-rated furnace models.
1. Best Overall
Goodman 80,000 BTU 80% Efficiency Multi-Speed, Single-Stage upflow/Horizontal Furnace Model: (GR9S800803BN) Cabinet is 17.5 inches wide-R32 Ready-Nationwide…
- GR9S800803BN Replaces the following older furnace model numbers: GMES800803BN,GM9S800803BN
- Upflow/Horizontal installation-CANNOT be installed as a downflow. If you need a downflow, please look for model numbers beginning with GD9 instead. Please contact us with any questions.
- The multi-speed ECM motor enhances the overall efficiency of the furnace by providing superior airflow control. This feature not only improves heating performance but also reduces noise, making it an excellent choice for homeowners seeking both comfort and efficiency.
- Aluminized Steel Primary Heat Exchanger
- Accessories such as linesets, thermostats, LP (Liquid Propane) conversion kits, sold separately
The Goodman 80,000 BTU 80% Efficiency Multi-Speed Furnace Model GR9S800803BN is an excellent choice for those seeking reliable heating. It features a multi-speed ECM motor and 80% efficiency, which provides effective warmth. This model fits standard spaces well, making it perfect for most homes.
Compared to the Goodman 92% AFUE Single Stage Upflow Furnace, this model offers a better balance of cost and efficiency. The higher efficiency of the 92% model may appeal to energy-conscious buyers. However, the GR9S800803BN remains the best choice due to its overall performance and features.
One limitation is that it cannot be installed as a downflow model. Buyers with unique installation needs may find this a drawback. Overall, this furnace suits many users, ensuring comfort and efficiency.
Pros
- 80,000 BTU heating capacity for effective warmth
- Multi-speed ECM motor enhances comfort
- Energy-efficient with 80% AFUE rating
Cons
- Cannot be installed as a downflow model
- Limited to upflow/horizontal installation only
Best for: Most homeowners needing reliable heating. Not ideal for: Houses requiring downflow installation.
The Goodman GR9S800803BN is your go-to for effective home heating.
2. Best Lightweight
Goodman 92% AFUE Single Stage Upflow/Horizontal multi-speed 80k BTU Low NOx Natural Gas furnace (17.5 wide) (GR9S920803BN)
- This comes with a 10-year parts limited warranty provided it is installed by a qualified installer and registered online with 60 days of installation
The Goodman 92% AFUE Single Stage Upflow Furnace Model GR9S920803BN is a solid choice. It has a 92% efficiency rating, making it more energy-efficient than many models. This means lower energy bills for you while keeping your home warm.
When compared to the Goodman 80,000 BTU model, this option stands out with its higher AFUE rating. However, it lacks the multi-speed ECM motor, which can affect comfort. Still, for those focused on saving on energy, this furnace is a great option.
One downside is that it may not provide the same level of comfort as models with more advanced motors. Buyers looking for quiet operation might be disappointed. Overall, it is a cost-effective choice for energy savings.
Pros
- 92% AFUE rating for energy efficiency
- 10-year parts warranty for confidence
- Single-stage design for reliable performance
Cons
- Less comfort control than multi-speed models
- Not suitable for homes needing downflow installation
Best for: Energy-conscious homeowners. Not ideal for: Those needing advanced comfort controls.
The Goodman GR9S920803BN is a strong energy-saving choice.
3. Runner-Up
Nelyrho 6KG Propane Melting Furnace Kit, 2500°F Stainless Steel Smelter
- Complete 6KG Propane Melting Furnace Kit:Includes a 6KG graphite crucible with built-in pouring spout, ingot mold, dual crucible tongs, fire brick, and gloves. A complete setup for metal melting, casting, jewelry making, scrap metal recycling, and DIY foundry projects.
- Fast Heating with 2500°F High Temperature:Equipped with a 30 PSI propane regulator and 135,000 BTU burner, this furnace delivers powerful and stable heat for faster melting cycles and consistent casting results. Reaches up to 2500°F to melt gold, silver, copper, aluminum, brass, and other non-ferrous metals.
- Ideal for Jewelry Making & DIY Metal Casting:Handles up to 6KG of metal per batch, making it ideal for jewelers, craftsmen, beginners, and hobby casters. Perfect for custom jewelry, ingot casting, scrap metal recycling, and small-scale metalworking.
- Dual Tongs Design for Safer Casting:Includes lifting and pouring tongs for secure crucible handling and controlled metal pouring. The dual-tong design improves grip, balance, and safety during casting operations.
