Furnace Maintenance Near Lexington, MA

$99 Furnace Tune-Up & No-Breakdown Guarantee

$89 Furnace Tune-Up & No-Breakdown Guarantee

$79 Furnace Tune-Up & No-Breakdown Guarantee

$99
Regular Price
$99
$89
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Regular Price
$99
$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 ↓

Furnace Maintenance Near Lexington, MA

(508) 443-6451
(508) 443-6452
(508) 443-6453
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Furnace Maintenance in Lexington with Honest, Upfront Pricing

Our technicians are certified, well-trained, and equipped with the right tools. We arrive prepared to protect your home and your time. Most Furnace Maintenance is completed on the first visit.

We believe in clear communication. Before any work begins, we explain every option and the price so you can choose with confidence. We service most equipment brands, and your satisfaction is guaranteed.

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SumZero Energy Systems is Here for All of Your Furnace Maintenance Needs in Lexington, MA!

  • Fully Stocked Trucks — we arrive prepared to fix most issues on the first visit  
  • Friendly Professionals — courteous, respectful techs who keep your home clean  
  • Fully Licensed & Insured — safety-first service you can trust  
  • Same Day Service Available — fast scheduling to restore comfort quickly  
  • 100% Satisfaction Guarantee — we stand behind our work, every time  
  • Complimentary 2nd Opinions — clear, honest guidance before you decide

Need Furnace Maintenance in Lexington, MA? We’re ready to help. SumZero Energy Systems proudly delivers professional, local service you can rely on—right here in the Lexington community.

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Top-Quality Heating and Cooling Services Near Lexington, MA

Call Today for Your Furnace Maintenance!

Reliable, High-Quality Furnace Maintenance to Solve Issues Fast and Restore Your Comfort

Furnace Maintenance and Lexington MA’s Trusted Heating & Cooling Professionals — Your Local Experts

At SumZero Energy Systems, our Furnace Maintenance is a top-to-bottom tune-up designed to keep your system safe, efficient, and dependable. We inspect and calibrate thermostats, replace or clean filters, test safety controls, verify gas pressure, clean burners and flame sensors, check ignition components, assess the heat exchanger, tighten electrical connections, lubricate moving parts, measure airflow, and clear condensate lines on high-efficiency units. This proactive approach uncovers and fixes common problems like uneven heating, short cycling, ignition failures, poor airflow, rising energy bills, unusual noises, and system shutdowns before they become costly breakdowns. Beyond maintenance, we provide expert furnace repair, replacement and installation, heat pump and air conditioning services, ductless mini-splits, indoor air quality solutions, duct repair and sealing, smart thermostats, and emergency service to restore heat fast. Count on our exceptional service, transparent recommendations, and quality craftsmanship on every visit. We are proudly and professionally serving the Lexington, MA area.

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Furnace Maintenance in Lexington

Know the early signs and risks

If your system isn’t performing like it should, take a moment to review the signs and risks of furnace issues. Acting early can prevent bigger problems. For trusted guidance and service in Lexington, count on SumZero Energy Systems.

Unpleasant odors from vents

Sign

Accumulated dust, mold, or a gas leak in the system.o Risks: Exposure to poor air quality or potential health hazards from gas leaks.

Risk
Estimated Time for Diagnostic:
30-45 minutes

Uneven heating in rooms

Sign

Leaky ducts, insufficient insulation, or a failing blower fan.

Risk

Cold spots in your home can create discomfort and force overuse of your system, reducing its lifespan.

Estimated Time for Diagnostic:
60 minutes

Frequent cycling on and off

Sign

Faulty thermostat, dirty sensors, or short-cycling due to overheating.

Risk

Increased energy bills and unnecessary wear and tear on the system, leading to costly repairs.

Estimated Time for Diagnostic:
45 minutes

Furnace not producing heat

Sign

Malfunctioning thermostat, clogged filters, or ignition failure.

Risk

Risk of frozen pipes and dangerously cold indoor temperatures, especially for children or elderly family members.

Estimated Time for Diagnostic:
45–60 minutes

Noisy furnace operation

Sign

Loose or damaged components, such as a failing blower motor or dirty burners.

Risk

Noise can signal mechanical failure, leading to a complete system breakdown and leaving your family without heat during the coldest months.

Estimated Time for Diagnostic:
45–60 minutes

Schedule a Comprehensive Home Furnace Maintenance Near You in Lexington, 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 Furnace Maintenance

You’re not alone—SumZero Energy Systems is here with clear, trustworthy answers to the most common furnace maintenance questions.

Why choose SumZero for furnace maintenance?
Our experienced team delivers detailed service, honest advice, and flexible scheduling. We focus on keeping your home safe, warm, and worry-free all winter long.
Is furnace maintenance safe for homes with pets and children?
Yes. Our team uses safe, clean methods and respects your home environment—we’ll even help ensure filters are pet-hair-friendly if needed.
What happens if you find a problem during maintenance?
We’ll explain the issue clearly, offer a fair repair estimate, and if possible, fix it during the same visit with your approval.
Do you offer maintenance plans?
We offer Comfort Club memberships that include annual service visits, priority scheduling, and discounts on future repairs or upgrades.
Will regular maintenance keep my warranty valid?
Yes. Most manufacturers require documented annual maintenance to keep the warranty valid. Our visit includes documentation you can keep on file.
Can furnace maintenance help lower my energy bills?
Yes—clean filters, efficient burners, and proper airflow all reduce strain on the system, which can help cut your heating costs.
How long does a maintenance visit take?
Most furnace maintenance appointments take about 45 to 60 minutes depending on the age and condition of the system.
Why is furnace maintenance important?
Regular maintenance prevents breakdowns, improves energy efficiency, extends your system's life, and ensures safe operation throughout winter.
What’s included in a furnace maintenance visit?
Our maintenance includes a full system inspection, filter replacement, burner cleaning, safety check, airflow testing, and thermostat calibration.
How often should I schedule furnace maintenance?
We recommend scheduling furnace maintenance once a year—preferably in the fall—to ensure it runs safely and efficiently through the heating season.