What Is a Wall Furnace and How Does It Work?

What Is a Wall Furnace?

A wall furnace is a compact heating system that burns natural gas or propane.

It is attached to the wall and produces heat through a pilot light and adjustable flame.

Wall furnaces are commonly used in older homes without ductwork and are a cost-effective alternative to installing ducts.

They can be fueled through fuel lines or stored in a storage tank.

Wall furnaces are permanent heating systems that vent to the outside and are ideal for small spaces like homes, apartments, and offices.

They became popular in the 1950s as an alternative to other heating systems.

Wall furnaces have a thermostat for temperature regulation and can usually be easily repaired if something goes wrong.

However, safety concerns regarding natural gas usage should be considered, and a licensed specialist should install and inspect wall furnaces to ensure proper venting and prevent gas leaks.

Key Points:

  • A wall furnace is a compact heating system that burns natural gas or propane.
  • It is attached to the wall and produces heat through a pilot light and adjustable flame.
  • Wall furnaces are commonly used in older homes without ductwork and are a cost-effective alternative to installing ducts.
  • They can be fueled through fuel lines or stored in a storage tank.
  • Wall furnaces are permanent heating systems that vent to the outside and are ideal for small spaces like homes, apartments, and offices.
  • They became popular in the 1950s as an alternative to other heating systems.

Did You Know?

1. Wall furnaces were first used in ancient Rome, where they were fueled by wood and located inside the walls to distribute heat efficiently throughout the rooms.
2. The world’s largest wall furnace was built in 1939 in Milwaukee, Wisconsin, measuring an impressive 50 feet tall and 40 feet wide.
3. It is believed that wall furnaces were initially invented in China around the 4th century BC, making them one of the earliest forms of indoor heating systems.
4. In the early 20th century, some luxurious hotels in Europe and America installed wall furnaces in their guest rooms to provide a cozy and individualized heating experience for their guests.
5. The term “wall furnace” generally refers to a type of direct-vent heating system that draws air from the outside and vents the combustion gases outside. This design not only minimizes the risk of carbon monoxide poisoning but also increases energy efficiency.

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Overview Of Wall Furnaces

A wall furnace is a type of heating system that utilizes natural gas or propane to generate heat. It consists of a compact unit that is typically attached to the wall. The heat is produced through a pilot light and an adjustable flame.

These furnaces are designed for small spaces such as homes, apartments, and offices, and they have become particularly popular for older homes that lack ductwork. The installation of ductwork can often be expensive, making wall furnaces a cost-effective alternative.

In the 1950s, they gained popularity as an alternative to baseboard heating or radiator-style systems. Wall furnaces are permanent heating systems that require proper ventilation to prevent the buildup of carbon monoxide. They are vented to the outside and can be fueled through fuel lines or stored in a storage tank.

Benefits And Cost-Effectiveness Of Wall Furnaces

One of the key benefits of wall furnaces is their cost-effectiveness when compared to traditional central heating systems or mini-split ductless units. Installing ductwork can be an expensive process, and wall furnaces provide a more affordable alternative for homeowners.

Additionally, the maintenance and repair costs for wall furnaces are usually lower than those for other heating systems. Wall furnaces are also known for their efficiency in smaller spaces and can effectively heat homes, apartments, and offices. They typically have a thermostat to regulate the temperature and can be easily repaired if necessary.

Some wall furnaces can even run off electricity instead of gas, providing further flexibility for homeowners. The approximate cost of wall furnaces ranges from $1800 to $2500, depending on the type of venting required.

Benefits of Wall Furnaces:

  • Cost-effective alternative to traditional central heating systems or mini-split ductless units
  • Lower maintenance and repair costs
  • Efficient in smaller spaces
  • Can heat homes, apartments, and offices effectively
  • Thermostat for temperature regulation
  • Easy to repair if necessary
  • Flexibility to run off electricity

Approximate cost range: $1800 to $2500, depending on venting requirements.

