Carbon Monoxide Alarm Beeping?Leave the Home and Call 911
Move everyone and all pets into fresh air. Call 911 from outside and do not re-enter until emergency responders say it is safe. Home+ is not a fire department or medical emergency service.
Do not remain inside to troubleshoot the alarm or wait for an HVAC arrival.
Do this now
Four immediate steps for a sounding CO alarm
Step 1
Get everyone outside
Move people and pets into fresh air. Do not stay inside to find the source or collect belongings.
Step 2
Call 911 from outside
Tell the dispatcher that a carbon-monoxide alarm sounded or that CO poisoning is suspected.
Step 3
Report possible symptoms
Headache, dizziness, weakness, nausea, vomiting, chest pain or confusion can be signs of CO exposure.
Step 4
Wait for official clearance
Do not re-enter or restart fuel-burning equipment until emergency responders say the home is safe.
After responders clear re-entry
When Home+ can evaluate the heating equipment
If the fire department or utility identifies a furnace, boiler, water heater vent or related combustion-equipment concern, call Home+. Dispatch confirms the address, equipment capability, current ETA and diagnostic terms before scheduling.
Call intake
Share the service address, responder findings, affected equipment, fuel type and whether re-entry has been cleared.
Equipment diagnosis
When the request is within scope, the technician evaluates the identified furnace, boiler or related combustion equipment and visible venting conditions.
Written repair option
Review the diagnosis, proposed scope and price before authorizing work. A repair or first-visit completion is not guaranteed.
Return-to-service decision
Unsafe equipment stays off. Emergency responders—not an HVAC appointment—control the initial re-entry decision.
Post-clearance residential diagnostic
$199
Credited toward an approved repair. Dispatch confirms appointment-specific and after-hours terms. Diagnosis, parts, equipment condition, access and authorized scope determine the written repair price.
For an active alarm or possible exposure, call 911 first—not Home+.
Common CO sources
Fuel-burning equipment and exhaust need qualified inspection
This list is educational, not a reason to remain inside and investigate during an alarm.
Fuel-burning heating equipment
Gas- or oil-fired furnaces, boilers and water heaters can produce CO when combustion or venting is not operating correctly.
Chimneys, flues and vents
Damage, loose connections, corrosion or blockage can interfere with safe exhaust. These conditions require qualified inspection.
Generators and engines
Generators and vehicles can create fatal indoor CO exposure. Never run a generator in a home or garage, and never idle a vehicle in an attached garage.
Cooking and portable equipment
Charcoal grills, camp stoves and gas ovens must not be used to heat indoor living space.
Preventive care
Reduce future CO risk
CDC recommends annual service for heating systems and fuel-burning appliances, battery-operated or battery-backup CO alarms near sleeping areas, and detector replacement according to manufacturer instructions.
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Nassau County service path
Emergency clearance first. HVAC diagnosis second.
After the fire department or utility clears the home, call from Jericho or another covered Nassau County ZIP code. Dispatch confirms the exact address, equipment and current appointment option.
Is the CO alarm sounding now?
Leave the home and call 911 from outside. After responders say it is safe to re-enter, call Home+ if combustion equipment needs evaluation.