Commercial HVAC Contractors in Dallas, TX
What to look for in Commercial HVAC in Dallas
Commercial HVAC is a different trade than residential — rooftop units, package units, VRF systems, larger refrigerant volumes (EPA 608 Universal cert territory), and service-contract economics instead of one-call repair work. Facility managers weight tenure and bonded/insured status more heavily than residential buyers do.
- Commercial HVAC specialization. Provider explicitly lists commercial / rooftop / light-commercial work — not just "we also do commercial" as an afterthought.
- Manufacturer authorization. Authorized commercial-equipment dealer (Carrier Commercial, Trane Commercial, Lennox Commercial). Unlocks the OEM parts pipeline that distinguishes a shop that can next-day a part from one that can't.
- NATE-certified technicians. Industry baseline competence cert. NATE has a commercial track that signals beyond residential basics.
Verify before you book
- EPA 608 Universal certification in the federal registry — we accept self-claimed.
- Active commercial-equipment dealer status in the OEM's commercial directory.
- Service-contract terms or rate cards — commercial work is project-quoted; published prices on this page are residential reference rates only.
Commercial HVAC in Dallas: credentials + service contracts
Commercial HVAC service hinges on EPA 608 universal certification (for refrigerant types not in residential), NATE certification, and the contractor's commercial track record. Here is what each of the 2 contractors below publishes: In Texas, HVAC contractors must hold an active TDLR TACLA license — ask for the number and verify on tdlr.texas.gov before paying.
Top picks
Harlen Johnson HVAC, Plumbing & Electrical
Commercial HVAC score: 3.6
Vouched Score: 83/100
Driven by: Established 65+ Years
- Years: 65+
Consistently strong customer feedback (4.8★ from 1,175+ Google reviews; BBB grade A+).
What customers say about commercial hvac
Harlan Johnson maintains & services our commercial HVAC units. Very impressed with how this company handled a recent service situation. When a follow-up issue came up, the service manager took the time to review it and resolved everything quickly and fairly. That kind of accountability and customer care is rare these days. I truly appreciate a company that stands behind their work.
Google 4.8★ (1,175+)BBB A+
Unlimited Air Conditioning and Heating
Commercial HVAC score: 3.1
Vouched Score: 72/100
Driven by: Established 15+ Years
- Years: 15+
Consistently strong customer feedback (4.8★ from 240+ Google reviews; BBB grade A+).
Google 4.8★ (240+)BBB A+
Typical Commercial HVAC costs in Dallas, TX (2026)
Last updated
Estimated ranges for Dallas, TX. Actual cost varies with system tonnage, building square footage, and service-contract scope — always request a written quote for your facility.
| Service | Typical range |
|---|---|
| Commercial RTU service call (diagnostic + minor repair) | $275–$820 |
| Light-commercial AC install (per ton, installed) | $2,300–$4,550 |
| Preventive maintenance contract (per RTU / year) | $365–$1,100 |
| Commercial RTU replacement (5-ton package, installed) | $10,900–$22,750 |
| Emergency / after-hours service premium | $135–$410 |
What You Need to Know Before Hiring Dallas HVAC Experts
- How does commercial HVAC service differ from residential?
- Rooftop package units (RTUs) instead of split systems, EPA 608 universal certification required for refrigerant handling, service contracts with quarterly preventive maintenance vs. on-demand calls. Light-commercial (under 25 tons) overlaps with residential capacity; true commercial starts at 25+ tons with VAV or VRF complexity.
- How much does HVAC service cost in Dallas, TX?
- Commercial RTU service call typically runs $275–$820, and commercial RTU replacement runs $10,900–$22,750 in Dallas, Texas. See the HVAC pricing table on this page for the full per-service breakdown.