Is It Cheaper To Replace Furnace And AC Together? Vital Tips

When it comes to home comfort systems, HVAC systems are a key element. Should you replace the furnace and air conditioning together or separately? Let’s look at the factors to consider.

  • The age and condition of your current units should be examined. If they’re old and not working well, replacing them together may be the most cost-effective option.
  • The size and capacity of the new systems should match your home’s square footage and heating/cooling needs. One system could overload the other, leading to temperature spikes and cold spots.
  • Modern systems offer better energy efficiency ratings such as SEER and AFUE which can lower your energy bills in the long run.
  • If you replace only one system, installation costs may rise if you need to add another unit or upgrade existing equipment later.
  • If there are any problems in your HVAC system with certain components or parts, it may be more cost-effective to replace everything at once.
  • Finally, hire an experienced HVAC contractor to assess your needs based on your budget, space and overall goals.
is it cheaper to replace furnace and ac together

If your furnace and AC are both efficient despite occasional repairs, upgrading solutions can save you money. Replacement of both could save 10-15%, however, it could be expensive if you’re on a budget.

All in all, many factors affect the decision to replace the furnace & AC together or separately. Think through the process, assess space, understand your HVAC, budget properly, and seek the input of a professional if in doubt. Residential fires can cause serious damage, so making the right decision can help you avoid getting hot or cold!

Factors to Consider in Replacing Furnace and AC Together

As a professional, it is crucial to consider several factors before replacing both the furnace and AC simultaneously. The following are some essential factors to consider:

  • Equipment age and lifespan – Determine the current age of the furnace and air conditioning units in your home and compare this to their average lifespan. It helps you make an informed decision to replace both units if they’re approaching the end of their lifespan.
  • Efficiency ratings and technology – Evaluate the efficiency of your current system. Upgrading to a more efficient system will save you energy costs over time, and combining both systems will increase your efficiency due to modern furnace and AC technology.
  • Savings and benefits – A new, efficient HVAC system will significantly reduce your overall energy costs and maintenance requirements. Combining both systems saves you money rather than purchasing each separately.

It is important to note that several unique details make replacing both systems an excellent option. One advantage is that the installation process involves one installation, saving money when a contractor installs both units together. Furthermore, combining both systems provides maximum efficiency, ensuring that both units will operate to their full potential.

Having understood the benefits of having both systems replaced at once, it is time to take action. Do not miss out on the cost-saving benefits of replacing both your furnace and AC. 

Age and Efficiency of Current HVAC System

Replacing your furnace and AC is a big decision that depends on various factors, such as the current system’s age and efficiency. If yours is old and inefficient, it may be time for an upgrade. To help, we’ve created a table that shows how age affects efficiency:

Age RangeEfficiency
< 10 yearsHigh (95%)
10-15 yearsModerate (75%)
15+ yearsPoor (60%)

The table shows that systems over 15 years are less efficient. So, consider replacing both your furnace and AC together if they’re similar in age since they share components.

Outdated systems use more energy and cause comfort issues, like drafty spots or uneven heating/cooling. This can lead to higher bills due to breakdowns or repairs. Upgrading to a newer model improves performance and saves money.

Frequency and Cost of Repairs

When deciding to replace your furnace and AC, consider repair frequency and cost. Check out this table with common repair costs for both:

Type of RepairFurnace Cost ($)AC Cost ($)
Ignitor Replacement$300-$400N/A
Blower Motor Replacement$450-$600N/A
Fan Motor ReplacementN/A$350-$600
Refrigerant Leak RepairN/A$200-$1,500

Furnace repairs are usually pricier than AC ones. But an AC leak could cost more in the long run due to pricey refrigerant refills. 

If your units need frequent repairs, replacing them together may be better cost-wise. One homeowner kept paying for repairs on their old units. So, they replaced them with high-efficiency models. This not only saved them money on energy bills but also eliminated the need for constant repairs. Consider not just immediate repair costs, but also potential future costs when thinking about replacing both systems together.

Energy Bills and Savings

When replacing your furnace and air conditioning, energy savings should be top of mind. New units are designed to work together for optimal efficiency. Upgrading both at once could save money long-term.

