We recently performed a central air conditioning service call in Las Vegas for a home with a Comfortmaker heating and cooling system. The system includes a gas furnace and an outdoor condenser unit that runs on R-410A refrigerant. The customer was experiencing poor cooling performance, especially during the hotter parts of the day.
Initial Inspection
Upon arrival, we inspected the indoor Comfortmaker gas furnace located in a tight utility closet. The system showed signs of age and dust accumulation across the return grille and access panels. A dusty furnace can lead to airflow restrictions, which reduce efficiency and cooling performance. Proper airflow is essential for any HVAC system to work correctly because it allows heat transfer to happen smoothly inside the coil.
We also checked the condensate drainage and gas supply. Everything was intact, although some components showed signs of wear and could benefit from future service. Our main focus for this call was the cooling performance, so we moved to the outdoor condenser unit.
Refrigerant Pressure Check
Using our Yellow Jacket digital manifold gauges, we connected to the service ports of the outdoor condenser. The readings showed:
- Initial low-side pressure: 92.7 psi
- Initial high-side pressure: 244.4 psi
- Temperature: around 78.9°F
These numbers indicated the system might be undercharged. According to HVACR School, a properly charged R-410A system should show higher head pressure and balanced suction, depending on ambient temperatures. Low pressure can point to a refrigerant leak or a previously improper charge.
Refrigerant Top-Off and Monitoring
We slowly added refrigerant and monitored the system’s behavior in real time. The new readings after charge correction were:
- Low-side pressure: 181.7 psi
- High-side pressure: 185.9 psi
- Temperature: 60.5°F to 61.9°F
The pressures equalized and the temperature drop indicated improved heat absorption in the evaporator coil. This adjustment brought the system back into a functional pressure range for R-410A in mild ambient conditions. Always remember that refrigerant charge affects not only cooling but also energy efficiency. An undercharged system works harder and uses more electricity without providing adequate comfort.
System Outcome and Comfort Benefits
After the refrigerant correction, we tested the air output inside. The system was now delivering steady, cool air and had resumed proper cycling. The benefits to the homeowner included:
- Improved indoor comfort with consistent temperatures
- Lower energy usage from a balanced and efficient charge
- Longer system life by reducing compressor strain
This project highlights how even small issues—like dust buildup or low refrigerant—can cause big comfort problems. Regular maintenance and performance checks can keep your central air conditioning system running smoothly, especially in the Las Vegas heat.
To learn more about the services we offer in AC repair Las Vegas, AC installation, or HVAC maintenance, visit FastAffordableAir.com.
