How much does it cost to fix a furnace in Brooklyn?

Most no-heat repairs land between $245 (flame sensor cleaning) and $1,450 (control board). The diagnostic visit is flat-rate.

Should I keep resetting my furnace?

No. If the furnace has already shut itself down or locked out again after a restart, do not keep resetting it. Repeated resets can hide an intermittent safety problem and keep the equipment operating when it is trying to protect itself. Leave it off and have the cause diagnosed.

How long should a furnace last?

Standard 80% AFUE furnaces: 15–18 years. High-efficiency 95%+ condensing furnaces: 12–15 years (the secondary heat exchanger is the limiter). Older than that — get a replacement quote alongside any major repair.

Do you do same-day no-heat service?

Yes — no-heat is a priority dispatch in winter. Call before noon for the best chance of same-day; maintenance plan members get first slots.

Heating Troubleshooting

Furnace Not Turning On in Brooklyn — Common Causes & What to Notice

A gas furnace that won't fire up can stop at several points in its startup sequence. Here's what you can safely notice before calling and how those symptoms help a technician diagnose the system.

Call (347) 997-3360 Book a diagnostic

Anatomy of the system

Numbered parts below match the cost table further down — so you can see exactly where the failure usually sits.

Gas furnace component locations showing heat exchanger, inducer motor, pressure switch, burners, hot surface igniter, flame sensor, gas valve, control board and blower motor.

Signs and symptoms

What to notice before calling a technician. The red callouts mean stop and call us immediately.

1
Thermostat, power, and gas
Before assuming a furnace failure, three basic things to notice by sight. These account for the #1 cause of unnecessary service calls.
What to notice
- Notice if the thermostat is set to HEAT and above room temperature
- Notice if the furnace switch (looks like a light switch on the side of the unit) is in the ON position
- Notice whether other gas appliances (stove burners) are working normally
Still not working? Call (347) 997-3360 — diagnostic visits are flat-rate, quoted before we start.
2
The normal ignition sequence
A furnace normally starts in stages: the draft system starts, the ignition sequence begins, the burners light, and then the blower starts moving heated air. If the furnace stops partway through that sequence, note what you heard or saw and tell the technician. The stopping point helps guide diagnosis, but it does not by itself prove which component failed.
What to notice
- Notice whether you hear the furnace begin a startup sequence
- Notice whether the burners ever light
- Notice whether the furnace starts briefly and then shuts itself down
Still not working? Call (347) 997-3360 — diagnostic visits are flat-rate, quoted before we start.
3
Notice if the air filter looks clogged
A heavily clogged filter can restrict airflow enough to contribute to overheating and safety shutdowns. If the filter is easily accessible, look at its condition, but do not open furnace panels or bypass a shutdown. Repeated shutdowns need professional diagnosis.
4
Smell gas? Stop everything.
Any smell of gas — even faint — means leave the building immediately.
Gas smell = evacuate, do not start the furnace
If you smell gas, leave the building and call the gas company's emergency line immediately — National Grid (1-718-643-4050) or 911 from outside, then call us at (347) 997-3360. Do not flip switches, do not restart the furnace, and do not attempt to locate or fix a gas leak yourself.

What this usually costs in Brooklyn

When a technician diagnoses the issue, here's the typical cost range for the repair. The exact number depends on parts, access, and how long it's been failing.

Issue	Likely cause	Typical range
Clean flame sensor	Sooted sensor not proving flame	$150 – $400
Replace hot surface ignitor	Ignitor cracked / burned out	$185 – $425
Replace flame sensor	Sensor degraded beyond cleaning	$185 – $425
Replace pressure switch	Switch won't prove draft	$275 – $550
Replace inducer motor	Inducer fan failed	$550 – $950
Replace gas valve	Valve stuck or coil failed	$475 – $1,100
Replace control board	Board fault, no sequence	$550 – $1,200

Clean flame sensor

Sooted sensor not proving flame

$150 – $400

Replace hot surface ignitor

Ignitor cracked / burned out

$185 – $425

Replace flame sensor

Sensor degraded beyond cleaning

$185 – $425

Replace pressure switch

Switch won't prove draft

$275 – $550

Replace inducer motor

Inducer fan failed

$550 – $950

Replace gas valve

Valve stuck or coil failed

$475 – $1,100

Replace control board

Board fault, no sequence

$550 – $1,200

Typical range. Final cost confirmed on site after diagnosis.

FAQ

Common Questions

Related Brooklyn HVAC services

What to do next

Call (347) 997-3360 or book a diagnostic. Tell us what you observed — the sounds, the symptoms, when it started — and we'll know exactly what to check.

Do not attempt any repairs yourself. Gas, electrical, and refrigerant work requires an EPA-certified technician.

Need a Brooklyn tech today?

Same-day diagnostics when we can fit you in. Flat-rate visit, quoted before we start.

(347) 997-3360