How Long Does It Take To Install A Furnace? Essential Guide

In this blog post, we will discuss the installation, maintenance, and factors affecting it in detail.

How Long Does It Take To Install A Furnace?

How Long Does It Take To Install A Furnace

The installation of the furnace depends on its type and it usually takes around 6-8 hours to install it properly.

Factors that affect furnace installation time

To ensure the installation of a furnace with the right size and capacity in your home, it’s critical to understand the factors that impact the installation time. 

Size of the furnace and square footage of home

The size of a furnace and the home it is being installed in are vital factors that affect installation time. 

Bigger furnaces are needed for bigger homes, meaning they take longer to install.

For example, 

A 1,000-1,500 sq ft home may require a furnace with a power output of 40,000-60,000 BTUs. 

Whereas, a home with 2,000-2,500 sq ft may need a furnace capable of producing 80,000-100,000 BTUs or more.

To ensure fast installation without sacrificing quality:

  • Measurements must be taken before buying any equipment or scheduling installation services – this eliminates potential delays due to the wrong fit.
  • Qualified technicians with experience in furnace and HVAC systems can speed up the process.
  • Preparing the site beforehand helps with space constraints and provides easy accessibility – also speeding up the process.

Type of furnace and AFUE rating

Considering the type of furnace and its AFUE rating affects installation time. Gas furnaces take longer, 6-10 hours. 

Electric furnaces usually take 4-8 hours. Higher AFUE ratings mean more complex components and longer installation.

TypeAFUE RatingInstallation Time (Hours)
GasAbove 90%8-10 

Complexity of installation process 

The furnace installation process is complicated due to various factors, like ductwork modifications and gas line installs. This can increase install time. 

Here’s a table showing these challenges and their impacts:

ChallengeImpact on Install Time
Ductwork ModsIncreases Time
Inaccessible AreasIncreases Time
Old Furnace RemovalIncreases Time
Gas Line InstallIncreases Time

Additional time required for old furnace removal and disposal

Removing and disposing of an old furnace takes more time than normal. This is because it needs to be taken apart properly and safely disposed of. 

Location can also increase time taken for removal and disposal. If it’s in a tight space or hard to access due to things surrounding it, it’ll take longer.

A professional contractor can help speed up the removal process and make sure hazardous materials from older furnaces are handled safely.

Steps in the furnace installation process

To ensure a smooth furnace installation process, you need to follow several steps starting from the home inspection and heat load calculation to testing and ensuring proper draft control and combustion. 

Home inspection and heat load calculation

The first step to furnace installation is evaluating the house and calculating the right heat load. 

This starts with an inspection of the home. A technician assesses the size, orientation, and insulation of each room. Then, they use software to calculate the needed heating capacity. 

This depends on the local climate, building structure, and window size. It’s important to get this right, so the furnace works efficiently.

The technician also looks at upgrades, like adding insulation or sealing air ducts. After gathering the data, they pick a furnace model that fits the budget and needs. 

Choosing the right size and type of furnace

Choosing the correct size and type of furnace is key for optimal heating in any home or business. 

You must consider the size of the property, its location, insulation, ductwork, and fuel types.

For each factor, there are certain considerations. For instance, a larger property requires a bigger furnace. Insulated buildings need smaller ones. 

Those in colder climates need more power. Good ductwork is essential for efficient operation. And, make sure the furnace works with your fuel source.

Making necessary modifications and repairs

Making adjustments and fixing the present equipment is essential for a successful furnace installation. 

Here are 6 steps to help:

  1. Turn off Power: Cut off power to the furnace before starting.
  2. Inspect/Clean Ductwork: Look for leaks or damaged parts. Seal with duct sealing material.
  3. Check Gas Line Connections: No gas leaks? Great!
  4. Install New Parts if Necessary: Air filters, humidifiers, dehumidifiers and thermostats.
  5. Reconnect/Secure Components: Pipes & ducts; use screws or brackets for safety.
  6. Test Run Furnace: See if it works correctly.

Installing the new furnace unit and connecting to utilities

Installing a furnace unit and connecting it to utilities is an essential part of setting up your home heating system. 

It requires several steps to be taken for optimal performance, durability, and safety. 

Here’s a six-step guide to assist you:

PreparationSwitch off the circuit breaker near the furnace area to turn off the power supply.
RemovalCarefully remove your old furnace without damaging any parts or pipes.
InstallationPlace your new furnace where it should go. Make sure it is leveled accurately. Connect the ducts following the specifications for maximum energy efficiency.
ConnectionsProperly connect gas pipes or electric cables to meet your heating needs. Check for gas leaks after installation.
VentingConnect the vent pipe for safe exhaust of any toxic gasses produced by burning fuels. It should be correctly sized and placed to avoid any hazardous gasses entering your living areas.
Switching onAfter a professional double-checks everything, switch on the power supply from the main switchboard. Test if it works properly.

Testing and ensuring proper draft control and combustion

The draft control and combustion process is a must for furnace installation. Inspecting and testing all related components, such as the burner assembly, blower motor, heat exchanger, flue system, and ventilation components, is needed.

