AC Repair in Onset, MA

Your AC Fixed Right Today

Same-day air conditioning repair that actually lasts, with transparent pricing and no surprises.

A construction worker wearing a white hard hat and black gloves is installing or repairing a ceiling air conditioning unit in a modern building. He is standing on a ladder and looking at the camera.

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Ready for 5-Star Level Service?

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Air Conditioning Repair Services

Cool Comfort When You Need It

When your AC stops working, you need it fixed fast. Not next week, not when it’s convenient for the repair company – today.

You get technicians who show up on time, diagnose the real problem, and fix it right the first time. No band-aid solutions that leave you calling for service again next month.

Your home stays comfortable all summer long. Your energy bills stay reasonable because everything runs efficiently. And you don’t have to worry about whether that repair is actually going to hold up when you need it most.

Onset HVAC Repair Experts

Local Team, Real Results

Dempsey Energy has been keeping Plymouth County homes comfortable for years. We’ve built relationships with over 12,000 local customers who call us when their cooling systems need attention.

Our team knows Onset’s climate challenges and the common AC problems that hit homes in this area. We’re not just passing through – we’re part of the community.

When you call Dempsey Energy, you’re working with technicians who understand local homes, local weather patterns, and what it takes to keep your air conditioning running reliably through New England summers.

A technician wearing a yellow hard hat and blue shirt is repairing or installing a wall-mounted air conditioning unit.

AC Repair Process

Straightforward Repair Process

You call, we listen to what’s happening with your AC, and we schedule a time that works for you. Same-day service is available for emergency situations.

Our technician arrives with diagnostic tools and common parts. We test your system thoroughly to find the actual problem – not just the obvious symptom. You get a clear explanation of what’s wrong and what it’ll cost to fix before any work begins.

Once you approve the repair, we handle everything efficiently. We test the system to make sure it’s cooling properly, clean up our work area, and explain what we did. You get warranty protection on the repair work and parts we installed.

A maintenance worker in blue overalls and gloves inspects an outdoor HVAC unit on a rooftop. He holds a clipboard and appears to be taking notes.

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Complete AC Repair Services

Everything Your AC Needs

Dempsey Energy handles all types of air conditioning problems. Compressor failures, refrigerant leaks, electrical issues, thermostat problems, and airflow restrictions. We service all major AC brands and have access to quality replacement parts.

Our AC unit tune-up service catches problems before they turn into expensive repairs. This includes cleaning coils, checking refrigerant levels, testing electrical connections, and calibrating your thermostat for optimal performance.

Emergency repairs get priority scheduling because we understand that AC failures don’t wait for convenient times. Whether it’s a weekend, holiday, or the hottest day of the year, we respond quickly to restore your comfort.

A man in overalls stands on a ladder fixing or installing an air conditioner mounted on a wall.
Same-day service is available for most AC repairs, especially during emergency situations. When you call, we’ll assess your situation and provide a realistic timeframe based on our current schedule and parts availability. Emergency repairs get priority scheduling because we understand that AC failures create urgent comfort and safety concerns. Most common repairs can be completed in a single visit once our technician diagnoses the problem and you approve the work.
Repair costs depend on what’s actually wrong with your system. Simple fixes like thermostat issues or clogged filters cost less than major component replacements. Dempsey Energy provides upfront pricing before starting any work, so you know exactly what you’re paying. We don’t charge extra for evenings, weekends, or emergency calls – the repair price is the repair price. You’ll get a clear explanation of what needs to be fixed and why, along with warranty coverage on our work.
Yes, we work on all major AC brands and system types – central air, ductless mini-splits, heat pumps, and window units. Our technicians carry diagnostic equipment that works with different manufacturers and have access to quality replacement parts for most systems. If your AC is older or an unusual brand, we’ll let you know upfront if we can get the parts needed. We also provide honest advice about when repair makes sense versus replacement for aging systems.
Our AC unit tune-up includes cleaning the evaporator and condenser coils, checking refrigerant levels, testing electrical connections, calibrating the thermostat, inspecting ductwork for leaks, and replacing the air filter. We also test system performance to ensure it’s cooling efficiently and identify any developing problems before they cause breakdowns. This preventive maintenance typically extends your AC’s lifespan and keeps it running more efficiently, which saves money on energy bills and prevents emergency repairs during peak summer heat.
Absolutely. AC emergencies don’t follow business hours, especially during heat waves when your system is working hardest. We prioritize emergency calls and provide 24/7 availability for urgent cooling system failures. Emergency service includes the same upfront pricing and quality workmanship as scheduled repairs. We understand that losing AC during extreme heat isn’t just uncomfortable – it can be dangerous for elderly family members, young children, and anyone with health conditions that make them sensitive to high temperatures.
Quality repairs should last for years, not months. Dempsey Energy uses quality replacement parts and addresses the root cause of problems rather than applying temporary fixes. We warranty our repair work so you’re protected if something goes wrong with what we fixed. The lifespan of a repair depends on factors like the age of your system, how well it’s maintained, and the specific component that was repaired. We’ll give you realistic expectations about how long the repair should last and what you can do to maximize its lifespan.