A safe heat plan is an individualized agreement made with the older adult and their clinician. It should name a dependable cool place and a backup, set clinician-approved fluid and medication instructions, cover power outages, assign regular check-ins, and define what to do when symptoms appear. Use the plan before the first heat wave, then follow it whenever local heat conditions become dangerous.
Why heat risk is individual
Adults 65 and older are more prone to heat-related health problems, according to the Centers for Disease Control and Prevention (CDC). Age is only one part of the risk assessment. The body’s ability to sense thirst, sweat, regulate temperature and recover from heat can change with age, while chronic illness and medicines may add further risk.
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Health and medication factors
Heart, kidney, lung and other chronic conditions can change how much fluid and exertion are safe. Some medicines affect thirst, sweating, blood pressure, body temperature, hydration, electrolytes or how a medicine must be stored. CDC medication guidance specifically discusses diuretics (water pills), anticholinergic medicines and some psychotropic medicines as classes that may increase heat risk, but the effect depends on the exact drug and the person taking it.
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Housing without reliable air conditioning, unstable housing, poor insulation, limited transportation, disability, social isolation and outdoor work or caregiving can all make a hot day more hazardous. A person who lives alone may not recognize worsening symptoms or may be unable to reach a cool location without help. Include these practical realities when you build the plan; a medically sound instruction that cannot be carried out is not a workable safety plan.
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Build the plan before hot weather
Complete these steps with the older adult, a caregiver where appropriate, and the person’s doctor or pharmacist. Write the final instructions in a place that is easy to find and give a copy to the backup contact.
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Discuss the person’s normal environment and likely exposure
Ask where the person sleeps and spends the day, whether air conditioning works reliably, how hot the home becomes, how they would travel to another location, and whether they expect outdoor exposure for work, errands, exercise or caregiving. CDC’s clinician HEAT questionnaire and quick-start guide use these domains: housing and indoor conditions, access to cooling, emergency support, understanding of medicines and heat, and expected heat exposure.
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Name a primary cool location
For a home with dependable air conditioning, identify the room that stays coolest and make sure the unit can cool it safely. If the home lacks adequate air conditioning, choose a nearby air-conditioned location such as a relative’s home, library or other public facility that the local authority confirms is available.
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Choose and verify a backup location
Find a second cooled place in case the first is closed, full, inaccessible or without power. In the United States, CDC points readers to 2-1-1, local health departments, emergency-management agencies and local cooling-center listings. Confirm the address, opening hours, accessibility, pet or caregiver policies and transportation before a heat event. These services vary by community; a national listing does not guarantee that a particular center is operating.
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Make an individualized fluid plan
CDC generally advises drinking more water than usual and not waiting for thirst during hot weather. That advice does not override a clinician-prescribed fluid limit. Anyone with a fluid restriction or taking water pills should ask the prescribing clinician how much to drink and when. For chronic conditions or heavy sweating, ask whether and how to replace lost salt and minerals. Record the clinician’s specific instructions rather than writing a universal quantity that may be unsafe.
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Review every medicine with a clinician or pharmacist
Bring prescription medicines, over-the-counter products and supplements to the review. Ask whether any medicine changes thirst, sweating, temperature regulation, blood pressure, hydration or electrolytes; whether timing needs attention during heat; and how it should be stored. Never stop, skip or change a dose on your own. CDC’s medication-and-heat guidance (updated September 18, 2025) says changes must be individualized with a health professional.
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Plan for refrigerated medicines and electric medical equipment
Write down the storage range and maximum time outside refrigeration for each temperature-sensitive medicine, using instructions from the pharmacist or manufacturer. Identify backup power or an alternate location for equipment such as insulin supplies, nebulizers, ventilators and oxygen concentrators. Decide who will move the medicine or equipment and how the person will travel if an outage lasts longer than the approved storage or battery time.
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Assign a primary and backup check-in person
Choose who will call, visit or otherwise confirm the person’s condition, at what times, and what happens if there is no response. CDC’s older-adult guidance recommends that caregivers visit people in their care at least twice a day. A check-in should verify more than a greeting: ask whether the person has access to cooling, is following their fluid plan, knows the next cooling step and has any symptoms of heat stress.
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Put emergency information where it can be used
Keep the person’s name, address, clinician and pharmacy contacts, medication list, fluid instructions, cooling locations, transportation options and check-in contacts together. Include directions for the backup contact to reach the person and to obtain help if symptoms worsen or the person cannot answer.
Use a heat-day routine
Decide in advance who monitors conditions and who can change plans. CDC public guidance updated July 20, 2026, and its clinician resources recommend combining local heat information with the person’s medical plan.
Check HeatRisk and air quality
Review the CDC HeatRisk forecast and local air-quality information each day of a heat event. Poor air quality can make outdoor activity more hazardous even when the temperature is not at its peak. The assigned person should communicate a simple decision: stay indoors, move to the primary cool location, or leave for the backup location before the home becomes unsafe.
Cool the person and the room
Use air conditioning at home or go to the planned air-conditioned location. CDC says an indoor fan should be used only when the indoor temperature is below 90°F; above that threshold, a fan can increase body temperature. A fan is therefore not a substitute for air conditioning during very hot conditions. Close blinds or curtains where they reduce direct sun, and use cool showers or baths. Avoid heating the home with a stove or oven.
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Schedule activity for safer conditions
Avoid very strenuous activity during the hottest part of the day. If outdoor activity cannot be avoided, move it to a cooler time when possible, take frequent cooling breaks and use the person’s clinician-approved fluid plan. Loose, lightweight, light-colored clothing helps reduce heat gain. Do not treat clothing or a fan as a replacement for a cool environment.