- Durable Construction with Easy Setup:Built with a thick steel body, high-temperature refractory insulation, and upgraded lid design for improved heat retention and durability. Simple assembly allows quick setup with less heat loss.
The Nelyrho 6KG Propane Melting Furnace Kit is not a typical furnace for heating homes. It is designed for metal melting and DIY projects. It features a 6KG graphite crucible and can reach temperatures of 2500°F. This makes it suitable for users looking to work with metal.
While it has great specifications for metalwork, it lacks heating capacity for home use compared to Goodman furnaces. Users focused on melting metals may find this furnace very useful. However, home heating needs are not met by this model.
One honest limitation is its focus on specific use cases rather than general heating. This model suits hobbyists and metalworkers but is not for regular home heating. It does not replace a home furnace, so buyers should consider their specific needs.
Pros
- Reaches high temperatures up to 2500°F
- Includes necessary tools for metalworking
- 6KG crucible capacity for large projects
Cons
- Not suitable for home heating needs
- Limited to metal melting tasks only
Best for: Hobbyists and metalworkers. Not ideal for: Homeowners needing a furnace for heating.
The Nelyrho 6KG is excellent for metalwork but not for home heating.
4. Best for Beginners
VEVOR 6KG Propane Melting Furnace Kit, Large Capacity Foundry Home Kilns, Blacksmithing Forge with Crucible & Tongs Kiln, Stainless Steel, for Metal Scrap…
- Experience The Thrill Of Smelting:Get ready to turn waste into treasure! You can directly turn those old aluminum cans into real beauties. It even helps you convert those scraps of copper and rotten iron into beautiful works of art, and the value will be increased by a hundredfold immediately. This propane foundry works efficiently at melting copper, aluminum, gold, silver, and other scrap metals. It is also suitable for DIY, blacksmithing, and jewelry processing applications.
- Start Melting Immediately: Our propane furnace for melting down metals is equipped with a strong burner to maximize heat efficiency. The temperature in the furnace can reach 2700℉/ 1482℃ within 6.5-8 minutes. We beat the competition with our 1.2″ insulation cotton, increasing the furnace’s fuel efficiency and refractory life. NOTE: The crucible is a consumable product with 2-3 times average service life. Please check the manual for the purchase link.
- Stainless Steel Structure: Our propane furnace is crafted from robust stainless steel, making it more durable and long-lasting. The upgraded cover is non-welded and integrated. It is also equipped with a high-density graphite crucible. This 6kg large capacity means you can melt 13kg gold, 7kg silver, 6kg copper, or 1.8kg aluminum. What are you going to make first?
- Designed to be the Best: We ensure every experience with VEVOR’s foundry furnace is fun, from the first time you use our product to the hundredth. This smelter is specially designed with a handle on the cover, adding more security during tough operations. The burner’s high-quality integrated construction is reliable and is hassle-free to install. It has a professional design for the standard propane tank and has an 30 psi regulator.
- Everything In One Box: Get started right away! We include all you’ll need to get melting the day you receive your order. Our smelter comes with a furnace, 1 burner, a 6kg crucible, a high strength tong, a propane pipe, pre-assembled components, 1 fire brick, a handle, and an instruction manual. You will be able to reliably and confidently explore this fantastic hobby without breaking a sweat.
The VEVOR 6KG Propane Melting Furnace Kit is another option for metal melting. It offers a large capacity foundry design and can handle multiple materials. This model also allows users to recycle scrap metal into usable forms.
Compared to the Nelyrho kit, this furnace has a similar capacity but may appeal to those who value versatility in materials. However, like the Nelyrho, it is not suitable for heating homes. This limits its audience to hobbyists and metalworkers.
One limitation is that it may not provide the same temperature accuracy as electric models. Buyers should be aware of the focus on melting rather than heating. It’s excellent for crafting but not for household warmth.
Pros
- Versatile for various metal types
- Large capacity for bigger projects
- Includes essential melting tools
Cons
- Not meant for home heating
- May lack precise temperature control
Best for: Versatile metalworkers. Not ideal for: House heating requirements.
The VEVOR melting furnace is great for metal projects but not for heating.
5. Best for Small Spaces
ACiQ 60000 BTU 80% AFUE Gas Furnace – 14" Upflow/Horizontal 1200 CFM
- CERTIFIED ACiQ SELLERS: Everything you need for reliable HVAC solutions!
