Contents
Choosing the best furnace for garage can be challenging. The Goodman 80,000 BTU 80% Efficiency Multi-Speed furnace is our top pick. It has a compact cabinet size of just 17.5 inches wide and a multi-speed ECM motor for better airflow. For a more budget-friendly option, the ACiQ 60,000 BTU 80% AFUE Gas Furnace is the way to go. It has a simpler design and lower BTU output, which may mean slower heating in larger spaces.
The main tradeoff here is between size and efficiency. Bigger models like the Goodman provide faster heating but take up more space. Smaller options like the ACiQ save room but may not heat as quickly. The rest of this page will guide you through various options to help you find the best furnace for your garage.
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The Top 8
Top 8 Furnaces Reviewed in Detail
Below, we will review several furnaces suited for your garage needs.
1. Editor’s Choice
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 furnace offers efficient heating with an 80% efficiency rating. It is designed for upflow or horizontal installation. The multi-speed ECM motor boosts comfort and efficiency. This model is great for those who want reliable heating at an affordable price.
Pros
Energy-efficient design with 80% AFUE. Multi-speed motor for better airflow. Compact size fits in tight spaces.
Cons
Cannot be installed as a downflow. Limited warranty options. May not be suitable for larger garages.
Best for small to medium garages needing basic heating without complex installation needs.
The Goodman 80,000 BTU furnace is a solid choice for efficient heating in smaller spaces.
2. Best for Garage
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 furnace is another strong option. It offers up to 80,000 BTUs of heating power. With a multi-speed design, it provides consistent heating. The 10-year parts warranty also adds confidence.
Pros
High efficiency with 92% AFUE. Multi-speed motor enhances comfort. Good warranty for registered installations.
Cons
Requires professional installation for warranty. Slightly higher initial cost. Limited features compared to advanced models.
Ideal for medium-sized garages that need reliable heating with a solid warranty.
The Goodman 92% AFUE furnace is a great pick for those wanting efficiency and reliability.
3. Best Premium
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 melting furnace is designed for metalworking enthusiasts. It can reach temperatures up to 2500°F. This kit includes essential tools for melting and casting. It is suitable for DIY foundry projects and small metal recycling.
Pros
High temperature capability for various metals. Complete kit includes necessary tools. Ideal for jewelry making and metal casting.
Cons
Not meant for large scale production. Requires propane fuel which may need additional safety measures. Learning curve for beginners.
Best suited for hobbyists and DIY enthusiasts who need a small melting setup.
The Nelyrho melting furnace is excellent for small projects and beginners in metalworking.
4. Best Value
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 melting furnace offers a large capacity for smelting various metals. This kit includes a crucible and tongs. It is designed for home use and scrap metal recycling. The furnace can handle multiple materials effectively.
Pros
Large capacity for bigger projects. Includes essential tools for smelting. Suitable for various metals like aluminum and copper.
Cons
May be bulky for smaller spaces. Requires propane, which can be less accessible. Learning curve for beginners.
Great for serious hobbyists and those looking to recycle metal at home.
The VEVOR melting furnace is a sturdy option for serious metalworking enthusiasts.
5. Best Budget
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 gas furnace is a reliable choice for efficient heating. With 60,000 BTUs and 80% AFUE, it performs well in homes. It has a single-stage, 9-speed design for adjustable heating. This furnace fits in tight spaces as it’s only 14 inches wide.
Pros
Compact design for tight spaces. Dependable heating system. Energy-efficient performance.
Cons
Limited heating capacity for larger areas. Single-stage operation may not provide consistent heating. Warranty terms may vary by installation.
Best for smaller garages needing efficient heating without the need for advanced features.
The ACiQ gas furnace is a reliable, compact option for efficient heating in small spaces.
6. Best Compact
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 a digital electric model. It can reach temperatures of 2102°F for melting metals. The unit comes with high-quality ceramic crucibles and safety gloves. It is suitable for melting gold, silver, and other metals.
Pros
PID digital control for precise temperature management. Includes safety equipment for handling. Well-built for long-lasting use.
Cons
Not suitable for large-scale metal melting. Requires an electric power source. May take time to reach high temperatures.
Ideal for hobbyists focusing on small metal projects like jewelry making.
The VEVOR gold melting furnace is a good option for small-scale metal melting tasks.
7. Best for Beginners
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 furnace offers high efficiency. With 100,000 BTUs, it provides powerful heating. The two-stage design ensures consistent warmth. It is also designed for upflow or horizontal installation.
Pros
High efficiency with 96% AFUE. Two-stage heating for better temperature control. Suitable for larger garages.
Cons
Requires more space for installation. Higher upfront cost compared to single-stage models. Needs professional installation for warranty.
Best for larger garages or spaces needing consistent and efficient heating.
The Goodman 96% AFUE furnace is excellent for those needing powerful and efficient heating.
8. Best Lightweight
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 furnace is a two-stage option with 96% efficiency. It is suitable for upflow or horizontal installation. This model also features a multi-speed motor for better airflow. It is a solid choice for significant heating needs.
Pros
High efficiency and powerful heating. Multi-speed motor for comfort. Good for larger spaces needing strong heating.
Cons
Requires a larger space for installation. Higher cost due to advanced features. Professional installation needed for warranty.
