24/7 Commercial Rooftop Unit (RTU) Heating Repair & Maintenance in Plano, TX

Common RTU Heating Problems We Repair

Rooftop units face tough conditions year-round. Here are the heating problems we solve daily:

No Heat, Short Cycling, Lockouts, Uneven Heating

When your building stays cold despite the thermostat calling for heat, we quickly identify whether it's an igniter, gas valve, or control board issue. Units that turn on and off repeatedly waste energy and wear out fast. We fix the root cause, whether it's a faulty flame sensor or pressure switch problem. Some areas too hot, others too cold? We troubleshoot damper actuators, thermostats, and airflow issues to restore balanced comfort.

Ignition/Burner/Gas Valves, Blowers/Motors, Thermostats/Sensors

From dirty igniters to malfunctioning gas valves, we repair all combustion-related components safely and efficiently. Blowers keep air moving through your building. We replace worn belts, repair motors, and ensure proper airflow. We calibrate thermostats and sensors for accurate temperature control.

Economizers, VFDs, BAS Communication (BACnet/Modbus/Niagara)

We repair and optimize economizer systems including enthalpy sensors and CO2 monitoring. Our technicians troubleshoot variable frequency drives (VFDs) and resolve building automation system communication errors across BACnet, Modbus, and Tridium Niagara platforms including JACE controllers.

• Control board and relay failures

• Heat exchanger cracks and safety shutdowns

• High energy bills and efficiency loss

• Flame sensor contamination

• Hot surface igniter failure

• Inducer motor problems

• Pressure switch faults

• Limit/rollout switch issues

• Low ambient operation issues

• Freeze protection problems

• Refrigerant charge issues (R-410A/R-22)

• Demand-controlled ventilation (DCV) malfunctions

RTU Repair vs. Replacement in Plano

50% Rule, Warranty Status, R-22/EPA Considerations

If repair costs exceed 50% of replacement value, replacement is usually better. Check if manufacturer warranty covers repairs before making decisions. Older R-22 systems face EPA refrigerant regulations and rising costs, making replacement more attractive.

IEER, SEER/EER Gains & Utility Bill Impact

New units with higher IEER ratings cut utility bills significantly. While IEER is the primary metric for RTUs, comparable SEER/EER improvements may apply to light commercial package units and split systems. Energy savings often offset replacement costs within 3-5 years.

Crane Lifts, Curb Adapters, Permits & Timelines

We handle crane lifts, curb adapters, and City of Plano mechanical permits. Typical lead times for crane scheduling, curb adapters, and permitting run 2-5 business days for standard swaps; longer during peak season or freeze events. We coordinate required Plano inspections and close permits after startup/commissioning.

Timeline at a glance:

• Site survey and load calculations: 1 day

• Crane/permit scheduling: 2-5 business days

• Swap/commissioning: 1-2 days

Important Considerations:

• RTUs typically last 12-20 years depending on usage and maintenance

• Units over 15 years old with major component failures often cost more to repair than replace

• Repeated breakdowns signal it's time for a new system

• Oncor utility rebates and Section 179 tax deduction offset replacement costs

• We provide side-by-side quotes for major repair vs. replacement to aid decision-making

Get expert advice on repair vs. replacement

Request same-day RTU service

Preventive RTU Maintenance & Service Contracts

Seasonal Tune-Ups, Filters/Belts, Bearings, Coils & Drains

We perform thorough inspections before heating and cooling seasons. Our service contracts provide priority scheduling and discounted repairs. Regular maintenance includes filter changes with proper MERV-rated filters, belt adjustments, bearing lubrication to prevent motor failure, coil cleaning, and drain maintenance.

Combustion/Gas Pressure, Electrical Testing, Safety Controls

Our technicians perform combustion analysis and gas pressure checks to ensure safe, efficient operation. We test electrical components including capacitors, contactors, and wiring. Safety controls testing includes limit/rollout switches and heat exchanger inspections for cracks.

IAQ, CO/CO2 Monitoring, BAS Trend Logs & Setpoint Optimization

We verify DCV sensor calibration and CO2 setpoints for optimal indoor air quality. CO monitoring ensures safety. We review BAS trend logs and perform setpoint optimization and schedule resets to reduce runtime and energy consumption. After each visit, you receive detailed reports with photos, findings, and recommendations for optimal performance.