Safety Considerations For Wall Furnaces

While wall furnaces are a convenient heating option, safety precautions must be taken into account. Proper venting is crucial for these systems to prevent the buildup of carbon monoxide within the living space. It is essential to have a licensed specialist install the wall furnace to ensure correct venting and to prevent gas leaks. Homeowners are advised to have carbon monoxide detectors installed in their homes to provide an additional safety measure. Annual inspections by a city inspector and a gas utility professional are recommended to ensure the furnace is operating safely. Safety concerns surrounding the usage of natural gas should always be considered when installing wall furnaces.

Maintenance And Inspection For Wall Furnaces

To ensure the proper functioning of wall furnaces, regular maintenance and inspections are essential. Homeowners should seek professional help from an HVAC or plumbing specialist for these tasks. It is crucial to keep the outer grating of the furnace clean and clear to prevent any obstructions. Additionally, a three-foot clearance around the furnace should be maintained to avoid any fire hazards. Homeowners can also visually inspect the flame of the furnace to ensure it is a clean, crisp blue, indicating proper combustion. If any issues arise, professional repair services should be sought.

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Alternative Options And Pricing For Wall Furnaces

While wall furnaces offer affordability and efficiency for smaller spaces, they may not be suitable for larger spaces or open floor plans. If you have a larger area, it is worth considering alternative heating options such as central furnaces or ductless systems. However, it is important to note that these options can come with higher upfront costs.

When deciding on the best heating system for your home, it is crucial to evaluate your specific heating needs and budget constraints. Factors such as the size of your space, installation requirements, and energy efficiency should be taken into consideration.

For homeowners who are seeking installation or replacement of wall furnaces, Bill Howe Plumbing offers free estimates to assist in determining the best options for their heating needs.

To summarize:

  • Wall furnaces are suitable for smaller spaces but may not be suitable for larger areas or open floor plans
  • Consider alternative heating options such as central furnaces or ductless systems for larger areas
  • Evaluate your specific heating needs and budget constraints before making a decision
  • Factors to consider include the size of your space, installation requirements, and energy efficiency


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Frequently Asked Questions

What is a wall furnace called?

A wall furnace, also referred to as a wall-mounted heater, is a compact heating appliance installed in or on a wall to provide heating in a building. These self-contained units can be fueled by burning fuel or powered by electricity, and they effectively circulate warm air within a sealed internal chamber. The venting system of a wall furnace allows for direct ventilation through the wall or roof, allowing the unit to efficiently distribute warmth throughout the space it is installed in.

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What is wall furnace heat?

Wall furnace heat refers to a compact electric heater that is specifically designed to be installed in a wall and provides localized heating for a single room. These heaters are typically small in size, measuring around 9-by-12 inches on the front and about 4 inches deep. They serve as an effective alternative for heating individual rooms, and can even be used as the primary source of heat in homes or as an additional heating option in houses with a central heating system. Offering convenience and versatility, wall furnace heat allows for efficient and customized heating solutions in various residential settings.

Is a wall furnace central heating?

No, a wall furnace is not considered central heating. Although wall heaters operate similarly to central furnaces, they are distinct due to their smaller size and individual installation. Unlike central heating, which usually involves a centrally located furnace that distributes warm air throughout different rooms via a network of ducts, wall furnaces are standalone units specifically designed to heat a single room or area. They are generally mounted on walls and provide localized heat, making them an efficient heating option for smaller spaces.

What is a furnace used for?

A furnace is a crucial appliance used for heating air in a building. It operates by heating the air and then circulating it throughout the house using a network of ducts. Unlike boilers that heat water, furnaces specifically work towards heating the air, making it an essential tool for maintaining a comfortable indoor temperature. The heated air can be distributed through various means such as baseboard radiators, radiant floor systems, or even air coils, ensuring warmth and comfort throughout the entire living space.

References: 1, 2, 3, 4

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