How Long Does It Take To Install AC And Furnace? Vital Tips

Factors that Affect HVAC Installation Time

To ensure timely and efficient HVAC installation, there are several factors that must be taken into consideration. With the right installer and equipment, the installation process can go smoothly without any issues. However, the following factors can affect the HVAC installation time: 

  • Size and shape of the home
  • Type of HVAC system
  • Type of AC unit
  • Type of furnace
  • Line set and refrigerant
  • Ductwork and coil
  • Location of the HVAC unit
  • Load calculation, 
  • Cleaning and service
How Long Does It Take To Install AC And Furnace

Image: Fully installed HVAC System

By understanding these factors, you can make informed decisions and ensure your HVAC installation goes smoothly.

Size and shape of the home

The size and shape of a home can hugely impact the amount of time it takes to install an HVAC system. A bigger house needs more ducts, vents, and thermostats installed, whilst an oddly-shaped one can cause problems due to hard-to-reach areas. Even high ceilings can be tricky. It’s not just these factors that matter though, existing infrastructure, accessibility, complexity of the job, and location also count.

Type of HVAC system

Different HVAC systems can impact set-up time. Let’s explore some of those factors.

  • Central air systems take 2-5 days to install.
  • Ductless mini-split systems need 1-3 days and 
  • Furnace and air conditioner connection systems need 1-2 days.

The type of system matters for the duration. Plus, the complexity of the room affects installation time. Always think about the average installation times when picking your heating or cooling solution. 

Type of AC unit

Different AC units can take different amounts of time to install. Window units, for instance, can be done in 1-2 hours while packaged central air conditioners take 8-12 hours. It’s important to consider the location, access, and ductwork when figuring out installation time.

When it comes to HVAC installs, it’s wise to choose a skilled company. Also, scheduling during milder weather can help speed up the process. Factoring these elements into your decision will ensure a smooth installation.

Type of furnace

Different types of furnaces can hugely influence the time taken to install HVAC. What type of furnace you choose can alter the final cost and installation time.

A table gives us info on the factors that affect the installation time for different furnaces. Factors like size of unit, intricacy of the installation, and extra components needed vary depending on the type of furnace.

Type of furnaceInstallation Time Factors
Gas FurnaceSize & complexity, Gas lines, Venting conditions
Electric FurnaceElectrical links, Ductwork modifications
Oil FurnaceTank size & spot, Fuel lines & connections, Chimney or flue needs

It’s vital to remember that every type of furnace has unique characteristics that decide how long it takes to install it properly. For instance, gas furnaces may need more work with gas lines and venting compared to electric or oil-powered units.

Always consult a trustworthy HVAC expert before picking your furnace. This will make sure you opt for one that fits your home’s needs and corresponds with local building codes. This can save money and ward off future complications.

Line set and refrigerant

Factors like line set length, refrigerant type, and copper tubing type all have an impact on installation time. 

  • A longer line set means a longer installation. Refrigerant availability and type can also greatly influence installation times.
  •  Copper tubing with a bigger diameter requires more refrigerant which increases installation time.

It’s important to remember that the most common options are not always the best for a project. Consulting professionals is always recommended.

Ductwork and coil

Efficient Ductwork and Coil installation is key for successful HVAC unit installations. 

  • Proper sizing, placement and sealing can make the process speedy and fault-free. 
  • High-quality coils reduce repairs and replacements, which saves time. Aligning components during installation guarantees peak performance.
  • Duct length is essential; long ducts weigh more, thus requiring more time to install correctly. Sealing joints without any gaps or cracks is time consuming, but boosts efficiency in the long run.

The National Institute of Standards and Technology (NIST) report, “HVAC installation duration can be reduced by 30% with preplanning.” Therefore, it’s best to get professional help before starting, to prevent errors and lower lead times.

Location of the HVAC unit

The location of an HVAC unit is key to the installation process. It should be accessible, ventilated and free of obstacles. The distance between the outdoor and indoor units also affects installation, as more wiring and piping is needed for longer distances.

Different locations require different techniques. Installing on a rooftop may call for safety equipment like harnesses. In basements or crawl spaces, extra time is needed for inspection and cleaning.

