Serving Suffolk & Nassau County · Long Island, NY

[email protected]631-331-2102
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A1 Heating & Air Conditioning
631-331-2102

Heating Services

Furnace Repair
Long Island.

Gas and oil furnace repair throughout Suffolk and Nassau County. Same-day and 24/7 emergency service — we'll get your heat back on fast.

Schedule Furnace Repair 631-331-2102

What we repair

Gas & Oil Furnace Repair
All Brands.

A1's licensed technicians repair all makes and models of gas and oil furnaces throughout Long Island. We carry common parts on our trucks for fast, same-day repairs, and we provide upfront pricing before any work begins.

Gas furnace repair & service
Oil furnace repair & service
Igniter & flame sensor replacement
Heat exchanger inspection & repair
Blower motor repair & replacement
Gas valve & pressure switch repair
Furnace control board replacement
Emergency furnace repair

Brands we service

We repair and service furnaces from all major manufacturers including:

Lennox
Carrier
Trane
Rheem
Bryant
Goodman
American Standard
York

24/7 emergency service

Furnace not working?

Call A1 now — 24/7 emergency furnace repair across Long Island.

Call 631-331-2102

Common questions

Furnace Repair FAQs

Why won't my furnace start?

The most common causes are a faulty igniter or flame sensor, a tripped safety switch, a dirty air filter restricting airflow, a malfunctioning thermostat, or a gas supply issue. Call A1 at 631-331-2102 and we'll diagnose it fast.

How long does a furnace last on Long Island?

Most gas furnaces last 15–20 years with proper maintenance. Oil furnaces can last 20–25 years. If your furnace is approaching the end of its lifespan and requiring frequent repairs, replacement is often the more cost-effective choice.

Is it safe to run a furnace with a cracked heat exchanger?

No. A cracked heat exchanger can allow carbon monoxide to leak into your home, which is a serious safety hazard. If we find a cracked heat exchanger during inspection, we'll recommend immediate repair or replacement.

How much does furnace repair cost on Long Island?

Furnace repair costs vary widely. Minor repairs like an igniter replacement are relatively inexpensive. Major repairs like a heat exchanger or control board can cost significantly more. We provide upfront pricing after diagnosis — no surprises.

Do you offer emergency furnace repair on Long Island?

Yes. A1 offers 24/7 emergency furnace repair throughout Long Island. A furnace failure in winter is never something you should wait on — call 631-331-2102 any time.

Same-day & emergency service

Furnace Repair on Long Island

Licensed, insured, and trusted by Long Island homeowners since 2019. Call now or request service online.

Request Service 631-331-2102