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Video · Commercial Rooftop Units

RTU HVAC Explained Next to a Backyard Condenser Swap

An RTU, or rooftop unit, packs a whole HVAC system into one cabinet on a roof: compressor, coils, blower, heat and filters. Most houses use a split system instead, like the outdoor condenser in this clip.

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What you’re seeing in this video

Despite the rooftop title, this one stays on the ground. A tech in a backwards cap and black SwiftPro polo wheels a boxed condenser on a dolly past a SwiftPro van.

In a backyard, techs work on an outdoor AC condenser under a pop-up canopy, one kneeling at the unit with his hood up and one in safety glasses working a set of gauges and hoses. Text on screen lists signs a system is struggling.

Job footageSwiftPro
Topic
Commercial Rooftop Units
Length
0:28
Posted
September 21, 2026
Shot by
The SwiftPro crew, Northern Virginia

Why it matters in your house

  • In an RTU, everything lives in one box and air drops straight into the building's ducts through the roof curb. In a split system, the condenser sits outside while the furnace or air handler and coil sit indoors.
  • RTUs usually heat with a gas section or a heat pump, bring in fresh outside air, and often have an economizer that cools with outdoor air on mild days.
  • The warning signs are the same for both: longer run times, rooms that won't hold temperature, odd noises and rising bills. A tech reads pressures and amps either way.

What is an RTU in HVAC?

RTU stands for rooftop unit, a packaged system that heats, cools, filters and moves air from a single cabinet on the roof. It sits on a curb over an opening into the ductwork, so it takes no floor space inside. Stores, offices, schools and churches use them because one crane lift puts the whole system in place.

Want it done at your place? See Commercial Rooftop Units at SwiftPro or call (703) 997-9757.

More videos from the SwiftPro crew

Drone and ground footage of a crane lifting an old Trane rooftop unit off a commercial building and setting a new one on the curb. 0:29A Trane Rooftop Unit Set on Its Curb by CraneAttic before/after: old foil-wrapped plenum and flex duct (R-4.2) with a can of Spray-N-Seal, then new sheet metal with a SwiftPro decal and SwiftPro equipment checkup label.0:13Attic Air Handler Replacement, Seen From the Duct SideBasement furnace replacement: two techs pull the old furnace out, captions explain poor airflow and aging furnace, then a new Rheem furnace (Rheem logo legible) installed on a tile floor; phone 571-470:34Dirty Furnace Filter or Tired Furnace? Why Heating Bills ClimbAir duct cleaning: a tech with a headlamp and respirator works at a return in a living room beside a bookshelf, a floor register caked with dust, and a red vacuum hose fed into the duct opening.0:29Why Is My House So Dusty? Start at the Floor RegisterWater heater flushing explainer: a tech kneels at a GE electric water heater beside a SwiftPro van, then a tech kneels at a basement gas water heater pointing at the drain while the homeowner watches.0:30How Often to Flush a Water Heater: The Drain Valve ExplainedA SwiftPro van parked at a house with a brick pillar; a tech in a SwiftPro hoodie and cap wheels a boxed Navien NPE-A2 tankless water heater off the van on a hand truck; a young tech unboxes parts in 0:33A Navien Tankless Water Heater, Delivered and Unboxed

See all 234 SwiftPro videos

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SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276

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