90k BTU 96% AFUE Variable Speed MrCool Signature Gas Furnace – Upflow/Horizontal – 21" Cabinet
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Achieve powerful, energy-efficient, and environmentally responsible home heating with the 90k BTU 96% AFUE Variable Speed MrCool Signature Gas Furnace (Model MGM96SE090C4XA) — proudly available from MRCOOL DIY Direct, the USA’s most trusted MRCOOL dealer.
Built with precision engineering and Low NOx emissions technology, this MrCool Signature Gas Furnace delivers both exceptional performance and reduced environmental impact. Boasting a 96% AFUE efficiency rating, it ensures that nearly every bit of fuel is converted into clean, consistent heat — reducing utility costs while keeping your home cozy.
Housed in a compact 21-inch cabinet, this model is ideal for attics, closets, or crawl spaces, making installation simple even in tight spaces. With upflow and horizontal airflow options, the unit provides installation flexibility for a variety of HVAC configurations. The high-efficiency, variable-speed ECM blower motor ensures quiet operation, improved air circulation, and year-round comfort for spaces up to 1,800 square feet.
This MrCool 90k BTU furnace features a durable aluminized steel primary heat exchanger for long-term reliability and inshot burners for smooth ignition. It’s LP conversion compatible, offering propane heating capability when natural gas isn’t available. Certified by AHRI and ETL, this furnace meets strict performance and safety standards — delivering peace of mind along with comfort.
🌟 Product Highlights
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✅ 90,000 BTU heating capacity – ideal for homes up to 1,800 sq. ft.
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✅ 96% AFUE efficiency rating – maximize heat, minimize energy waste
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✅ Variable-speed, high-efficiency blower motor for quiet performance
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✅ Low NOx emissions – eco-friendly, cleaner fuel combustion
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✅ Compact 21" cabinet fits attics, closets, or crawl spaces
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✅ Multi-position design – upflow or horizontal installation
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✅ Durable aluminized steel heat exchanger extends unit life
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✅ Optional LP conversion kit available for propane systems
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✅ AHRI Certified & ETL Listed for verified safety and efficiency
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✅ 10-Year Parts Warranty and Lifetime Heat Exchanger Warranty
⚙️ Technical
| Specification | Details |
|---|---|
| Model | MGM96SE090C4XA |
| Brand | MRCOOL |
| Series | Signature |
| BTU Output | 90,000 BTU |
| AFUE Rating | 96% |
| Fuel Source | Natural Gas (LP Kit Optional) |
| Cooling Compatibility | Up to 4 Ton |
| Blower Motor | Variable-Speed, High-Efficiency ECM |
| Gas Valve | Single Stage |
| Voltage | 120V |
| Phase | 1-Phase |
| Installation Type | Upflow, Horizontal |
| Vent Connection | 2" or 3" PVC |
| Exhaust Pipe | PVC |
| Coverage Area | 1,500–1,800 sq. ft. |
| Heat Exchanger | Aluminized Steel |
| Max Overcurrent Protection | 15 amps |
| Dimensions (H × L × W) | 33" × 29" × 21" |
| Weight | 152 lbs |
| Certifications | AHRI Certified, ETL Listed |
| Warranty (Registered) | 10-Year Parts, Lifetime Heat Exchanger |
| Warranty (Unregistered) | 5-Year Parts, 20-Year Heat Exchanger |
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MRCOOL SIGNATURE SERIES BUYING GUIDE
How to Choose the Right MRCOOL Signature Series TruInverter System
The MRCOOL Signature Series TruInverter systems are engineered for high-performance heating and cooling in residential and light commercial applications. With advanced inverter technology, R-454B refrigerant, and durable construction, these systems deliver consistent comfort, improved efficiency, and reliable operation in extreme conditions. Use this guide to compare system sizes, performance capabilities, and installation requirements so you can confidently select the right system for your space.
MRCOOL Signature Series TruInverter HVAC System Buying Guide
The MRCOOL Signature Series TruInverter heat pump systems are designed for homeowners and professionals who need high-performance, energy-efficient HVAC solutions for year-round comfort. Unlike traditional single-stage systems, these inverter-driven systems continuously adjust output based on real-time demand, delivering more consistent indoor temperatures and improved energy efficiency.
One of the key advantages of the Signature Series is its ability to operate in extreme conditions. These systems are engineered to provide reliable cooling in high outdoor temperatures and maintain heating performance in low ambient environments, making them ideal for a wide range of climate zones.
Each system is factory-charged with R-454B refrigerant, a next-generation solution that improves heat transfer efficiency while reducing environmental impact compared to older refrigerants. Combined with advanced compressor technology, this results in lower energy consumption and long-term operational savings.
When selecting a MRCOOL Signature Series system, it is important to consider system size (tonnage), square footage, insulation quality, and climate conditions. Available options range from 2 ton to 5 ton systems, making them suitable for everything from smaller homes to large residential and light commercial applications.
These systems are designed for professional installation and are compatible with standard 24V thermostats, offering flexibility for both new construction and system replacement projects. With durable construction, quiet operation, and service-friendly design, the MRCOOL Signature Series provides a reliable, long-term HVAC solution built for real-world performance.
Frequently Asked Questions
What size MRCOOL Signature Series system do I need?
A: System size depends on square footage, insulation, ceiling height, and climate zone. A properly sized system ensures optimal efficiency, performance, and long-term reliability.
What is TruInverter technology and why does it matter?
TruInverter technology allows the system to continuously adjust compressor speed instead of cycling on and off. This results in more consistent temperatures, improved energy efficiency, quieter operation, and reduced wear on components.
Can MRCOOL Signature Series systems handle extreme temperatures?
A: Yes. These systems are engineered to operate in both high heat and low ambient conditions, providing reliable cooling during extreme summer temperatures and consistent heating in cold climates.
Is professional installation required for Signature Series systems?
A: Yes. Unlike DIY mini splits, Signature Series systems are designed for professional installation to ensure proper sizing, airflow design, refrigerant handling, and electrical setup.
What are the benefits of an inverter heat pump vs a traditional HVAC system?
Inverter heat pumps provide better efficiency, more consistent comfort, lower energy costs, and longer system lifespan compared to traditional single-stage systems that frequently cycle on and off.
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4700+ Verified Reviews
Comfort That Speaks for Itself
See why homeowners and pros alike trust MRCOOL DIY systems to deliver comfort, savings, and easy installation.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
MRCOOL Signature Series System Size Comparison
Choosing the right system size is critical for performance, efficiency, and long-term reliability. Use the chart below to compare MRCOOL Signature Series TruInverter systems and find the best fit for your space.
| System Size | BTU Capacity | Recommended Coverage | Best For | Common Applications |
|---|---|---|---|---|
| 2 Ton | 24,000 BTU | 1,000 – 1,200 sq ft | Smaller homes / tight layouts | Condos, small houses, additions |
| 3 Ton | 36,000 BTU | 1,200 – 1,800 sq ft | Standard residential homes | Single-family homes, mid-size layouts |
| 4 Ton | 48,000 BTU | 1,800 – 2,500 sq ft | Larger homes / open floor plans | Large houses, multi-level homes |
| 5 Ton | 60,000 BTU | 2,500+ sq ft | High-demand / large spaces | Large homes, shops, light commercial |
Note: These sizing estimates are general guidelines. Proper HVAC sizing should always account for insulation, ceiling height, windows, climate zone, and overall building design. For best results, consult a licensed HVAC professional.
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