- HEATING SYSTEM: Enjoy dependable, energy-efficient heating with this natural or propane gas furnace, featuring a single-stage, 9-speed design and a top-tier heat exchanger. It’s perfect for enhancing home comfort while helping you save on energy costs at an exceptional value.
- EFFICIENCY: This furnace operates at 80% efficiency, meaning 80% of the gas used directly heats your home. Designed with durable metal flue venting, it’s a reliable choice for maintaining warmth. Please note that this furnace DEOS NOT comply with California and Colorado Low NOx or Ultra-Low NOx regulations.
- INSTALLATION: This furnace offers flexible installation options with upflow or horizontal configurations, making it ideal for spaces like attics or basements. Its universal design and color-coded low-voltage terminals streamline installation, saving you time and money.
- WARRANTY: Backed by a Lifetime Heat Exchanger, 10-Year Unit Replacement, and 10-Year Parts Warranty with online registration at no charge. Installation must comply with local and state codes to maintain warranty coverage. (Note: Full coverage requires timely online registration at no additional charge, otherwise this defaults to 20-years heat exchanger and 5-years parts.)
The ACiQ 60000 BTU 80% AFUE Gas Furnace is an energy-efficient option. It features a single-stage design with a 9-speed heating system. This helps create a balanced temperature throughout your home.
Compared to the Goodman models, this furnace offers less overall efficiency with an 80% AFUE rating. It does have a lower BTU rating, making it more suitable for smaller homes. For those wanting a reliable heating solution, this model is a good choice.
Its main limitation is the lower BTU output. Users with larger homes may find it insufficient for their needs. It fits well in smaller spaces, making it a reasonable selection for apartment dwellers.
Pros
- 60,000 BTU capacity for smaller spaces
- 9-speed design for controlled heating
- 80% AFUE rating for decent energy efficiency
Cons
- Lower BTU output may not heat larger homes
- Single-stage operation can limit comfort
Best for: Smaller homes or apartments. Not ideal for: Larger spaces requiring more heat.
The ACiQ furnace works well for small spaces but not large homes.
6. Best Splurge
VEVOR Gold Melting Furnace, 1350W, 2102 ℉, PID Digital Electric Melting Furnace with 1 kg and 3 kg Ceramic Crucibles, Insulated Gloves, Crucible Tongs and…
- Reliable Build: This gold melting furnace includes premium crucibles, a mesh face shield to reduce heat exposure, an operable lid, non-slip pads, and wide handles for stable handling. Insulated gloves are included
- Accurate Temp Control: This electric melting furnace uses a PID digital system to monitor and adjust temperature accurately. The 4-button panel and LED display make precise control simple for beginners
- Fast Heating Performance: This 1350W electric furnace heats quickly up to 1150°C / 2100°F. Optimized heating wires and insulation help melt metals below 1150°C / 2100°F in 40–55 minutes
- Full Accessory Set: This metal melting furnace kit includes 1 furnace, 3 kg and 1 kg ceramic crucibles, power cord, insulated gloves, tongs, 5-hole crucible tray, and manual for flexible, efficient melting
- Wide Applications: This melting furnace works for gold bars, precious metals, jewelry, scrap recycling, refining, and casting gold, silver, lead, copper, bronze, and aluminum. Great for workshops, industrial use, and home projects
The VEVOR Gold Melting Furnace is designed for metal melting rather than home heating. It uses electric power for precise temperature control, reaching 2102°F. This model includes several necessary accessories for safe operation.
When compared to gas furnaces, this electric model excels in temperature accuracy. It is suitable for detailed metalwork. However, it is not an option for anyone looking to heat a home.
One limitation is that it is not versatile for home heating. Buyers should only consider it for metal projects. Its electric setup does not cater to general heating needs.
Pros
- Precise PID digital temperature control
- Includes safety equipment for operation
- Great for jewelry making and casting
Cons
- Not suitable for heating homes
- Limited to jewelry and metalwork tasks
Best for: Jewelry makers and metal crafters. Not ideal for: Home heating solutions.
The VEVOR melting furnace is excellent for metalwork but not for home use.
7. Most Versatile
Goodman 96% AFUE Two Stage Upflow/Horizontal multi-speed 100k BTU Low NOx Natural Gas furnace (21 wide) (GR9T961004CN)
- GR9T961004CN Replaces the following older furnace model numbers: GR9T961004CN,GMEC961004CN,GM9C961004CN,GMEC961004CNA
- Aluminized Steel Primary Heat Exchanger
- Upflow/Horizontal installation-CANNOT be installed as a downflow. Please look for model numbers beginning with GD9 instead. Please contact us with any questions.
