AC Repair & Maintenance in Weymouth, Hingham, Hanover, MA & Beyond

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Reliable AC Repair & Maintenance for Homes and Businesses

Restore Your Cooling Efficiency

When your air conditioner isn’t performing at its best, Riggs Mechanical Plumbing and HVAC is here to help. With over 20 years of experience, our team provides reliable AC Repair Services in Weymouth, Hingham, Hanover, MA & beyond, tailored to your needs. Whether it’s fixing heat pumps, replacing coils, or adding Freon, no repair is too big or small. We ensure that every component, from condensers to relays, is checked thoroughly to restore your cooling system to optimal performance. Your comfort is our priority, and we strive to complete repairs efficiently and effectively.

  • Bryant air conditioner unit on a concrete pad, against a grey-sided building.

Our comprehensive AC Repair Services in Weymouth, Hingham, Hanover, MA & beyond cover all critical aspects of your AC unit, ensuring lasting results. Regular issues like inadequate cooling, unusual noises, or uneven airflow can disrupt your comfort, but our skilled technicians are equipped to handle it all. Trust Riggs Mechanical for expert AC Repair Services in Abington, MA to bring your cooling system back to life and keep your space comfortable year-round.

What AC Repair Services Do We Offer?

When you need commercial or residential AC repair services in the Weymouth, Hingham, and Hanover, MA  area, look no further than Riggs Mechanical Plumbing and HVAC. To provide quality AC repair services, we will check:


  • Freon levels
  • Condensers
  • Air handlers
  • Hydrocoils
  • Relays
  • Capacitors
  • Heat pumps


No AC repair job is too big or too small for us to handle. Schedule an appointment with our trusted crew today.

Reliable AC Repair Services to Restore Your Comfort

Best AC Repair Services in Weymouth, Hingham, Hanover, MA & Beyond

When your AC unit isn’t keeping up with the heat, Riggs Mechanical Plumbing and HVAC has the solution. Our experienced team specializes in diagnosing and repairing all types of air conditioning issues, ensuring your system runs efficiently again. From troubleshooting heat pumps and replacing coils to inspecting condensers and air handlers, we leave no detail overlooked. We’re committed to providing prompt, professional service to keep your home or business cool and comfortable.


With over 20 years of expertise, we handle everything from minor fixes to major repairs. Our thorough approach includes checking key components like Freon, hydrocoils, and capacitors to identify and resolve the root of the problem. Don’t let a faulty AC unit disrupt your day—count on Riggs Mechanical for expert repairs that restore your peace of mind and keep your space comfortable.

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HVAC Maintenance & Outdoor AC Unit Care In Weymouth, Hingham, Hanover, MA & Beyond

Your outdoor air conditioning condenser works hard throughout the summer months. Exposure to dirt, leaves, grass clippings, weather, and everyday wear can reduce efficiency, increase energy costs, and eventually lead to costly breakdowns.


At Riggs Mechanical, our HVAC maintenance services help keep your entire cooling system operating at peak performance. During routine maintenance visits, we inspect both indoor and outdoor components, identify potential issues before they become major repairs, and help extend the life of your equipment.


Call (617) 828-1085 for a free quote or book your HVAC maintenance check today!

  • Bryant air conditioner unit on a concrete pad, against a grey-sided building.

HVAC Maintenance FAQs

  • Should refrigerant be checked during annual HVAC maintenance?

    Yes. Refrigerant levels should be inspected during routine maintenance. Low refrigerant can reduce cooling performance, increase energy consumption, and place unnecessary strain on your system. If needed, we can repair leaks and recharge the system with the proper refrigerant.

  • How often should my outdoor condenser be cleaned?

    Most systems benefit from a professional cleaning and inspection at least once per year. Homes near trees, construction areas, or coastal environments may require more frequent maintenance.

  • What happens during an HVAC maintenance visit?

    A professional maintenance appointment includes inspecting electrical components, checking refrigerant levels, cleaning coils, testing system performance, evaluating airflow, and ensuring your heating and cooling equipment operates safely and efficiently.

  • Can HVAC maintenance prevent expensive repairs?

    While no maintenance program can prevent every issue, regular service allows technicians to identify worn components, refrigerant leaks, and developing problems before they turn into major repairs or system failures.

