When a home loses heat in the middle of winter, it quickly becomes more than an inconvenience, it’s an emergency. In this edition of the GEN3 Know Philly Series, we walk through a real Philadelphia HVAC system replacement that began as a no-heat service call in Fairmount and ended with a complete, modern system upgrade designed for comfort, efficiency, and space-conscious city living.
The Service Call That Started a Philadelphia HVAC System Replacement
System Type: Gas Furnace
Original System Age: 1987
The homeowner reached out after noticing the furnace fan was running, but no heat was coming through the home. With a system over 30 years old, our technician knew a detailed inspection would be critical.
After setting the thermostat to call for heat and heading to the basement, the furnace was observed moving through its normal sequence of operation, until it stalled at the igniter.
Testing confirmed:
- The igniter was receiving proper voltage (120V)
- The igniter itself was no longer functioning
This diagnosis explained the lack of heat and highlighted the risks of relying on an aging system well past its expected lifespan.
Emergency Repair Before the System Replacement
To restore heat quickly, GEN3:
- Removed and replaced the failed furnace igniter
- Restarted and tested the system
- Confirmed safe ignition and normal heating operation
Heat was restored the same visit. While on site, our technician also identified venting concerns and provided repair options for the homeowner to consider.
During this conversation, the homeowner asked about freeing up outdoor space, a common challenge in Philadelphia rowhomes. That question opened the door to a long-term solution.
Planning a Philadelphia HVAC System Replacement for a Fairmount Home
The homeowner expressed interest in upgrading to a side-discharge AC condenser, which is ideal for homes with limited rear yard or patio space. After reviewing the age, efficiency, and condition of the existing equipment, GEN3 proposed a full Philadelphia HVAC system replacement using high-efficiency Trane equipment.
Philadelphia HVAC System Replacement: Installation Overview
Indoor System Upgrades
- New Trane gas furnace
- New AC evaporator coil
- Ecobee Wi-Fi smart thermostat
The indoor unit was located in an unfinished basement with ample working space, allowing for clean, efficient installation.
Outdoor System Upgrades
- Side-discharge Trane AC condenser
- Relocated to the rear side alley
- Elevated 6–8 feet off the ground
- Securely mounted to the stone exterior wall using metal support brackets
This setup maximized usable outdoor space while maintaining proper airflow and service access.
Correcting Airflow Issues Replacement
One major issue uncovered during installation was undersized return ductwork. The original system could only support 750 CFM, well below what the new equipment required.
GEN3 corrected this by installing:
- Properly sized return ductwork (1,250 CFM)
- A new return drop
- Air filter box with accessible external 1” filter rack
This upgrade ensures proper airflow, improved comfort, and better system longevity.
Electrical, Venting, and Custom Fabrication Work
As part of the Philadelphia HVAC system replacement, GEN3 also completed:
- New electrical box, switch, and cover
- New whip and safety disconnect at the outdoor unit
- Extended copper refrigerant lines and communication wiring
- On-site fabricated metal duct transition
- Updated metal exhaust and vent piping
Final Startup and Efficiency Testing
Before completion, the system underwent a full startup and performance test, including:
- Leak detection
- Airflow measurement
- Voltage verification
- Refrigerant charge adjustment
- Temperature and pressure checks
The thermostat was calibrated, and system settings were optimized for peak efficiency.
Warranty and Ongoing Support After a Philadelphia HVAC System Replacement
This Fairmount homeowner received:
- 2-year labor warranty (extendable up to 5 years with enrollment in the GEN3 Service Partner & Maintenance Plan)
- 1-year complimentary GEN3 maintenance plan
A final walkthrough was completed to review system operation, maintenance requirements, and answer any questions before project closeout.
The Result: A Smarter Philadelphia HVAC System Replacement
What began as a no-heat emergency ended with a fully modernized Philadelphia HVAC system replacement, delivering better comfort, higher efficiency, and smarter use of space in a classic Fairmount home.
That’s the goal of the GEN3 Know Philly Series:
real homes, real problems, and HVAC solutions built specifically for Philadelphia living.
