Your Air Conditioner Stopped Cooling Mid-Season
AC Replacement in Allenstown for systems that no longer maintain indoor temperature or cycle properly
Lamarche Heating & Air installs new air conditioning systems for homeowners who face repeated compressor failures, refrigerant leaks that exceed repair value, or units that run constantly without lowering indoor temperature. You may have noticed louder operation, higher electric bills, or rooms that stay warm no matter how low you set the thermostat. When these issues persist despite repairs, replacement becomes the most practical option, especially when your current system has been in service for more than fifteen years and parts become difficult to source.
A replacement involves removing the old condenser and evaporator coil, running new refrigerant lines if sizing has changed, and installing a matched outdoor and indoor unit that meets current efficiency standards. In Allenstown, the seasonal temperature range means your system works harder during summer months, and an undersized or failing unit will cycle on and off without achieving the set point. We evaluate your ductwork, check airflow at each register, and confirm that the new tonnage matches your square footage and insulation levels.
If your current air conditioner struggles to keep up or requires frequent service calls, reach out to discuss what a replacement would involve for your home.
What Happens During Installation and Afterward
You receive a load calculation before installation begins, which accounts for window count, ceiling height, insulation quality, and sun exposure. This determines the correct tonnage so the new system does not short-cycle or run inefficiently. Lamarche Heating & Air disconnects refrigerant from the old unit, removes the condenser from its pad, and pulls the evaporator coil from the plenum above your furnace or air handler.
Once the new unit is set and line sets are connected, you will notice quieter operation, faster temperature recovery, and more consistent airflow from room to room. The system reaches your set point and shuts off rather than running continuously, and humidity levels drop noticeably during warm weather. Registers that previously delivered weak or warm air now push cool air steadily when the system calls for cooling.
We test refrigerant charge with gauges, verify voltage at the disconnect, and confirm that the thermostat communicates properly with the new control board. Installation typically requires four to six hours depending on accessibility and whether ductwork modifications are needed. We do not perform electrical panel upgrades or structural work to accommodate larger equipment; those items require separate coordination if your system is changing significantly in size or power demand.
Questions About Replacing Your Air Conditioner
Homeowners in Allenstown often ask about timing, compatibility with existing equipment, and what to expect once the new system is running.
What determines whether you need a replacement instead of a repair?
When the cost of fixing a compressor or coil exceeds half the price of a new system, and the unit is already more than twelve years old, replacement usually makes more financial sense since you avoid repeated service calls and gain improved efficiency.
How do you know what size air conditioner your home requires?
We perform a Manual J load calculation that factors in your home's insulation, window area, orientation, and ductwork capacity, ensuring the new unit is neither too large nor too small for the space it needs to cool.
When is the best time to schedule an AC replacement in Allenstown?
Spring or early summer allows for installation before peak heat, giving you time to address any ductwork or thermostat upgrades without the pressure of an immediate cooling failure during the warmest weeks.
Why does the outdoor unit need to match the indoor coil?
Mismatched components reduce efficiency, void manufacturer warranties, and can cause the system to operate outside design specifications, leading to premature failure or inadequate cooling performance.
What will you notice immediately after the new system starts running?
Rooms reach the thermostat setting faster, the compressor cycles off instead of running nonstop, and indoor humidity becomes noticeably lower within the first few hours of operation.
Lamarche Heating & Air can assess your current system and walk you through replacement options that match your home's cooling requirements, so contact us when you are ready to discuss next steps.