How Long to Install a New HVAC System?

Replacing an old HVAC system is a great way to reduce your energy costs and keep your home comfortable. However, it’s important to make sure the new system is installed properly for maximum efficiency.

The first step is to check for state and local rebates and incentives. Then, review the type of system you need and consider a few other factors that will affect installation time.

The Size of Your Home

The size of your home will play a huge role in how long it will take to install a new HVAC system. Getting the right size of system is critical to saving money, keeping your house comfortable throughout the year, and ensuring that it functions properly. When calculating the size of your system, it is important to consider the number of people living in your house and how much heat they produce. In addition, you should also consider your heating and cooling needs as well as your energy use for appliances like the stove and refrigerator.

If you are doing a change out installation where only the air conditioner unit is being replaced, it won’t take as long as installing a complete system that includes the ductwork. If you need to replace the ductwork as well, it will add on a few days to the time frame of your project. This is because the technicians will need to reroute and rewire some of the electrical connections.


Your home’s ductwork is like the veins and arteries of your body, carrying unconditioned air to your furnace for conditioning and then transporting it throughout the house. If your ductwork is leaking, not properly insulated or even old, it can lead to hot and cold spots in your home and inflated utility bills.

In addition, your HVAC system’s ductwork must be properly designed and installed to ensure it will work well. The wrong duct size or placement can lead to problems such as noise, dust, drafts and humidity.

Replacing just the air conditioner unit and keeping your existing ductwork will take less time than a full system replacement or duct installation. However, if your ductwork needs to be replaced or rewired, this will take longer. It can also take longer if your new HVAC system is larger than the old one and it has to be installed in a difficult-to-work-in area of the house or building.

The Type of System You Need

HVACs (which stands for heating, ventilation and air conditioning) are systems that move air between indoor and outdoor spaces, heat your home in winter, cool it in summer and clean your indoor air. They are also responsible for maintaining humidity levels at optimal comfort levels.

Choosing the right HVAC system for your home will depend on many factors, including size, insulation, energy usage and preferences. An HVAC professional can perform a load calculation to help you determine what size unit is needed for your home.

If you’re only replacing an existing air conditioner, it may take one day or less. However, if you’re adding central air to your home or installing it in a building with a high roof, it will take longer. The ductwork will need to be installed and this takes time. The location of the air handling unit, controls and exhaust fan will also affect the installation time. These should be easily accessible and not require the use of a ladder or removal of ceiling tiles.

The Contractor You Hire

If you’re replacing an old HVAC system, it’s important to get a local contractor that has good reviews. They’ll also be more familiar with local building codes, permits and other requirements. They’ll also be able to provide more accurate estimates about how long it will take to install the new system.

If your old HVAC system is constantly breaking down, it’s probably time to invest in a replacement. This will save you money in the long run and make your home more comfortable. It will also increase your property value if you’re thinking about selling it in the future.

Replacing the system and ductwork will take longer than just changing the unit, but it’s worth the investment. A new system will cut your energy costs and improve the overall quality of your home’s air. The investment will pay for itself many times over the new system’s lifespan. Remember that a high-efficiency HVAC system can cut your electric bills by up to 20%.

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