Expert Heat Pump
Repair Services

When your heat pump fails, you lose both heating and cooling capabilities, making prompt, professional repair essential for your family's comfort. At Graco Heating & Air, our 30+ years of experience servicing heat pumps throughout North Texas means we've diagnosed and repaired virtually every type of heat pump problem. Our licensed technicians (TX License #TACLA00017212E) understand the unique challenges these dual-purpose systems present and arrive equipped with the knowledge, tools, and parts needed to restore your comfort quickly.

Armstrong Pro Team

TX License #TACLA00017212E

Understanding Heat Pump Problems

Common Heat Pump Problems We Solve

Through decades of service, we've identified the most frequent heat pump issues North Texas homeowners encounter.

Complete System Failures

When your heat pump won't operate at all:

  • Electrical component failures affecting operation
  • Blown fuses or tripped breakers
  • Failed contactors preventing startup
  • Control board malfunctions
  • Thermostat communication issues
  • Power supply interruptions

Heating Mode Problems

Winter operation issues include:

  • System stuck in cooling mode
  • Inadequate heating output
  • Frequent defrost cycles
  • Auxiliary heat running constantly
  • Reversing valve failures
  • Cold air from vents

Cooling Mode Issues

Summer performance problems:

  • Insufficient cooling capacity
  • Ice formation on coils
  • High humidity levels indoors
  • Short cycling behavior
  • Refrigerant-related issues
  • Warm air circulation

Year-Round Operational Problems

Issues affecting both modes:

  • Unusual noises during operation
  • Higher than normal energy bills
  • Frequent on/off cycling
  • Uneven temperature distribution
  • System running constantly
  • Water leaks or drainage issues

Get Your Free Heat Pump Repair Quote

Flexible Financing Available

Your comfort is within reach with flexible financing options from GoodLeap and Service Finance.

Learn More
30+ Years of Experience

30+ YEARS OF EXPERIENCE

Community Focused

COMMUNITY FOCUSED

Proudly Serving Northern Texas

PROUDLY SERVING NORTHERN TEXAS

Military & First Responder Discounts

MILITARY & FIRST RESPONDER DISCOUNTS

24/7 Emergency Service

24/7 SERVICE

Professional Heat Pump Services

Comprehensive Diagnostic Process

Heat pumps require specialized diagnostics due to their dual-mode operation. Our systematic approach ensures accurate problem identification and effective repairs.

Systematic Problem Identification


Initial Assessment Protocol

Our diagnostic approach begins with:

  • Detailed symptom documentation
  • Operational mode verification
  • Thermostat setting review
  • Visual system inspection
  • Safety hazard evaluation
  • Historical problem review

Mode-Specific Testing


Heating Mode Diagnostics

  • Reversing valve operation check
  • Defrost control verification
  • Auxiliary heat sequencing
  • Temperature rise measurement
  • Refrigerant pressure in heating
  • Outdoor coil condition

Cooling Mode Testing

  • Standard AC diagnostics
  • Refrigerant charge verification
  • Superheat/subcooling calculations
  • Evaporator temperature differential
  • Condenser performance
  • Airflow measurements

Specific Component Repairs

Reversing Valve Service

The heart of heat pump operation - this critical component enables heating/cooling switching:

Common Reversing Valve Issues

  • Stuck in one position
  • Incomplete switching
  • Internal leakage
  • Coil failures
  • Pilot valve problems

Repair Procedures

  • Electrical testing of solenoid coil
  • Manual valve operation attempts
  • Temperature differential testing
  • Refrigerant flow verification
  • Replacement when necessary

Defrost Control Repairs

Essential cold weather operation - proper defrost cycles prevent ice buildup:

Defrost System Problems

  • Timer failures causing ice accumulation
  • Sensor malfunctions triggering unnecessary defrost
  • Incomplete defrost cycles
  • Control board defrost issues
  • Temperature sensor failures

Diagnostic and Repair Steps

  • Defrost timer testing and adjustment
  • Sensor resistance verification
  • Control board sequence testing
  • Defrost termination verification
  • Complete cycle observation

Emergency Heat Pump Services

24/7 Emergency Response

Priority situations include:

  • Complete system failures in extreme weather
  • No heat during freezing conditions
  • No cooling during heat waves
  • Electrical burning smells
  • Refrigerant leaks
  • Safety concerns
Emergency: 817-725-9234

Auxiliary Heat Issues

When backup heating fails:

Electric strip heater failures
Sequencer malfunctions
High limit trips
Wiring issues
Control problems

Dual Fuel Complications

Hybrid systems present unique challenges:

  • Fuel switching failures
  • Temperature sensor issues
  • Control integration problems
  • Gas furnace lockouts
  • Communication errors

Advanced Diagnostic Technology

Digital Analysis Tools
  • Refrigerant analyzers for precise readings
  • Thermal imaging for temperature mapping
  • Digital manifolds for accuracy
  • Amp clamps for electrical diagnosis
  • Pressure transducers for system analysis
System Performance Testing
  • Real-time efficiency calculations
  • Capacity verification procedures
  • Airflow measurement tools
  • Temperature differential mapping
  • Energy consumption analysis

Cost Considerations and Value

Understanding Repair Investments

Factors Affecting Repair Costs

Several elements influence pricing:

