How many hours does it take to install a gas furnace?

Author: Rowland Runte II  |  Last update: Friday, January 30, 2026

4-8 hours. Furnace installation in a residential home usually takes 4-8 hours, depending on the complexity of the job. Additional time may need to be added to account for ductwork, electrical, or gas line modifications to properly match the new equipment.

What is the labor cost to install a furnace?

Labor: Typical labor costs can range from $50 - $100 per hour for a licensed technician. Each additional team member will be an additional charge. Depending upon the complexity of the job, a new furnace installation can take 10-15 hours!

How many hours does it take to put in a furnace?

Furnace installation can take anywhere from four to eight hours. It really all comes down to how complex your unique job is. For example, if we have to replace the ductwork, electrical lines, or make modifications to your gas lines, those things can take longer.

Can a furnace be installed in one day?

Most furnace installations can be completed in one day. If you're getting a new type of furnace or adding ventilation and ductwork, this may add a few days to the installation timeline.

How many people does it take to install a furnace?

How many people does it take to install a furnace? It often takes two skilled professionals to install a furnace. This allows the work to be done efficiently because one person handles the installation of the furnace itself while the other focuses on connections, such as gas lines and electrical wiring.

This Furnace Malfunction KILLS PEOPLE! Homeowners Should watch (ROLLOUT GAS BURN FURNACE)

Is it legal to install your own furnace?

In California, installing a furnace or other major HVAC component requires pulling a building permit, which is issued by the city or county. A permit ensures a project is inspected and meets safety and structural standards.

How long does it take to install a furnace and ductwork?

The factors that affect the time frame include the size of the building, the type of installation required, the type of unit needed, and the location of the install. A general idea for the time needed is between one and three days or 24 hours of work.

Can a furnace be replaced in a day?

Yes! Usually a furnace can be installed in one day. However, we just need to make sure that the existing ductwork in your home is in good shape (doesn't require a repair or a replacement). Another factor is the size of the unit that we're installing.

Where is the best place to put a furnace?

If possible, the furnace should be centrally located in the home to reduce the amount of ducting needed which can help save you energy and money. This can be a centrally located closet with big enough clearance to accommodate the unit without limiting access.

Can a handyman install a furnace?

When technicians pass the licensing exam, they are deemed fully knowledgeable in the HVAC field. Handymen won't have an HVAC license, which means they may not even possess adequate training to successfully work on your heating or cooling system.

What is the most reliable gas furnace brand?

The 5 Best Furnace Brands
  • Carrier Furnace: Best Warranty.
  • Lennox Furnace: Best Company Reputation.
  • Bryant Furnace: Best for Durability.
  • Trane Furnace: Most Years of Experience.
  • Amana Furnace: Best for Efficiency.

Why are furnace installation costs so high?

Furnace Size and Efficiency

The size and efficiency of the unit affect the installation cost. Larger furnaces with higher efficiency cost more. This includes both the upfront price and installation fees. An energy-efficient furnace can save you money on heating bills.

Is it hard to install a gas furnace?

Replacing a furnace is a labour-intensive undertaking and is pretty difficult. There are a large variety of factors that need to be considered and accounted for. It is never recommended to replace a furnace yourself as the appliance is a major investment and should be handled by professionals.

How long does a home gas furnace last?

However, most gas furnaces typically last between 15 to 20 years before efficiency declines and repair costs increase, so it's wise to consider replacement around the 15-year mark to ensure optimal performance and safety.

What time of year is cheapest to replace furnace?

For people taking a proactive approach, doing a furnace replacement during the “shoulder seasons” of spring and autumn may offer lower prices, shorter lead times, and a better selection of products and service appointment availability.

How long does it take to remove an old furnace and install a new one?

The good news is that as long as the existing ductwork in your home is in tip-top condition and doesn't require a repair or replacement, the furnace installation should be completed within a day. On average, it takes about four to 10 hours to wrap up a furnace install, depending on the type and size of the unit.

How many people to install a furnace?

Generally, two people will ensure that the job is done correctly, safely, and quickly. This allows them to collaborate and double-check their work before it goes live. If you are not confident about your skills, hiring experienced technicians familiar with the type of furnace you install is always a good idea.

How much is a new furnace and ducts?

Replacing a HVAC system can involve one or both, and it makes a difference, price-wise. According to HomeGuide.com, the average cost to replace the HVAC units is $5,000 to $11,000; to replace the units with ductwork runs between $7,000 and $16,000 in total.

Do you need to replace ductwork when replacing furnace?

You won't need to replace your ductwork if…

Your new furnace will likely have a higher efficiency rating than your old one (advances in technology have made furnaces more energy efficient in general) and include more features, but it can use the same ducts without any complications.

How long do furnace ducts last?

Ductwork typically requires replacement every 10-15 years, and delaying this can compromise airflow and energy efficiency. Visible and subtle signs, including excessive dust, strange noises, and increases in energy bills, can indicate deteriorating ductwork that needs repair or replacement.

Can you claim a furnace on your homeowners insurance?

Your base homeowners policy will cover many types of damage to your furnace. An extra endorsement known as Equipment Breakdown Coverage (EBC) will give you additional coverage for certain types of mechanical or electrical failure.

How much is a furnace for a 1500 square foot house?

Understanding Total Costs

Gas Furnace: $3,000 – $6,000. Electric Furnace: $2,500 – $5,000. Oil Furnace: $4,000 – $8,000.

What percentage of furnaces get installed incorrectly?

Unfortunately, about 90% of HVAC systems are installed incorrectly, according to the North Carolina Alternative Energy Corporation. The nonprofit group studied HVAC installations and compared them to the manufacturer's code and found that an overwhelming number were installed incorrectly.

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