Maintenance procedure · Written to ASD-STE100 Issue 9 · Formatted to ANSI Z535

Refrigerator and Freezer Temperature Setting

Domestic refrigerators and freezers — measuring what the compartments actually run at, adjusting the control, and the gap between the FDA food-safety limit and what the manufacturers let you select
ApplicabilityDomestic refrigerators, fridge-freezers and freezers with a user-adjustable temperature control
Task time48 hr 18 min to 48 hr 30 min editorial estimate, not a measurement
PersonnelOne
Revisionv1 · 2026-07-29
BEFORE YOU BEGIN

Before you begin. This procedure is general reference information, not professional advice. Equipment varies by manufacturer, model, and year. Always follow the documentation supplied with your equipment — where it differs from this page, follow the manufacturer. Verify that you have the tools, the working conditions, and the ability to do this task safely. If anything is unclear, if the equipment is damaged, or if the task exceeds your experience, stop and use a qualified professional. You are responsible for your own safety and for the outcome. This site accepts no liability for any loss, damage, or injury arising from the use of this information.

Specifications marked unverified could not be traced to a manufacturer source. Do not rely on them — obtain the value from your equipment documentation.

Summary

Almost nobody knows what their fridge is actually running at, because the thing on the front is a control and not a gauge. The FDA is blunt about it: few refrigerator controls show actual temperatures. Some are a dial numbered 1 to 5, some show a number that is a target rather than a reading, and LG says outright that the figure on its panel is the target temperature and not the current internal temperature. The only way to know is to put a cheap appliance thermometer inside and come back the next day. That is what this page is: two thermometers, a 24-hour wait, one increment of adjustment, and another 24-hour wait.

The number itself is where this gets interesting, and it is the reason the page exists. The FDA publishes a food-safety limit. Whirlpool, GE, LG and Samsung each publish their own recommended setting and their own permitted range, and those ranges do not all sit inside the FDA limit — LG's control goes up to 45 °F and GE's goes up to 44 °F, both of which are warmer than the FDA says food may be kept, and Samsung recommends a freezer setting colder than the FDA figure. We are not going to average five sources and print one confident number. Every figure below is printed with the name of the organisation that published it, so you can see the disagreement and take it to your own manual, which is the only document that describes your machine.

Necessary equipment

ItemNote
Two appliance thermometersThe FDA says that an appliance thermometer is the best way to know the temperature.
Pen and paperRecord each reading with its date.

Find the correct target for your refrigerator

Estimated 7 min to 15 min

NOTEThe FDA target and the manufacturer setting are not the same numbers. Read both.
Refrigerator compartment temperature limit
Unverified — do not rely on this value
CONSULT THE FDA FOOD-SAFETY TARGET AND THE MANUFACTURER DOCUMENTATION FOR YOUR MODEL. THE CONFLICT NOTE BELOW NAMES EVERY FIGURE AND WHO PUBLISHED IT

No tier-1 source was found for this value. Take it from the documentation supplied with your equipment.

Five tier-1 sources publish five different figures for the same compartment, and two of the manufacturer ranges extend past the government limit. THE FOOD-SAFETY LIMIT: the FDA (fda-refrigerator-thermometers and fda-are-you-storing-food-safely, both accessed 2026-07-29) says to keep the refrigerator at 40 °F or below, states it in metric as 'at or below 40° F (4° C)', and says that few refrigerator controls show actual temperatures, so an appliance thermometer is the only way to know. THE MANUFACTURER RECOMMENDATIONS: Whirlpool (whirlpool-refrigerator-set-the-controls, accessed 2026-07-29) says to aim for 37 °F within a safe range of 32 °F to 40 °F; its consumer article (whirlpool-best-refrigerator-temperature, accessed 2026-07-29) gives the ideal as 37 °F (3 °C) and the generally accepted range as 33-40 °F, which is a different cold end from its own support page. GE Appliances (ge-refrigerator-initial-temperature, accessed 2026-07-29) gives 37 °F as the initial setting. Samsung (samsung-refrigerator-temperature, accessed 2026-07-29) gives 38 °F as the ideal setting. THE CONTROL RANGES, WHICH ARE THE PART THAT CONFLICTS: LG (lg-refrigerator-adjust-temperature, accessed 2026-07-29) states that its refrigerator may be set between 34 °F and 45 °F, and GE Appliances (ge-refrigerator-measuring-internal-temperatures, accessed 2026-07-29) states that a reading between 32 and 40 °F is expected while its controls are adjustable to 44 °F. A setting of 44 °F or 45 °F is inside what the manufacturer permits and outside what the FDA says is safe for food. This page does not average these figures, does not rank them and does not choose between them. The FDA figure is a food-safety limit that applies to the food; the manufacturer figures describe one maker's machine. Read your own documentation, measure with an appliance thermometer, and take any disagreement to the manufacturer.
  1. Read the temperature instructions in the documentation for your model.
    • The FDA target and the manufacturer setting are not the same numbers.
    • The specifications on this page give the disagreement in full.
    3m
WARNING

DO NOT USE THE NUMBER ON THE CONTROL AS A MEASUREMENT.
The FDA says that only a few controls show the actual temperature. Bacteria grow in food that is too warm and can make you ill.

