The cost of labor to install two condensers and two air handlers can vary depending on several factors, including the region, the complexity of the installation, and the specific HVAC contractor you hire. Generally, HVAC installation costs can range from $50 to $150 per hour for each technician working on the job.
For a standard installation of two condensers and two air handlers in the attic, you can expect the labor costs to be somewhere in the range of $1,500 to $4,000 or more. The complexity of the installation, accessibility of the attic, and any additional work required (such as ductwork modifications) can influence the final labor cost.
Keep in mind that this estimate is for labor only and does not include the cost of the HVAC units themselves, any additional materials, permits, or other fees that may be associated with the installation. It's essential to obtain quotes from several reputable HVAC contractors in your area to get a more accurate estimate based on your specific installation requirements. Additionally, consider checking reviews and asking for references to ensure you hire a qualified and experienced HVAC professional for the job.