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About Gas Furnaces

Stay warm all winter with high-quality gas furnaces from Same Day Supply. We offer a wide selection of Goodman gas furnaces designed for dependable performance, energy efficiency, and long-term reliability. Whether you're replacing an older furnace or installing a new HVAC system, you'll find models ranging from standard efficiency to high-efficiency 96% AFUE furnaces to fit your home's needs.

Browse by BTU output, efficiency rating, installation configuration, and more to find the right furnace for your project.

A gas furnace is the heart of many residential heating systems, delivering dependable warmth and reliable performance throughout the coldest months of the year. Modern furnaces are designed to provide consistent indoor comfort while operating more efficiently and quietly than older equipment.

Whether you're replacing a failed furnace or upgrading an aging system, selecting the right equipment is essential for long-term performance. Capacity, AFUE efficiency rating, blower configuration, venting requirements, and compatibility with your existing air conditioner or evaporator coil all play an important role in how your system performs.

Today's high-efficiency gas furnaces are engineered to reduce fuel consumption while maintaining even temperatures throughout your home. Features like variable-speed blowers and multi-stage heating can improve comfort, reduce operating costs, and provide quieter operation compared to older single-stage equipment.

Choosing the correct furnace involves more than selecting the proper BTU output. Your home's size, insulation, ductwork, local climate, and heating demands should all be considered to ensure the equipment is properly sized. A professionally selected furnace will provide more reliable comfort, improved efficiency, and a longer service life.

Whether you're installing equipment in a new home or replacing an existing heating system, our selection of residential gas furnaces includes trusted HVAC brands known for dependable performance and lasting reliability. Browse our collection below to find the right furnace for your home or next installation project.

Choosing the Right Gas Furnace

When selecting a new gas furnace, there are several factors to consider beyond heating capacity.

AFUE

Higher AFUE ratings convert more fuel into usable heat, helping reduce energy costs.

BTU Output

Proper furnace sizing is essential for comfort and efficiency. Oversized or undersized equipment can reduce performance and increase operating costs.

Installation Configuration

Depending on your home, you may need an upflow, horizontal, or downflow configuration.

Compatibility

Many homeowners replace their furnace together with an evaporator coil and outdoor air conditioner to maximize efficiency.

Feature 80% AFUE 96% AFUE
Efficiency Good Excellent
Venting Metal PVC
Energy Savings Standard Higher
Best For Mild climates Cold climates

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Quick Questions at a glance

Frequently Asked Questions About HVAC Equipment

What is HVAC equipment?

HVAC equipment includes the heating, ventilation, and air conditioning components that work together to keep your home comfortable year-round. Depending on your system, this may include air conditioners, heat pumps, gas furnaces, electric furnaces, air handlers, evaporator coils, packaged units, and complete split systems.

What is the difference between an air conditioner and a heat pump?

An air conditioner is designed to cool your home and works with a furnace or air handler to distribute conditioned air. A heat pump provides both heating and cooling by transferring heat between your home and the outdoors, making it an energy-efficient option in many climates.

What is a split system?

A split system separates the indoor and outdoor components of an HVAC system. The outdoor unit contains the compressor and condenser, while the indoor equipment typically includes an evaporator coil, furnace, or air handler. Split systems are the most common type of residential HVAC system.

What is a packaged HVAC unit?

A packaged unit combines all major heating and cooling components into a single outdoor cabinet. Packaged systems are commonly used when indoor installation space is limited or for certain residential and light commercial applications.

How do I choose the right HVAC system for my home?

The right system depends on your home's size, insulation, local climate, ductwork, energy efficiency goals, and budget. A qualified HVAC contractor can perform a proper load calculation to determine the correct equipment size and configuration for your home.

What size HVAC system do I need?

System size is based on more than square footage alone. Factors such as insulation, window placement, ceiling height, and regional climate all affect the heating and cooling requirements of a home. Proper sizing helps maximize comfort, efficiency, and equipment lifespan.

What do SEER2 and AFUE mean?

SEER2 (Seasonal Energy Efficiency Ratio 2) measures the cooling efficiency of air conditioners and heat pumps. Higher SEER2 ratings generally indicate greater energy efficiency. AFUE (Annual Fuel Utilization Efficiency) measures how efficiently a gas furnace converts fuel into usable heat. Higher AFUE ratings typically result in lower heating costs.

Should I replace my entire HVAC system or just one component?

In some situations, replacing a single component is appropriate. However, if your existing equipment is older or incompatible with newer efficiency standards, replacing the complete system may improve performance, reliability, and energy savings. Matching indoor and outdoor components is important for optimal operation.

How long does HVAC equipment typically last?

Most residential HVAC systems last between 10 and 20 years, depending on the equipment type, maintenance history, installation quality, and operating conditions. Routine maintenance and regular filter changes can help extend the life of your system.

Can I install HVAC equipment myself?

Most residential HVAC equipment should be installed by a licensed HVAC professional. Proper installation ensures safe operation, maximum efficiency, manufacturer warranty compliance, and adherence to local building codes.

How often should HVAC equipment be serviced?

Most manufacturers recommend professional maintenance at least once a year. Systems that provide both heating and cooling, such as heat pumps, often benefit from seasonal maintenance before both the cooling and heating seasons.

How often should I replace my air filter?

Most standard 1-inch filters should be checked monthly and replaced every 1 to 3 months, depending on household conditions. Homes with pets, allergies, or higher dust levels may require more frequent filter changes to maintain proper airflow and indoor air quality.

Does higher efficiency equipment save money?


Higher efficiency HVAC equipment typically consumes less energy, which can reduce monthly utility costs. While high-efficiency systems may have a higher upfront cost, many homeowners recover that investment over time through lower energy bills and improved comfort.

Do you sell complete HVAC systems?

Yes. Depending on the equipment category, complete systems may include matched indoor and outdoor components designed to work together. Individual replacement components, including furnaces, air conditioners, heat pumps, air handlers, and evaporator coils, are also available.