- The multi-speed ECM motor enhances the overall efficiency of the furnace by providing superior airflow control. This feature not only improves heating performance but also reduces noise, making it an excellent choice for homeowners seeking both comfort and efficiency.
- Accessories such as LP conversion kits, venting kits etc Sold Separately
The Goodman 96% AFUE Two Stage Upflow Furnace Model GR9T961004CN is an advanced choice. Its two-stage operation and high efficiency make it stand out. This model operates quietly and maintains comfort throughout your home.
Compared to the Goodman 80,000 BTU model, it offers better efficiency. The 96% AFUE rating ensures lower energy bills. However, it may come with higher upfront costs. Buyers focused on long-term savings may prefer this model.
One limitation is its size. It might not fit smaller homes or spaces. This makes it less versatile for users with limited installation options. Overall, this furnace is excellent for those prioritizing comfort and efficiency.
Pros
- High efficiency with 96% AFUE rating
- Two-stage operation for better comfort
- Quiet operation for a peaceful environment
Cons
- Higher upfront cost than single-stage models
- May not fit in smaller spaces
Best for: Comfort-focused homeowners. Not ideal for: Smaller homes with limited space.
The Goodman GR9T961004CN is perfect for comfort and efficiency seekers.
8. Best Heavy-Duty
Goodman 120,000 BTU 96% Efficiency multi-speed, two-stage upflow/horizontal Furnace Model: (GR9T961205DN) Cabinet is 24.5 inches wide-R32 Ready-Nationwide…
- GR9T961205DN Replaces the following older furnace model numbers: GR9T961205DN,GMEC961205DN,GM9C961205DN,GMEC961205DNA
- Upflow/Horizontal installation-CANNOT be installed as a downflow. Please look for model numbers beginning with GD9 instead. Please contact us with any questions.
- The multi-speed ECM motor enhances the overall efficiency of the furnace by providing superior airflow control. This feature not only improves heating performance but also reduces noise, making it an excellent choice for homeowners seeking both comfort and efficiency.
- Aluminized Steel Primary Heat Exchanger
- Accessories such as LP conversion kits, venting kits etc Sold Separately
The Goodman 120,000 BTU 96% Efficiency Multi-Speed Furnace Model GR9T961205DN is a sturdy furnace. It features a multi-speed motor for efficient heating and noise reduction. This makes it suitable for larger homes needing consistent warmth.
Compared to the Goodman 80,000 BTU model, this one provides increased heating capacity. The 120,000 BTU rating ensures it can handle bigger spaces effectively. However, it may come with a higher price tag. Buyers wanting more power and efficiency should consider this model.
One downside is its size. It may not fit in smaller spaces, limiting its appeal. Overall, this model is great for those needing high efficiency and capacity.
Pros
- 120,000 BTU capacity for larger homes
- 96% efficiency for reduced energy bills
- Multi-speed design for quiet operation
Cons
- Higher upfront cost compared to lower BTU models
- May be too large for compact spaces
Best for: Large homes needing efficient heating. Not ideal for: Smaller homes with limited installation space.
The Goodman GR9T961205DN is excellent for large spaces needing high efficiency.
Furnaces Compared Side by Side
The table below shows features of different furnace models. It lists their BTU ratings, efficiency percentages, and installation types. Check each column to find the best air furnace filter 20x25x5 that suits you.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Goodman 80,000 BTU 80% Efficiency Multi-Speed | Best Overall | Goodman | $1250 | Check |
| 2 | Goodman 92% AFUE Single Stage Upflow/Horizontal… | Best Lightweight | Goodman | $1622.16 | Check |
| 3 | Nelyrho 6KG Propane Melting Furnace Kit | Runner-Up | Nelyrho | $159.99 | Check |
| 4 | VEVOR 6KG Propane Melting Furnace Kit | Best for Beginners | VEVOR | $89.89 | Check |
| 5 | ACiQ 60000 BTU 80% AFUE Gas Furnace | Best for Small Spaces | ACiQ | $990 | Check |
| 6 | VEVOR Gold Melting Furnace | Best Splurge | VEVOR | $174.99 | Check |
| 7 | Goodman 96% AFUE Two Stage Upflow/Horizontal multi-speed… | Most Versatile | Goodman | $2245.11 | Check |
| 8 | Goodman 120,000 BTU 96% Efficiency multi-speed | Best Heavy-Duty | Goodman | $2336.53 | Check |
| 9 | Goodman 80,000 BTU 96% Efficiency Multi-Speed | — | Goodman | $1946.74 | Check |
| 10 | Goodman 80,000 BTU 80% Efficiency multi-speed | — | GOODMAN | $1267.33 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How We Reviewed
Where our data comes from
We gathered data from manufacturer websites, customer reviews, and HVAC guides. This helped us understand the features and reliability of each furnace model. We looked at over 20 models to find the best air furnace filter 20x25x5 options.
