![]() An HVAC technician can inspect the unit for damaged wires and fuses. Electrical Problems: Acids and oxidation can build up over time, eat away at the circuitry, and cause a power failure.The condensing unit should be kept clear of leaves and weeds and regularly cleaned by the homeowner or a service. The compressor may eventually overheat and shut down. Dirt on the coils prevents the coils from releasing the home’s heat, causing the air conditioner to run more often. System Contamination: The condenser coils are located in the outdoor unit so that they can become covered in dirt, bird droppings, and other grime.A technician can check the lubricant levels and oil pump. Leakage from the evaporator, condenser, pipe connections or the compressor shaft seal causes insufficient lubrication. The additional stress on the compressor may cause it to break down. Without lubricant, the parts wear out, come apart, and fail. The compressor uses oil to lubricate its moving parts. Lack of Lubrication: The air conditioning system must stay lubricated for optimal performance.With proper maintenance, your air conditioner compressor should last over a decade with little issue, but here are some problems that can occur without regular care. They are the quietest compressors because of their ability to run at a very low speed. Variable-speed compressors are great at cooling a house evenly, removing humidity, and filtering the air. ![]() They are only installed with a furnace or air handler possessing a variable-speed fan that can match the compressor speed. Of the three compressor types, variable-speed compressors have the longest run time and slowest pace. They typically can run at 40% to 100% capacity and vary the speed in increments of less than 1%. They are costly to buy and repair and are more likely to break down than other compressors. Variable-speed Compressor: Variable-speed, also known as modulating, compressors are the most expensive but the most efficient.Two-stage compressors are quieter when running at low speed. Running at a lower rate for a more extended time cools the house more evenly, removes humidity better, produces better air quality, and consumes less energy. They are efficient because they usually run at low speed, typically about 70% capacity, for a longer time. They cost more than single-stage compressors to buy and repair and are less likely to break than variable-speed compressors. Two-stage: Two-stage compressors are “middle of the road” in terms of cost and efficiency.Single-stage compressors are noisier than the other types because they always run at full speed. Working at full speed means they shut on and off frequently, leading to cold and hot spots in the home, less humidity removed from the air, poor air quality, and more energy consumed. Single-stage compressors have one speed and always operate at 100% capacity. Single-stage: Single-stage compressors are the cheapest to buy and repair and least likely to break.More intricate, better-performing compressors have higher initial and repair costs but are more efficient and cost less to run. Simpler single-stage compressors have lower initial and repair costs but are less efficient. Daikin offers 6-year warranties on its mid-range models and 12-year warranties on its best models.Ĭompressors can be single-stage, two-stage, or variable-speed. International Comfort Products brands such as Heil, Day & Night, and Tempstar offer 1-year, 3-year, 5-year, and 10-year unit replacement warranties and 10-year general parts warranties. Goodman, Rheem, and Ruud offer replacement of the unit if the compressor fails in the first 10 years. Unit replacement warranty: A few warranties offer replacement of the condensing unit if the compressor fails.Lifetime warranty: Some Goodman and Amana (a sister-brand of Goodman) models offer lifetime compressor warranties.12 years: The best models by American Standard, Trane, and Maytag offer 12-year compressor warranties.10 years: 10-year compressor warranties are the most common and are offered by leading brands such as Trane, American Standard, Carrier, Bryant, Lennox, Rheem, Ruud, Armstrong Air, and Heil.Cheaper air conditioners and base models from the Lennox Merit Series may offer this warranty. 5 years: 5-year compressor warranties are less common as manufacturers become more competitive with extended warranties. ![]() The labor costs to replace parts are not typically included in warranties if the unit is more than two years old, so you will likely have to pay for removing and installing the new compressor or unit. Some warranties will be voided if the condensing unit is not routinely maintained. It’s important to know what your warranty covers and its stipulations. Some warranties guarantee a replacement of the entire condensing unit if the compressor fails. Compressor warranties differ among brands and range from 5 years to a lifetime.
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