Air conditioner expansion valves come in types like thermal, electronic, fixed-orifice, and capillary tube designs, each tailored for precise refrigerant control and system efficiency.
-13%Trane VAL4827 Expansion Valve 3 Ton 500 PSI R-22Special Price $124.67 Regular Price $143.37Out of stock
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Air Conditioner Expansion Valve Replacements
Air conditioner expansion valves are critical HVAC components that regulate the flow into the evaporator coil, enabling smooth cooling cycles and consistent system operation. By maintaining the correct balance of pressure and temperature, these valves protect the compressor.
Air conditioner expansion valve replacements are available in multiple types to suit specific applications. Thermal expansion valves (TXVs) are widely used for precise control, while thermostatic expansion valves ensure accurate response to system fluctuations. Flow rater expansion valves provide adaptability across a range of tonnages, and bi-flo expansion valves are designed for heat pumps, allowing flow in both directions for cooling and heating.
PartsHnC offers a wide range of air conditioner expansion valve replacements, including thermal expansion valve (TXV) 3/8" x 1/2" angle R404A/R507, thermal expansion valve kit, thermostatic expansion valve TGES, 4-ton 30" cap thermal expansion valve 3/8" x 5/8", 3/8 inch x 1/2 inch x 1/4 inch thermal expansion valve (TXV). You can also find flow rater thermal expansion valve (TXV), ton expansion valve with bleed port, bi-flo thermal expansion valve R-22, and more. We supply top-quality parts from leading brands such as Reznor, Sporlan Controls, Marvair, International Comfort Products, Nordyne, and more.
FAQs
Are expansion valves universal or equipment-specific?
No, expansion valves are not universal. They are designed for specific tonnage, refrigerant types, and equipment models. Always check compatibility before purchasing.
What’s the difference between a thermostatic and electronic expansion valve?
A thermostatic valve responds mechanically to temperature and pressure changes, while an electronic valve uses sensors and controllers for precise adjustment.
What happens if an expansion valve fails?
A faulty valve can cause poor cooling, system inefficiency, compressor strain, or even a complete system shutdown if not addressed promptly.
How long does an HVAC expansion valve last?
Usually 8–10 years, but poor maintenance or dirty systems can shorten its life.
Can a faulty expansion valve damage the compressor?
Absolutely. If it doesn’t regulate flow correctly, the compressor can overheat or fail.
What are the signs of a clogged expansion valve?
Weak cooling, fluctuating temperatures, or frost on the coil usually mean the valve is clogged.