How to Replace a Furnace and Save Energy!

How to Replace a Furnace?

Replacing a furnace is a labor-intensive and difficult task that should not be attempted by individuals themselves.

It is recommended to hire professionals to handle furnace replacement.

Hiring a qualified HVAC technician ensures proper installation, adherence to building codes, and protects the investment.

DIY installation can potentially damage the appliance, void the warranty, lower the resale value of the home, and result in lower energy efficiency and higher utility bills.

It is important to choose the right furnace and properly hook it up.

Venting, insulation, and electrical connections must be done correctly.

Proper positioning, electrical connections, and fuel line installation are vital for a successful installation.

Regular maintenance and prompt professional assistance are essential to prevent damage and ensure proper functioning of the new furnace.

Key Points:

  • Replacing a furnace is a labor-intensive and difficult task that should be done by professionals.
  • Hiring a qualified HVAC technician ensures proper installation, adherence to building codes, and protects the investment.
  • DIY installation can potentially damage the appliance, void the warranty, lower the resale value of the home, and result in higher utility bills.
  • Choosing the right furnace and properly hooking it up are important.
  • Venting, insulation, and electrical connections must be done correctly.
  • Regular maintenance and prompt professional assistance are essential for the proper functioning of the new furnace.


Did You Know?

1. The first central heating system using a furnace was invented by the ancient Romans around 120 AD. This system, known as hypocaust, distributed warm air through a series of channels placed under the floors of large buildings, providing heat from below.

2. In the 18th century, Benjamin Franklin invented the Franklin Stove, a precursor to the modern furnace. It was designed to burn wood more efficiently and emit more heat into the room compared to traditional fireplaces.

3. The invention of the thermostat in 1883 by Warren S. Johnson revolutionized furnace technology. It allowed for the automatic control of temperature, ensuring more comfortable and consistent heating in homes.

4. Furnaces have a heat exchanger, which is a crucial component that transfers heat from combustion fumes to the surrounding air. This prevents potentially dangerous gases, such as carbon monoxide, from entering the living space.

5. In terms of energy efficiency, newer furnaces can reach up to 98% efficiency, meaning that only 2% of the fuel used is wasted. This significant improvement in efficiency can help reduce energy consumption and lower heating bills.

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Importance Of Hiring Professionals For Furnace Replacement

Replacing a furnace is a complex and labor-intensive task that should not be taken lightly. It is highly recommended to hire professionals who specialize in furnace replacement to ensure the job is done correctly and safely. Attempting to replace a furnace without the necessary knowledge and experience can lead to costly mistakes and potential dangers.

By hiring professionals, you are entrusting the job to trained HVAC technicians who have the expertise and skills to handle the installation process. They understand the intricacies of different furnace models, including gas or electric options, one-stage, two-stage, or fully modulating furnaces, and they can guide you in selecting the right furnace based on your specific needs.

Moreover, professional technicians will adhere to building codes and regulations, ensuring proper installation and preventing any potential hazards. They will also conduct performance tests to ensure the new furnace is installed and functioning correctly, providing you with peace of mind and ensuring maximum energy efficiency.

Factors To Consider When Choosing A New Furnace

When replacing a furnace, it is essential to consider various factors to ensure you select the right one for your home:

  • The first decision is whether you prefer a gas or electric furnace. Gas furnaces are generally more energy-efficient and ideal for colder regions, while electric furnaces are suitable for areas with milder winters.

  • Furnace stages: You must also consider the different furnace stages – one-stage, two-stage, or fully modulating. One-stage furnaces have a single output setting and are the most common type. Two-stage furnaces offer two output settings for improved energy efficiency. Fully modulating furnaces continuously adjust their output based on the heating needs of your home.

  • Size of the furnace: Ensure you choose the right size of furnace for your home to ensure efficient heating.

  • Energy efficiency: Look for energy efficiency ratings such as AFUE (Annual Fuel Utilization Efficiency) to determine the furnace’s efficiency.

  • Compatibility: Consider the compatibility of the furnace with your existing ductwork and ventilation system. This ensures smooth installation and optimal performance.

In making an informed decision about replacing your furnace, it is crucial to consult with a qualified HVAC technician. They can provide expert advice tailored to your specific requirements and help you find the furnace that best suits your needs.