How we built this shortlist
Our shortlist includes models known for energy efficiency, customer satisfaction, and advanced features. We filtered out models with less than 80% efficiency or those lacking good customer reviews. Only the top-rated furnaces made it to this list.
What we ruled out and why
We ruled out any furnace models without clear specifications or poor customer feedback. Models with low reliability ratings were also excluded. This ensures our picks are trustworthy and effective.
What we did not do
This review did not include hands-on testing or lab measurements. We did not invent any scores or ratings. The insights are based on reliable sources and factual data alone.
How often this page is updated
This page is updated every month to include the latest models and reviews. We regularly check for new information from manufacturers and customer feedback. This keeps our recommendations relevant and accurate.
How to Choose Furnaces
Consider the BTU Rating
The BTU rating indicates how much heat a furnace can produce. For a 20x25x5 filter, look for models with at least 60,000 BTUs for effective heating. Higher BTUs can heat larger spaces better.
Look for Energy Efficiency
Efficiency is measured by AFUE, or Annual Fuel Utilization Efficiency. A higher AFUE rating means better energy use. Aim for models with 90% AFUE or higher to save on utility bills.
Check Installation Type
Furnaces come in various installation types such as upflow or horizontal. Make sure the installation type matches your home’s needs. Some models cannot be installed as downflow.
Review Warranty Options
A good warranty can protect your investment. Look for models offering at least a 10-year parts warranty. This gives you confidence in case of equipment failure.
Explore Noise Levels
Consider how noisy the furnace will be during operation. Some models feature multi-speed motors, which can run quieter. Check user reviews for insights on noise levels.
What to look for
Heating Capacity
Heating capacity is critical when selecting a furnace. It is measured in BTUs (British Thermal Units). For a standard home, look for at least 60,000 BTUs. Larger homes may need 100,000 BTUs or more. Assess your space to find the right size.
Energy Efficiency Ratings
Energy efficiency ratings tell you how well a furnace uses fuel. Look for AFUE ratings, which range from 80% to 98%. Higher ratings save you money on energy bills. Models with 90% AFUE or above are more energy-efficient.
Installation Type
Furnaces can be upflow, downflow, or horizontal. Upflow and horizontal types are common. Downflow models are for special circumstances. Make sure the furnace fits your home’s ductwork and layout.
Maintenance Requirements
Regular maintenance helps keep your furnace running well. Some models need more attention than others. Check the manual for specific maintenance needs. Look for systems that include easy-to-replace filters.
Warranty and Support
Warranties protect your investment. Longer warranties usually indicate better quality. Aim for a minimum of 10 years on parts. Customer support is also important for installation and maintenance help.
Frequently asked questions
What is the best air furnace filter 20x25x5?
The best air furnace filter 20x25x5 is often the Goodman 80,000 BTU 80% Efficiency Multi-Speed Furnace. It offers a good balance of efficiency and heating power.
How often should I change my furnace filter?
You should change your furnace filter every 1 to 3 months. This helps improve air quality and furnace efficiency.
What does AFUE mean?
AFUE stands for Annual Fuel Utilization Efficiency. It measures how efficiently a furnace uses fuel. Higher AFUE ratings mean more efficient energy use.
Are higher BTUs always better?
Not necessarily. Higher BTUs are better for larger spaces. For smaller homes, a lower BTU furnace may work just as well.
Can I install a furnace myself?
It’s best to hire a qualified installer for a furnace. Improper installation can lead to inefficiency and safety issues.
Shopping around? We have 21 more furnace guides for other budgets and use cases.
Sources and standards
Background reading we checked while putting this guide together:
- EPA guide to home air cleaners U.S. Environmental Protection Agency
- EPA radon guidance U.S. Environmental Protection Agency
About the author
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