Follow the medical plan exactly
Use the agreed fluid and medication instructions, including any limits. Do not increase fluids, add salt or alter medicines because a general heat-safety message suggests it; ask the clinician first when the person’s condition or treatment makes the correct action uncertain.
Recognize symptoms and act early
During every check-in, ask about symptoms rather than waiting for the person to volunteer them. CDC lists muscle cramping, unusually heavy sweating, shortness of breath, dizziness, headache, weakness and nausea as signs of overheating. Its older-adult guidance says to seek medical care immediately for heat-related illness symptoms such as cramps, headache, nausea or vomiting.
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A practical response sequence
- Stop the heat exposure. Move the person to the planned air-conditioned room or another cooled location.
- Contact the designated support person. Tell them what symptoms are present, when they began and whether the person can drink under their clinician’s instructions.
- Use only approved fluids and medicines. Do not force fluids when a clinician has prescribed a restriction, and do not give an unapproved salt or electrolyte product.
- Seek medical care immediately. Use the person’s established medical or emergency pathway rather than waiting for a scheduled check-in.
- Record the event. Note the conditions, symptoms, cooling steps and advice received so the clinician can adjust the plan.
Prepare for a power outage
Heat and outages can occur together, removing both air conditioning and the electricity needed by medical devices. Treat outage planning as a separate branch of the heat plan.
Before an outage
- Ask the electric utility about outage alerts, medical-equipment registries and restoration procedures available in the person’s area.
- Confirm the safe battery duration or backup-power requirement for every electric device.
- Identify a cooled location with reliable power and a transport plan to reach it.
- Keep medication-storage instructions and contact numbers with the emergency information.
- Agree on who checks the person if the usual phone or internet service fails.
When power fails
- Check the person’s immediate safety, indoor temperature, symptoms and access to drinking water under the approved plan.
- Protect refrigerated medicines and electric equipment according to the pharmacist, clinician and device instructions. Do not guess how long a medicine remains usable.
- Start the transport plan to the backup cooled location before the home becomes dangerously hot or equipment batteries are nearly depleted.
- Tell the check-in contact and clinician or equipment provider what has happened and follow their instructions.
Choose between home cooling and a public cooled location
The right arrangement depends on reliability and access, not on the name or type of appliance. Use these decision points with the older adult and caregiver.
| Decision point | Questions to answer | Planning implication |
|---|---|---|
| Dependable air conditioning | Does the home stay below the person’s safe indoor target throughout a heat event, including during an outage? | If not, make the public or family location the primary plan rather than waiting until symptoms appear. |
| Home suitability | Can the home safely accommodate the cooling equipment, and can the person operate it? | Account for electrical capacity, mobility, controls, noise and supervision. |
| Distance and transport | How will the person reach the alternate location, and who provides the ride? | Arrange accessible transport and a backup driver before hot weather. |
| Hours and accessibility | When is the location open, and can the person enter, rest, use the bathroom and bring needed medicines? | Verify details locally; do not assume a listed center is open or accessible. |
| Power and medical devices | Will the location support refrigeration, oxygen, ventilation or charging? | Confirm power and device arrangements with the site in advance. |
| Cost and barriers | Can the person afford installation, electricity and transport, or is a public option more practical? | Use 2-1-1 and local agencies to look for community assistance when purchasing or operating cooling is a barrier. |
CDC recommends air conditioning as a cooling approach but does not endorse a particular appliance or imply that buying one is feasible for every household. A cooling center, a relative’s air-conditioned home or another verified location may be safer when cost, installation, housing rules or power reliability make home equipment impractical.
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Adapt the plan to common barriers
No air conditioning or unreliable housing
Do not wait for the indoor temperature to become extreme. Make the nearby cooled location the default destination, arrange transportation and set a departure trigger based on the local forecast or the person’s indoor conditions. A fan can improve comfort below 90°F but is not adequate as the main cooling source above that temperature.
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Include the person’s transfer method, accessible transport, communication needs, hearing or vision aids and any supervision required to operate cooling equipment. Keep instructions short, visible and repeated in the format the person can use. The check-in person should confirm that the person can actually reach water, cooling and the exit route.
Living alone or socially isolated
Use two contacts rather than relying on one neighbor or relative. Set fixed visit or call times at least twice daily during dangerous heat, and define the escalation step for a missed response. Leave the plan with both contacts so a substitute can act without searching for information.
Frequent outdoor exposure
Move essential tasks to cooler hours, identify shaded or air-conditioned rest stops and arrange transportation home if symptoms begin. The person should not use thirst alone as the signal to drink; follow the individualized plan agreed with the clinician.
Turn the plan into a one-page checklist
A written plan is useful only if someone can follow it quickly. Put these completed items on one page and review them before each hot season:
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- The person’s medical conditions, medicines and clinician-approved fluid instructions.
- The primary cool location, backup location, verified hours, accessibility details and transport contacts.
- The person responsible for checking HeatRisk and air quality.
- The normal check-in times, primary contact, backup contact and missed-response action.
- Instructions for refrigerated medicines, batteries and electric medical devices during an outage.
- The person’s early symptoms and the instruction to seek medical care immediately if heat-illness symptoms occur.
- The date the clinician or pharmacist last reviewed medicines, fluids and outage needs.
Review the sheet whenever the person’s diagnosis, medicines, housing, mobility, transportation or access to cooling changes. CDC’s patient heat-planning guidance, published September 24, 2025, describes this kind of coordinated plan as a practical way to prepare with a doctor.
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