• Thermostat and economizer calibration

• Roof curb and flashing inspections

• Condensate pan cleaning

• Documentation and recommendations

24/7 Emergency RTU Heating Repair

Plano Response Times & Critical-Facility Prioritization

When heating fails, we respond fast. Our emergency technicians are on-call 24/7 for urgent repairs. Most emergency calls in Plano receive service within 2-4 hours. Medical facilities, schools, and other critical buildings receive priority during freeze events and emergencies.

Safety-First Roof Access (Lockout/Tagout)

We follow strict lockout/tagout procedures and OSHA-compliant safety practices for all roof access work. Our technicians use proper fall protection equipment and follow ANSI Z359 standards.

Temporary Heat Options During Major Repairs

Temporary heat options including portable units or staged electric heat can be provided for critical areas during major repairs or replacements, ensuring minimal disruption to your operations.

Emergency call process:

• Dispatch with ETA confirmation

• Safety assessment and lockout/tagout

• Temporary heat setup if needed

• Final verification and service report

RTU Replacement & Retrofits (Crane Lifts, Controls, Commissioning)

We manage complete RTU replacements from start to finish. Our team coordinates crane lift operations, installs curb adapters when needed, and ensures seamless controls re-integration with your existing building automation system. We handle all aspects of startup and commissioning to verify proper operation.

Load Calculations, Startup/Commissioning & Warranty Registration

We perform load calculations and verification to ensure correct tonnage and airflow before recommending new equipment. After installation, we complete thorough startup procedures, commission the system per manufacturer specifications, and register your warranty for maximum protection.

Costs & Pricing in Plano

Diagnostic/Trip Charges & After-Hours Rates

Standard diagnostic visits range from $95-150. We waive this fee when you approve repairs. Local trip charges may apply for locations outside our primary service area. After-hours emergency rates apply outside normal business hours (typically 1.5x standard rates).

Typical Repair Ranges & Repair vs. Replacement Quotes

• Igniters: $200-400

• Inducer motors: $400-800

• Blower motors: $500-1,200

• Control boards: $400-900

• Heat exchangers: $1,500-3,500

Cost factors include:

• Tonnage and unit size

• Brand and parts availability

• Roof access complexity/crane requirements

• After-hours/emergency service rates

• Diagnostic and trip charges

Financing, Oncor Rebates & Section 179

We offer financing for replacements and help you access financial incentives. Our team handles Oncor rebate pre-qualification and paperwork. Section 179 allows businesses to deduct the full purchase price of qualifying equipment in the year of purchase, potentially saving thousands on taxes. We provide documentation needed for tax filing.

Plano Codes, Permitting & Compliance

Local code compliance

We ensure all work meets City of Plano mechanical and gas code requirements. We handle permitting when required and coordinate required Plano inspections, closing permits after successful startup and commissioning.

Safety and environmental standards

• EPA refrigerant recovery and recordkeeping

• OSHA/ANSI Z359 certified fall protection practices

• IECC energy code compliance

• Texas Fuel Gas Code adherence

Qualifications & Licensing

• Texas HVACR contractor licensed by TDLR

• NATE-certified technicians

• EPA Section 608 certification for refrigerant handling

• Fully insured and bonded

• OSHA-compliant safety practices

• Manufacturer-trained on Trane, Carrier, Lennox, York, Daikin, Goodman, Rheem, Ruud, Bryant, American Standard

• City of Plano contractor registration

• Background-checked, uniformed technicians

Brands, Controls & Technologies We Service

Major RTU brands

Trane, Carrier, Lennox, York, Daikin, Goodman, Rheem, Ruud, Bryant, American Standard, Johnson Controls, Siemens, Honeywell, Daikin Applied/McQuay

Advanced technologies

• DDC/BMS controls and building automation systems

• Variable frequency drives (VFDs)

• Economizers with enthalpy sensors

• BACnet and Modbus communication protocols

• Tridium Niagara and JACE controllers

• Demand-controlled ventilation (DCV) with CO2 sensors

Why Timely RTU Service Matters

• Reduced downtime: Prevent unexpected failures that disrupt business operations

• Energy savings: Well-maintained units operate 10-30% more efficiently

• Longer equipment lifespan: Regular service extends RTU life by 5-7 years

• Compliance: Meet local codes and maintain warranty coverage

• Indoor air quality: Proper maintenance ensures healthy air for occupants

Risks of Skipping Maintenance

• Carbon monoxide hazards: Cracked heat exchangers can leak dangerous CO into buildings

• Efficiency loss: Dirty coils and filters increase energy consumption by up to 40%

• Unplanned downtime: Emergency failures cost 3-5x more than preventive maintenance

• Voided warranties: Manufacturers require proof of regular maintenance for warranty claims

• Premature replacement: Neglected units fail 5-10 years earlier than maintained systems

For Property Managers & Facilities

We understand the unique needs of property managers overseeing multiple sites. Our multi-site maintenance agreements include asset tagging for easy equipment tracking, customized preventive maintenance schedules, and after-hours scheduling to avoid tenant disruption. You receive digital reports with photos documenting all service work, making it easy to track maintenance history and plan budgets. We provide priority emergency response and volume discounts for portfolio-wide service contracts.

