OFFICE Open 8am-5pm, Mon - Fri. 

605-342-5422​​

After hrs Message  Phone 605-939-4402

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A/C Reading Pressures
Low side / High Side

Low Side 25-40  / High Side 170-250 Normal Pressure affected by ambient temp

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Low-Low Side /  Low-High Side,, Under Charged

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Low-Low Side  / Low-High Side,,  expansion valve Restricted or closed

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Low-Low Side  / Low High Side,,  Orfice tube Restricted or blocked

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Low-Low Side  / Low-High Side,,  Suction line at pump Restricted or blocked

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Low-Low Side  / Low-High Side,,  Condencer Line to Evaporator, Evaporator  Restricted

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Low-Low Side  / High-High Side,, Evaporator Restricted Air Flow

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High-Low Side / Low-High Side,, Compressor weak, High side needle will shake

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High-Low Side / High High Side,, Over Charged

High-Low Side / High High Side,, Splash  water onto Condenser-if press drops,, Over Charged 

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High-Low Side / High High Side,, Condenser Air Flow Restricted 

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High-Low Side / High High Side,, Engine overheating Temp High

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High-Low Side / High High Side,, expansion stuck Open

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High-Low Side / High High Side,, Air, Moister in freon

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