Think about the environment, age, and user habits. If one unit is older or needs repairs often, replacing both can provide convenience and maximize efficiency.

You may qualify for rebates or incentives from local government or energy companies. Consult with pros to get the best options and make informed decisions.

Overall, replacing both furnace and AC at the same time has its advantages in energy savings and comfort. Even though it may seem pricey, it’s worth considering as there will be long-term savings and you’ll benefit from today’s technology advancements.

Capacity and Size of the HVAC System

The size and capacity of your HVAC system are important for replacing both the furnace and AC. An undersized or oversized unit won’t work properly, leading to discomfort and energy waste. To get the right size and capacity, consider these factors:

Home SizeLarger homes need larger HVAC systems. Smaller homes need smaller ones.
Insulation QualityWell-insulated homes need less heating and cooling than poorly insulated homes.
Ceiling heightHomes with high ceilings need bigger HVAC systems than standard ceiling heights.
Location & ClimateThe climate of your area affects the cooling load of your HVAC system. Hotter climates need more cooling than colder areas.

Getting a bigger unit doesn’t guarantee the best solution. Oversizing leads to shorter cycles and frequent starts and stops, decreasing efficiency and increasing bills. A professional consultation can determine the perfect size of the furnace and AC for your home. Consider other factors, such as ductwork sizing, for proper airflow. Prioritize performance over price. Choosing the right-sized HVAC system will save money on energy bills and provide comfort for years. 

Warranty and Lifespan of Components

When swapping out a furnace and AC, think about the warranty and lifespan of both components. Here’s a table with info on those two things:

ComponentWarranty LengthAverage Lifespan
Furnace10-20 years15-30 years
AC Unit5-15 years10-15 years
DuctworkN/A25+ years
Thermostat1-5 years10+ years

Warranty and lifespan lengths vary based on usage, maintenance, and installation quality. Additionally, when replacing both, it may be cheaper to invest in higher-quality components with longer warranties.

As per Consumer Reports, “Proper care can make a system last more than twice as long as a neglected one.” Maintain your HVAC system to get the most life out of it. 

Pros and Cons of Replacing Furnace and AC Together

Replacing a furnace and AC together can have advantages and disadvantages, and the decision depends on various factors. Let’s dig deeper and explore the benefits and drawbacks of this scenario.

Installing a new heating and cooling system at the same time is cost-effective, as it eliminates the need for separate installations and may lead to discounted prices.Installing a new heating system may need the addition of new ductwork to suit the size and capacity of the new system, leading to more time and expenses involved.
Replacing the furnace and AC together ensures maximum efficiency, as both units work in harmony to provide optimal home comfort and energy efficiency.New heating or cooling systems can have compatibility issues with the old components such as air conditioner’s evaporator coil or air handler that might not work at full potential with the new technology and efficiency system.
With new technology and quality HVAC systems, homeowners can enjoy the best energy efficiency, reducing energy bills and helping our environment.The capacity air conditioner should match the furnace’s BTU output, and if the size is incorrect, it could lead to inefficient heating and cooling and possibly shorten the lifespan of the HVAC equipment.
A new system also has a warranty, making maintenance and repairs for the first few years less stressful and cost-efficient.New heating or cooling system can have compatibility issues with the old components such as air conditioner’s evaporator coil or air handler that might not work at full potential with the new technology and efficiency system.
A new system can also solve previous problem areas that caused discomforts such as cold spots and temperature spikes.New heating or cooling systems can have compatibility issues with the old components such as the air conditioner’s evaporator coil or air handler that might not work at full potential with the new technology and efficiency system.

It is essential to note that each scenario and house structure is unique, and the decision of replacing the furnace and AC together should depend on multiple factors such as the age of existing equipment, minimum energy efficiency rating and square footage of the house.

In case homeowners are replacing both furnace and AC systems, it’s an excellent idea to replace them with the right size and capacity air conditioner and a modern, efficient handler to fully take advantage of the seasonal energy efficiency ratio (SEER) rating and AFUE rating of the furnace. Doing research and consulting with a reliable HVAC contractor can help homeowners best decide on the right equipment to replace, keeping in mind the long-term benefits and savings.