  • Specific component failures
  • System age and availability
  • Repair complexity
  • Emergency service needs
  • Warranty coverage status

Common Repair Ranges

While each situation is unique:

  • Capacitor replacement: Most economical
  • Defrost control repairs: Moderate investment
  • Reversing valve replacement: Significant repair
  • Compressor replacement: Major investment
  • Complete system evaluation needed

Repair vs. Replacement Analysis

Making Informed Decisions

We help evaluate:

  • Current system age and condition
  • Repair cost vs. replacement value
  • Energy efficiency improvements available
  • Warranty status considerations
  • Long-term reliability prospects

When Replacement Makes Sense

  • Major repairs on systems 12+ years old
  • Multiple component failures
  • Obsolete refrigerant types
  • Significant efficiency gains possible
  • Comfort issues despite repairs

Brand-Specific Expertise

Multi-Manufacturer Knowledge

Armstrong Heat Pump Service

ProTeam dealer advantages:

  • Factory technical support
  • OEM parts access
  • Warranty repair authorization
  • Model-specific training
  • Extended warranty options

Daikin System Repairs

Specialized knowledge includes:

  • Inverter technology service
  • Variable-speed diagnostics
  • Proprietary parts access
  • Software updates
  • Technical documentation

Universal Service Capability

We repair all major brands:

  • Carrier and Bryant
  • Trane and American Standard
  • Lennox and Goodman
  • Rheem and Ruud
  • York and Coleman

Preventive Maintenance Importance

Avoiding Future Repairs

Bi-Annual Service Critical

Heat pumps work year-round, requiring:

  • Spring cooling preparation
  • Fall heating readiness
  • Defrost cycle verification
  • Refrigerant optimization
  • Electrical component testing

Maintenance Prevents

  • 80% of common failures
  • Expensive emergency repairs
  • Premature system replacement
  • Energy waste
  • Comfort disruptions

Seasonal Repair Patterns

Spring Transition Issues

Common problems when switching to cooling:

  • Reversing valve sticking
  • Refrigerant charge inadequate
  • Cooling capacity reduced
  • Defrost controls need adjustment
  • Thermostat programming errors

Fall Heating Preparation

Issues arising with heating mode:

  • Auxiliary heat failures
  • Defrost cycle problems
  • Insufficient heating capacity
  • Reversing valve issues
  • Control system errors
Graco Heating & Air Service Area Map - Lewisville & North Texas

SERVING LEWISVILLE AND BEYOND

SERVICE AREAS AND LOCAL EXPERTISE IN LEWISVILLE & NORTH TEXAS

Our Lewisville headquarters positions us perfectly to serve North Texas communities with quick response times, local climate knowledge, and area-specific solutions. Our established supplier relationships make serving our community even easier, both on the job and off.

DON'T SEE YOUR LOCATION LISTED?

We proudly serve homeowners throughout Denton, Collin, Dallas, Cooke, and Grayson counties. Our local expertise allows us to provide quick, reliable service across the region. If you're in the area, just give us a call to confirm service to your specific location.

We're Here to Help

Frequently Asked Questions

What customers want to know about heat pump repair services

Constant operation can indicate undersized equipment, refrigerant issues, or extreme weather demands. Our diagnostics determine if this is normal operation or a problem requiring repair.

Yes, we repair heat pumps year-round. While extreme cold can complicate some repairs, our experienced technicians have strategies for safe winter service, including temporary heat provisions.

This could indicate defrost cycle operation (normal), reversing valve problems, refrigerant issues, or auxiliary heat failures. Professional diagnosis determines the exact cause and solution.

Most repairs complete within 2-4 hours. Complex issues like reversing valve replacement may take longer. We provide time estimates after diagnosis and keep you informed throughout.

Not necessarily. While heat pumps have additional components like reversing valves and defrost controls, many repairs are similar to standard AC systems. Costs depend on specific issues.

Yes, our technicians are trained to service all major heat pump brands including Carrier, Trane, Lennox, Goodman, Rheem, York, and many others. We maintain relationships with parts suppliers for most systems.

Generally, if your heat pump is over 12-15 years old and repair costs exceed 50% of replacement value, replacement is more economical. We'll assess your specific situation and provide honest recommendations.

Auxiliary heat automatically supplements the heat pump when needed. Emergency heat bypasses the heat pump entirely and should only be used temporarily when the heat pump isn't working.

Heat pumps should be serviced twice yearly - once before cooling season and once before heating season. This bi-annual maintenance prevents 80% of common failures and ensures optimal performance.

Yes, we partner with Service Finance and GoodLeap to offer flexible financing options for major repairs. Quick approval processes and competitive rates make it easier to get your heat pump running without straining your budget.

The Smart Choice

Trust Graco Heating & Air for Heat Pump Repair

When your heat pump needs repair, don't settle for technicians who only understand air conditioners or furnaces. Choose experts who know heat pumps inside and out. With over 30 years serving North Texas, Graco Heating & Air delivers the specialized expertise your dual-purpose system requires.

Visit our contact page today to schedule your heat pump repair service and restore year-round comfort to your home.

30+ Years

Expert Experience

Licensed

TX Certified

24/7

Emergency Service

100%

Satisfaction

More Heat Pump Services

Repair, replacement and bi-annual service for year-round heat pump systems across North Texas.

© Red Barn Media Group 2026