Service Area & Dispatch Windows

We serve all of Plano plus surrounding areas including Frisco, Allen, McKinney, Richardson, Carrollton, The Colony, Addison, and Garland. Our coverage extends throughout Collin, Denton, and North Dallas County.

Typical dispatch windows: Plano/Allen: 2-4 hours; Frisco/McKinney: 3-5 hours (weather permitting); Richardson/Carrollton: 2-4 hours; The Colony/Addison: 3-5 hours.

Get Same-Day RTU Service in Plano

Don't let heating problems disrupt your business. Our licensed technicians are ready to diagnose and fix your rooftop unit today. We provide upfront, itemized estimates with no surprises. Plus, we offer free second opinions on major repairs.

Call now for dispatch or request service online

📞 Emergency Hotline: (469)-625-2116

✓ Licensed & insured TDLR contractors

✓ Same-day service available

✓ All brands serviced

✓ Upfront pricing

✓ 24/7 emergency response

Frequently Asked Questions

How much does rooftop unit heating service cost in Plano, TX?

Basic service calls start at $95-150. Repair costs vary widely based on the problem. Simple fixes like replacing igniters cost $200-400, while major repairs like heat exchangers run $1,500-3,500.

What does a typical rooftop heating unit service include?

Standard service includes full system inspection, filter changes, belt adjustments, combustion analysis, electrical testing, thermostat calibration, and safety controls verification.

How quickly can you respond to emergency RTU heating calls?

We typically arrive within 2-4 hours for emergency calls in Plano. Response times vary based on weather conditions and call volume.

Are your technicians certified/licensed for commercial HVAC in Texas?

Yes, we're fully licensed by TDLR. Our technicians hold NATE certification and EPA Section 608 certification.

How do I know if my rooftop unit needs repair or replacement?

Consider replacement if your unit is over 15 years old, needs frequent repairs, or if repair costs exceed 50% of replacement value.

What risks are there if I delay RTU heating maintenance?

Delayed maintenance leads to unexpected failures, higher utility bills, safety hazards including CO risks, and premature equipment replacement.

Do you service all commercial rooftop unit brands?

Yes, we service all major brands including Trane, Carrier, Lennox, York, Daikin, and more.

Can you help with energy efficiency improvements for my RTU?

Absolutely. We optimize existing systems and can recommend high-IEER replacements that qualify for utility rebates.

What local regulations affect rooftop unit heating repairs in Plano?

City of Plano mechanical permits may be required for major repairs and replacements. We handle all permitting and ensure code compliance.

Are service guarantees or warranties provided?

Yes, we provide warranties on parts and labor for eligible repairs. Manufacturer warranties apply to new equipment.

Do you handle crane lifts, permits, and curb adapters for RTU replacements?

Yes, we manage the entire replacement process including crane coordination, curb adapters, and all required permits.

Can you integrate our rooftop units with our building automation system?

Yes, we work with BACnet, Modbus, and Tridium Niagara systems to integrate RTUs with your existing BAS.

Do you offer maintenance plans for property managers?

Yes, we provide multi-site maintenance agreements with asset tagging, priority service, and digital reporting.

Do you provide temporary heat while my RTU is down for major repairs or replacement?

Yes, we can provide temporary heat options including portable units or staged electric heat for critical areas during major repairs or replacements.

How quickly can you schedule a crane lift in Plano, and do you handle permits and inspections?

Typical lead times for crane scheduling run 2-5 business days for standard swaps. We handle all required permits and coordinate City of Plano inspections.

Do you stock common RTU parts so most heating repairs can be completed same day?

Yes, we stock common parts including igniters, capacitors, contactors, and safety switches, allowing us to complete most repairs on the first visit.

External Resources

• U.S. Department of Energy - Commercial HVAC

• EPA - Section 608 Refrigerant Management

• Texas Department of Licensing & Regulation (TDLR) - HVACR