Advantages of Replacing Furnace and AC Together

Replacing both a furnace and an AC unit together might seem costly, but it comes with many benefits! These include:

  • Saving money on installation costs.
  • Reduced energy consumption with modern systems.
  • Improved comfort as they work together to regulate temperature.
  • Better compatibility, preventing future issues.
  • Extended warranties from manufacturers.
  • Higher return on investment in terms of property value.

Before making a decision, homeowners should consider factors such as climate, age of existing units and budget limitations. Professional consultation can help determine if simultaneous replacement is the best option.

Maximum Efficiency and Energy Savings

Maximizing efficiency and energy savings is essential when replacing a furnace and AC together. Doing so means having a system that works in harmony, resulting in great efficiency and cost savings.

The benefits of combining a new furnace and AC include:

ScenarioOld Furnace & AC SEER/EER RatingsNew Furnace & AC SEER/EER Ratings% Savings on Energy Costs
Replacing Just the AC12/916/13.520%
Replacing Just the FurnaceN/A (No Cooling)95 AFUE (Efficient)25-30%

An optimal furnace and AC system yields greater savings over time. This can equate to huge financial savings which can be realized in only a few years. Plus, the system’s efficiency reduces energy waste, leading to fewer hot or cold spots which can harm your health.

Better Performance and Home Comfort

Replacing your furnace and AC together is a feasible way to enhance your home’s performance and comfort. Here are three points to consider:

  1. Advanced Technology: By replacing both units together, you can enjoy the most recent HVAC technology. This will operate more efficiently, keeping your home optimally heated or cooled.
  2. Compatible: Buying both new systems together will ensure they match and work together seamlessly. You’ll have greater control over your home’s temperature.
  3. Reduced Prices: When you replace both systems together, you may be eligible for discounts or promotions from the manufacturer or installation company.

It’s also worth noting that replacing older systems with modernized ones can save you money on energy bills while reducing environmental waste. Regularly maintaining your equipment will also extend its life.

Consult with contractors who specialize in this area before making a decision. They’ll provide maintenance advice and suggest reliable manufacturers.

Lower Installation and Maintenance Costs

Replacing the furnace and AC together yields lower installation and maintenance costs. 

  • This reduces labor and installation expenses, as you only need one contractor for the job. 
  • Furthermore, new systems reduce future repair costs due to less wear and tear. 
  • They are more energy-efficient, leading to lower utility bills. 
  • The combined systems work better together as they share air circulation parts and ductwork.

Always check for manufacturer discounts and rebates when purchasing new HVAC equipment. This can offer great savings, and you won’t have to worry about your furnace catching fire.

Improved Air Quality and Safety

Invest in a new furnace and air conditioning system to reap the benefits of improved air quality and safety. 

  • Advanced filters capture allergens, dust, and pollutants. Plus, new systems have up-to-date safety features that protect you from fire hazards and gas leaks.
  • Programmable thermostats add more control to temperature regulation – energy-saving when you’re away or asleep. 
  • Zoned heating and cooling systems have multiple thermostats to regulate temperatures in different parts of the house.

Unite comfort and efficiency with upgraded furnaces and ACs. This enhances your daily living and saves money on energy bills. Improve air quality, safety, and comfort – replace your furnace.

Disadvantages of Replacing Furnace and AC Together

Replacing both furnace and AC units simultaneously might be beneficial to homeowners. But, it can be costly upfront. Finding compatible units for an older home or one with unique challenges can be difficult too.

Replacing both units at once can lead to uneven wear on components. Components may wear out faster than others due to overuse.

Get an HVAC professional’s advice before making a final decision. They can help make sure everything works properly and provide guidance with installation.

Higher Upfront Costs

Replacing a furnace and AC together may seem scary, due to the higher upfront costs. However, this investment can save you money in the long run. Here are some reasons why:

  • One Installation Cost – Pay for installation fees only once, instead of twice.
  • Efficiency – Newer models perform better than older ones, ultimately reducing your energy bills.
  • Warranty – Get one comprehensive warranty instead of two separate ones.

Investing in a new furnace and AC unit has more benefits than just saving on monthly bills. You won’t need to worry about unexpected breakdowns or poor performance.

Limited Options and Flexibility

Replacing both furnace and AC at once can limit homeowners to specific models and brands that work together. This could mean reduced efficiency and increased energy consumption. But, budget constraints may force you to make choices that don’t match your preferences or needs.

