
Extend Your Cooling Unit’s Lifespan With Our Routine AC Maintenance in Harwich, MA
At Monomoy Mechanical, our services do not end with the installation of your air conditioning. Maintenance is about preventing and minimizing the need for much more expensive replacement and AC repair services. Every system needs AC maintenance, which is why we encourage our clients to schedule an inspection at least once a year.
Maintenance Matters
Maintenance is one of the most important AC services we offer because it has the potential to save our clients a lot of money. It also keeps them aware of the condition of their equipment so they know when they should start planning for a replacement. A complete inspection and maintenance service by a licensed professional should cover all the essential parts of the system, including the condenser, air distribution, thermostat, and refrigerant.

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Signs You Need Maintenance
Observant owners have plenty of warning signs to pick up on if they are paying attention. If you haven’t had anyone look at your unit in a few years, then it’s time for a checkup regardless. However, you might need to bump up your planned maintenance date if you notice early warning signs developing.
Your system needs maintenance when:
- Performance steadily declines
- The system has a longer run time
- Ice builds around coils
- Poor thermostat control
Preventable AC Problems
A good maintenance checkup can address a lot of preventable problems that have serious consequences, including:
- Equipment damage from clogged filters
- Poor performance from low refrigerant
- Lower energy efficiency
- Circuit failure from electrical faults
Efficient Maintenance Starts With Us
As an experienced AC maintenance company, Monomoy Mechanical knows that efficiency is what it is all about. Ensuring optimal energy efficiency and comfort levels in your home or office means you need to keep your equipment in great shape. Our technicians know how to examine and take care of every component in your system, so you can count on us to do the job right. We have the experience and equipment to make sure you have a comfortable home, no matter how hot it gets outdoors.

Reviews That Speak For Themselves
At Monomoy Mechanical, your satisfaction is our priority! See for yourself what our customers have to say about working with us.
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“We placed a call for no AC in the heatwave, and they were there that day! Dave was great! He was honest and completed the work quickly!”- Robert B.
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“I was very pleased with the techs from Monomoy Mechanical. They were prompt, neat ,and showed concern for my issues.”- David S.
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“They installed my new furnace/boiler, replacing a 35-year-old unit. Everyone who worked on the new system was an expert. To me, the install is an engineering work of art. Everything was explained, and they helped me pursue the MASS SAVE rebate as well.”- Peg H.
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“Dave is awesome, definitely my go-to guy. He’s done work for me at my business and home. He’s always on time, honest, and very informative. Fits you into his schedule super fast and answers your calls right away. The pricing is very fair!”- Karina H.
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“Called Monomoy Mechanical after trying to troubleshoot my AC with no luck. They arrived within two hours. They immediately identified the problem, provided a solution, and fixed it. Very reasonably priced! I highly recommend Monomoy Mechanical!”- Mary S.
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“Dave and his crew from Monomoy Mechanical did an excellent job on both helping us pick out a new A/C system and installing it. They even went the extra mile to stay late to make sure we had a working system that night! We couldn’t be happier!”- Bruce H.
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“Matt and Dave were very responsive, knowledgeable, and professional. Dave showed up when he said he would and took care of the work we agreed on quickly.”- Jamie P.
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“They called back in minutes despite the end of the work day and scheduled me for the next morning. The technician, Tim, was very attentive in diagnosing our mini-split problem, and fixed it the same day. His boss Chris was very attentive too. Recommend!”- Ekaterina D.
Frequently Asked Questions
Have questions? We are here to help. Still have questions or can't find the answer you need? Give us a call at 508-623-6952 today!
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Why is water leaking from my system?
Many types of AC units produce water as a by-product of heat exchange, usually through a coil or radiator. However, water should never be leaking into the home or produce noticeable pooling around the outdoor equipment. Contact us right away if you need AC repair.
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How often do I need a maintenance check?
Annual maintenance is the general rule to follow, but you should talk to a licensed HVAC technician to arrange a schedule tailored to your situation.
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How often should I change my air filters?
All air filters slowly get dirty over time, but they can move past their prime much quicker when there’s lots of dust, dirt, and pet hair in the air. Intake filters should be replaced every 1 to 3 months in most situations.
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How long do AC systems usually last?
A properly-maintained air conditioning setup can last anywhere from 5 to 25 years depending on the quality, type, and usage rate. Many modern systems are designed to last between 10 and 20 years.