Great for large garages or areas requiring substantial heating.
The Goodman 120,000 BTU furnace is a strong choice for major heating demands.
Furnaces Compared Side by Side
The comparison table below lists essential features of each furnace. You can see BTU output, efficiency ratings, and installation types. Use this table to determine which furnace fits your garage the best, based on the best furnace for garage.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Goodman 80,000 BTU 80% Efficiency Multi-Speed | Editor's Choice | Goodman | $1250 | Check |
| 2 | Goodman 92% AFUE Single Stage Upflow/Horizontal… | Best for Garage | Goodman | $1622.16 | Check |
| 3 | Nelyrho 6KG Propane Melting Furnace Kit | Best Premium | Nelyrho | $159.99 | Check |
| 4 | VEVOR 6KG Propane Melting Furnace Kit | Best Value | VEVOR | $89.89 | Check |
| 5 | ACiQ 60000 BTU 80% AFUE Gas Furnace | Best Budget | ACiQ | $990 | Check |
| 6 | VEVOR Gold Melting Furnace | Best Compact | VEVOR | $174.99 | Check |
| 7 | Goodman 96% AFUE Two Stage Upflow/Horizontal multi-speed… | Best for Beginners | Goodman | $2245.11 | Check |
| 8 | Goodman 120,000 BTU 96% Efficiency multi-speed | Best Lightweight | 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, online reviews, and HVAC forums. Our sources include Goodman, ACiQ, and trusted home improvement sites. We looked at over 20 different furnace models to find the best options for garages.
How we built this shortlist
Each product on this list was chosen based on its suitability for garage use. We focused on models with high BTU outputs, efficiency ratings, and compact sizes. We prioritized models that fit typical garage dimensions and heating needs.
What we ruled out and why
We excluded units that were too large or had low BTU ratings for garage spaces. Models not rated for garage installation or those lacking safety features were also removed. Customer feedback and expert reviews helped us narrow down the list.
What we did not do
No products were tested by hand, and we did not take any lab measurements. We did not create any scores or ratings. Our insights are based strictly on data collected from reliable sources and customer reviews.
How often this page is updated
This page will be reviewed and updated every three months. We will check for new models, updated specs, and changes in consumer feedback. This ensures that the information remains accurate and relevant for readers.
What to look for
BTU Output
BTU, or British Thermal Unit, measures the furnace’s heating power. For garages, you generally want at least 30 BTU per square foot. For example, a 500-square-foot garage would need a furnace with about 15,000 BTUs. Choosing the right BTU ensures efficient heating without wasting energy.
Efficiency Ratings
The Annual Fuel Utilization Efficiency (AFUE) rating shows how efficiently a furnace uses fuel. Look for models with an AFUE of 80% or higher. Higher ratings mean more heat from less fuel, which means lower energy bills over time.
Installation Type
Furnaces can be installed in different ways: upflow, downflow, or horizontal. Most garages benefit from upflow or horizontal installations since they are easier to fit. Check your garage layout and ensure the chosen unit matches your available space.
Size and Dimensions
A furnace’s size is important for garage installation. A standard width is around 14-24 inches. Be mindful of height too, especially in low garages. Ensuring a good fit will help maintain airflow and efficiency.
Safety Features
Look for furnaces with safety features like flame rollout switches and limit controls. These features prevent overheating and fuel leaks. Having reliable safety measures will give you confidence while the furnace runs.
How to Choose Furnaces
Consider Your Garage Size
Measure your garage space before choosing a furnace. Generally, you need about 30 BTUs for each square foot. For example, a 600-square-foot garage may need a furnace with at least 18,000 BTUs. This helps ensure your garage heats effectively without overworking the unit.
Check the AFUE Rating
Always check the AFUE rating when buying a furnace. Aim for a rating of 80% or higher for good efficiency. This means the furnace converts most of its fuel into heat, saving you money on energy bills in the long run.
Choose the Right Installation Type
Furnaces come in different installation types. Upflow models are suitable for garages with ceiling space. Make sure to choose one that fits your garage layout. This ensures optimal heating and air circulation.
Understand Venting Options
Furnaces can vent via the roof or the side of your garage. Check local codes for venting requirements. Proper venting is essential to avoid harmful gas buildup and ensure safe operation.
Look for Warranty Information
Always check the warranty on your furnace. Many reliable brands offer at least a 10-year warranty on parts. Knowing you have a warranty can provide confidence and protect your investment.
Frequently asked questions
What is the best furnace for garage?
The best furnace for garage is the Goodman 80,000 BTU Multi-Speed model. It balances efficiency and compactness, making it suitable for most garage sizes.
How many BTUs do I need for my garage?
You typically need about 30 BTUs per square foot of garage space. Measure your garage size and calculate accordingly for effective heating.
What furnace size is suitable for a two-car garage?
For a two-car garage, which is usually around 500-600 square feet, look for a furnace with at least 18,000 to 20,000 BTUs. This ensures effective heating.
Can you install a furnace in a garage?
Yes, you can install a furnace in a garage. Ensure it meets safety standards and local building codes for proper installation.
Is it safe to use a gas furnace in the garage?
Yes, a gas furnace can be safe in a garage. Just ensure proper ventilation and follow installation guidelines to prevent gas buildup.
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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