24/7 Furnace & Heating Repair in Northern Virginia & Maryland

Emergency & Same-Day Furnace Repair

A furnace that dies at 2 a.m. doesn’t care about business hours — and neither do we. AVS offers 24/7 emergency furnace repair across Northern Virginia and Maryland, so a no-heat call at night or on a holiday still gets a technician scheduled.

Same-day service, the same $90 visit fee, and no overtime markup — the price is identical at midnight on a Sunday as at noon on a Tuesday. Your technician finds the cause and gives you a written price before any work starts.

If your home is losing heat fast, call VA (703) 457-9028 or MD (301) 686-7129 now.

Furnace Not Working? Signs You Need a Technician

Some furnace problems announce themselves loudly. Others creep up until the system quits on the coldest night of the year. If your furnace is not working — or acting strange — these are the signs to call for heating repair:

• Blowing cold air. The burners fire but the vents push cold air, or the fan runs and nothing heats — often an ignition, flame sensor, or high-limit switch issue.
• Furnace won’t turn on at all. No sound, no click, no fan — check the thermostat and breaker first (see below), then call.
• Short-cycling. The furnace clicks on, runs a few minutes, then shuts off — over and over. It overheats, trips a safety switch, and never finishes a heating cycle.
• Ignition lockout. The furnace tries to start several times, fails, and locks itself out — usually the igniter, flame sensor, or gas supply (why furnaces go into ignition lockout).
• Burner won’t light. You hear the inducer motor and clicking, but no flame follows.
• A gas smell. Stop. Leave the house, don’t touch switches or the gas valve, and call 911 and your gas company from a safe distance. Only schedule a technician after the home is cleared safe.
• Loud bangs or booms on startup. Delayed ignition can rattle the whole unit — don’t ignore it.
• Yellow, lazy flame. A healthy gas flame is steady and blue. A yellow or flickering flame can signal a combustion or ventilation problem worth a professional look.

One or more of these sounding familiar? Call VA (703) 457-9028 · MD (301) 686-7129 — $90 visit, price before work.

Safe Checks Before You Call

Before you pay for a visit, five quick checks sometimes bring the heat back. None of these ask you to open panels or touch anything dangerous:

• Thermostat. Set to HEAT (not just ON or AUTO-fan), a few degrees above room temperature. Replace the batteries if the display is blank.
• Filter. A clogged filter chokes airflow and can trip the high-limit safety switch, shutting the furnace down. If you can’t remember the last change, swap it.
• Furnace switch. Near the unit there’s usually a wall switch that looks like a light switch — sometimes labeled. Someone may have flipped it off by accident.
• Breaker. Check the furnace breaker in your panel. If it tripped once, reset it. If it trips again, stop — call us.
• Blower door panel. The access door has a safety switch. If it isn’t fully seated after a filter change, the furnace won’t run.

Do not open the burner compartment, and never touch the gas valve or try to relight anything yourself. If the heat still isn’t back after these checks, the problem is inside the unit — call VA (703) 457-9028 · MD (301) 686-7129.

What Happens When You Call AVS

A clear process, from the first call to a warm house:

• You call or send the form. Describe the symptom in your own words — “blowing cold air,” “won’t turn on,” “banging noise.” That’s all we need.
• Same-day scheduling. Our 24/7 dispatch finds the first available window — evenings and weekends at no extra charge.
• $90 diagnostic visit. We test the ignition system, airflow, electrical connections, and safety controls.
• Written, fixed price. You approve an exact number before any repair begins. It doesn’t change halfway through the job.
• Repair and test. After you approve the price, the technician makes the gas furnace repair or electric furnace repair and checks that the system is heating before leaving.

If the diagnosis points toward replacement instead of repair, we’ll show you the math — see the $5,000 rule below — and quote both options.

Furnace Repairs We Handle

Our technicians repair gas and electric furnaces of every major brand, including the parts that fail most often in Northern Virginia winters:

• Hot surface igniter: the single most common failure; a worn igniter won’t glow hot enough to light the burners
• Flame sensor: a dirty or corroded sensor shuts the gas off seconds after ignition, causing short-cycling
• Draft inducer motor: if it can’t prove exhaust flow, the furnace never lights
• Pressure switch: a stuck or failed switch locks out the ignition sequence
• Control board: erratic behavior, blinking error codes, or a completely dead unit
• Blower motor: weak airflow, overheating, or no air movement at all
• Gas valve: if the valve won’t open, no gas reaches the burners (3 signs of a bad gas valve)
• Heat exchanger inspection: a cracked heat exchanger can leak carbon monoxide into your home; the technician checks it and will tell you if the unit is unsafe

When a part is obsolete, backordered, or the furnace is genuinely past its safe life, we’ll say so — and quote both a repair price and a replacement estimate so you can decide with real numbers.

Furnace Brands We Repair

We repair York furnaces in Fairfax and across Northern Virginia and Maryland, along with every other major brand:

Trane · Carrier · Lennox · Rheem · Bryant · York · Goodman · Amana · Mitsubishi · American Standard · Ameristar

Furnace Repair Cost

A furnace repair visit costs $90, with a written price before any work begins. Night, weekend, and holiday visits cost exactly the same — no overtime fees.

From there, the cost depends on the part. These ranges come from our furnace repair cost guide:

On average, homeowners spend about $289 per repair (most land between $131 and $458). Gas furnace repair typically runs $375 – $1,200 since gas systems are more complex. The price we quote on-site is the price you pay.

Repair or Replace Your Furnace? The $5,000 Rule

Here’s the quick math our technicians use at the kitchen table when a repair quote gets serious — it’s called the $5,000 rule:

Multiply your furnace’s age by the cost of the repair. If the result is over $5,000, replacement is usually the smarter money. If it’s under, repair it.

• 16-year-old furnace × $350 repair = $5,600 → lean toward replacement
• 8-year-old furnace × $400 repair = $3,200 → repair it

A few situations tilt the answer further toward replacement even when the math is close: a third breakdown in one winter, gas bills climbing year over year, or a cracked heat exchanger (a safety issue, not just a cost one).

If replacement makes more sense, we’ll tell you — and our furnace replacement estimates are free, in writing, with financing options. Get both numbers, then decide: VA (703) 457-9028 · MD (301) 686-7129.

Why Northern Virginia & Maryland Homeowners Call AVS

• Family-owned since 1991: Anil Sareen of AVS has been featured on ABC7 News
• Licensed in Virginia and Maryland: VA HVAC 2705039269A · MD HVAC 520714137895 · MD Home Improvement 4192876
• 4.8 stars from 354 Google reviews across Fairfax, Falls Church, and Bethesda
• No overtime fees: same price at 2 a.m. Sunday as Tuesday afternoon
• $90 visit, written price before work: approve the number or pay nothing more
• Same-day service for no-heat emergencies

After the repair, ask about our VIP Maintenance Plan — two inspections a year, priority scheduling, and repair discounts.

Brands we service: Carrier · Trane · Lennox · Bryant · Goodman · Rheem · York · American Standard · Amana · Mitsubishi.

Commercial Furnace Repair

AVS also repairs furnaces and heating equipment for shops, offices and other commercial buildings across Northern Virginia and Maryland, including rooftop units. See commercial HVAC installation, repair and replacement.