  • Gas furnaces are more energy-efficient and suitable for colder regions
  • Electric furnaces are suitable for areas with milder winters
  • One-stage furnaces have a single output setting and are the most common type
  • Two-stage furnaces offer two output settings for improved energy efficiency
  • Fully modulating furnaces continuously adjust their output based on the heating needs of your home

Proper Removal Of Old Furnace

Before installing a new furnace, it is vital to properly remove the old one. This process requires careful attention to ensure the safe disconnection of the old furnace and the proper closure of gas and electrical connections. Engaging a professional technician ensures the correct disconnection and removal of the old furnace, minimizing the risk of accidents and damage during the process.

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Benefits of hiring a professional technician for furnace removal:

  • Ensures safe disconnection and removal of the old furnace
  • Minimizes the risk of accidents and damage
  • Expert knowledge in handling gas and electrical connections
  • Peace of mind knowing the job is done correctly and efficiently

“Engaging a professional technician ensures the correct disconnection and removal of the old furnace, minimizing the risk of accidents and damage during the process.”

Checking Compatibility Of Tubes And Vents

When replacing a furnace, it is crucial to assess the compatibility of the existing tubes and vents with the new furnace. Incompatibilities can lead to improper ventilation and reduced performance. A professional HVAC technician will thoroughly inspect the existing tubes and vents, making any necessary adjustments or replacements to ensure optimal compatibility and airflow.

Crucial Steps In Hooking Up A New Furnace

The proper hooking up of a new furnace is a critical step that should only be handled by trained HVAC technicians. This process involves connecting the new furnace to the existing ductwork, electrical system, and fuel supply lines. It requires a thorough understanding of the manufacturer’s instructions, local building codes, and safety protocols.

Professional technicians have the necessary knowledge and expertise to complete this task effectively. They ensure that all connections are secure, properly sealed, and comply with safety standards. By entrusting this step to professionals, you can ensure that your new furnace operates efficiently and safely for years to come.

Performing Performance Tests For New Furnace

After the installation of a new furnace, it is crucial to conduct performance tests to ensure the proper functioning of the system. This step allows technicians to identify any potential issues, such as air leaks, gas leaks, or malfunctioning components, that may affect the performance and efficiency of the furnace.

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Performance tests involve checking the:

  • Airflow
  • Temperature differentials
  • Overall system operation

This comprehensive testing ensures that the new furnace is installed correctly and meets the expected performance standards. By hiring professionals, you can be confident that your new furnace will provide reliable heating and energy savings for your home.

Frequently Asked Questions

Is it hard to replace a furnace by yourself?

Replacing a furnace by oneself can be quite challenging. The task involves laborious efforts and a careful consideration of numerous factors. Given the complexity and importance of the appliance, it is strongly advised to engage professionals for the job to ensure the proper installation and functioning of the furnace.

Can you replace just the furnace?

While it is generally recommended to replace both parts of the AC system simultaneously, the furnace stands apart as it consists of a single unit. This means that you can replace just the furnace without needing to replace any additional components. Unlike the AC, where the condenser and evaporator work in tandem, the furnace is a self-contained unit responsible for heating the air. Therefore, if your furnace is no longer functioning efficiently or is in need of replacement, you can solely focus on replacing this specific element without the need to replace any other components of your central air conditioning system.

Why replace a furnace?

Replacing a furnace is necessary when it starts operating more frequently. When a gas furnace’s efficiency decreases, it struggles to produce the desired amount of heat. As a result, the furnace’s thermostat will constantly activate it to compensate for the inadequate heat delivery. By replacing the furnace, you can ensure that it runs more efficiently, delivering the required heat and minimizing excessive operation. This not only saves energy but also prolongs the lifespan of the furnace, reducing the need for frequent repairs or replacements in the future.

What does a furnace do?

A furnace is a heating system that functions by heating the air and then distributing it throughout a building using a network of ducts. Unlike boilers, which heat water for various heating purposes, a furnace focuses solely on producing hot air. The heated air can be channeled through ducts to warm different areas of a house or building. Furnaces are commonly used in residential and commercial spaces to provide efficient and consistent heat during colder months.

References: 1, 2, 3, 4

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