My furnace stopped working on a cold morning. What should I check first?

Several simple checks before calling: thermostat set to 'heat' mode and setpoint above current room temperature, filter not severely loaded, furnace power switch near the unit is on, circuit breaker hasn't tripped, gas valve at the furnace shutoff is on. If basic checks don't resolve the issue, call us at (402) 258-6703. While waiting for dispatch in winter: open cabinet doors below sinks on exterior walls, let faucets drip slightly on exterior-wall faucets, layer up in warm clothing, close off unused rooms. Use portable electric space heaters cautiously; never use unvented combustion appliances indoors.

How quickly do you respond to no-heat calls in winter?

Depends on time of day, outdoor temperature, household vulnerability, and weather conditions. Normal-conditions business hours: typically 2-6 hours. Normal-conditions after-hours: typically 4-12 hours. Vulnerable households (infants, elderly, anyone with health conditions) receive priority dispatch regardless of conditions. During polar vortex events or sustained cold demand surges (like January 2019's -22°F week), dispatch times extend substantially — worst case observed was 36 hours at peak demand for non-vulnerable households. We're transparent with customers during demand surges about expected timing.

What does a cracked heat exchanger mean and is it dangerous?

The heat exchanger transfers heat from combustion gases to the air being circulated through your home. A cracked heat exchanger can allow combustion gases (including carbon monoxide) to mix with the supply air being delivered to your living space. This is a serious safety issue. When we identify a cracked heat exchanger, the furnace should be shut down until repair or replacement. Heat exchanger replacement on aging equipment rarely pencils economically vs. furnace replacement. Every Omaha home with gas-fired equipment should have functioning CO detectors as the primary safety backstop regardless of equipment condition.

How long should a furnace last in Omaha?

Typical service life depends on equipment tier and maintenance discipline. Standard-efficiency (80% AFUE atmospheric) furnaces: 15-20 years with proper maintenance, 12-15 years neglected. Mid-tier (95% AFUE condensing single-stage): 18-22 years maintained, 13-17 years neglected. Premium-tier (97-98% AFUE modulating with ECM blower): 20-25 years maintained, 15-18 years neglected. Omaha's heating-dominant climate puts more accumulated runtime on furnaces than on AC equipment. Equipment receiving consistent annual professional maintenance typically reaches the upper end of expected service life ranges.

Do you work on all furnace brands?

Yes, all major residential furnace manufacturers: Carrier, Bryant, Trane, American Standard, Lennox, Goodman, Daikin/Amana, York, Coleman, Rheem/Ruud, Heil, Tempstar, and the various OEM-rebranded equivalents. We also service older equipment from manufacturers that have been consolidated or rebranded over the years. Repair parts availability is broadly good across mainstream brands for equipment up to 20 years old; equipment older than that occasionally has parts availability issues that affect the repair-vs-replace decision.

Furnace Repair in Omaha, Nebraska — Omaha Heating and Air Conditioning

Furnace repair is our highest-volume service category in Omaha because the city’s heating-dominant climate (6,300 annual heating degree days vs. 1,200 cooling degree days, roughly 5:1 ratio) puts substantially more accumulated runtime on heating equipment than cooling. The ASHRAE 99% winter design temperature is -4°F, with documented historical extremes like the January 2019 polar vortex week when midtown Omaha reached -22°F. Equipment running through that kind of cold accumulates stress on combustion components, ignition systems, blower motors, control boards, and the heat exchanger itself. No-heat calls cluster during specific seasonal patterns: the first hard freeze of late October or November, deep cold weeks of January and February, polar vortex events that overwhelm marginal equipment. This page covers the furnace repair work we perform in Omaha, the failure patterns common to the local climate and combustion equipment, safety considerations around carbon monoxide and gas pressure, and pricing for typical repair scenarios. For deeper coverage of furnace repair work generally, see the main furnace repair page.

Common Furnace Failures in Omaha

Hot Surface Igniter Failure

The most common single furnace repair we perform. Modern furnaces (post-1990) use hot surface igniters (HSI) made of silicon carbide or silicon nitride to ignite the gas burner. The igniter heats to over 2,000°F to initiate combustion, then cools between cycles. Thermal cycling stress eventually causes the igniter to crack and fail. Typical service life: 3-7 years depending on cycling frequency. Failure symptoms: furnace won’t start (no ignition), error codes related to ignition, sometimes audible clicking from the ignition control board without ignition. Replacement: $185-$385 installed, often resolved during the same visit because we carry common igniters on technician trucks.