  1. Record the FDA food-safety target.
    • The FDA says to keep the refrigerator at 40 °F (4 °C) or below.
    • The FDA says that the freezer temperature is 0 °F (-18 °C).
    1m
  2. Record the setting that your own manufacturer gives.
    • Whirlpool and GE Appliances each give 37 °F for the refrigerator compartment.
    • Samsung gives 38 °F for the refrigerator compartment and -2 °F for the freezer.
    • Whirlpool and GE Appliances each give 0 °F for the freezer.
    2m
WARNING

DO NOT SET THE REFRIGERATOR ABOVE THE FDA TARGET.
LG lets you select 45 °F and GE Appliances lets you select 44 °F. The FDA gives 40 °F (4 °C) or below for food safety.

  1. Speak to the manufacturer if your setting is above the FDA target.
    • The FDA target is a food-safety limit for all refrigerators.
    • The manufacturer setting is for your model only.
    • This page does not select one number for you.
    1m

Measure the two compartments

Estimated 24 hr 5 min

Freezer compartment temperature limit
Unverified — do not rely on this value
CONSULT THE FDA FOOD-SAFETY TARGET AND THE MANUFACTURER DOCUMENTATION FOR YOUR MODEL. THE CONFLICT NOTE BELOW NAMES EVERY FIGURE AND WHO PUBLISHED IT

No tier-1 source was found for this value. Take it from the documentation supplied with your equipment.

The freezer disagreement runs in both directions from the government figure, which is why no single number is printed here. THE FOOD-SAFETY FIGURE: the FDA (fda-refrigerator-thermometers and fda-are-you-storing-food-safely, both accessed 2026-07-29) says the freezer should be at 0 °F, and in metric 0 °F (-18 °C), and elsewhere on the same guidance 'the freezer temperature is 0 °F or below'. COLDER THAN THE FDA FIGURE: Samsung (samsung-refrigerator-temperature, accessed 2026-07-29) gives -2 °F as the ideal freezer setting, and states on the same page that the USDA figure is below 0 °F. AT THE FDA FIGURE: Whirlpool (whirlpool-refrigerator-set-the-controls, accessed 2026-07-29) and GE Appliances (ge-refrigerator-initial-temperature, accessed 2026-07-29) each give 0 °F. WARMER THAN THE FDA FIGURE: GE Appliances (ge-refrigerator-measuring-internal-temperatures, accessed 2026-07-29) publishes an expected morning reading of -5 °F to +8 °F in the freezer of a self-defrosting model, and 5 °F to 7 °F in a manual-defrost model; the warm half of that first range is above the FDA figure. LG (lg-refrigerator-adjust-temperature, accessed 2026-07-29) states that its freezer may be set between 5 °F and -9 °F, so its warmest permitted setting is also above the FDA figure. This page publishes all of it and reconciles none of it. A freezer that reads +8 °F is inside what GE describes as normal for its own self-defrosting models and outside the FDA figure for frozen food, and only your manufacturer can tell you which statement governs your machine.
NOTICE

DO NOT PUT A THERMOMETER AGAINST A WALL, A DOOR OR A VENT.
A reading at a vent is not the temperature of the compartment.

  1. Put an appliance thermometer in the center of the refrigerator compartment.
    • Whirlpool tells you to keep the thermometer away from the walls, the door and the vents.
    • GE Appliances tells you to put the thermometer into a container of food or liquid.
    2m
  2. Put a second appliance thermometer in the freezer compartment.
    • The FDA says to buy one thermometer for the refrigerator and one for the freezer.
    • GE Appliances says that the thermometer must read below zero.
    1m
  3. Close the two doors.
    <1m
  4. Wait 24 hours.
    • GE Appliances says that the temperature needs 24 hours to become stable.
    • Do not open the doors more than usual during this time.
    24h
WARNING

IF THE REFRIGERATOR IS ABOVE 40 °F AND YOU DO NOT KNOW FOR HOW LONG, DISCARD THE FOOD.
The FDA says that food above 40 °F for more than 2 hours is not safe.