HVAC contractors can provide tailored solutions, though this may cost extra. Homeowners must decide their priorities and make a well-informed decision.

The US Department of Energy says replacing it with more efficient systems can save up to 30% of energy. So, it’s essential to strike a balance between affordability, compatibility, and efficiency for the best value.

Installation locations and system configurations may also become an issue. Each home has unique layouts and infrastructure, which can affect HVAC placement. Also, professionals must consider whether HVAC zoning is possible or necessary.

Increased Disruption and Time for Installation

Replacing your furnace and AC at the same time can be disruptive. You may have to leave your home during installation so finding temporary accommodation is a must.

Also, acquiring permits and inspections from local authorities will require paperwork and can take several days. The installation process for both units will need a larger team of technicians with more complex equipment, increasing disruption.

  • To reduce disruption is to schedule the installation during mild weather when you don’t rely on your HVAC excessively. 
  • Find an experienced professional with excellent ratings to do an efficient installation and reduce inconvenience.

This reduces energy consumption, brings better climatic control, and saves money in the long term while avoiding future breakdowns and repairs.

When Is the Best Time to Replace the Furnace and AC Together?

When considering replacing your furnace and AC together, there are a few factors to keep in mind. 

  • Age of your current units and their efficiency levels will play a significant role in the decision-making process. If your HVAC system is over 10 years old, it may be time for a replacement to save on energy costs.
  • If your furnace or AC unit is experiencing frequent breakdowns or issues, it may be more cost-effective in the long run to replace both simultaneously rather than repairing them separately. This will avoid future repair costs and ensure a more efficient and reliable system.
  • It’s also important to consider the size and capacity of your current units and how they match up with your home’s square footage and needs. Investing in a new, right-sized system will improve home comfort and energy efficiency, reducing energy bills and maximizing performance.
  • It’s essential to select a reputable HVAC contractor or company to perform the installation. Research the brand, warranty, and AFUE or SEER rating of the new equipment thoroughly to ensure the most efficient and long-lasting system. Don’t miss out on the opportunity to increase your home’s comfort and save on energy costs by considering a furnace and AC replacement today.

Signs That You Need a New Furnace and AC System

Is your furnace or AC system no longer providing adequate heating, ventilation or air conditioning? Here are signs it’s time to replace them both:

  • It’s older than 10 years.
  • Energy costs have skyrocketed.
  • Inconsistent temperatures in the home or business.
  • Needs frequent repairs.
  • Unusual noises and odors coming from the unit.
  • Indoor air quality has decreased significantly.

Replacing both systems is cost-effective. It can save you money on installation costs.

Scenarios Where Replacing Both HVAC Systems is Hugely Beneficial

Replacing HVAC systems is a big expense. Knowing when to replace both systems at the same time can save money and time. 

  • An old AC and furnace together can waste energy and cause double the trouble. However, replacing only one system can lead to future problems.
  • Swapping two components together brings advantages like more efficient and cheaper bills. But, compatibility is key. Newer equipment with an older partner can mean subpar performance and higher maintenance costs.
  • Experts agree that replacing both units at once is the way to go. It cuts out repair costs and boosts energy efficiency. Plus, it eliminates the need for further repairs or replacements before their life cycles end.

Industry studies show that furnaces last 15-20 years and ACs 10-15. Keeping track of these dates helps plan ahead.

Upgrading both units at the same time is the best financial decision for homeowners; it’s comfortable, clean air-flow all year round and future-proofing against potential issues.

Old and Inefficient Furnace and AC Units

If your heating and cooling system is outdated, it’s time for a replacement. But when’s the best time to replace both furnace and AC units? Consider these points:

  1. If your units are over 10-15 years old, it’s time to replace them. Old systems can break down often and be less energy-efficient, making your bills higher.
  2. If you feel temperature differences in your home, your units may not be performing as they should. A new system will give a consistent temperature.
  3. If you hear strange noises or smell weird odors from the furnace or AC, it could mean a bigger problem. Get a new system before it gets costly!

Replacing both furnace and AC units after 10-15 years increases energy efficiency and comfort. Make sure to get professional help for installation and maintenance, too, so your system keeps running properly.

