Second-Story Additions: Independent Or Upgraded HVAC System Recommended

Creating a second-story addition requires careful floor planning and selection of materials. The HVAC system you use in the space will determine not only energy costs, but your comfort too. It pays to consider suitable options and their costs.

  • Installing a separate HVAC system – This option involves extending the ductwork to accommodate heating and cooling in the new space, as well as choosing a system to adequately meet the heating and cooling load. Your contractor should first calculate the load using the Manual J method to appropriately match the output of the new HVAC system to the load requirements. Cost projections should include the price of the system, as well as the labor and materials for extending ductwork.
  • Installing new equipment for the entire home – Several scenarios may lead homeowners to upgrade the existing HVAC system to heat and cool the first floor and the second-story addition. In this case, the contractor should size the heating and cooling load of the entire home, and then select a system that can accommodate that larger load. This is a good option if you need to upgrade your existing equipment anyway, or you’d like to change out a combination furnace/air conditioner to a heat pump. Factor in the price of the equipment and the ductwork extension to calculate the final cost of the project.
  • Using ductless mini-splits for the new space – It’s possible to bypass the added costs of extending ductwork by installing a ductless mini-split heat pump, which doesn’t require ductwork to operate. Instead, this nifty little system consists of up to four indoor air handlers installed in the rooms throughout the second-story addition and connected to a conduit that leads to the outdoor condensing unit. This choice offers multiple benefits like lower installation costs (without ductwork), high heating efficiency and zoned cooling and heating control.

Find out suitable HVAC system options for your second-story addition by contacting Beyer Boys today. We’ve been serving San Antonio and South Texas since 1990 with quality air conditioning and heating solutions, as well as plumbing services for our residential customers.

Our goal is to help educate our customers in the greater San Antonio, Texas area about energy and home comfort issues (specific to HVAC systems). For more information, visit our website.

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