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 and credited toward the repair if you go ahead.

Should I keep resetting my furnace?

Once is fine. Twice is a diagnostic. Three resets in a row means the safety circuits are catching a real problem — keep doing it and you can damage the heat exchanger or control board.

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 — What to Check

A gas furnace that won't fire up has a short list of causes. In Brooklyn most no-heat calls trace to one of five parts. Here's how to narrow it down — safely — before paying for a service call.

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.

1Hot surface ignitor — cracks and burns out (5–7 yr life)
2Flame sensor — sooted up, won't prove flame
3Gas valve — failed coil or stuck closed
4Control board — relays / thermostat circuit
5Inducer / pressure switch — won't prove draft

Inside a typical gas furnace cabinet: heat exchanger, burners, blower, gas valve, and control board.

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 and credited toward the repair.
2
The normal ignition sequence
A normal furnace start sequence happens in this order: inducer motor runs (about 30 seconds) → ignition click → hot surface ignitor glows → gas valve opens → burners ignite → blower motor starts (about 60 seconds later). If the sequence stops at any point, that's where the failure is. A technician can safely diagnose which component failed.
What to notice
- Notice if you hear the inducer fan but no click — points to control board or pressure switch
- Notice if the ignitor clicks but no flame appears — points to gas valve or no gas supply
- Notice if burners light then shut off after 5 seconds — often a dirty flame sensor (one of the cheapest repairs)
Still not working? Call (347) 997-3360 — diagnostic visits are flat-rate and credited toward the repair.
3
Notice if the air filter looks clogged
A clogged filter trips the high-limit safety switch — the furnace will start, run a few minutes, then shut off and lock out. If the cabinet feels warm to the touch from the outside and the system locks out, that's the symptom.
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 a licensed technician.

Need a Brooklyn tech today?

Same-day diagnostics when we can fit you in. Flat-rate visit, credited toward the repair.

(347) 997-3360