Flame Sensor Fouling

The flame sensor is a metal rod that detects the presence of flame after ignition, allowing the gas valve to stay open. Over service life, the sensor accumulates oxidation that reduces its sensitivity. Symptoms: furnace starts but shuts off after 30-90 seconds (the sensor doesn’t recognize the flame and the safety system shuts off the gas). Service: sensor cleaning with fine emery paper or steel wool, $145-$245 typical visit charge. Some sensors eventually need replacement when cleaning no longer restores function.

Pressure Switch Issues

Modern condensing furnaces use pressure switches to verify proper draft and combustion airflow before the ignition cycle proceeds. Pressure switch failures or stuck switches prevent ignition entirely. Common causes: condensate accumulation in pressure switch tubing, switch contamination from combustion residue, switch contact degradation. Service work: pressure switch replacement or condensate line clearing, $185-$385 typical.

Control Board Failure

The control board is the furnace’s electronic brain coordinating ignition sequence, blower operation, safety controls, and diagnostic functions. Control board failures range from intermittent (sometimes works, sometimes doesn’t) to complete (furnace dead). Causes: capacitor aging on the board (typical 10-15 year service life), power surge damage, water damage in some basement installations. Replacement: $385-$785 depending on furnace tier and control complexity. Premium-tier communicating equipment has higher control board cost.

Blower Motor Failure

The blower motor moves air through the system. Failure modes: PSC motor capacitor failure (won’t start), ECM motor module failure (electronics failure while motor itself is fine), bearing failure (audible whining progressing to seizure), winding failure (complete motor death). Capacitor replacement: $185-$285. ECM module replacement: $385-$685. Full motor replacement: $385-$685 PSC, $685-$1,485 ECM. See the air handler services page for detailed coverage.

Heat Exchanger Cracks

The most serious furnace failure mode because cracked heat exchangers can leak carbon monoxide into the supply airstream. Symptoms: visible cracking during borescope inspection, elevated CO readings during combustion analysis, sometimes physical signs (rust, scorch marks, distorted metal). Heat exchanger replacement on aging equipment usually pencils toward furnace replacement rather than component repair because the labor cost is substantial and other components are typically aging in parallel. New furnace warranties often cover heat exchanger replacement for 10-20 years, making warranty status important to verify.

Gas Valve Failure

The gas valve controls fuel flow to the burner based on signals from the ignition control. Failure modes: valve stuck closed (no gas flow despite ignition signal), valve stuck open (gas continues flowing despite shutdown signal — serious safety issue with safety controls catching the situation), inlet pressure issues. Replacement: $385-$785 typically.

Draft Inducer Motor Failure

The draft inducer (a small fan that establishes proper draft before main blower operation) is critical to safe combustion. Failure prevents ignition sequence from proceeding. Symptoms: furnace clicks but doesn’t ignite, pressure switch error codes, sometimes audible motor failure (whining, grinding). Replacement: $485-$885.

Carbon Monoxide Safety

Furnace repair work always considers carbon monoxide safety. Specific considerations:

Combustion analysis — every furnace repair visit includes combustion analyzer readings: CO production (target under 100 ppm air-free), O2 percentage, stack temperature, draft pressure, combustion efficiency. Elevated CO indicates either a combustion problem (poor air/fuel mixture, restricted combustion air, dirty burner) or heat exchanger leak (combustion gases entering supply airstream).
CO detector recommendations — every Omaha home with gas-fired equipment should have functioning CO detectors. UL 2034-listed detectors with appropriate alarm thresholds. Replace CO detectors per manufacturer specification (typically 5-10 year sensor life).
MUD gas emergency — for suspected gas leaks, call MUD 402-554-7777 before HVAC service. For CO detector alarms, evacuate and call 911 from outside the home before calling us.
Heat exchanger inspection — visible and borescope inspection during repair visits identifies developing heat exchanger issues before they become CO emergencies.