  1. Read the two thermometers in the morning.
    • GE Appliances gives a range of 32 °F to 40 °F for the refrigerator compartment.
    • GE Appliances gives a range of -5 °F to +8 °F for the freezer of a self-defrosting model.
    • The warm end of that freezer range is above the FDA target.
    1m
  2. Record the two readings with the date.
    1m

Adjust the control

Estimated 2 min

Interval between two temperature adjustments
Unverified — do not rely on this value
CONSULT THE MANUFACTURER DOCUMENTATION FOR THE INTERVAL

No tier-1 source was found for this value. Take it from the documentation supplied with your equipment.

NOTICE

CHANGE THE SETTING ONE INCREMENT ONLY.
Whirlpool and LG each tell you to wait 24 hours after a change. A large change makes the compartment too cold.

  1. If a reading is above your target, set the control one increment colder.
    • LG and Whirlpool each tell you to change the setting one increment at a time.
    • LG says that the number on the panel is the target and not the current temperature.
    1m
  2. If food freezes in the refrigerator compartment, set the control one increment warmer.
    • Whirlpool says that a temperature below 33 °F can freeze the food.
    • Whirlpool gives 32 °F as the cold end of its own safe range.
    1m
  3. Record the new setting with the date.
    <1m

Do a second measurement

Estimated 24 hr 3 min to 24 hr 7 min

  1. Wait 24 hours again.
    • Whirlpool says to wait a full 24 hours between two adjustments.
    24h
  2. Read the two thermometers again.
    1m
  3. Do the adjustment and the wait again until each reading is at your target.
    • One increment at a time is slow. It is also the only method the manufacturers give.
    1m
  4. Speak to the manufacturer if the refrigerator does not hold your target.
    • A refrigerator that stays warm at its coldest setting has a fault.
    1m

After the job

Estimated 1 min

  1. Leave the two thermometers in the two compartments.
    • The FDA tells you to look at the thermometers often.
    <1m
  2. Read the two thermometers each week.
    <1m
  3. Record the date.
    <1m

Terminology

This page uses one term for each item and holds it throughout, as ASD-STE100 requires. Equipment sellers and other guides use the names below for the same parts.

refrigerator compartment
Also called: fresh food compartment, fridge section, the fridge part, chiller, cold section
appliance thermometer
Also called: fridge thermometer, freezer thermometer, refrigerator thermometer, fridge temperature gauge, standalone thermometer
temperature control
Also called: fridge dial, thermostat, temperature dial, the numbers on the fridge, cold control, setting
refrigerator
Also called: fridge, icebox, fridge freezer, fridge-freezer, the fridge

When to use a professional

Stop if the refrigerator does not reach your target at its coldest setting. A refrigerator that stays warm at the coldest setting has a fault. This procedure does not repair a fault. Speak to the manufacturer or to an appliance technician.

Stop if the two compartments disagree. A cold freezer with a warm refrigerator is a symptom of an air path fault or a defrost fault. This procedure does not diagnose it.

Stop if your own documentation gives a setting above the FDA target. Do not use this page to decide between the two numbers. Speak to the manufacturer of your refrigerator.

Speak to your local health authority about food safety after a long power cut. This procedure is about the setting of a refrigerator that works.

Common questions

What temperature should a fridge be set to?

There is no single answer that every source agrees on, and pretending otherwise would be the dishonest version of this page. The FDA publishes a food-safety limit: keep the refrigerator at 40 °F (4 °C) or below. Whirlpool and GE both recommend 37 °F, Samsung recommends 38 °F, and Whirlpool's own two pages give slightly different safe ranges — 32-40 °F on its support site and 33-40 °F in its consumer article. Every one of those recommendations sits inside the FDA limit, so if your machine is a Whirlpool, a GE or a Samsung, following your own manual will also satisfy the FDA. The part that does not line up is the control range, which is the next question.

My fridge only goes up to 45°F on the dial. Is that safe?

Not for food, according to the FDA, and this is the disagreement at the heart of the page. LG states that its refrigerators can be set between 34 °F and 45 °F, and GE's controls are adjustable up to 44 °F. Both of those top settings are inside what the manufacturer permits and above the 40 °F the FDA says food must be kept at or below. We are not going to tell you the manufacturer is wrong or that the FDA is being over-cautious; we are telling you the two documents say different things about the same dial. If your setting is above 40 °F, measure the actual temperature first, then ask your manufacturer why the range goes where it does.

Why can't I just trust the number on the front of the fridge?

Because on most machines it is not a measurement. The FDA states plainly that few refrigerator controls show actual temperatures, and LG says the same thing about its own panels: the number displayed is the target temperature, not the current internal temperature, and the actual temperature varies with how full the unit is and the room around it. Some controls are just a dial numbered 1 to 5 with no units at all. An appliance thermometer costs a few dollars and turns a guess into a reading.

What should the freezer be set to?

