Old Floor Furnace

How To Replace Old Floor Furnace – Step By Step Guide

As the winter season approaches, ensuring that your home heating system is functioning optimally is essential. If you have an old floor furnace, it may be time to consider replacing it.

Floor furnaces are a popular heating option for many homeowners due to their effectiveness and efficiency in heating a room. However, these furnaces may become outdated, inefficient, and require replacement over time. If you’re considering replacing your Old Floor-Furnace, you’ll need to follow a few simple steps to ensure the process is successful.

Here, we’ll provide you with a step-by-step guide on how to replace an Old Floor-Furnace. We’ll begin by discussing the common signs that indicate it’s time to replace your furnace, such as age and inefficiency. We’ll also explore the different types of floor furnaces available and which one may be the best fit for your home.

Old Floor Furnace

What Are Floor Furnaces?

What Are Floor Furnaces

Floor furnaces are heating systems that are installed directly into the floor of a building. They provide warmth by utilizing an adjustable heat feature, allowing users to control the level of heating according to their comfort preferences. These furnaces are designed to meet building standards, ensuring their safety and efficiency.

They are typically powered by burner oil, which is used as a fuel source to generate heat. With their unique installation, floor furnaces offer localized heating solutions and can be a practical choice for smaller spaces or specific areas within a building.

5 Easy Steps To Replace Old Floor Furnace

5 Easy Steps To Replace Old Floor Furnace

One way to replace an old floor furnace is by installing more modern and energy-efficient heating options. Space heaters are a popular choice as they can provide targeted heating to specific areas of the home. They come in various sizes and styles, making it easy to find one that suits your needs.

Another option is to upgrade to an energy-efficient air conditioning system that can also provide heating during colder months. By replacing a defective gas furnace with these alternatives, you can ensure adequate heating and enjoy the benefits of greater control over your home’s temperature. Here is the full process in detail for Replacing an Old Floor-Furnace:

Step 1: Turn Off The Gas Supply And Power Source

Turn Off The Gas Supply And Power Source

It is important to turn off the gas supply and power source. This will prevent potential leaks or accidents while working on or removing the furnace. To turn off the gas supply, locate the shut-off valve near the furnace and turn it clockwise until fully closed.

Next, locate the circuit breaker or switch that controls the power to the furnace and flip it to the “off” position. By taking these precautionary steps, you can ensure your safety and avoid any potential hazards associated with working on an Old Floor-Furnace.

Step 2: Remove The Old Floor-Furnace

Remove The Old Floor Furnace

To begin the process, turn off the gas supply to the floor furnace, ensuring safety throughout the removal. Carefully disconnect any gas lines and electrical connections attached to the old furnace, taking extra caution with the gas valve. Once disconnected, remove any screws or bolts securing the floor furnace in place.

To aid in the removal, consider using a dolly or seek assistance to safely lift and remove the Old Floor-Furnace from its location. After removal, clean the area where the old furnace was located, removing debris and dust.

Step 3: Measure The Opening And Select A New Floor Furnace

Measure The Opening And Select A New Floor Furnace

When replacing an Old Floor-Furnace, one of the most important steps is to measure the opening and select a new floor furnace that will fit properly. To do this, you must measure the dimensions of the existing opening on your floor where the old furnace is located.

This includes measuring the length and width of the opening. Once you have these measurements, you can shop for a new floor furnace that matches the dimensions of your existing opening.

Selecting a furnace that fits snugly into the opening is important to ensure proper installation and efficient heating. Consider factors such as energy efficiency and heating capacity when choosing a new floor furnace for optimal performance.

Step 4: Install The New Floor Furnace And Connect The Gas Line

Install The New Floor Furnace And Connect The Gas Line

When replacing an Old Floor-Furnace, it is important to install the new one properly and ensure the gas line is connected securely. One crucial component to consider is the heat exchanger, which efficiently transfers heat from the burner to the surrounding air.

Additionally, using proper insulation around the furnace helps to minimize heat loss and increase energy efficiency. It is also crucial to adhere to safety standards to prevent any potential hazards. Different types of furnaces, such as forced-air or radiant, offer various methods of heat distribution to suit different needs and preferences.

Step 5: Testing And Adjustments

As part of the process of replacing the Old Floor-Furnace, it is crucial to ensure that the new unit is functioning correctly. This involves conducting thorough testing to confirm that all components are in proper working order.

Additionally, it is important to check for any leaks or issues with the gas line to guarantee the safety and efficiency of the new furnace. Once these checks are completed, adjustments can be made to the settings and temperature control to ensure optimal comfort and energy efficiency. Regular maintenance and monitoring should be implemented to address any future issues promptly.