The location’s unique requirements can affect installation time. Per Energy Star, an inefficiently installed HVAC system can waste up to 30% of energy. So, it is essential to hire reliable professionals who know all the proper procedures. 

Load calculation

Load calculation is a critical part of HVAC system design. It has been this way since ancient times, but only recently has technology advanced enough to accurately measure and calculate it. Below is a table summarizing the impact certain factors have on load calculation:

FactorsImpact on Load Calculation
Building SizeBigger = more cooling or heating capacity
InsulationPoor insulation = more heating or cooling needed
LocationClimate affects temp requirements
Number of OccupantsMore people = more body heat & breathing

It’s also worth noting that items such as appliances and lighting fixtures can also influence load calculation. 

Cleaning and service

Cleaning and servicing your HVAC system is essential. It can prevent breakdowns and reduce the need for costly repairs. A professional technician can spot potential problems during maintenance. This will help increase the lifespan and efficiency of the system. Plus, it can improve indoor air quality by removing dust, allergens, and other contaminants.

Factors such as building size, equipment selection, ductwork design, and usage can impact the installation time of an HVAC system. In one case, a commercial facility dealt with an aging HVAC network which caused frequent failures, resulting in discomfort for employees. The issue was only resolved after proactive maintenance strategies were implemented by experts. This improved the productivity of staff, as there were no unexpected breakdowns.

Time Required for a Typical Air Conditioner Installation

To install an air conditioner and furnace, many factors such as the size of the HVAC unit, the shape of the house, and the type of equipment play an important role. This section will tell you about the time required for a typical air conditioner installation and provide you with all the information you need regarding the time frame for each type of installation.

Full system replacement

Renewal or replacement of an air conditioning system can be daunting. Cost, time and effort are all factors to consider. Entirely removing the old system and installing a new one is a full system replacement. This usually takes up to two days.

  1. Day one includes dismounting and disposing of the old equipment, rerouting duct work and electrical connections. 
  2. Day two involves putting in the new air handlers, condenser units, thermostats and testing all components.

Accessibility to homes may extend time and lead to unexpected costs. It’s important to seek professional services due to its complexity. With over three decades experience, our qualified technicians will ensure your new unit is running quickly, with minimal interruptions and costs

Half system replacement

Replacing half of your air con system is a challenge. Planning and execution are key. Time needed depends on house size, ducts, insulation and other components.

Choose a professional contractor for quality service and quick installation. They’ll assess existing HVAC and source new parts. Average job time is 4-6 hours, but it can take up to 8 hours if complex or unexpected issues arise.

Clear obstructions around the unit and make workspace available. Keep pets and kids away for a smooth installation process.

Split air conditioner installation

Installing a split air conditioner can be super easy – if you know what you’re doing. Here’s the lowdown on 3 simple steps to get the job done:

  1. Choose the spot: Find an area close to both outdoor & indoor units with access to electric wiring & drainage pipes.
  2. Install the indoor unit: Hang it up, connect the electric wires & refrigerant lines as per manufacturer’s instructions.
  3. Install the outdoor unit: Connect the refrigerant lines & electric wires, then place it on a sturdy base at least 15 cm from the ground.

Remember that different brands & models of air conditioners have different installation requirements. If you don’t feel confident, consider getting a pro to help you out.

Installing a new air conditioner to replace an old unit

Want a smooth installation? Here are 3 steps:

  1. Preparing the Site: Turn off the old system. Disconnect from power. Clear furniture & trim bushes for installer’s tools & equipment.
  2. Installing the New A/C Unit: Remove the old unit. Place the new one. Connect all pipes. Attach hose clamps.
  3. Testing: Turn on power to check if it works. Test airflow & inspect refrigerant levels.

Before setting up, check if upgrades are needed. Consider energy efficiency, size, & tax credits. This will increase comfort & reliability, while reducing future maintenance costs! Oh, and good luck with furnace installations!

Time Required for a Furnace Installation

To determine the amount of time required for a furnace installation, there are several factors to consider. 

  • Full system replacements
  • Half system replacements
  • Inspection and replacement
  • Changing out an old unit 

Each subsection has a distinct time frame and necessary steps that must be taken into account when installing or replacing a furnace. In this article, we will provide you with all the necessary information regarding the time required for a furnace installation.