Major Breakdowns and Repairs

Having trouble with your HVAC system and pricey repairs? It may be time to replace both your furnace and AC together. Here’s why:

Costly RepairsWhen repairs cost the same as buying new, replace both furnace and AC
Age of SystemIf either unit is over 10 years old, replace both for maximum efficiency
New TechnologyModern systems are more energy-efficient, saving you money!

Don’t miss out on savings by not replacing both units together. In the long run, it’ll be worth it.

Remodeling or Renovating Your Home

Remodeling or renovating your home can be exciting! It gives you the chance to upgrade and change your living space. But it’s essential to think about replacing your furnace and AC as well.

Replacing both can save installation and efficiency costs. It means both systems work together, so you have fewer breakdowns to worry about. You’ll feel secure knowing your HVAC system is up-to-date and running great.

If you’re only upgrading one system, talk to an experienced HVAC technician. They can help you decide if the other system needs replacing too.

Your renovations might affect your existing heating and cooling system. A technician can make sure potential issues are taken care of. So, if you’re remodeling or renovating, consider replacing both your furnace and AC. Talk to an HVAC contractor first to make sure you get optimal performance and don’t have to worry about what needs attention later.

How to Choose the Right HVAC Contractor and System

When deciding on a new HVAC system or contractor, it’s important to consider several factors that can impact your home’s comfort, air quality, and energy bills. Here are five essential tips to help you choose the right HVAC contractor and system for your needs:

  1. Research the company: Check for proper licensing, insurance, and certifications, as well as reviews and ratings from previous customers. Look for a company with a track record of quality work, reliable service, and customer satisfaction.
  2. Consider the size and capacity: A properly sized HVAC system is essential for optimal performance and energy efficiency. Your contractor should perform a load calculation to determine the right size and capacity for your home’s square footage, insulation, windows, and other factors.
  3. Compare options and features: There are many different HVAC systems, brands, and technologies on the market, each with its advantages and disadvantages. Consider factors such as energy efficiency ratings (SEER and AFUE), warranties, component quality, and smart features that can enhance your home’s comfort and help you save money on energy bills.
  4. Don’t forget about the air quality: Your HVAC system plays a crucial role in maintaining good indoor air quality by filtering out pollutants, allergens, and humidity. Consider options such as high-efficiency air filters, UV lamps, and whole-house humidifiers or dehumidifiers to improve your home’s air quality.
  5. Get a detailed estimate and warranty: Before making a final decision, ask for a detailed estimate that includes installation costs, labor, and equipment. Make sure you understand all the terms and conditions of the warranty, including what’s covered and for how long.

Remember, choosing the right HVAC contractor and system can impact your home’s comfort, performance, and energy bills for years to come. Take the time to research and compare options before making a decision.

According to a study by the U.S. Fire Administration HVAC equipment is responsible for an average of 7% of all residential fires, making it important to choose a reputable and experienced contractor for installation and maintenance.

Researching and Interviewing HVAC Companies

Research and interview multiple companies when choosing an HVAC contractor and system. Research can help you make a confident decision that fits your needs and budget.

  • Make sure the company is licensed, insured, and experienced in the system you require. Read reviews from their clients to review their reputation.
  • During the interview process, ask questions about their experience with similar systems and how long the installation may take. 
  • Ask for certifications or licenses if they haven’t been provided.
  • Inquire about warranties or guarantees for maintenance repairs and new installations. 
  • Request a written estimate with costs and a timeline before making a decision.

Factors to Consider in Choosing the Right Furnace and AC System

Selecting the right HVAC contractor and system can be tricky. Here are some things to keep in mind:

  • The experience of the contractor is key for quality work.
  • Check licensing and certifications too.
  • The efficiency rating of the equipment affects your utility bills. Choose budget-friendly options and maintenance plans.

The size and energy consumption of the HVAC is essential. Don’t buy more than you need as it will lead to inefficiency. Sizing correctly ensures comfort.

SEER Rating and Energy Efficiency

SEER Rating and Energy Efficiency are essential to pick the perfect HVAC system. The SEER rating decides the energy efficiency of air conditioners and heat pumps. Generally, the higher the SEER rating, the lower the operating costs and the better the performance.