Signs That It May Be Time To Replace Your Old Floor-Furnace

Signs That It May Be Time To Replace Your Old Floor-Furnace

Over time, floor furnaces can become outdated and less efficient. If you’re unsure if it’s time to replace your Old Floor-Furnace, there are a few signs to look out for. One indication is if your floor furnace is producing uneven or insufficient heat.

If some areas of your home are consistently colder than others, it may be a sign that your furnace is not distributing heat properly. Another sign is if your energy bills have been steadily increasing. As furnaces age, they can become less efficient, leading to higher energy consumption and costs.

Additionally, if you’ve been experiencing frequent breakdowns or repairs with your floor furnace, it may be more cost-effective in the long run to invest in a new one. Ultimately, it’s important to consult with a professional HVAC technician who can assess the condition of your Old Floor-Furnace and recommend the best course of action for replacement.

Why You Should Replace A Floor Furnace

Popular floor furnaces are less energy efficient compared to other types of heating systems. Replacing it with a more modern and efficient heating system can help you save on your energy bills. Floor furnaces can release dust, allergens, and other pollutants into the air, especially when they are old and not properly maintained. Improperly functioning or high-traffic area installations of floor furnaces can pose a safety risk.

  • Increased energy efficiency
  • Improved indoor air quality
  • Enhanced safety
  • Better heating distribution
  • Increased home value
  • Reduced maintenance and repair costs

What Is The Difference Between A Furnace And A Floor Furnace?

What Is The Difference Between A Furnace And A Floor Furnace

When heating systems, there are various types to choose from. Two popular options are furnaces and floor furnaces. The main difference lies in their installation and functionality. People typically install a furnace, which is a heating system, in a utility room or basement.  It uses air systems to distribute warm air throughout the house. Furnaces were popular for their efficiency and ability to heat large spaces.

On the other hand, you install a floor furnace directly into the floor, providing heat from below. This type of system is ideal for homes with limited space or those looking for extra space. Floor furnaces can be economical and efficient, especially when combined with a direct vent or dual wall furnace installation.

For those on a budget, the cheapest floor furnace option may be worth considering. It offers heating capabilities while saving on installation costs. However, it’s important to note that a direct vent floor furnace is typically more efficient and safer than its cheaper counterparts.

What Can I Do To Improve My Old-School Gas-Fired Floor Furnaces?

If you’re looking to enhance the performance and safety of your old-school gas-fired floor furnaces, there are several steps you can take. Firstly, consider installing a heat exchanger to improve the efficiency of heat distribution throughout your home. Additionally, upgrading your water heater can optimize hot water production while minimizing safety hazards.

Another option is to explore alternative methods of heating, such as air heating systems, which can provide more effective and consistent warmth. Lastly, ensure proper combustion air supply to your floor heater to prevent any potential issues. With these improvements, you can enjoy a safer and more efficient heating experience.


The Old Floor-Furnace had been a reliable heat source for years, but now it had seen better days. Its once-glowing coals had faded, and the metal grates were rusted and pitted from years of use. Replacing an old floor furnace can be straightforward if you follow the right steps.

By turning off the gas supply and power source, removing the old furnace, measuring the opening and selecting a new one, installing and connecting the gas line and electrical wiring, making necessary adjustments, and performing regular troubleshooting and maintenance, you can enjoy the warmth of a new floor furnace in no time. If you’re unsure about any step or need further guidance, consult a professional to ensure a safe and successful replacement process.

Frequently Asked Questions

What Are Old Floor Heaters Called?

People commonly refer to old floor heaters as "radiant floor heaters" or simply "floor furnaces." People installed these heating systems in homes in the past to provide warmth by radiating heat directly from the floor.

Are Old Floor-Furnaces Safe?

Old Floor-Furnaces can pose safety risks due to their age and condition. They may have faulty or deteriorated components, such as gas valves or heat exchangers, which can lead to gas leaks or carbon monoxide poisoning.

Are Old Furnaces Gas Or Electric?

Old furnaces can be either gas or electric, depending on the specific model and installation. However, gas furnaces were more commonly handy in older homes, while electric furnaces have become more popular in recent years.

Are Old Furnaces Better?

Old furnaces are not necessarily better. While manufacturers may have built older furnaces to last longer, they often lack modern energy efficiency standards and can be more expensive to operate. Companies design newer furnaces to be more efficient and environmentally friendly.

What Is The Efficiency Of An Old Furnace?

The efficiency of an old furnace can vary depending on its age, condition, and maintenance history. However, older furnaces generally have lower efficiency ratings compared to newer models, typically ranging from 60% to 80%.

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