SYS.00 / Flushing, NY / Residential & light commercial
An air conditioner moves heat. It does not make cold. Refrigerant picks up heat from your indoor air at the evaporator coil and dumps it outdoors at the condenser. When any link in that loop fails, we measure pressures, temperatures and electrical draw to find it.
+1 929-871-3733The outdoor condenser rejects heat. The compressor, typically scroll type in modern residential units, raises refrigerant to high pressure and temperature. A fan pulls outdoor air across the condenser coil, and hot vapor condenses to liquid. Typical R-410A head pressure runs 350–450 psig on a 95°F day; newer units use R-454B.
A sealed loop: compressor, condenser, metering device (TXV or piston), evaporator. Refrigerant should never be “used up”. Low charge means a leak, which must be found and repaired.
Sits above the furnace or in the air handler. Cold refrigerant absorbs heat and moisture from indoor air. Dirty coils or low airflow can freeze it solid.
The air handler houses the blower and coil. A gas furnace adds a heat exchanger and burners. Both push conditioned air through the supply ducts.
Uses a reversing valve to run the refrigerant circuit backward, moving heat indoors in winter. Efficient in Southern California’s mild climate.
No cooling, short cycling, tripped breakers, frozen coils, noisy compressors and failed fans.
Coil cleaning, electrical checks, refrigerant readings, drain flush and airflow measurement.
Load calculation (Manual J), equipment matching, duct review and permitted installation.
Reversing valve faults, defrost issues, igniters, flame sensors and heat exchanger inspection.
| Reading | What it tells us |
|---|---|
| Superheat | Evaporator feed and charge level on piston systems |
| Subcooling | Charge level on TXV systems |
| Delta-T | Heat transfer across the coil |
| Static pressure | Duct restriction. Most homes are designed near 0.5 in. w.c. |
| Amp draw | Compressor and motor health against the nameplate RLA/FLA |
Manifold gauges, clamp meter, multimeter with capacitance, thermometers, manometer, leak detector.
Causes: failed capacitor, dead contactor, low charge, seized compressor, or a tripped breaker.
Causes: dirty filter, weak blower, low refrigerant. Turn the system off and run the fan to thaw.
Causes: oversized equipment, clogged coil, bad thermostat location, or a pressure switch tripping.
The condensate drain carries away moisture the coil removes. Algae clogs the line, and the overflow switch shuts down cooling. Expect gallons per day in humid weather.
A hum without fan or compressor start often points to a failed run capacitor. Replace it promptly, because a struggling compressor can burn out.
Air must return as fast as it is supplied. Undersized returns starve the blower and raise static pressure. Duct leakage in unconditioned attics can waste 20–30% of delivered air, a major factor in California summers.
MERV 8–11 suits most homes. Higher ratings can restrict airflow if the system was not designed for them. Check monthly and replace every 1–3 months.
Sends a 24V call for cooling, heat or fan to the control board.
A relay-style switch that sends 240V to the compressor and fan. Pitted contacts cause failures.
Low-voltage switches that start the blower, igniter or defrost cycle.
PSC or ECM. ECM motors adjust speed to hold airflow steady.
Safety: Capacitors store charge after power is off. Always have a licensed technician handle high-voltage work.
Spring cooling checks and fall heating checks cover coil cleaning, electrical tightening, refrigerant verification, blower and drain inspection, and thermostat calibration. Regular service helps maintain efficiency and manufacturer warranty compliance.
Cedar Furnace Services is a Flushing, NY HVAC company serving homes and small buildings. We begin by checking the system, taking measurements, and looking at the components that affect heating and airflow. The information we gather helps identify where the problem is occurring and what needs attention.
Our work covers common furnace and HVAC issues such as uneven heating, weak airflow, unusual sounds, thermostat problems, ignition issues, filter restrictions, and equipment that is not operating as expected. We explain what the measurements show, outline the repair needed, and focus on correcting the actual issue rather than replacing parts without a clear reason.
From routine furnace concerns to more involved heating system problems, each service starts with a careful inspection of the equipment and its operating condition. We keep the process straightforward, explain the work in clear terms, and address the components that are directly related to the problem.
Equipment brand and age if known, symptoms, when they started, and the thermostat type. Photos of the data plates help us bring the right parts.
39-07 Prince St Flushing, NY 11354
Hours: Mon–Sat, call to confirm
+1 929-871-3733
[email protected]