  • Is it normal for refrigerant levels to get low over time?

    No. Refrigerant operates in a sealed system and should not be consumed during normal operation. If refrigerant is low, there is usually a leak that should be located and repaired before recharging the system.

  • Can topping off refrigerant fix my cooling problem?

    Sometimes, but not always. Low refrigerant may be only one symptom of a larger issue. Our technicians perform a full system diagnosis to determine whether a recharge, repair, or additional service is needed.

  • When is the best time to schedule AC maintenance?

    Spring is typically the best time to schedule maintenance before summer temperatures arrive. However, maintenance can be performed any time of year to improve system performance and identify issues early.

  • Why is my air conditioner blowing warm air?

    An AC system may blow warm air for several reasons, including low refrigerant levels, a dirty air filter, a malfunctioning thermostat, frozen evaporator coils, electrical issues, or a failing compressor. Our technicians can quickly diagnose the cause and restore proper cooling.

  • How can I tell if my AC needs repair or replacement?

    If your system is more than 10-15 years old, requires frequent repairs, struggles to cool your home, or causes unusually high energy bills, replacement may be more cost-effective. We can inspect your system and provide honest recommendations based on its condition and repair costs.

  • What are the signs of a refrigerant leak?

    Common signs of a refrigerant leak include:


    1. Warm air from vents
    2. Ice on refrigerant lines
    3. Longer cooling cycles
    4. Increased energy bills
    5. Hissing sounds near the unit
    6. Reduced cooling performance

    Our technicians can locate the leak, make repairs, and recharge the system if necessary.

  • Why is my air conditioner making strange noises?

    Unusual noises can indicate several issues:


    1. Banging or clanking may signal loose components.
    2. Buzzing can indicate electrical problems.
    3. Squealing may point to a worn belt or motor issue.
    4. Clicking could indicate thermostat or relay problems.

    Prompt repairs can often prevent more expensive damage.

  • What should I do if my AC stops working completely?

    First, check your thermostat settings, circuit breaker, and air filter. If everything appears normal and the system still won't operate, contact a professional HVAC technician to diagnose the issue safely.

  • Why does my AC keep turning on and off?

    Short cycling can be caused by:


    Dirty air filters

    Refrigerant issues

    Oversized equipment

    Thermostat problems

    Electrical component failures


    This condition can increase wear on your system and should be addressed quickly.

  • Can a dirty air filter cause AC problems?

    Yes. A clogged air filter restricts airflow, reduces efficiency, increases energy costs, and may cause coils to freeze. Replacing filters regularly is one of the easiest ways to protect your HVAC system.

  • Why is there water around my indoor AC unit?

    Water around your indoor unit may indicate a clogged condensate drain line, frozen evaporator coil, damaged drain pan, or excessive condensation. Ignoring leaks can lead to water damage and mold growth.

  • How long does an AC repair usually take?

    Many common repairs can be completed during a single service visit. More complex repairs involving major components or specialty parts may require additional time depending on the issue.

  • Why is my AC freezing up during hot weather?

    rozen coils are often caused by:


    1. Low refrigerant levels
    2. Restricted airflow
    3. Dirty filters
    4. Blocked vents
    5. Blower motor issues

    Turning the system off and scheduling service can help prevent further damage.

  • Do you provide emergency AC repair services?

    Yes. We offer emergency AC repair services throughout Weymouth, Hingham, Hanover, and surrounding South Shore communities. If your cooling system fails during extreme temperatures, we respond quickly to restore comfort.

  • Can you repair all brands of air conditioners?

    Yes. Our technicians service and repair most major air conditioning brands, including central air systems, heat pumps, ductless mini splits, and high-efficiency cooling systems.

  • What is the most expensive AC repair?

    Compressor replacement is often one of the most expensive air conditioning repairs. However, catching issues early through regular maintenance can help prevent major component failures and extend the life of your system.

  • Is it worth repairing an older air conditioner?

    Many older systems can still be repaired effectively. We evaluate the age, condition, efficiency, and repair costs of your equipment to help you determine whether repair or replacement makes the most financial sense.

  • How often should I have my AC inspected?

    Most manufacturers and HVAC professionals recommend annual inspections and maintenance before the cooling season begins. Regular service helps improve reliability, efficiency, and equipment lifespan.