Trusted Plumbing & HVAC Company in Weymouth, Hingham, Hanover, MA & Beyond

Yes. Riggs Mechanical provides emergency HVAC and AC repair services for homeowners and businesses throughout Weymouth, Hingham, Hanover, MA, and surrounding areas. If your air conditioner stops working during extreme heat, starts leaking, makes loud noises, or fails unexpectedly, we work quickly to diagnose the issue and restore your cooling system as soon as possible.

Several issues can require emergency HVAC service, including:

1. AC blowing hot air during extreme temperatures
2. Complete system failure
3. Refrigerant or Freon leaks
4. Frozen evaporator coils
5. Burning smells or electrical odors
6. Loud banging or grinding noises
7. Water leaking from the HVAC system
8. Electrical issues causing the system to shut down
9. Heat pump failure during severe weather

Yes. We provide refrigerant checks, Freon additions, and AC recharge services for systems that are low on refrigerant. If your air conditioner is not cooling properly, low refrigerant levels may be the cause.

Our technicians inspect the system for leaks, test performance levels, and recharge refrigerant as needed to help restore proper cooling efficiency.

Common signs your air conditioner may be low on refrigerant include:

1. Warm air coming from vents
2. AC running constantly without cooling
3. Ice buildup on refrigerant lines or coils
4. Higher than normal energy bills
5. Weak airflow
6. Hissing or bubbling sounds near refrigerant lines
7. Longer cooling cycles

If you notice these issues, it is important to have the system inspected promptly to prevent further damage.

Many homeowners use the term “Freon” to refer to refrigerant in general. Freon is actually a brand name commonly associated with older refrigerants like R-22. Newer HVAC systems often use updated refrigerants such as R-410A, but many people still refer to all refrigerant services as Freon additions or Freon recharges.

In many cases, yes. We can inspect older air conditioning systems that use R-22 refrigerant and determine the best repair or replacement options. Since R-22 has been phased out, availability is more limited and costs may be higher, but we can help you evaluate whether repair or replacement makes the most sense for your system.

Response times vary depending on scheduling and weather conditions, but we prioritize emergency HVAC calls whenever possible, especially during extreme summer heat. Our goal is to restore your comfort quickly and minimize downtime.

Summer AC failures are often caused by:

1. Dirty coils or clogged filters
2. Low refrigerant levels
3. Capacitor failure
4. Frozen evaporator coils
5. Electrical issues
6. Thermostat malfunctions
7. Dirty condenser units
8. Lack of routine maintenance
9. Overworked systems during heat waves

Routine tune-ups and preventive maintenance can significantly reduce the risk of unexpected breakdowns.

Most HVAC systems should be professionally serviced at least once per year, ideally before the summer cooling season begins. Regular maintenance helps improve efficiency, reduce wear and tear, and catch small issues before they become costly repairs.

Our HVAC maintenance and tune-up services may include:

• Full system inspection
• Refrigerant level testing
• Freon additions if needed
• Coil cleaning
• Electrical connection testing
• Thermostat calibration
• Air filter inspection
• Condensate drain inspection
• Checking blower components
• Performance and airflow testing

Yes. A properly maintained HVAC system runs more efficiently, which can reduce energy consumption and monthly utility costs. Dirty filters, low refrigerant levels, and neglected components can force your system to work harder than necessary.

Several issues can cause this problem, including:

• Low refrigerant levels
• Dirty evaporator coils
• Frozen coils
• Thermostat problems
• Airflow restrictions
• Dirty air filters
• Failing compressors
• Electrical issues

Our technicians can inspect the system and identify the source of the issue quickly.

If your system freezes:

1. Turn the AC off
2. Check and replace the air filter if dirty
3. Allow the ice to thaw completely
4. Contact a professional HVAC technician

Frozen systems are commonly caused by airflow restrictions or low refrigerant levels and should be professionally inspected.

Yes. We service and repair heat pumps, ductless mini split systems, and traditional central air conditioning systems for residential and light commercial properties.

Absolutely. Poor airflow can result from dirty filters, duct issues, blower problems, or improperly sized systems. We can inspect your HVAC system and recommend solutions to improve airflow, comfort, and cooling performance throughout your home.

We offer routine HVAC maintenance services designed to help homeowners reduce breakdowns, improve efficiency, and keep systems operating reliably year-round. Preventive maintenance is especially important before peak summer temperatures arrive.

Replacement may be worth considering if:

Your system is over 10–15 years old

Repairs are becoming frequent

Energy bills continue increasing

Your AC uses outdated refrigerant like R-22

Cooling performance is inconsistent

Repair costs are becoming significant

We can evaluate your system and help you determine whether repair or replacement is the best long-term investment.