Frequently Asked Questions

• What tonnage options (6, 7.5, 10 tons) are best suited for my commercial space?

  Have a Manual N or ASHRAE load calculation performed. Generally, 6-10 tons cover small to mid‑size zones; internal gains and ventilation drive the final size.

• Should I choose R-32 or R-410A refrigerant for new commercial installs?

  R‑32 provides higher efficiency potential and lower GWP; R‑410A is broadly supported. Select based on code, tooling, technician training, and long‑term service plans.

• What is the difference between cool-only with electric heat versus gas heat package units?

  Electric heat uses resistance strips-simple and ideal for mild climates or backup. Gas heat offers lower operating cost where gas is available; listed at 81% AFUE.

• Are these Daikin commercial systems compatible with downflow/horizontal duct configurations?

  Yes. Many models are convertible for downflow or horizontal supply/return. Verify orientation kits, curb size, and condensate routing before installation.

• Do gas heat package units with 81% AFUE meet my local code requirements?

  Often, yes-but codes vary by jurisdiction and altitude. Confirm local energy code, utility rules, and any required field kits before submittal.

• What are the installation requirements for 3-phase commercial equipment?

  Correct voltage, balanced phases, proper MCA/MOCP, fused disconnects, and qualified electrical/HVAC setup are mandatory. Follow manufacturer clearances and rigging guidelines.

• How do package AC systems compare to split systems for rooftop applications?

  Packages simplify placement and service with one cabinet. Splits offer indoor placement flexibility and staging options but require line sets and more field coordination.

• Are PTAC (hotel style) units appropriate for multi-room properties or only individual suites?

  PTACs are designed per room or suite. For multi‑room conditioning from one unit, consider ducted air handlers or light commercial splits.

• What SEER2 considerations apply to light commercial systems?

  SEER2 ensures current test procedures; check model‑specific ratings for compliance and rebates. Also review EER/IEER for part‑load performance.

• What accessories are available to complete a commercial installation?

  Common options include roof curbs, curb adapters, economizers, hail guards, filter racks, thermostats, and controls-match by model and size.