A manometer device is used to measure pressure changes in the furnace. This ensures maximum efficiency and no dangerous levels of carbon monoxide gas production. 

The technician will also check if there are any blockages in the furnace path, to prevent health hazards.

Hiring a professional contractor for furnace installation

To ensure a smooth furnace installation at your home, you need to hire a professional contractor. 

With several factors affecting the installation time, cost, and complexity of the process, the right HVAC company can help you make informed decisions.

Researching and choosing the right company

Check reviews, company websites, and certifications. Pick a company that fits your values, with extensive warranties and experienced staff. 

Ask for references from satisfied customers. The right installer will give you an efficient heating system and save you money in the long run.

Getting an estimate and understanding the cost breakdown

When looking to hire a professional to install a furnace, it’s essential to get an estimate and comprehend the cost breakdown. 

Here are a few tips:

  • Ask for a written estimate
  • Check for hidden fees
  • Understand furnace installation costs
  • Consider extras or upgrades
  • Beware lowball quotes
  • Avoid payment upfront

Ensuring safety and quality of installation

Secure, quality furnace installation requires professional contractors. They must comply with safety codes and regulations, and accurately install the equipment.

Contractors investigate your home’s heating demands. They ponder the size, insulation, heating needs, location, etc. 

Furthermore, contractors offer post-installation services like inspections, as well as advice on maintenance practices that boost efficiency and furnace life expectancy.

Maintaining the furnace for optimum efficiency and longevity

Maintaining your furnace is vital to keep it efficient and operational. This can help lower utility bills and increase its lifespan. 

Change air filters and schedule maintenance with a pro for better efficiency. Clean the heat exchanger and inspect the blower motor annually. 

Carbon monoxide testing is important too. It’s odorless and tasteless, so it’s a potential hazard if not detected. 

Install a CO detector near the furnace or air supply registers to alert you of problems. 

Remember to switch off your furnace’s power when cleaning or doing simple maintenance. 

Regularly doing these tasks will mean any problems will be found early, avoiding expensive repairs. 

Time and cost considerations for furnace installation

To help you understand the time and cost considerations for furnace installation, let me share some information on the average installation time and estimated cost. 

Average installation time and estimated cost

When it comes to furnace installation, time and cost are key decisions. A good grasp of these factors can help avoid stress. 

To give a better idea, a table has been made showing the estimated average time and cost.

Gas Furnace4-8 hours$2,500-$7,500
Electric Furnace6-10 hours$1,500-$6,000
Oil Furnace8-12 hours$5,500-$10,000

Factors that can increase installation time and cost

Factors affecting time and cost for furnace installation can really add up. Consider these factors to make informed decisions and prepare accordingly.

Furnace type, ductwork, location, and efficiency can all increase installation time and cost. 

For example, high-efficiency furnaces require additional venting and condensate lines.

Remember to think about other details like electrical wiring or plumbing too. Hire licensed professionals with safety knowledge to install your furnace.

Upgrade your furnace and save money at the same time! Warmth can be bought with a little planning.

Potential energy bill savings with a new, efficient furnace

An efficient furnace installation can reduce energy bills. 

Here’s how:

  • Improved efficiency cuts consumption and costs
  • Advanced tech in newer models uses less energy than older units
  • Upgraded insulation allows the furnace to work to its full potential and saves energy
  • Regularly replacing filters reduces the workload on the furnace, making it more efficient
  • Systematic maintenance prolongs a new furnace’s lifespan and keeps it performing optimally

Options for financing or budgeting the installation cost

Homeowners pondering furnace installation may be keen to discover how to finance or budget for it. 

Multiple choices are accessible, such as payment plans, home equity loans, and rebates or incentives. 

It is vital to check out these options and decide which suits their financial situation best.

Payment PlansHome Equity Loans
High-Interest Rates & ChargesHigh Interest Rates & Charges

Importance of understanding the furnace installation process and considerations

It’s essential to know the details of furnace installation to ensure success. Without the right knowledge, mistakes may cause health hazards or fatalities. 

Considerations, such as location, capacity requirements, fuel type, ductwork, zoning regulations, and standards compliance, must be taken into account. 

It’s important to learn all the details of the process to ensure success. Get advice from experts or ask for personal testimonials before proceeding with an installer service. 

Benefits of hiring a trained technician for installation and maintenance

When selecting a technician, look for someone who’s highly qualified, experienced and licensed, with excellent reviews.

Here are some advantages:

AccuracyAn expert can tackle complex installation with accuracy.
Saving TimeHiring a proficient technician ensures time and resources are saved.
Cost-efficientA professional can spot issues quickly and suggest cost-efficient options.
ExpertiseAn experienced technician has know-how in all types of equipment.
WarrantySkilled professionals guarantee proper installation and the warranty’s full cycle.


To give you the final takeaway, it is crucial to understand the furnace installation process and its various considerations, such as the size, and complexity of the system. It is equally important to hire a trained technician for installation and maintenance, as it will ensure that your system is in good shape and runs efficiently.