HVAC Contractor in South Duxbury, MA

Your System Fixed Right the First Time

When your heating or cooling fails, you need an HVAC contractor who shows up prepared and gets it done.

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South Duxbury HVAC Services

Comfort You Can Count On

Your home should feel right year-round. No more wondering if your system will make it through another Massachusetts winter or summer heat wave.

When your HVAC system works properly, you stop thinking about it. You’re not adjusting the thermostat every hour or listening for strange noises. You’re not calling contractors every few months for another “quick fix” that doesn’t last.

That’s what reliable heating and cooling service gets you. Systems that work when you need them. Repairs that actually solve the problem. And the confidence that comes from working with people who know what they’re doing and stand behind their work.

Plymouth County HVAC Company

We've Been Doing This Right

Dempsey Energy has built relationships with over 12,000 customers throughout Plymouth County by focusing on what actually matters to homeowners. We show up when we say we will, diagnose problems correctly, and fix them properly.

We handle both HVAC and plumbing services, which means you’re not juggling multiple contractors when systems overlap. Our Dempsey Comfort Club helps customers stay ahead of problems with regular maintenance and member benefits.

We’ve invested in professional systems to track customer needs and follow up on service calls because we understand that good service doesn’t end when the technician leaves your house.

HVAC Repair Process

Here's What Actually Happens

When you call, we listen to what’s happening with your system and schedule a time that works for you. No vague “sometime between 8 and 5” windows.

Our technician arrives with diagnostic tools and experience to figure out what’s actually wrong. We explain what we found in plain terms and give you options for fixing it. You know what you’re paying for before any work starts.

Once you approve the work, we complete the repair or installation using proper techniques and quality parts. We test the system to make sure it’s working correctly and clean up our work area. You get a clear explanation of what was done and any maintenance recommendations to prevent future problems.

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What's Included in Your Service

Every service call includes proper diagnosis using professional equipment, not guesswork. You get upfront pricing and clear explanations of what needs to be done and why.

Dempsey Energy handles heating system repairs, air conditioning service, new equipment installation, and emergency calls when your system fails at the worst possible time. We also provide plumbing services, so you have one reliable company for multiple home systems.

Our Dempsey Comfort Club membership includes regular maintenance visits to catch small problems before they become expensive repairs. Members get priority scheduling and special benefits that help keep systems running efficiently throughout the year.

How quickly can you respond to emergency HVAC calls in South Duxbury?

Emergency response times depend on current call volume and weather conditions, but we prioritize urgent calls when customers have no heat or air conditioning. We understand that HVAC emergencies can’t wait, especially during Massachusetts winters or summer heat waves. When you call for emergency service, we’ll give you a realistic timeframe and keep you updated if anything changes. Priority is given to situations where health and safety are concerns, such as complete heating failure in cold weather or cooling system problems affecting elderly residents or young children.

What should I do if my heating system won't turn on?

First, check your thermostat settings and make sure it’s set to heat mode with the temperature set higher than the current room temperature. Check your circuit breaker to see if it’s tripped, and make sure your furnace switch is in the “on” position. If you have a gas system, ensure the pilot light is lit. Replace your air filter if it’s dirty, as a clogged filter can cause system shutdowns. If these basic steps don’t solve the problem, it’s time to call a professional. Heating systems have safety features that shut them down when something’s wrong, and attempting complex repairs yourself can be dangerous and expensive.

Why is my HVAC system blowing hot air when it should be cooling?

When your air conditioning blows warm air, several issues could be the cause. Low refrigerant levels from a leak will prevent proper cooling. A dirty or frozen evaporator coil can’t absorb heat effectively. Thermostat problems might send wrong signals to your system. Outside condenser units can become clogged with debris, reducing efficiency. Ductwork problems or dirty air filters can also affect airflow and cooling performance. Some of these issues require professional diagnosis and repair, especially anything involving refrigerant, which requires special licensing to handle safely. The sooner you address cooling problems, the less likely you are to face a complete system breakdown during hot weather.

How often should I schedule maintenance for my HVAC system?

Most HVAC systems need professional maintenance twice per year – once before heating season and once before cooling season. This schedule allows technicians to catch problems early and ensure your system runs efficiently when you need it most. During maintenance visits, technicians clean components, check refrigerant levels, test safety features, and identify parts that might need replacement soon. Regular maintenance typically extends equipment life, improves energy efficiency, and prevents many emergency breakdowns. If you have older equipment or use your system heavily, more frequent check-ups might be beneficial. Our Comfort Club makes it easy to stay on schedule with automatic maintenance reminders.

What's the difference between repair and replacement for HVAC equipment?

The decision between repair and replacement depends on your system’s age, the cost of repairs, and how efficiently it’s running. Generally, if repair costs exceed 50% of replacement cost, or if your system is over 15 years old and having frequent problems, replacement makes more sense financially. Newer systems are significantly more energy-efficient, which can lower your utility bills enough to offset the investment over time. However, if your system is relatively new and the repair addresses a specific component failure, fixing it is usually the right choice. A qualified technician can assess your specific situation and give you honest recommendations based on your system’s condition and your budget.

Do you service all brands of HVAC equipment?

We work on most major HVAC brands and models, including both newer high-efficiency systems and older equipment. Our technicians carry common parts and have access to manufacturer-specific components when needed. However, some very old or uncommon brands might have parts availability issues that affect repair options. When you call, let us know your equipment brand and model if possible, so we can come prepared with the right tools and parts. We’ll be upfront about any limitations and help you understand your options, whether that’s repair, component replacement, or system upgrade recommendations.

Local Resources

South Duxbury, MA is located in Plymouth County in Massachusetts State