Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
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AfterFast, Reliable Furnace Repair Across Lexington
Most furnace repair calls in Lexington run $150 – $700 and can be completed in a single visit, with our crew typically on-site within a few hours of your call. We dispatch from our Boston office and keep technicians routed through Lexington daily, including the neighborhoods around Follen Heights, the Center, and along Massachusetts Avenue.
We know the heating reality here. Lexington’s housing stock, built mostly between 1950 and 1975, was designed for oil-fired baseboard heat, not forced air. When your furnace acts up, the fix often involves more than swapping a part. It means understanding how that equipment breathes in a house that was never engineered for ductwork. That’s the work our Furnace Repair team does differently.
Call (984) 538-9003 anytime. A live person answers, 24 hours a day.
Why Brandt HVAC Is Lexington’s Preferred Furnace Repair Company
We’ve earned our reputation in Lexington by showing up with names and faces you already know. Every technician is background-checked and identity-verified through our Threshold Verified standard. You get a photo, name, and arrival window before anyone knocks. At the door, they show a photo ID badge. If someone arrives who you weren’t told to expect, that visit is on us and we make it right.
Our pricing is written and fixed before any work starts. No exceptions. Every repair carries our 365-Day Done Right Promise: if it fails, we return at no charge. No argument.
Lexington homeowners call us because we speak their language. The town’s professional base arrives at consultations knowing Mass Save rebate tiers and cold-climate heat pump ratings. Our technicians can walk you through the difference between a Mitsubishi Hyper Heat and a standard inverter unit, or explain why your 1960s split-level’s static pressure matters more than the furnace brand you picked out.
We’re Furnace Repair in Lexington that treats your house like the specific building it is, not a generic system swap.
Furnace Tune Up in Lexington
Furnace Tune Up in Lexington runs $80 – $200 and should happen every fall before the heating season starts. Given that Lexington sits 11 – 12 miles inland and runs 3 – 5°F colder on winter nights than coastal towns, your system works harder here. A tune-up catches the problems that leave you calling at midnight when it’s 8°F.
What We Check and Clean
We pull and inspect the heat exchanger, test gas pressure and combustion, check blower amp draw, and measure temperature rise. In Lexington’s older Capes and Colonials, we also look at how your distribution system handles what the furnace produces. A clean furnace with blocked baseboard or an undersized return still won’t heat your house.
When Lexington Homeowners Need This
Schedule before October. The homeowners who wait until the first cold snap often find themselves in a queue behind everyone else. A tune-up in September means parts are in stock, technicians aren’t rushing from emergency to emergency, and you have time to address anything we find.
Emergency Furnace Repair in Lexington
Emergency Furnace Repair in Lexington is available around the clock because a failed heating system in January isn’t just uncomfortable, it’s dangerous. When temperatures drop below 10°F, which happens reliably here, pipes freeze and vulnerable residents face real risk. We answer live, every hour of every day.
What Counts as an Emergency
No heat at all. A failed ignition system in a house with infants or elderly residents. A suspected cracked heat exchanger, which can leak carbon monoxide. A blower motor that won’t start and temperatures falling fast. If you’re unsure, call. We’ll tell you honestly whether you need us tonight or can wait until morning.
How We Respond
Our Boston dispatch coordinates technicians already in the Lexington area. You get an ETA, a name, and a photo. The technician arrives with common parts for Trane, Lennox, Goodman, and Rheem systems. Most emergency repairs fall in that $150 – $700 range, and you’ll see the exact price in writing before anyone touches your equipment.
Trusted Brands We Service in Lexington
We repair and maintain all major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Lexington customers, this means we stock common ignitors, blower motors, gas valves, and control boards locally. We don’t order parts from three states away and make you wait. Our technicians carry the components that fail most often on the brands we see in Lexington’s housing stock, particularly the Rheem and Goodman units common in 1990s retrofits and the Trane systems found in newer construction near the Center.
Common Furnace Repair Problems We See in Lexington Homes
- Oversized furnaces cycling on high-limit. A 1960s Cape gets a new 80,000 BTU furnace because “that’s what was there before.” The original 1950s copper-fin baseboard and undersized returns can’t move that air. The furnace overheats, trips the high-limit, and the homeowner thinks they got a lemon.
- Failed heat exchangers on aging Burnham and Weil-McLain oil units. These boilers have limped along with delayed maintenance in tight 1,500-square-foot Capes. The crack develops slowly, then the CO alarm goes off, or the technician spots rust stains during a tune-up.