Full system replacement

Replacing an entire heating system? It requires planning, decision making and patience! Timing is key. Here’s a breakdown of how long it usually takes:

TaskEstimated Time
Initial Consultation & Assessment1-3 hours
Purchasing Equipment & Material1-2 days
Removal of Old System4-6 hours (1st day)2-3 hours (2nd day)varies depending on size/type of old system
Ductwork Inspection and Repairsif needed
May vary depending on unit type and furnace location
The Installation of New Unit, Fuel Source Connection,& Thermostat Wiring
Fuel Source Testing/Mechanical Room Clean-uptypically done on last day
Total Estimated Time1-3 Days

The table offers an estimate, but doesn’t include delays or adjustments. It could vary due to the age of the house, location, and size of the home. Additional time may be needed for remodeling or if backup heat is installed. Certain processes may take longer than expected based upon HVAC design calculations, follow-up inspections, weather conditions, permit processing times or additional discounts resulting from efficiency upgrades.

Half system replacement

Swap out your old furnace and say goodbye to costly energy bills! But what’s the time required for a furnace installation? Here’s what you need to know.

  1. Step 1: Removal – Get the right tools and skills to avoid damage. This process usually takes 2-4 hours.
  2. Step 2: Installation – Connect the new half to the existing system. HVAC specialists need 4-6 hours.
  3. Step 3: Testing & Maintenance – After installation, the technician will run tests and suggest maintenance steps. Allow an extra hour or two.

Every situation is unique, so times may vary depending on furnace type, complexity, equipment location, accessibility, and other factors. Consult with a professional technician today to learn about half-system replacement and improve your furnace efficiency.

Changing out an old unit

Replacing an old furnace isn’t easy. It takes time, depending on the system chosen, furnace size, and job complexity. But follow these steps and your installation will go smoothly.

A 5-Step Guide To Changing Out An Old Unit:

  1. Get a quote from a reliable HVAC contractor who specializes in furnace installations.
  2. Choose a new furnace that fits your heating needs and budget.
  3. Clear obstacles and turn off electricity, gas or oil lines leading into your old unit.
  4. On installation day, watch as your technician dismantles and removes your old unit.
  5. Bring in the new system and install it correctly.

Consult reputable installers for answers to all your questions. Enhance the safety and comfort of your home this season by hiring professional technicians for exceptional quality services.

Inspection and replacement

To guarantee efficiency and longevity of the furnace, it is essential to carry out regular inspections and replacements of its parts. Ignoring this may result in significant damage and costly repairs. It is suggested to have a professional check the following:

  • Air Filter: Replace every three months to maximize its performance.
  • Pilot Light: If flickering or going out frequently, contact a technician to investigate the gas line or valve.
  • Electrical Components: Inspect for fractures, chips, or frayed wiring that may raise safety concerns.
  • Burners: Cleaning rust buildup helps to reduce energy bills.

A technician should be consulted to avoid unintended destruction of furnace components during maintenance. Regular inspection averts potential unexpected expenses from breakdowns. 

HVAC Installation Process

To ensure a smooth HVAC installation process for your new air conditioner or furnace, you need to know the right equipment and tools required, the steps involved in the installation process, how long the installation can take, the role of technicians and installers, and the importance of contacting a reputable HVAC company. In the following subsections, we will briefly describe each of these factors so that you are informed about everything that comes into play during the installation.

Equipment and tools required

Getting the right tools and equipment is key to successful HVAC installation. Here are the must-haves:

  • Power drill, bits for metal/wood, screwdrivers, and pliers
  • Hacksaw blade to cut through ductwork, tube cutter to slice copper pipes
  • Measuring tape, levels, and squares to guarantee proper system alignment

Remember to dress appropriately and protect your eyes/ears with goggles/earplugs. Be aware of your surroundings as HVAC installation involves heavy machinery.

In addition to the above, some special details require focus. Knowing about thermostats, zoning systems, or air filter locations may greatly impact the quality of the HVAC system.

Steps involved in the installation process

Installing HVAC systems is a tricky task. Here’s what you need to know about it.

