About The Author: Travis Baugh is a Digital Brand Marketing Manager for Bryant, where he creates clear, helpful content to guide homeowners through heating, cooling, and indoor air quality decisions. His goal is to empower readers with the knowledge they need to choose the right comfort solutions for their home—confidently and comfortably.
Furnace Replacement: When to Upgrade and How to Choose the Right System
By Travis Baugh | Expert Review By Seth Faber - Product Manager, Furnaces
Furnace replacement may be worth considering when your furnace is 15 or more years old, repair costs are high, or the system is no longer providing reliable, efficient comfort. A typical Bryant furnace replacement costs about $3,800–$12,000 and takes approximately 4–8 hours, depending on the installation.
Furnace replacement is the strategic process of removing an inefficient or failing heating unit and installing a modern, high-performance system. By investing in a new furnace with advanced technology, homeowners can significantly improve energy efficiency, lower monthly heating bills, and enjoy consistent, quiet warmth throughout the home. Contact your local Bryant dealer to start to the process today.
Should I Repair or Replace My Furnace?
The short answer: If your furnace is over 15 years old and facing a repair bill over $1,000, Bryant recommends considering the cost of continued repairs, the system's condition, and the potential benefits of replacement rather than relying on age alone.
Deciding whether to repair or replace your furnace depends primarily on the system's age, the cost of repairs, and its current efficiency. Bryant's furnace replacement guidance also points homeowners to the $5,000 Rule as a commonly used way to compare repair costs with the age of a furnace.
What is the $5,000 Rule?
The $5,000 Rule is a commonly used industry guideline that multiplies the age of your furnace, in years, by the estimated repair cost, in dollars. If the result exceeds $5,000, replacement may be worth considering based on the furnace's condition, efficiency, and expected remaining life.
Additional Signs It's Time to Replace Your Furnace
- Age: Your furnace is over 15–20 years old.
- Cost: The repair bill exceeds $1,000, especially for units 13 or more years old.
- Performance: You notice rising energy bills, uneven heating, or strange noises.
- Efficiency: A newer, higher-AFUE furnace may use less fuel to produce the same amount of heat
Andrew Mackey, owner of Superior Service in Lake St. Louis, Missouri, stresses the importance of considering both the age and efficiency of a furnace when deciding whether to get a furnace repair or furnace replacement. He often shares a simple rule of thumb with customers:
“If the furnace is 15 years old or more and the repair is over $1,000, we usually advise that it makes the most sense to replace the unit,” Mackey said.
How to Choose the Right Replacement Furnace
Selecting a new furnace is a foundational investment in your home's future comfort. Modern systems go well beyond simple heating—they optimize your entire indoor environment. Here are the six key factors to consider.
1. Proper Sizing and Capacity
A furnace must be correctly sized for your home's square footage and insulation level to operate reliably and efficiently.
- Too big: The unit will short-cycle (turn on and off rapidly), wasting energy and accelerating wear on key furnace parts.
- Too small: The unit will struggle to keep up on the coldest days.
A professional assessment from a qualified HVAC technician ensures your replacement system operates at peak efficiency from day one.
2. Fuel Source Options
Your local energy costs will largely dictate the best fuel source for you:
- Natural gas furnace: The most popular choice for efficiency and long-term affordability where gas lines are available..
- Electric Furnace: Often easier to install and cheaper upfront, but can carry higher monthly operating costs depending on local electricity rates. See our gas vs electric furnaces comparison.
- Oil Furnaces: Oil furnaces are a viable option in rural areas without access to natural gas, though they require regular maintenance and are subject to fluctuating fuel prices.
- Propane Furnaces: Propane furnaces are another alternative where natural gas is unavailable. Propane typically costs more than natural gas but delivers better efficiency than electric or oil units.
3. Efficiency Rating (AFUE): What Does It Mean For Your Bills?
Annual Fuel Utilization Efficiency (AFUE) is the standard measure of how efficiently a gas furnace converts fuel into usable heat.
For example, a furnace with a 95% AFUE rating converts approximately 95% of its fuel into usable heat, while the remaining energy is lost primarily through exhaust. In general, a higher AFUE rating means less fuel is wasted during operation.
- Standard Efficiency: Approximately 80% AFUE.
- High Efficiency: 90% to 98.3% AFUE.
Bryant's Evolution™ 98 Variable-Speed Modulating Gas Furnace (987M), for example, offers up to 98.5% AFUE and uses modulating operation to adjust heating output to changing conditions.