The FDA says 0 °F (-18 °C). Whirlpool and GE both give 0 °F as the setting, so those two line up exactly. Samsung goes colder and recommends -2 °F, noting on the same page that the USDA figure is below 0 °F. The awkward one is GE's own service guidance on measuring: it says a self-defrosting freezer normally reads anywhere between -5 °F and +8 °F when you check it in the morning, and the top of that range is well above the FDA figure. Both statements come from GE. Which one governs your freezer is a question for GE, not for us.

How long does it take for a fridge to reach a new temperature?

Twenty-four hours, and on this all four manufacturers agree, which is why it is the one number this page repeats without hedging. GE says to allow 24 hours to stabilise after start-up or an adjustment. Whirlpool says to allow a full 24 hours after any change before making another, and LG says to change the setting one increment at a time and wait 24 hours. If you turn the dial three notches and check an hour later, you have learned nothing and you are about to freeze the milk.

The lettuce keeps freezing. Is the fridge broken?

Usually not — it is usually too cold, or the food is sitting in the cold air stream. Whirlpool says that temperatures at or below 33 °F can freeze food in the fresh food section, especially near the air outlets, and gives 32 °F as the cold end of its own safe range. Move the setting one increment warmer, move the affected food away from the vent at the back, and wait a day before judging it. If it still freezes at a setting your thermometer says is around 37-40 °F, that is a fault and it goes to the manufacturer.

My fridge has been warm — do I have to throw the food out?

It depends on how long, and if you cannot answer that, throw it out. The FDA's rule is that food which has been above 40 °F for more than two hours is no longer safe; if the fridge is still at or below 40 °F, or the food was warm for two hours or less, it should be safe to eat. The trap is that a fridge that drifted warm overnight looks exactly like one that drifted warm ten minutes ago. This is also the argument for leaving a thermometer in there permanently: it is the only thing that can tell you afterwards.

Sources

Every specification on this page is traced to one of these sources. Tier 1 is a manufacturer document, a published standard, or a government safety authority. See Standards for the full tiering rule.

  1. Tier 1Refrigerator Thermometers - Cold Facts about Food SafetyU.S. Food and Drug Administration · accessed 2026-07-29 · re-verification due 2027-01-25
  2. Tier 1Are You Storing Food Safely?U.S. Food and Drug Administration · accessed 2026-07-29 · re-verification due 2027-01-25
  3. Tier 1Tips for Properly Setting the ControlsWhirlpool Corporation (Whirlpool Product Help) · accessed 2026-07-29 · re-verification due 2027-01-25
  4. Tier 1Proper Refrigerator Temperature for Fresh FoodWhirlpool Corporation · accessed 2026-07-29 · re-verification due 2027-01-25 · automated link check returned network error: The read operation timed out — verified by hand
  5. Tier 1Refrigerator - Initial TemperatureGE Appliances, a Haier company (GE Appliances Support) · accessed 2026-07-29 · re-verification due 2027-01-25
  6. Tier 1Refrigerator - Measuring Internal TemperaturesGE Appliances, a Haier company (GE Appliances Support) · accessed 2026-07-29 · re-verification due 2027-01-25
  7. Tier 1[LG Refrigerator Temperature] How do I adjust the refrigerator and freezer temperature?LG Electronics U.S.A. (LG USA Support Help Library) · accessed 2026-07-29 · re-verification due 2027-01-25
  8. Tier 1What temperature should I set my Samsung refrigerator to?Samsung Electronics America · accessed 2026-07-29 · re-verification due 2027-01-25

Revision history

Current version 1 · updated 2026-07-29 · next review due 2027-07-29

  1. v1 · 2026-07-29First draft. Sourced to FDA refrigerator and freezer food-safety guidance and to Whirlpool, GE Appliances, LG and Samsung temperature documentation. Both temperature values publish as consult-the-source with full conflict notes rather than as numbers: the FDA limit is 40 °F and 0 °F, LG's control range reaches 45 °F, GE's reaches 44 °F and GE's own expected freezer reading reaches +8 °F, and Samsung recommends -2 °F. Nothing is averaged and no source is preferred. No specification is marked verified: writing data/specs.json is refused to a delegate at every level (config.json models.never_delegate_human), and the skill requires an unwritable registry to publish as consult-the-manufacturer rather than as a verified value the registry has never seen. Source entries are staged in data/sources-additions-set-a-refrigerator-and-freezer-temperature.json for merge into data/sources.json by an authorized actor; the record holds on checks 2 and 3 until that merge happens.

Corrections to this page are listed in the public corrections log. Reports that are credible and not yet verified are listed in the public errata register, and an open one renders above the step it concerns.

Comments and corrections

Found an error? A correction with a manufacturer source is applied and logged publicly. You can also write to corrections@fixchecklist.com.

Every step above carries its own report control, which tags the report with that step so a correction reaches the right place. For anything about the procedure as a whole — the order of the sections, a step that is missing, something that did not match your equipment — use this: report something about this whole procedure.

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