Can You Put a House Furnace in the Garage?

Rima Chatterjee

Garage Furnace Feasibility.

To heat your garage, using your house furnace seems like the most efficient and easiest way. But is it the right way? In this section on ‘Can You Put a House Furnace in the Garage?’, we will share all the information you need to know about the basics of a house furnace. We will then explain the concerns of using a house furnace to heat a garage that has been raising serious concerns. Keep reading to know more!

Understanding the Basics of a House Furnace

A house furnace is a must-have for keeping your home warm and cozy during the colder months. It works by burning gas or oil, then circulating the heat through ducts and vents. To ensure optimal performance, it’s essential to properly install, service, and maintain your furnace.

Can house furnaces be placed in a garage? Yes! But, it must adhere to guidelines set by regulatory bodies like the National Fire Protection Association (NFPA). The furnace should be 18 inches above the floor level and mounted on a platform with good air circulation.

Can You Put a House Furnace in the Garage

Also, garages are typically not insulated. So, you must install proper insulation and ductwork to avoid heat loss. If your garage has a low clearance or tight spaces, a wall-mounted heating unit may be the best option.

Pro Tip: For installation advice or further guidance on maintenance, consult a licensed professional. Oh, and don’t forget, with a heated garage, your tools won’t freeze!

Understanding the Concerns of Heating a Garage

Heating your garage can be great, particularly in winter. But, safety standards must be met. Gas-powered equipment can be a risk. It can also mean higher bills, and more carbon monoxide if not insulated properly.

Still, heating your garage has perks. Make a workout area or home office with a heater. Plus, it’s a great place for items that don’t like the cold, like paints and chemicals.

You might have questions about safety and cost. Instead of putting it off, ask experts for advice. They can tell you what would work best for your situation. Don’t let the frost catch you unprepared, reach out today.

Building Codes and Regulations for Garage Heating

To ensure you have a safe and effective HVAC system in your garage, it’s important to consider building codes and regulations for garage heating, especially when it comes to HVAC system installation. In this article section, we’ll discuss how to comply with these codes. We’ll cover three critical sub-sections, HVAC system options for the garage, ductwork, and ventilation requirements, and combustion air and exhaust ventilation, to help you make the right choices for your garage heating needs.

HVAC System Options for the Garage

HVAC systems are key for managing the temperature of your garage. Portable heaters, forced air heaters, and radiant heating systems are 3 different options. Each has positives and negatives.

For example, portable heaters are easy to use and inexpensive, but they aren’t great for long-term use and require manual work. Forced air heaters offer fast and effective heating, but can be noisy and need maintenance. Radiant heating systems provide silent operation and comfortable heat distribution but need proper installation by a certified installer.

It’s important to consider building codes and regulations when heating a garage. Ventilation and clearance must be taken into account for safety.

Investing in a good HVAC system for your garage can make a big difference, and increase the value of your property. Consider permits, planning, and a reliable contractor with experience in similar projects, and turn your garage into a leisure paradise. Proper ductwork and ventilation are essential for avoiding a garage fire.

Ductwork and Ventilation Requirements

For installing a heater in your garage, here is a table of key ductwork and ventilation requirements:

According to HVAC Joplin MO, avoid duct tape for sealing seams. Use aluminum foil tape or mastic sealant instead.

Knowledge of Heating Codes is important. Staying informed keeps you within the limits and ensures a warm garage.

In 2022, the International Code Council released new energy efficiency standards for residential and commercial buildings. Ensure proper combustion air and exhaust ventilation to prevent your garage from becoming a gas chamber, unless you like singed nose hairs.

Combustion Air and Exhaust Ventilation

Combustion air and exhaust ventilation are essential when installing a heating system in your garage. Ventilation makes sure the heater functions without harm to you or your property.

Combustion AirExhaust Ventilation
Must come from outdoors or ventilated spacesMust remove combustion gases from the garage
Air ducts must match the size of the heating systemVentilation fans must fit fuel type and volume
Inlet openings can’t be near windows or doorsACH rates must meet local codes
For these factors, here is a table:

Did you know improper combustion of air and exhaust ventilation can cause carbon monoxide gas? Hire a licensed professional for installation and maintenance.

The fuel type and local codes matter too. For instance, natural gas or propane needs a different fan than oil-fired systems. Plus, codes may have requirements for ACH rates, duct sizing, and inlet/exhaust placements.

I heard of a homeowner who tried installing a garage heater without proper ventilation. He had high levels of carbon monoxide in his home, making his family sick. Don’t let this happen to you,  safety first with garage heating.

Keep your garage warm – frozen wrenches are not fun!

Choosing the Right Heating System for Your Garage

To find the best way to heat your garage space, you need to consider your garage’s size and the heating requirements, and also the safety factors that come along with it. In order to choose the right heating system for your garage, this section on ‘Choosing the Right Heating System for Your Garage’ with sub-sections on ‘Gas Furnaces vs. Electric Furnaces‘, ‘Unit Heaters vs. Radiant Floor Heat’, and ‘Space Heaters as an Option’ will be a solution for all your heating requirements.