A higher AFUE rating means less wasted fuel and lower monthly energy bills. While high efficiency furnaces carry a higher upfront cost, they often pay for themselves through energy savings over time. Replacing an old 60–70% AFUE unit with a 95%+ model can drastically cut your annual heating costs.
4. Comfort Technology: Understanding Furnace Stages
Not all furnaces heat the same way. The "stage" of a furnace determines how precisely it controls temperature output:
- Single-Stage: Operates at 100% capacity whenever it's running. Affordable, but can produce noticeable temperature swings.
- Two-stage furnaces: Switches between a low and high setting. Bryant models such as the Preferred™ 97 Two-Stage Gas Furnace (927T) use two-stage operation to provide more heating-output control than a single-stage furnace.
- Modulating Furnace: Bryant's Evolution™ 98 987M uses modulating operation with 60 precise settings to more closely match heating output to the home's needs.
Explore the full range of types of furnaces to find the right fit for your needs.
5. Noise Levels
If a quiet home is important to you, prioritize models engineered for low-noise operation with variable-speed or multi-speed blowers. For example, the Bryant Evolution 987M uses variable-speed air delivery for quiet operation and even-temperature comfort, while the Legacy 811S uses an 18-speed ECM blower and QuieTech™ noise reduction system.
6. Smart and Connected Features
Bryant offers connected comfort options across its furnace lineup. The Evolution 987M can pair with an Evolution™ Connex™ System Control, while models such as the Legacy 96 Gas Furnace (916S) offer Wi-Fi®-enabled remote access through the Bryant Smart Thermostat.
Bryant's 3-Signal Furnace Replacement Check
Bryant's furnace replacement guidance can be organized around three practical signals:
- Age: Is the furnace approaching or beyond its typical service life?
- Repair: Is the cost of the needed repair significant compared with the cost of replacement?
- Performance: Is the furnace delivering the efficiency, comfort, and reliability you expect?
The $5,000 Rule can provide an additional comparison by multiplying furnace age by estimated repair cost, but it should be considered alongside the system's condition and a professional evaluation.
Why Upgrade? The Benefits of a Furnace Replacement
A modern furnace replacement doesn't just keep the heat on—it transforms your home's comfort, efficiency, and control.
- Lower energy use: Replacing an older, lower-AFUE furnace with a higher-efficiency model can reduce the amount of fuel required to produce heat.
- Consistent comfort: Technologies such as Bryant's modulating 987M and two-stage 927T provide more control over heating output than single-stage operation.
- Smart home ready: Many Bryant furnaces integrate with connected controls, allowing homeowners to manage their home's climate and schedules.
- Humidity management: Bryant's Evolution 987M includes Perfect Humidity™ technology, which can provide additional moisture removal during cooling operation when installed with a matched air conditioner or heat pump.
- Peace of Mind: Bryant furnaces include limited warranty coverage, with specific terms varying by model and registration. For example, the 987M includes a lifetime limited warranty on the heat exchanger and a 10-year parts limited warranty upon timely registration.
The Furnace Replacement Process
A standard furnace replacement involves a professional home assessment, system selection, code-compliant installation, and rigorous performance testing. Your local Bryant dealer manages the entire transition to ensure safety and peak system performance.
- Consultation: A local Bryant dealer visits your home to evaluate your current setup, insulation, and comfort needs.
- Selection: Your Bryant dealer can help you choose a model based on your home's heating requirements, budget, efficiency goals, and available fuel source.
- Installation: Professional technicians perform furnace installation to local codes, ensuring safety and peak performance.
- Testing: The installed system is tested to verify proper operation, airflow, and safe performance.
A standard furnace replacement typically takes 4 to 8 hours. Installations that require ductwork modifications or thermostat wiring updates may take up to a full day.
Bryant Furnace Replacement Options: Good, Better, Best
Bryant offers furnace models across its Evolution™, Preferred™, and Legacy™ lines, with differences in efficiency, heating stages, blower technology, controls, and humidity-management capabilities.
