Furnace Repair Near Lexington, MA

A list of MA towns you can select form to list all available services in these towns.

$99 Furnace Repair Diagnostic

$99 Furnace Repair Diagnostic

$89 Furnace Repair Diagnostic

$79 Furnace Repair Diagnostic

$99
$99
Regular Price
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$89
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Ready to move forward? We’re prepared to review your home and confirm the best available option. Book directly through this page, or call or text (508) 738-3037 to speak with our team.

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(508) 738-3037
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Furnace Repair in Lexington with Honest, Fair Pricing

Our licensed technicians bring deep experience, ongoing training, and the right tools to every call. We arrive prepared and respect your home and time. In most cases, we complete your furnace repair on the first visit.

We are transparent from start to finish. Before any work begins, your technician explains the problem, reviews all options, and provides clear, upfront pricing. We service most equipment brands, and every job is backed by our satisfaction guarantee.

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

  • Fully Stocked Trucks — most fixes completed on the first visit
  • Friendly Professionals — courteous, respectful, and on time
  • Fully Licensed & Insured — work you can trust
  • Same Day Service Available — fast help when you need it
  • 100% Satisfaction Guarantee — we stand behind every repair
  • Complimentary 2nd Opinions — confidence before you commit

We’re here to help with Furnace Repair in Lexington, MA, and we’re proud to provide professional, local service you can count on. Whether it’s an urgent issue or routine repair, our team is ready to get your heat back on quickly and reliably.

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Top-Quality Heating and Cooling Services Near Lexington, MA

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Reliable, High-Quality Furnace Repair That Restores Comfort Fast

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

When your furnace falters, SumZero Energy Systems responds quickly with a precise diagnostic process to pinpoint the root cause and restore heat. Our certified technicians check airflow and filters, test igniters and flame sensors, inspect heat exchangers, verify gas pressure, calibrate thermostats, assess blower motors and control boards, and perform full safety checks. We resolve common issues such as no heat or weak heat, short cycling, uneven temperatures, frequent shutdowns, unusual noises, ignition failures, clogged filters, dirty burners, worn belts, and thermostat malfunctions—then complete repairs with quality parts and craftsmanship. Beyond furnace repair, we offer complete HVAC solutions: replacements and installations, seasonal tune-ups and maintenance plans, boiler service, heat pump and air conditioning repair, ductwork design and sealing, indoor air quality improvements, smart thermostat setup, and 24/7 emergency service—delivered with clear options, upfront pricing, and exceptional service. Trust SumZero Energy Systems for reliable results, responsive communication, and quality craftsmanship, proudly and professionally serving the Lexington, MA area.

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Proudly Serving Massachusetts Communities

Explore our heat pump and HVAC service area to see if we’re in your town. We’re committed to delivering expert comfort solutions across dozens of local communities. View Full Service Area ›

Schedule a Comprehensive Home Furnace Repair Near You in Lexington, MA

Furnace acting up? SumZero Energy Systems is Lexington, MA’s trusted furnace repair team—schedule your service today and get the heat back fast.

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