Loyalty Program
For air conditioners, heat pumps, and furnaces, switches and relays are critical for safe operation and equipment protection. They prevent motor damage, regulate current flow, and ensure efficient performance of compressors, fans, and other essential system components.
-10%Schneider Electric (Barber Colman) AT-603 Single Stat Subbase 2-SwitchesSpecial Price $231.73 Regular Price $257.22
-23%York S1-025-31830-000 SPDT Limit Switch 105°F Open 165°F CloseSpecial Price $39.00 Regular Price $50.71
-10%Sporlan Controls 125131 7X8 Inch X1 1/8 Inch Odf R22 20Ton Thermal Expansion Valve(Txv)Special Price $520.38 Regular Price $577.62Out of stock
-23%Rheem-Ruud 47-104465-01 SPST Limit Switch 115°F-Open 95°F-CloseSpecial Price $16.07 Regular Price $20.88Out of stock- -23%York S1-025-26392-001 SPST Limit Switch 150°F Open 110° CloseSpecial Price $23.21 Regular Price $30.18
- -13%York S1-025-31926-000 SPST Limit Switch Open-240°F Close-155°FSpecial Price $63.67 Regular Price $73.22
- -13%York S1-025-27741-001 SPST Limit Switch 70°F/Open 80°F/CloseSpecial Price $90.33 Regular Price $103.88Out of stock
- -23%York S1-025-26392-003 SPST Rollout Switch 145°F Open 105°F CloseSpecial Price $24.95 Regular Price $32.43
- -13%Trane SWT2945 Stainless Steel Limit Switch Opens 200°F Manual ResetSpecial Price $78.12 Regular Price $89.83
Air Conditioners and Furnaces Switch Replacement Parts
Switch replacements are vital for air conditioners and furnaces. They regulate electrical flow, prevent overheating, and protect key components like compressors and fans, ensuring efficient and reliable HVAC operation. They also control system start and stop cycles, manage fan speeds, and maintain proper pressure and temperature levels for optimal performance.
Failing switches can cause frequent shutdowns, short cycling, or failure to start. Signs include unusual noises, inconsistent fan or compressor operation, and erratic temperature control. Tripped breakers or burning smells may also indicate electrical issues. They can further disrupt normal system operation, affecting compressor and fan performance.
PartsHnC offers a wide range of high-quality HVAC products from trusted brands such as Laars, Goodman, Carrier, Trane, Lennox, and Rheem. We sell trusted spare parts, including differential, low-pressure, rollout, limit, vent, speed fan switches; thermal expansion valves; and 16A door switches.
FAQs
What causes an air conditioner switch to fail prematurely?
Overheating, voltage spikes, moisture, and dust accumulation can cause the switch to fail before its expected lifespan.
Why does my furnace keep short cycling constantly?
A defective limit or rollout switch can cause rapid on-off cycling in the heating system.
How does an AC cut-off switch work?
It interrupts electrical flow when unsafe conditions, like overheating or short circuits, are detected.
How do I stop my furnace from shutting off suddenly?
A faulty rollout or limit switch often causes shutdowns. Ensure the outdoor air conditioner disconnect switch isn’t tripped.
What’s making my air conditioner keep switching on and off repeatedly?
Short cycling usually points to a bad pressure or safety switch disrupting normal operation.
Why is my furnace tripping the breaker every few days?
A defective switch can create short circuits or overloads, forcing your breaker to shut off repeatedly.