Emergency HVAC Repair in Londonderry, NH
No heat on a January night or no AC in an August swelter — request service from an available local technician.
Get a Local Callback.
Name, number, town — details can wait.
Emergencies Move at Phone Speed
If your Londonderry home is unsafe — freezing, sweltering, or smelling of gas — don't type, dial. Calls to (603) 506-4389 get answered and routed to an available tech ahead of every routine appointment.
Emergency Checklist
- No heat below freezing — act before pipes do
- No AC in dangerous heat with kids, seniors, or pets home
- Propane or gas odor — leave, call your supplier or 911, then arrange repair
- CO alarm — out of the house and 911 first, always
- Burning smell or visible smoke from HVAC equipment
While the Tech Is En Route
- No heat: confirm thermostat, switch, breaker — and check your propane gauge if you're on a tank
- No cool: breaker, filter, and fan-only mode if the lines have iced
- Never run a generator or grill indoors or in the garage
Get a Tech Moving
One call starts a service request with emergency help.
Request Service in Londonderry
Tell us what the system's doing and a pro on the I-93 corridor will be in touch.
Londonderry Resources for This Service
Nearby towns we also serve
Londonderry HVAC also arranges emergency hvac in Derry.
What to say on a Londonderry emergency call
A Londonderry call to Londonderry HVAC is easier to place when it names whether the system is making heat, making cool air, or doing neither, plus the equipment age if that is known. Londonderry HVAC does not promise a same-day visit in Londonderry.
(603) 506-4389 is the direct line for Londonderry when the house is unsafe to stay in or the system is fully down. The Londonderry HVAC form is for a Londonderry request that can wait for a person to read it.
Other Jobs on the Londonderry List
When half a street replaces equipment the same year, it pays to know every option first.