A/C, Heat Pump &
Mini Split Service
A.J. LeBlanc Heating provides annual tune-ups for central air conditioners, heat pumps, and ductless mini splits across Southern NH. Family-owned since 1928, our EPA Section 608-certified technicians service all makes and models.
Central A/C Tune-Up
A.J. LeBlanc Heating's technicians inspect system operation, clean the outdoor coil, check airflow, and test key electrical and safety components. We evaluate refrigerant performance when operating measurements point to a charge or leak concern, without opening a critically charged ductless system unnecessarily.
- Evaluate refrigerant performance and check for leaks when indicated
- Inspect and clean condenser coil
- Replace or clean air filter
- Test capacitors, contactors, and electrical connections
- Inspect blower motor and measure airflow
- Check drain pan and condensate line
- Test thermostat calibration and system operation
- Provide written report of findings
Heat Pump Maintenance
A heat pump operates during both heating and cooling seasons, so it may accumulate more annual runtime than a cooling-only air conditioner. We service all major heat-pump lines, including the brands we install and systems installed by other contractors. We are a Bosch Platinum Dealer, Daikin Comfort Pro, LG Pro Dealer Platinum, and Mitsubishi Diamond Dealer.
- Test reversing valve and defrost cycle operation
- Evaluate refrigerant performance in the available operating mode
- Inspect outdoor coil for debris and bent fins
- Check crankcase heater and low-ambient operation
- Test backup heat strips (if installed)
- Inspect indoor air handler, coil, and blower
- Confirm proper drainage and clean drain pan
- Check heating and cooling performance
Mini Split Service & Repair
Ductless indoor units can collect dust on the blower wheel, coil, and drain pan beyond the washable filter. Professional cleaning addresses that buildup, protects airflow, and helps prevent drain and odor problems.
- Deep-clean indoor head: blower wheel, coil, and drain pan
- Rinse and replace washable filters
- Inspect refrigerant lineset and flare connections, with leak detection if a leak is suspected
- Check and tighten electrical connections
- Test every operating mode (cool, heat, fan, dry)
- Clean outdoor unit and inspect for ice or fin damage
- Diagnose component-level repair (board, fan, sensor) when needed
- Confirm remote and thermostat communication
Why Annual Cooling Service Pays Off
Support Cooling Performance
Dirty coils and airflow problems can reduce capacity and increase runtime. If operating measurements point to a refrigerant or leak concern, we diagnose it without opening a critically charged ductless system unnecessarily.
Efficient Operation
Clean coils and correct airflow can reduce the runtime needed to reach the setpoint. Actual energy use depends on the equipment, weather, thermostat settings, ductwork, and condition of the home.
Protect Key Components
A dirty outdoor coil can raise operating pressure and strain the compressor. Annual maintenance helps protect airflow and identify conditions that can make the system work harder.
Warranty Compliance
Manufacturer maintenance requirements vary by model and written warranty. Following the equipment's maintenance schedule and keeping service records helps document its care if a warranty question comes up.
A/C, Heat Pump & Mini Split FAQ
How often should I service my A/C or heat pump?
Service frequency depends on the equipment, use, site conditions, and manufacturer schedule. Annual service is common. A year-round heat pump may benefit from a spring and fall check when its runtime or the manufacturer's instructions call for it.
Do you service all A/C and mini split brands?
Yes. A.J. LeBlanc Heating is a Mitsubishi Diamond Dealer, Bosch Platinum Dealer, Daikin Comfort Pro, and LG Pro Dealer Platinum, and we also service Carrier, Trane, Lennox, Rheem, Goodman, Fujitsu, and other major brands. We service central A/C, heat pumps, and ductless mini splits of every make and model.
My A/C is blowing warm air, can you repair it same day?
We carry common service parts and complete many repairs during the first visit. The result depends on the failed component and parts availability, so we diagnose the system before promising the repair timing. Call us at 603-623-0412.
Is a heat pump harder to maintain than a regular A/C?
Heat-pump service also evaluates heating-specific operation, including reversing-valve and defrost behavior when operating conditions allow or the diagnosis calls for it. The exact checklist follows the equipment and season.
Do mini splits really need annual service?
Mini splits are low-maintenance, but they still need care. Indoor units can collect dust on the blower wheel and coil, condensate drains can clog, and outdoor coils can become restricted. Because mini splits are critically charged, we connect gauges only when system performance points to a refrigerant concern. Service frequency follows the equipment, use, and manufacturer schedule.
Do you offer emergency A/C repair?
Yes, 24/7. Call 603-623-0412 any time.
Schedule Your A/C Tune-Up
A professional tune-up can help protect airflow, drainage, electrical connections, and overall operation. It may also identify developing wear before peak-season demand fills the service calendar.
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.