- Intermittent ignition traced to the electrical panel, not the furnace. Pre-1975 homes in Follen Heights and near Lexington Center often have 100-amp panels and aging wiring. The furnace demands more current than the circuit can deliver consistently. We find the real problem in the basement corner, not the mechanical room.
- Single-zone systems fighting unbalanced floor plans. Our crew was called to a 1960s split-level in the Follen Heights area where a homeowner had swapped an old oil furnace for a Carrier gas unit without addressing the original single-zone layout. The upstairs bedrooms were running cold and the high-limit tripped daily; we measured static pressure, found the original trunk undersized, and corrected the distribution before recommending any equipment change. A load calculation and proper duct sizing fixed the complaint without replacing the furnace again.
Pricing for Furnace Repair in Lexington, MA
Here’s what furnace work costs in Lexington’s market:
| Service | Price Range |
|---|---|
| Furnace Repair | $150 – $700 |
| Furnace Tune-Up | $80 – $200 |
Most calls land in the $200 – $400 range. A failed ignitor replacement typically runs $150 – $300, parts and labor included. Blower motor repairs run higher, sometimes reaching the upper end of our range if the motor is a special-order item for an older unit. Heat exchanger work can push toward $700 or more, and we’ll tell you honestly when replacement makes more sense than repair.
What affects your specific price: the age of your system (older parts cost more or take longer to source), whether your house needs electrical work before the furnace can run properly, and whether we’re solving a distribution problem along with the equipment failure. Every price is written before work starts. Estimates are free.
Call (984) 538-9003 for an exact quote on your system.
We Also Serve Cities Near Lexington
Our technicians work throughout the area, including Woburn, Winchester, Burlington, and Arlington. Scheduling is coordinated from our Boston office, with crews routed daily through Lexington and neighboring towns.
Serving Lexington, MA - Our Local Coverage Area
We’re based in the Lexington area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Furnace Repair in Lexington
Yes, but it requires solving the distribution problem first. Most furnace repair calls in Lexington’s 1950 – 1975 Capes and split-levels start with diagnosing how a replacement furnace will move air through a house that was never designed for it. That makes static pressure testing and load calculation more important than the furnace brand. We often recommend ductless mini-splits or hybrid heat-pump systems for these homes, which is why Lexington has become a ductless town in a way that distinguishes it from later Route 128 suburbs built with central air in mind. Call (984) 538-9003 and we’ll walk through your specific layout.
Short-cycling in a 1960s Lexington split-level usually means the furnace is producing more heat than the original ductwork can distribute. The high-limit safety switch shuts it down before the house warms. We measure static pressure and check trunk sizing. In the Follen Heights area, we’ve corrected this repeatedly by resizing distribution before touching the furnace itself. The equipment wasn’t necessarily wrong. The airflow math was. Call (984) 538-9003 for a diagnosis.
Yes, frequently. Pre-1975 homes in Lexington often have 100-amp panels and aging wiring that can’t deliver consistent current to a modern furnace. We find intermittent ignition and blower motor failures that trace to the panel, not the mechanical equipment. Before we recommend any new system, we check whether your electrical service can handle it. Sometimes the furnace repair is really an electrician referral first. We’ll tell you straight. Call (984) 538-9003 for an honest assessment.
Signs include soot buildup around the furnace cabinet, a strong or unusual odor when the system runs, frequent headaches or nausea in household members (possible carbon monoxide exposure), or a CO alarm that triggers repeatedly. In Lexington’s older Burnham and Weil-McLain oil units, we’ve seen heat exchangers crack after decades of delayed maintenance in tight mechanical spaces. If you suspect this, call (984) 538-9003 immediately. We will inspect it and shut the system down if it’s unsafe. This repair is guaranteed for 365 days – if it fails, we return at no charge.
A furnace tune-up includes heat exchanger inspection, combustion testing, gas pressure verification, blower amp draw check, and temperature rise measurement. In Lexington’s climate, it matters because this town runs 3 – 5°F colder than coastal areas on winter nights, pushing your heating load higher. A system that’s slightly out of spec in October becomes a no-heat call in January. The tune-up costs $80 – $200 and takes about 90 minutes. Call (984) 538-9003 to schedule before the cold arrives – estimates are free.
Ready to get your heat fixed right? Call Brandt HVAC at (984) 538-9003 for a free estimate. A live person will answer, and we’ll send you a name and photo of the technician who’s coming to your door.
Written by Devin Marlowe, Owner at Brandt HVAC, serving Lexington and surrounding communities.