What Does an HVAC Contractor Do?
HVAC contractors install, repair, and maintain heating and cooling systems including central AC units, heat pumps, furnaces, ductwork, thermostats, and air handlers. In DFW, where summer temperatures regularly exceed 100°F, a functioning AC system isn't a luxury—it's essential. Licensed HVAC technicians in Texas must be EPA-certified to handle refrigerants and should carry proper liability insurance.
Common HVAC Jobs
AC Not Cooling
Refrigerant recharge, compressor repair, capacitor replacement, or thermostat issues.
Furnace Repair
Igniter replacement, heat exchanger repair, blower motor issues, or pilot light problems.
Ductwork Issues
Duct leaks, poor airflow, zoning problems, or insulation improvements.
Full System Replacement
New AC unit, air handler, or complete HVAC system installation with proper sizing.
Typical HVAC Contractor Rates in DFW
| Service Type | Typical Cost Range |
|---|---|
| Diagnostic service call | $75 – $150 |
| Capacitor replacement | $150 – $400 |
| Refrigerant recharge | $200 – $600 |
| Blower motor replacement | $400 – $800 |
| Compressor replacement | $1,500 – $3,000 |
| Full AC unit replacement | $3,500 – $8,000 |
| Complete HVAC system | $6,000 – $12,000 |
Hourly Rate: $85 – $175/hr
Most HVAC work is quoted as flat-rate pricing rather than hourly. Typical job costs range from $200 for minor repairs to $12,000 for complete system replacement.
When to DIY vs Call a Pro
Safe to DIY
- ✓Replace air filter
- ✓Clear condensate drain line
- ✓Reset thermostat
- ✓Clean outdoor unit fins
Call a Pro
- ✗Any refrigerant work
- ✗Electrical components
- ✗Furnace repair
- ✗Full system replacement
Frequently Asked Questions
How long does an AC unit last in Texas?
In Texas, AC units typically last 10-15 years due to heavy use during long, hot summers. Systems that run year-round in DFW tend to wear out faster than the national average of 15-20 years. Regular maintenance can help extend the lifespan.
Why is my AC running but not cooling?
Common causes include low refrigerant (leak), a dirty air filter restricting airflow, a frozen evaporator coil, a failed compressor, or a faulty capacitor. If your thermostat is set correctly and the filter is clean, call an HVAC technician for diagnosis.
What is the average cost to replace an AC unit in DFW?
A standard 3-ton AC unit replacement in DFW typically costs $3,500 to $8,000 installed, depending on brand, efficiency rating (SEER), and installation complexity. Higher-efficiency units cost more upfront but save on monthly electric bills. Always get 3 quotes and verify proper sizing.
Red Flags When Hiring an HVAC Contractor
- •
No EPA certification for refrigerant handling
- •
Quoting a new system without doing a load calculation
- •
Pressure to buy the most expensive system
- •
No written warranty on parts and labor
- •
Charging for refrigerant without checking for leaks
- •
No proof of liability insurance
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