| Category | BEST – EVOLUTION® SYSTEM | BETTER – PREFERRED™ SERIES | GOOD – LEGACY™ LINE |
| Energy Management | Modulating Operation (987M)
Our highest efficiency models make subtle 1% adjustments up and down as conditions change to deliver comfort with much higher precision than standard or two-stage models. Two-Stage Operation (987T & 986T) Automatically chooses between low and high settings to maintain more consistent temperature and efficient operation. |
Two-Stage Operation (927T & 926T)
Automatically chooses between low and high settings to maintain more consistent temperature and efficient operation. Single-Stage Operation (926S) Helps keep operating costs low all season long. |
Single-Stage Operation (912S & 916S)
Helps keep operating costs low all season long. |
| Humidity Management | Perfect Humidity® Technology
This proprietary feature leverages multi-speed systems to enhance humidity removal. SmartEvap™ Technology Reduces indoor humidity by reducing the amount of condensate reintroduced into the air after dehumidification cycles. |
SmartEvap™ Technology
Reduces indoor humidity by reducing the amount of condensate reintroduced into the air after dehumidification cycles. |
Basic Humidity Management
Provides basic humidity removal during cooling operation. |
| Comfort Management | Evolution Connex™ Control
Our most advanced Wi-Fi®-enabled control. It can maximize efficiency by communicating with components of a complete Evolution® system. Communicating Variable-Speed Blower Communicates with the system to automatically adjust airflow, maintaining outstanding comfort through consistent temperatures and advanced humidity management. |
ecobee for Bryant Smart Thermostat
Wi-Fi-enabled smart thermostat learns your schedule for greater efficiency and comfort. Variable-Speed Blower Increased speed options allow for optimized airflow at installation and improved humidity control for excellent comfort. |
Bryant Smart Thermostat
Wi-Fi-enabled smart thermostat that offers convenient and connected comfort control. Fixed-Speed Blower Traditional, reliable performance. |
Ready For Furnace Replacement?
If your furnace is aging, requires frequent or expensive repairs, or no longer provides the comfort and efficiency you need, a replacement may be worth considering. Contact your local Bryant dealer today to find furnace replacement near me and to discover how much is a new furnace. Bryant furnace installation costs generally range from $3,800–$12,000, although your actual price will depend on the equipment, installation requirements, fuel type, efficiency, and local labor costs.
Compare Bryant Furnaces
Choose a Bryant furnace for reliable, efficient heating that keeps your home comfortable throughout the winter. Known for their durability and advanced technology, Bryant furnaces offer quiet operation, precise temperature control, and energy-saving features like variable-speed motors and two-stage heating. With a range of models to suit different home sizes and needs, Bryant furnaces are built to last and come with industry-leading warranties, providing peace of mind and long-term value for your home heating system.
Furnace Replacement FAQs
Installing a new furnace typically costs between $3,800-$12,000, depending on the type, efficiency rating, brand, and installation complexity.
Yes, replacing a 20-year-old furnace is usually worth it, as newer models offer better efficiency, reliability, and may lower your energy bills and maintenance costs.
Yes. Most furnaces last around 15–20 years, so a 25-year-old system is well beyond its prime and likely less efficient than newer models.
Multiply the furnace’s age by the estimated repair cost. If the result is more than $5,000, replacement is typically the more cost-effective choice.
Homeowners insurance doesn’t usually cover furnace replacement unless it was damaged by a covered peril, like a fire or storm. Wear and tear or age-related failures are excluded.
The best deals often come in the spring or early fall, when HVAC demand is lower and contractors may offer seasonal discounts.
Most modern replacement furnaces integrate seamlessly with smart thermostats. However, variable-speed and communicating furnaces operate best with specific smart controls (like the Evolution Connex™ Control) to maximize their efficiency and comfort features.
A standard furnace replacement typically takes 4 to 8 hours to complete. Complex installations that require ductwork modifications or thermostat wiring updates may take up to a full day.
Yes, you can replace just the furnace if your air conditioner is still in good condition and compatible with the new system. However, if both systems are older or have mismatched efficiency ratings, replacing them together may provide better performance, efficiency, and long-term value.
Look for a licensed and insured HVAC contractor with strong customer reviews, industry certifications, and experience installing the type of furnace you're considering. It's also a good idea to compare multiple estimates, ask about warranties, and verify the contractor performs a load calculation to properly size your new system.
Furnace replacement costs depend on the equipment you choose and the complexity of the installation. Higher-efficiency or modulating furnaces typically cost more than single-stage models, while labor, ductwork modifications, venting upgrades, and other installation requirements can also affect the total price.
About The Author: Seth Faber serves as Product Manager for Residential Furnaces at Bryant, where he contributes to the development of heating solutions designed for dependable operation and lasting home comfort. His work takes into account homeowner needs, advances in energy efficiency, and evolving industry standards to help support reliable residential heating.
Learn More About Furnaces
- Discover what is a heat pump vs furnace
- Explore what is a furnace
- Read our guide to furnace filters
- Learn about the importance of furnace cleaning
- Understand the ins and outs of a furnace tune-up
- Read about furnace inspections