  1. First, you need to pick the right system for your needs. HVAC professionals will assess your space and suggest the best equipment. They will consider factors like square footage, insulation and number of rooms.
  2. Next, you must prepare your home for installation. This involves getting rid of old equipment, cleaning ductwork and making repairs or upgrades.
  3. Then, it’s time to install the new equipment. The professionals will carefully attach wires, pipes and ductwork to make sure everything works properly.
  4. Finally, they will inspect the installation job to check if all is up to code.

During installation, HVAC repair technicians may discover issues that require repair work or follow-up maintenance. Homeowners should keep their budget in mind and find tailored solutions for good air quality.

How many days the installation can take

Installing a HVAC system takes between 1-5 days, based on project size and complexity. This involves several steps; 

  • First, a site inspection is done to figure out the best spot for installation and assess existing ductwork. 
  • Then, old equipment is removed and new items installed, such as the furnace/air handler, condenser unit, and thermostat. 
  • Modifications to the ductwork may be required. Connections are made and tested before powering up the system.

Technicians do tests to make sure the system is functioning properly. They check refrigerant levels, test electrical connections, and check airflow. They will explain how it all works and the programmable options before leaving.

It isn’t just about putting in new equipment – it also needs expertise in design, engineering, and construction. 

The Role of Technicians and Installers

HVAC systems need expert technicians and installers for proper setup, maintenance and support. 

  1. First, they evaluate the space for heating or cooling. 
  2. Next, they recommend a suitable system based on room size, climate and budget. 
  3. Then, they begin to assemble the different parts of the system. They handle the wiring and control systems too. 

It’s important that only certified technicians perform these jobs. Before hiring anyone, make sure they have the proper qualifications. 

The importance of contacting a reputable HVAC company

When it comes to HVAC installation, it’s critical to contact a reputable company. 

  • These firms have knowledge and proficiency in the field, along with the right tools and equipment. 
  • They provide a warranty for their services and products, meaning any damages are covered. 
  • They do a comprehensive assessment of your home before starting.

Not all HVAC companies are the same, so research is crucial. Energy Star explains how incorrect installation can decrease efficiency by 30%, costing homeowners thousands in the long run. Hiring a dependable firm with positive reviews promises quality work, peace of mind, and energy savings.

Factors that Play into the Efficiency of an HVAC System

To ensure the efficiency of your HVAC system, it’s important to consider several factors when installing it. When it comes to power usage and cost, draft control and line set, components of the HVAC unit, information on condenser and coil, HVAC maintenance, and cleaning, all of these play a crucial role in keeping your HVAC system in its best condition. These factors need proper attention during the installation process and regular servicing to ensure maximum efficiency and longevity.

Power usage and cost

HVAC systems have a major influence on their power usage and cost. Factors like size, age, frequency of use, and type of equipment have a big impact. Check out the table for details.

FactorsImpact on Power Usage and Cost
SizeOversized or undersized air conditioning units use more energy. Finding the right size is key to comfort and cost efficiency.
AgeOlder HVAC systems consume more energy than newer ones, leading to bigger power bills.
Equipment TypeHigh-efficiency equipment can cut costs significantly, thanks to its varying energy efficiency ratings.

Maintenance also helps reduce power usage and cost. Regular filter replacements, duct cleaning, and thermostat adjustments can improve efficiency. The US Department of Energy says heating and cooling account for up to 48% of a typical home’s total energy consumption

Draft control and line set

Draft Control and Line Set installation are essential for proper HVAC performance. 

  • Reducing air infiltration and managing interior moisture levels are key benefits of draft control. 
  • The correct diameter selection and slope of the line set ensures proper refrigerant flow and uninterrupted transfer between coils and the unit.
  • Balancing ventilation and exhaust systems improve energy efficiency and reduce waste, according to the EPA. 

Proper installation is critical in order for the system to function properly.

Components of the HVAC unit

A well-functioning HVAC system needs components that collaborate smoothly to guarantee efficiency. These include the thermostat, ductwork, air filter, condenser coil and evaporator coil. To highlight the significance of these parts and explain them better, we made a table. It shows the functions of each component:

ThermostatTemperature control & regulation
DuctworkAir distribution in rooms
Air FilterRemoves dust & other airborne particles
Condenser CoilMoves heat from indoors to outdoors
Evaporator CoilAbsorbs indoor heat

It’s key to remember that many things can affect an HVAC’s efficiency. Especially installation quality. So, it’s essential to hire a professional for installations or services.