Check out the table below for more info:

SEER RatingOperating CostSystem Performance
16Very LowBest

Benefits of a system with a higher SEER rating include reduced operating costs and improved performance. When selecting an HVAC system, compare different SEER ratings and make an informed decision. If you live in a hot climate, investing in a higher-rated system can save you money in the long run.

It’s important to maintain and inspect your HVAC system post-installation. Also, look out for any rebates or tax credits on energy-efficient systems offered by your state or local authorities.

Capacity and Size Requirements based on Square Footage

Making sure your HVAC contractor and system are good for your house size is key. Let’s check the capacity and size needs for different sizes of homes.

Square FootageAC CapacityHeating Capacity
Under 1,00018,000 BTU/hr40,000 BTU/hr
1,000 – 1,50024,000 – 30,000 BTU/hr45,000 – 60,000 BTU/hr
1,500 – 2,00030,000 – 36,000 BTU/hr60,000 – 75,000 BTU/hr
2,00 – 2,50036,000 – 42,000 BTU/hr75,000 – 90,000 BTU/hr

Not less important is checking the energy efficiency of your insulation. Insulated living spaces let you have the best comfort levels without worrying about high bills. Get references from your HVAC contractor to make sure they’re legit and their work is good.

Quality and Technology of Components

When deciding on an HVAC system and contractor, quality and technology are key. Here’s what to know:

  • Air Filters trap pollutants and small particles, improving air quality.
  • A programmable Thermostat saves energy and money.
  • Sealed Ductwork stops air leaks, making the system more efficient and cutting energy costs.
  • It’s also wise to pick reliable brands for components and make sure the contractor is experienced in the type of system you’re getting.
  • Get multiple quotes and ask questions about products and services.
  • See if there are warranties or guarantees.
  • Investing in great components initially will save money due to fewer repairs and more efficient use. Keep this in mind while you make your decision.

Warranty and Future Maintenance Needs

To keep your HVAC purring for years, consider warranty and maintenance needs. Here’s what to think about:

  • Warranty – Seek warranties for the system and the contractor’s work. Check length and coverage of warranties before deciding.
  • Maintenance Needs – Find a reliable contractor who can provide regular maintenance. Ask about frequency and costs.
  • System Life Expectancy – Choose a system based on life expectancy. Investing in a long-lasting one saves money.
  • Energy Efficiency – An energy-efficient system reduces bills and carbon footprint. Ask for energy star certification.
  • Costs – Don’t just look at upfront pricing. Consider life expectancy, energy efficiency, warranty period, and repair/maintenance costs.

HVAC upkeep goes beyond filters and coils. Check refrigerant levels, electric connections, condenser coils, and drain lines. Warranty plans should cover parts AND labor.

Energy Star says heating & cooling are half of a home’s energy utilization. An energy-efficient air conditioner can save you 25% on bills with features like remote access.

Cost and Financing Options

The cost and financing options for an HVAC installation are essential. A dependable contractor should be upfront about the price of equipment, labor, and extra fees for permits and setup. Expect to pay between $4,500-$6,000 for equipment, $2,500-$5,000 for labor, and $800-$1,500 for additional charges. Price may differ based on location, home size, design, and system type.

Save some money with financing options with low-interest rates or long-term payment plans. Several contractors partner with banks or lenders to offer financing solutions. See if you can get a rebate when switching to energy-efficient systems such as heat pumps or geothermal heaters.

Request a detailed quote with all costs broken down. Compare offers from various contractors, read reviews online, and ask questions. Only contract reputable contractors for your peace of mind.


When you’re replacing your home’s heating and cooling system, it’s important to think about cost, efficiency, and energy savings. It might make sense to replace both the furnace and AC together. This is because a modern efficient handler works best with a new furnace. Your home size and cooling needs will also affect this choice. Getting both together may seem expensive, but it can save money. A HVAC contractor can measure your square footage, analyze use patterns, and do load calculations. Quality components used in modern furnaces with high AFUE outputs can improve efficiency and air quality. When replacing your air conditioning components or changing your HVAC system, there isn’t one answer. Different homeowners have different needs. Research and an experienced contractor can help you make the best decision for your home, needs, and budget.