Gas Furnaces vs. Electric Furnaces

FeaturesGas FurnacesElectric Furnaces
Energy SourceNatural gas or propaneElectricity
Heating MethodCombustion of gasElectrical resistance
Energy EfficiencyHighVariable (dependent on electricity generation)
Heating CostsLowVariable (dependent on electricity rates)
InstallationRequires gas line and ventilationSimple installation
MaintenanceRegular maintenance requiredLittle maintenance needed
Power DependencyIndependent of power outagesRequires electricity to operate
Environmental ImpactProduces combustion byproductsDepends on electricity generation source

Tip: Consider factors such as energy efficiency and installation costs before choosing a type of furnace. Alternately, heaters and radiant floor heat are like space heaters and heated blankets.

Unit Heaters vs. Radiant Floor Heat

Want to heat your garage? Unit heaters or radiant floor heat? Let’s compare the two. Cost-wise, unit heaters are cheaper. But, they may not be as efficient. Radiant floor heat is more expensive initially, but it can save you money in the long run.

Unit heaters are simple to install. Hang them from the ceiling or wall and connect them to a gas line or electrical supply. Radiant floor heating is complex. It requires running tubing or wires under the garage floor. Radiant floor heat covers the entire surface area, so it provides consistent heating. Unit heaters only provide localized heating.

Since Ancient Roman times, radiant floor heating has been around. Today, it remains an effective option for keeping garages warm.

Or, get a space heater or light some candles and pretend you’re camping!

Space Heaters as an Option

When it comes to heating your garage, space heaters are a great option. Here are some points to keep in mind:

  • There are different types of space heaters: electric and propane.
  • Electric heaters are cheaper but less efficient and powerful.
  • Propane heaters work well even if the power goes out.
  • The size of your garage matters when choosing a heater.
  • Make sure the heater has safety features.
  • Installing a ceiling fan or insulated door can help optimize heating.

Remember that space heaters may be good for short-term use, but not so much for long-term. The location also affects which heater is best. For example, one homeowner in Alaska used propane heaters for his two-car garage and saw a drastic reduction in his electricity bills! Bottom line? Don’t try to DIY this, leave the hot mess to the professionals.

Installation and Safety Precautions

To ensure the proper and safe installation of a furnace or heating system in your garage, it’s crucial to follow the right installation and safety precautions discussed in this section titled “Installation and Safety Precautions.” The section covers three sub-sections, including the importance of professional installation, safety precautions for garage heating, ventilation, and indoor air quality. These sub-sections will help you understand the safety measures required to install heating systems in your garage without any issues.

The Importance of Professional Installation

Professional installation is key for optimal equipment functioning and safety. Pros have the required skills and knowledge to install correctly and guarantee compliance with relevant regulations. Plus, they can provide timely solutions in case of issues during or after installation.

Safety is a must. Ensure proper ventilation to allow airflow. Appropriate protective gear should be worn to prevent electric shocks or exposure to hazardous chemicals. Keep extension cords away from moisture and heat sources.

An example to show the importance of professional installation: A family hired an inexperienced individual to install their gas oven. Due to improper installation, carbon monoxide leaked into their home causing serious harm and damage. Professional installation would have avoided this.

Safety Precautions for Garage Heating

When heating a garage, safety must be top of mind. Install a smoke detector first. Have a professional electrician do the electrical connections, and make sure the power source is compatible with the heater.

Choose a heater designed for garages, not space heaters or other portable units. Keep flammable materials away from the heater.

Know that electricity and gas-filled appliances come with risks. Don’t attempt to install them yourself unless you’re trained. Hire professionals to ensure your equipment is safe and efficient.

Accidents can still happen. My friend found this out the hard way when a rag got too close to his gas-powered heater. It was a huge wake-up call about the risks of heating equipment.

Take safety seriously: choose the right heater, install smoke detectors, keep flammable items away, hire pros, and stay vigilant. Ventilate well to avoid embarrassment.

Ventilation and Indoor Air Quality

Ventilation and air quality are key for creating a safe and comfy living/working atmosphere. Ventilation brings in fresh air, while good air quality means it’s free from pollutants, allergens, and other hazardous chemicals.

To reach these targets, various ventilation systems exist. Natural ventilation uses windows and vents; mechanical ventilation uses fans and ducts; mixed mode combines both natural and mechanical elements.

Keeping these systems working well requires maintenance. Filters need to be regularly changed or cleaned to avoid dust buildup that can hurt air quality. Also, be aware of humidity levels, since high levels can cause mold growth and bad air quality.

As the EPA has found, indoor air pollution can be 2-5x higher than outdoor. This emphasizes the importance of proper ventilation and upkeep for a healthy living/working atmosphere.


Selecting the ideal heating system for your garage is essential. You can consider a house furnace, but correct installation and ventilation are needed. Electric heaters are also an option but may not be enough for larger areas. Consider factors like a fuel source, size, HVAC system, and building codes before deciding.

Alternatively, radiant floor heating or unit heaters can be used. Radiant floor heat provides even heating. But, it may need professional installation and cost more. Unit heaters are cheaper and easier to install but require wall or ceiling space.

Make sure that there is enough air intake and ventilation to avoid negative pressure or exhaust fumes. This can be done by installing vents, and registers or opening windows/doors slightly. Following building codes can keep safety issues at bay.

Overall, choose the right heating system for your garage carefully. Don’t opt for an unsafe solution with limited potential, pick wisely.

About the author

Debarghya Roy: A heating systems author, Passionate about energy efficiency and sustainability, Sharing insights and empowering readers through informative blog articles.