How Long Does HVAC Installation Take?

The amount of time needed for an HVAC installation varies based on a few different factors. It may be difficult for an HVAC technician to give you a time frame without first seeing the home and the area that the unit will be installed in. Some factors that will change the time frame include:

  • The size of the home or building
  • The type of installation (simple change out, ductwork replacement, etc.)
  • The exact type of unit
  • The location of the install

How The Size of Your Home Affects Installation Time

The size of your home is one of the biggest factors when determining how long HVAC installation will take. Expectedly, the larger the home, the longer the time frame will be. This is because bigger homes require larger HVAC units and sometimes may require multiple units.

How The Type of Installation Affects the Time Frame

Simple System Change Out

If you need a simple system change out, the required time will be shorter than if your installation requires ductwork replacement a full system replacement. A changeout occurs when you are having a new HVAC system installed, but all the necessary equipment is already in place from your old unit. This could take as little as one day of work.

Full HVAC System Installation

If you need ductwork replaced, or a full HVAC system installation, the process will take longer than it would for a simple change out. The longer time frame happens because the technician may have to replace the ductwork or rewire the thermostat. There may be other issues that the technician will run into with a full system install, as well, so the time frame is harder to narrow down for this situation. Typically, a full HVAC system installation will take anywhere from three to five days to complete.

How The Type of Unit Affects the Time Frame

There are different types of HVAC units available for installation, and this can affect the required time frame. A traditional central air conditioning unit will take longer to install than a mini-split system will if a full system installation is necessary.

How The Location of the Unit Affects the Time Frame

If you live in a condo or other building with a high roof, you can likely count on a little extra time added to the time frame. These types of buildings usually require a crane to lift the HVAC unit onto the rooftop for installation. Many times, an HVAC company will have extra technicians around for bigger installations like this, so time isn’t always a factor but, just in case, you should plan for more time.

Final Thoughts On How Long It Takes For An HVAC Installation

It is difficult to say how long an HVAC installation will take without specific details. 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. If you want a more exact time frame, call us today at 408-295-2182, so we can discuss the details.

What Should You Look For In Your Santa Clara HVAC Installation Contractor?

It’s every entrepreneur’s dream to create a thriving business catalyzed by a cool and productive workplace. Not only does such a unique environment promote interactive and innovative discussions but also serves as an exceptional setting to like-minded entrepreneurs. With fluctuating temperatures in Santa Clara, it makes total sense installing a new heating and ventilation unit or better yet, making prompt arrangements to replace your defective model with a new one. Before dipping into your pockets and parting with your hard-earned money, here are a few pointers that you need to consider.

What to Look For In an HVAC Installation Contractor

Licensing and Vast Experience

The best HVAC units are widely considered to command hefty prices and the benefits of hiring a seasoned expert to execute this task cannot be stressed enough. Before any potential individual is authorized to engage in HVAC installation in Santa Clara, they must be licensed and possess ample experience as a testament to their expertise. As the business owner, you need to ascertain your expert’s experience by inquiring about past projects conducted with precision. While being in the business for a substantial duration doesn’t necessarily serve as a guarantee for an exceptional job, it definitely plays an essential role in instilling stability and confidence in their capacity to deliver unmatched results.

As the business owner, you might want to go an extra mile by ensuring that they are certified by relevant institutions preferably the North American Technician Excellence (NATE) to ascertain their competence and credentials to completing the project with finesse. Not only that, you need to understand the existence of a multitude of experts in the industry with diverse skills. However, it’s advisable to ensure that your contractor is well versed with air balancing and precise handling of refrigerants.


Seeking referrals has consistently offered benefits commonly unknown to novice entrepreneurs. To obtain optimal value in return, you need to ask for referrals and references from past clients, call them up and inquire about the contractor’s performance. Remember, ideal contractors have developed an unrivaled reputation for performing a clean installation as a reflection of their expertise and to maintain hygiene at a client’s property.

Rebates and Special Offers

Making informed inquiries about rebates and additional offers is widely considered to be a hallmark of shrewd entrepreneurs. Since HVAC installation can be a costly project based on the brand purchased and the contractor’s fee, it makes total sense inquiring about energy-efficient models and discounts on specific purchases designed to make your shopping and installation process much easier than before.

O.C. McDonald in Brief

At O.C. McDonald, we have consistently gone above and beyond to develop high-quality and efficient HVAC units for residential and commercial buildings. Our broad experience spans across sheet metal fabrication to gas fitting. Don’t hesitate to contact us today at 408-295-2182 and let us help you install an ideal HVAC unit guaranteed to provide unmatched cooling comfort at your workplace.

What are the steps for HVAC installation?

Nothing is more important than the quality of your new HVAC system installation. It drives the longevity of your equipment, your indoor comfort and your energy bills. Before you sign a contract with an HVAC company, be sure that they follow the best industry practices.


Beware of the contractor who goes by the size of your existing HVAC system for your replacement. A reputable contractor will conduct a load calculation using Manual J software by assessing the following factors before suggesting a system size:

• Cubic footage
• Attic and wall insulation levels
• Size, quality and placement of windows
• Floor plan design
• Air infiltration rates
• Landscaping factors
• Family size and ages
• Preferred indoor temperatures
• Number and use of appliances that create heat indoors

Each of these conditions affects how energy efficient your home is. Once the technician enters the data, the software returns recommendations about the size your system should be.

An HVAC system that’s too large or small won’t run as efficiently as one that’s the optimal size. If you install one that’s too large, it will run in short cycles that lower your comfort, leave humidity behind in the summer, drive up your energy bills, and need more repairs. A system that’s too small probably won’t be able to keep you as comfortable during weather extremes.

Duct Work Inspection

A new HVAC installation requires a thorough duct work inspection. If there are leaks, broken segments, or other signs of duct work failure, the contractor needs to replace it. It should also be sized properly by using Manual D to make sure that it has the right capacity for the new HVAC system.

Leaking duct work reduces the energy efficiency of the new HVAC system and if it’s too small, they will be noisy when the HVAC system runs. If the ducts are too large, there won’t be enough air pressure coming from the air handler to deliver the air to each room.

Exploring the Options

Once you’ve gone through the basics, review what you want from your new HVAC system with the expert. There are a number of system options that enhance comfort and energy efficiency like variable-speed operations and smart system controls.

If you need to install a new HVAC system, contact O.C. McDonald. We provide trusted HVAC services in the San Jose and Bay Areas or call us at (408) 295-2182 today.