Information on condenser and coil

The condenser and coil are important parts of an HVAC system. The condenser heat exchanger transfers heat from the refrigerant to the outside air. The coil, an evaporator, absorbs heat from indoor air.

The size of the condenser should match the cooling load of the system. The material must withstand harsh weather. The coils come in different types–chilled water, hot water, and steam. Each needs specific maintenance.

Besides the details above, proper design is also key. A bad system can reduce airflow or bad heat transfer, causing uncomfortable temperatures and high energy bills.

The US Department of Energy states regular maintenance improves efficiency by 10-30%. Annual tune-ups with professional technicians are necessary to ensure optimal performance and prolong the condenser and coil lifespan.

HVAC maintenance and cleaning

Regular upkeep and cleaning of HVAC systems are essential for optimal performance. Neglecting these tasks can lead to higher energy bills and inefficient heating and cooling. Here are some tips for maintenance and cleaning:

  • Change air filters every 1-3 months to avoid dirt buildup that affects airflow.
  • Clean the evaporator coil yearly to prevent mold and maximize heat transfer.
  • Clear any clogged drains or pipes to ensure proper drainage.
  • Check refrigerant levels annually as low levels can lead to higher energy costs.
  • Keep air ducts clean and remove any debris or dust.

Hire a professional contractor to perform routine inspections. Poorly maintained systems will need replacement, costing extra. Check thermostat batteries and electrical connections to extend the unit’s lifespan

Cost of HVAC Installation

To calculate the cost for installing an HVAC system such as an air conditioner or furnace, there are several factors you need to consider, including the type of system and who is doing the installation. This section will brief you on ‘Cost of installation for different types of HVAC systems’, followed by ‘The role of the contractor in determining the cost’. And also share some tips for ‘How to save money on HVAC installation’. By the end, you’ll have a better understanding of the costs involved, and what factors can help you keep expenses under control.

Cost of installation for different types of HVAC systems

When it comes to HVAC installation, costs can vary. To make it clearer, we made a table.

System TypeAverage Cost
Central Air Conditioning$3,000 – $7,500
Ductless Mini-Split Air Conditioning$1,500 – $3,000 per indoor unit
Furnace and Air Conditioner Combo$2,500 – $15,000+
Heat Pump System with Electric Furnace/Air Handler$5,000 – $10,000+
Geothermal Heat Pump System$10,000 – $25,000+

You can see from the table that there is a big difference in cost between the systems. But, the price also depends on various factors such as location and complexity of installation.

The role of the contractor in determining the cost

HVAC contractors, experienced and qualified, are key to getting the cost of installing a heating, ventilation, and air conditioning system right. They evaluate the needs, scope of work, features, and budget of clients. They manage everything from material to labor cost and permits, ensuring all safety standards are met.

The type and size of the unit is the prime factor that decides the installation cost. Contractors consider factors such as size of property, number of rooms for cooling/heating, ductwork requirements, accessibility and zoning systems. Plus, they consider client preferences such as energy efficiency ratings, smart controls, noise levels or customization options for different zones.

To get optimal performance and improved longevity, contractors give tips like choosing an efficient HVAC unit with high SEER rating or regular maintenance to reduce future repair costs.

How to save money on HVAC installation

When it comes to installing HVAC systems, cost can be a worry. Here are six ways to save money:

  1. Research and Compare: Look for the most affordable option by researching different systems.
  2. Downsize: Get the right size system for your space to avoid extra charges.
  3. Maintain Your Existing System: Maintaining your system can be more cost-effective than replacing it.
  4. Budget: Plan ahead and budget for installation costs.
  5. Hire A Professional: Hiring a pro will save money in the long run.
  6. Take Advantage of Special Offers: Keep an eye out for discounts or deals.

An energy-efficient system could save you money in the long run. Consider SEER ratings and ENERGY STAR certifications when selecting.


To ensure a successful installation of your AC and furnace, you must consider different factors that can affect the time frame for the installation. As mentioned earlier, there are several steps involved in the installation process. Based on the size and type of HVAC system you choose, the complete HVAC installation can take up to several days.