Air Conditioning (AC) Maintenance Near Randolph, MA

$99 A/C Tune-Up & No-Breakdown Guarantee

$89 A/C Tune-Up & No-Breakdown Guarantee

$79 A/C Tune-Up & No-Breakdown Guarantee

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$89
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$79
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Noticing strange sounds, weak airflow, or rising energy bills? See the full list of hidden HVAC warning signs before it’s too late ↓

Air Conditioning (AC) Maintenance Near Randolph, MA

(508) 443-6451
(508) 443-6452
(508) 443-6453
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Honest, Fair-Priced Air Conditioning (AC) Maintenance in Randolph

Count on our experienced technicians. They receive ongoing training, use the right tools, and follow proven checklists. Our trucks are stocked with common parts, so most Air Conditioning (AC) Maintenance is completed on the first visit.

We explain every option and price before any work begins, so you choose with confidence and there are no surprises. We service most equipment brands and models. Your comfort is backed by our satisfaction guarantee.

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SumZero Energy Systems is Here for All of Your Air Conditioning (AC) Maintenance Needs in Randolph, MA!

  • Fully Stocked Trucks — We arrive prepared to service your system on the first visit.
  • Friendly Professionals — Courteous, on-time technicians who respect your home and schedule.
  • Fully Licensed & Insured — Safe, code-compliant workmanship you can trust.
  • Same Day Service Available — Fast response to keep you cool without delay.
  • 100% Satisfaction Guarantee — We stand behind our work, every time.
  • Complimentary 2nd Opinions — Clear, pressure-free guidance before you decide.

We’re ready to help with Air Conditioning (AC) Maintenance in Randolph, MA. Our team is proud to serve Randolph and the surrounding communities with professional, reliable service you can count on.

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Top-Quality Heating and Cooling Services Near Randolph, MA

Call Today for Your Air Conditioning (AC) Maintenance!

Reliable, High-Quality AC Maintenance That Restores Comfort Fast

Air Conditioning (AC) Maintenance and Randolph MA’s Trusted Heating & Cooling Professionals — Your Local Experts

Our Air Conditioning (AC) Maintenance service is a thorough tune-up that keeps your system running efficiently and prevents breakdowns: we inspect and clean coils and drains, replace or wash clogged filters, verify refrigerant levels, tighten electrical connections, calibrate thermostats, test capacitors and blower motors, measure airflow, and lubricate moving parts to catch issues like weak cooling, hot and cold spots, short cycling, strange noises, leaks, and rising energy bills before they disrupt your day. Beyond maintenance, SumZero Energy Systems provides fast diagnostics and repairs, new system installation and replacement, ductwork solutions, indoor air quality upgrades, smart thermostat integration, heat pump and furnace services, and convenient maintenance plans—delivered with “exceptional service” and “quality craftsmanship.” Count on our responsive team to restore comfort quickly and keep it that way; we proudly and professionally serve Randolph, MA and the surrounding area.

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Air Conditioning (AC) Maintenance in Randolph

Know the signs and risks

Noticing unusual performance? Review the key signs and risks that can affect comfort, efficiency, and costs. Acting early helps prevent breakdowns and protects your system. Count on SumZero Energy Systems in Randolph for thorough AC maintenance and trusted guidance.

Thermostat not responding

Sign

Thermostat doesn’t adjust temperature or seems unresponsive.

Risk

Faulty wiring or a broken thermostat reduces comfort and control.

Estimated Time for Diagnostic:
25 minutes

Frozen evaporator coil

Sign

Ice forming on the coil or refrigerant lines.

Risk

Restricted airflow or low refrigerant can damage the compressor.

Estimated Time for Diagnostic:
50 minutes

Uneven cooling in rooms

Sign

Some rooms feel cold while others stay hot.

Risk

Poor airflow balance strains the AC and creates uneven comfort.

Estimated Time for Diagnostic:
40 minutes

Water leaks around unit

Sign

Puddles or water stains forming near the indoor AC unit.

Risk

Drainage issues can lead to water damage, mold, or corrosion.

Estimated Time for Diagnostic:
35 minutes

Warm air instead of cool

Sign

AC runs but blows warm air into the rooms.

Risk

May indicate a refrigerant leak or failing compressor, which can stop cooling entirely.

Estimated Time for Diagnostic:
45 minutes

Unusual noises

Sign

Humming, rattling, or grinding sounds during operation.

Risk

Loose or damaged parts can cause bigger breakdowns if not fixed quickly.

Estimated Time for Diagnostic:
45 minutes

Rising energy bills

Sign

Energy bills suddenly higher with no change in usage.

Risk

System inefficiency wastes energy and increases operating costs.

Estimated Time for Diagnostic:
20 minutes

Musty or foul odors

Sign

Smell of mold, mildew, or burning when AC is running.

Risk

Mold growth or electrical issues can harm air quality and damage the system.

Estimated Time for Diagnostic:
30 minutes

Frequent cycling on/off

Sign

Unit constantly turns on and off without completing cycles.

Risk

Worn components reduce efficiency and shorten the system’s lifespan.

Estimated Time for Diagnostic:
40 minutes

Weak airflow from vents

Sign

Air barely comes out or feels weaker than usual across the vents.

Risk

Could be clogged ducts or a failing blower motor, leading to poor cooling performance.

Estimated Time for Diagnostic:
30 minutes

Schedule a Comprehensive Home Air Conditioning (AC) Maintenance Near You in Randolph, MA

Is your home’s heating system acting up? Trust SumZero Energy Systems for reliable repair services near you. Schedule your appointment today and get expert help on the way!

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Frequently Asked Questions About Air Conditioning (AC) Maintenance

You’re not alone—SumZero Energy Systems provides clear, trustworthy answers to help you keep your AC running efficiently and your home comfortable.

How do I schedule my A/C maintenance?
Just call or text us, or use our online scheduler. We’ll find a springtime slot that fits your schedule and keep your home cool all summer.
Is A/C maintenance safe for pets or sensitive people in my home?
Definitely. We use eco-friendly products and safe handling to ensure your pets and household are protected throughout the service.
Do you offer any maintenance plans or packages?
Yes! We offer annual comfort plans that include regular service, priority scheduling, and discounts on repairs—ask us for details.
What if you find a problem during the tune-up?
We’ll walk you through any issues, explain repair needs, and provide a clear estimate before beginning any fix.
Do you clean the condenser coil during maintenance?
Yes. We inspect and clean both indoor and outdoor coils—removing dirt and debris that can decrease efficiency and lead to breakdowns.
Can you perform maintenance if my A/C is still under warranty?
Absolutely. Our certified techs follow manufacturer guidelines and use approved parts so your warranty stays valid.
How long does a typical maintenance visit take?
Most visits take about 45 minutes to an hour—long enough for a thorough tune-up but short enough to fit into your day.
Will maintenance help lower my energy bills?
Yes—clean coils, proper refrigerant, & clear filters all improve efficiency. Many homeowners see 10–30% lower cooling costs post-maintenance.
What does your A/C maintenance check include?
Our full inspection covers refrigerant levels, coil cleaning, filter replacement, electrical checks, thermostat calibration, and airflow testing to optimize performance.
How often should I have my air conditioner serviced?
We recommend a professional tune-up at least once a year—ideally in spring—so your A/C runs efficiently and reliably during peak summer months.