Commercial HVAC and RTU replacement, Dallas-Fort Worth
Rooftop unit replacement, planned around your building and your budget.
When a unit is past saving, replacement is a capital decision, not an emergency. We place you with a commercial contractor who right-sizes the equipment and installs it clean.
Commercial HVAC replacement is the planned removal and install of a rooftop unit (RTU) that has reached the end of its service life, usually 15 to 20 years, or that fails the $5,000 repair-versus-replace test. We connect you with a commercial-only Dallas contractor who load-sizes the new unit, handles the crane and curb adapter, and schedules the swap around your tenants, not in spite of them.

What a replacement project includes
- A load calculation so the new unit is right-sized, not just like-for-like
- Curb adapter and crane logistics handled, with permits pulled
- Removal and recovery of the old unit to code, refrigerant reclaimed
- Startup, commissioning, and controls integration
- Documentation and warranty registration for your records
When replacement beats another repair
Replacement is usually the better spend when:
- The unit is past the 15-year ASHRAE median service life
- Age times repair cost is over $5,000 (the $5,000 rule)
- It still runs on phased-out R-22 refrigerant
- Energy bills keep rising from a unit that has lost efficiency
- You are facing a second or third major failure on the same unit
DFW heat is hard on equipment, and an oversized replacement short-cycles, wastes energy, and wears out early. We keep replacement commercial-only and load-calculated, so you buy the unit your building actually needs and a clean install you can document for ownership.
Common questions
How long does a commercial rooftop unit last?
Most commercial rooftop units last 15 to 20 years, and ASHRAE puts the median service life around 15. Maintenance extends it; neglect shortens it. Once a unit passes 15 years and starts failing, replacement usually beats repeated repairs.
How much does a commercial HVAC replacement cost in Dallas?
RTU replacement is a capital project, and the price depends on tonnage, the curb adapter, crane access, and controls. A walkthrough gives you a real number. The point of planning it instead of waiting for failure is to budget it as CapEx rather than pay an emergency premium.
What is the $5,000 rule for HVAC?
The $5,000 rule is a quick repair-versus-replace check. Multiply the equipment's age in years by the estimated repair cost. If the result is over $5,000, replacement is usually the better value; under $5,000, a repair often makes sense. It is a guideline, not a substitute for a professional assessment.
Related commercial HVAC services
Maintenance Plans (PMA)
The plan that prevents most of these calls
Commercial HVAC Repair
Commercial HVAC repair, Dallas-Fort Worth
Commercial AC Repair
Commercial AC repair, Dallas-Fort Worth
Rooftop Units (RTU)
Rooftop unit (RTU) service, Dallas-Fort Worth
Emergency Service
Emergency commercial HVAC, Dallas-Fort Worth
Start with the building and equipment details.
Share the unit count, age range, service history, and current concern. The screening result helps organize the next conversation, but it is not an inspection, diagnosis, or promise of contractor availability.