Daikin Comfort Pro HVAC Installation in Plano, TX 75023: Replacing an Aging Frigidaire System with a High-Efficiency Daikin Upgrade

Homeowners in Plano, TX 75023 continue to face the challenges of aging HVAC systems—especially equipment installed 10–15 years ago that struggles to keep up with Texas summers. This case study highlights how Greentech Engineering Heating & Air Conditioning, a certified Daikin Comfort Pro Contractor, delivers engineering-level diagnostics, transparent solutions, and high-standard system installations tailored for North Texas homes.

This project documents the full replacement of an aging Frigidaire HVAC system with a high-efficiency Daikin matched system that meets current SEER2/DOE 2023 standards.
Greentech Engineering HVAC is headquartered in Carrollton, TX and services the entire North Dallas region, including Plano, Allen, Frisco, Richardson, and Carrollton.

1. Project Background: Plano, TX 75023 Home with a Failing Frigidaire System

The homeowner reached out after noticing:

• Weak cooling performance
• Increasing noise from the outdoor unit
• High summer electric bills
• Temperature imbalance between floors
• Multiple recent repairs

The original Frigidaire system was outdated and failing to maintain comfort. After a comprehensive engineering-based diagnostic—airflow testing, refrigerant circuit evaluation, and static pressure measurement—Greentech recommended a full system upgrade.

The homeowner selected our team because of:

• Transparent, honest pricing
• Engineering-driven diagnosis
• Strong communication
• Trust in the Daikin Comfort Pro certification standard

About Daikin Comfort Pro

2. New High-Efficiency Daikin System Installed

The homeowner chose a Daikin matched system designed for high efficiency, quieter operation, and long-term reliability.

System Components

Air Conditioner (Up to 14.5 SEER2)

• 60,000 BTU cooling capacity
• Copeland® scroll compressor with CoreSense™ diagnostics
• High-density sound blanket
• Reliable performance in high outdoor temperatures

All-Aluminum Evaporator Coil (48,000–60,000 BTU)

• Factory-installed TXV for precise refrigerant control
• Rust-resistant drain pan with low water retention
• Enhanced aluminum fin design for improved efficiency

Gas Furnace (100,000 BTU, 80% AFUE)

• Multi-position flexibility
• Energy-efficient 9-speed ECM blower motor
• Stainless-steel tubular heat exchanger
• Multiple continuous fan modes
• Complies with CA Low-NOx standards

Premium Warranty Coverage

• 12-Year Limited Parts Warranty
• 6-Year Unit Replacement Warranty (with homeowner registration)

This configuration provides stable cooling and heating performance ideal for North Texas weather.

3. Why the Homeowner Chose to Upgrade

A repair-versus-replace evaluation showed the old Frigidaire system was no longer cost-effective. The key advantages of upgrading included:

More Reliable Cooling During Plano Summers

Daikin’s higher-efficiency design prevents overheating and performance drops on 100°F+ days.

Improved Airflow & Lower Noise

The new ECM blower motor and proper duct sealing simultaneously improved comfort and reduced noise.

Lower Monthly Utility Costs

The homeowner now benefits from SEER2-compliant efficiency.

Long-Term Warranty Protection

As a Comfort Pro installation, the homeowner receives extended warranty coverage not available from non-certified installers.

4. Professional Installation Scope (ACCA Standard + Comfort Pro Workmanship)

Daikin Comfort Pro installers are required to follow advanced installation guidelines. Greentech’s team completed the following steps:

Removal & Preparation

✔ Safe removal and EPA-compliant refrigerant recovery of the old Frigidaire system
✔ New drain pan, Safe-T switch, drain trap, and insulated drain line installed

Condensate & Drain Line Optimization

✔ Pressurized nitrogen flush to remove clogs and debris
✔ New venting to maintain proper trap operation

Furnace & Coil Installation

✔ Mounted and leveled on reinforced supports
✔ All connections sealed with UL-approved mastic and metal tape
✔ Blower speed set according to ACCA Manual S airflow requirements
✔ Coil balanced to optimize refrigerant flow

Refrigerant Circuit Upgrade

✔ Copper line set flushed with RX-11 + nitrogen
✔ Silver-brazed with 15% rods
✔ Nitrogen pressure test at 250 psi for 15 minutes
✔ Deep vacuum pulled below 500 microns

These steps ensure reliability, moisture removal, and maximum compressor protection.

System Commissioning

✔ Verified superheat & subcooling
✔ Static pressure optimization
✔ Gas furnace calibration
✔ Safety control checks
✔ Full performance test and homeowner orientation

5. Regional Context: Why These Upgrades Matter in North Dallas

Homes across Plano, Allen, Frisco, Carrollton, and Richardson face similar HVAC performance issues due to:

• Aging attic systems
• Poor duct design from early 2000s construction
• High attic temperatures (130°F–150°F)
• Oversized or undersized equipment
• Static pressure issues

Greentech’s engineering-first approach ensures every installation is optimized for airflow, efficiency, and long-term reliability.

About our service in Plano

6. Q&A Section (AEO-Optimized for Google & AI Search)

Q1: When should homeowners in Plano replace their HVAC system?

Common signs include: declining airflow, refrigerant leaks, rising energy bills, increased noise, or systems older than 12–15 years.

Q2: Why choose a Daikin Comfort Pro contractor?

Daikin Comfort Pros receive advanced training, meet strict performance benchmarks, and provide extended warranty coverage unavailable through standard installers.

Q3: What SEER2 efficiency is ideal for North Dallas homes?

Most homeowners benefit from 14.5–18 SEER2 depending on home size, duct condition, and comfort expectations.

Q4: How long does an HVAC replacement take?

Most installations take 6–10 hours, depending on attic accessibility and ductwork requirements.

Q5: Will a new system lower energy bills?

Yes. Replacing a 10–12 SEER system with a modern SEER2 system often reduces energy usage by 20–40%.

Author

Siwei (Lucas) Chen

CTO, Greentech Engineering Heating & Air Conditioning
B.S. Mechanical Engineering, Virginia Tech
ACCA Certified (Manual J/S/D)
NCI-Certified in Air Balancing & Duct Optimization
Daikin Comfort Pro Contractor
10+ Years HVAC Engineering Experience Across DFW

This case study was reviewed and approved by Lucas Chen prior to publication.

Learn more about Air Conditioning Contractors of America - ACCA

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