24/7 Emergency Service in Southern NH
No heat in January. No hot water. A flooded basement at midnight. We answer day or night, weekends and holidays included.
Text On-Call Directly
What We Handle 24/7
No Heat
Furnace or boiler failure in the middle of winter. We diagnose and repair all makes and models, or arrange emergency equipment if needed.
No Hot Water
Water heater failure, traditional tank or tankless. We offer same-day repair or replacement when available throughout Southern NH.
Burst or Leaking Pipe
Emergency plumbing calls, leaks, burst pipes, backed-up drains, a failed sump pump, and other plumbing failures that cannot wait until morning.
Electrical Emergency
Tripped breakers, flickering power, sparking outlets, or electrical failures connected to HVAC or plumbing equipment.
Gas Smell or Carbon Monoxide
Leave the building immediately and call 911 first. Once you are safe, call us. We respond to gas-related HVAC emergencies as a priority.
Generator Failure
Standby generator not starting during a power outage. We service all Generac and Kohler generators and respond to outage-related emergencies.
What To Do First in an Emergency
These steps take two minutes and can prevent additional damage while we are on the way.
- No heat: Check your thermostat batteries and settings. Check your circuit breaker panel for a tripped breaker. Check that your furnace filter is not completely clogged. If nothing is obvious, call us.
- No hot water: Check the circuit breaker for electric water heaters. Check the pilot light on gas units. Check for water on the floor around the tank. Call us with what you found.
- Leak or flooding: Locate your main water shutoff, usually in the basement near where the water line enters, and turn it off. This stops the flow before we arrive.
- Gas smell: Leave the building immediately without operating lights, switches, appliances, thermostats, or phones inside. Once you are safely away from the building, call 911 or your gas utility. Then call A.J. LeBlanc Heating at 603-623-0412 if HVAC service is needed.
- All emergencies: Text the on-call tech for the fastest response, or call 603-623-0412.
Text goes straight to the technician on call. Our phones are answered 24/7.
Text the On-Call TechWhat to have ready
- Your address and best callback number
- The brand and approximate age of your equipment if you know it
- What you have already checked or tried
- Whether there is water, gas, or visible damage
Customer priority
We triage emergency calls by safety, urgency, location, and technician availability. During severe weather or unusually high call volume, we will be honest about the earliest response we can provide.
Who We Are When It Matters Most
Direct to the Tech
Text the on-call tech directly through the form on this page. Our phones are answered 24/7.
Four Trades in One Call
Heating, cooling, plumbing, and electrical emergencies all handled under one roof. You call one number and we send whoever the job needs.
Licensed, Certified & Background-Checked
Every technician who comes to your home is a background-checked A.J. LeBlanc employee, not a subcontractor. The call is assigned to the licensed or certified professional the work requires.
Stocked Trucks
Our service vehicles carry common parts for furnaces, boilers, water heaters, and more. Many emergency repairs are completed on the first visit.
Temporary Equipment When Available
When a repair cannot be completed immediately, loaner space heaters, window air conditioners, or temporary water heaters may be available when they fit the situation and our inventory allows.
Emergency Service FAQ
Do you offer 24/7 emergency HVAC, plumbing, and electrical service in Southern NH?
Yes. Our phones are answered 24/7, including weekends and holidays. You can text the technician on call directly through the form on this page, or call 603-623-0412.
What should I do if I smell gas or my carbon monoxide alarm goes off?
Leave the building immediately without operating lights, switches, appliances, thermostats, or phones inside. Once you are safely away from the building, call 911 or your gas utility. Then call A.J. LeBlanc Heating at 603-623-0412 if HVAC service is needed.
How fast can you respond to an emergency?
Texting the on-call technician is the fastest way to reach us without going through the answering service. We triage emergency calls by safety, urgency, location, and technician availability. During severe weather or unusually high call volume, we will be honest about the earliest response we can provide.
What should I do first if I have no heat?
Check your thermostat batteries and settings, check your breaker panel for a tripped breaker, and make sure your furnace filter is not completely clogged. If nothing is obvious, text or call us.
What information should I have ready when I contact you?
Your address and best callback number, the brand and approximate age of your equipment if you know it, what you have already checked, and whether there is any water, gas, or visible damage.
Reach Us Now
Text the on-call tech directly for the fastest response. Our phones are answered 24/7.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.