No-Heat Emergency Response in Omaha

No-heat calls during winter receive priority dispatch, especially when:

Outdoor temperature is below 35°F — risk of frozen pipes increases substantially. Pipes in exterior walls or unheated spaces can freeze within hours during sustained sub-freezing temperatures.
Vulnerable household members — infants, elderly, anyone with health conditions face exposure risk during sustained no-heat conditions.
Polar vortex or extreme cold events — like the January 2019 -22°F week, demand surges substantially with marginal equipment failing across the metro. Dispatch times extend beyond normal, but vulnerable household priority dispatch continues.

Typical no-heat dispatch times: 2-6 hours during business hours under normal conditions, 4-12 hours after-hours under normal conditions. During polar vortex events or sustained cold demand surges, dispatch times can extend to 24-36 hours for non-vulnerable households (worst case observed during January 2019 was 36 hours at peak demand for non-vulnerable households). We’re transparent with customers during demand surges about realistic dispatch timing.

MUD Gas Pressure Considerations

Metropolitan Utilities District (MUD) provides natural gas service throughout Omaha. Specific considerations for furnace repair work:

Residential service pressure — 7″ WC nominal at the residential meter, 14″ WC maximum. Furnace gas valve inlet pressure should match this range; out-of-spec inlet pressure produces combustion problems.
Manifold pressure — gas pressure at the gas valve outlet (manifold) should match furnace manufacturer specification, typically 3.5″ WC for natural gas at high-fire. Manifold pressure verification is part of every repair visit involving gas valve or combustion components.
Gas piping issues — older Omaha homes sometimes have undersized gas piping that limits delivery to modern higher-Btu furnaces. Gas piping replacement or upgrades may be needed for premium-tier furnace installations.
MUD gas emergency line — 402-554-7777, available 24/7 for suspected gas leak emergencies.

Pricing for Furnace Repair in Omaha

Diagnostic visit (business hours): $125–$185.
Diagnostic visit (after-hours emergency): $125–$185 base plus after-hours dispatch fee $145–$245.
Hot surface igniter replacement: $185–$385.
Flame sensor cleaning: $145–$245.
Flame sensor replacement: $185–$285.
Pressure switch replacement: $185–$385.
Gas valve replacement: $385–$785.
Control board replacement: $385–$785 (standard tier), $785–$1,485 (premium communicating).
Draft inducer motor replacement: $485–$885.
Blower motor replacement (PSC): $385–$685.
Blower motor replacement (ECM): $685–$1,485.
Heat exchanger replacement — rarely pencils on aging equipment; typically shifts to furnace replacement evaluation.
Maintenance plan customers: diagnostic fees reduced or waived per plan tier, repair labor discount applied.

Repair vs. Replace Considerations

For Omaha furnace decisions:

Under 10 years old — almost always repair, especially with manufacturer parts warranty often still covering major components.
10-15 years old — case-by-case. Single component failure usually warrants repair; multiple aging components warrants evaluation.
15-20 years old — strong replacement consideration, especially for major component failures.
20+ years old — replacement almost always pencils better, particularly for atmospheric (80% AFUE) equipment that has substantial efficiency gap vs. current 95%+ AFUE condensing equipment.
Heat exchanger cracks — almost always replacement rather than heat exchanger repair, except on equipment with active warranty coverage.

The 40-50% rule applies: when a single repair approaches 40-50% of replacement cost, replacement typically pencils better. Federal tax credits (Section 25C, $600 cap for qualifying furnaces, $2,000 cap for qualifying heat pumps) reduce replacement net cost. See the HVAC replacement page.

Frequently Asked Questions

My furnace stopped working on a cold morning. What should I check first?: Several simple checks before calling: thermostat set to “heat” mode and setpoint above current room temperature (verify mode is correct, replace batteries if display is dim), filter not severely loaded (replace if needed; severely loaded filters can cause furnaces to shut down on high-limit safety), furnace power switch near the unit is on, circuit breaker hasn’t tripped, gas valve at the furnace shutoff is on. If basic checks don’t resolve the issue, call us at (402) 258-6703. While waiting for dispatch in winter: open cabinet doors below sinks on exterior walls (prevents pipe freeze), let faucets drip slightly on exterior-wall faucets, layer up in warm clothing, close off unused rooms to concentrate any remaining heat in occupied areas. Use portable electric space heaters cautiously; never use unvented combustion appliances indoors.
How quickly do you respond to no-heat calls in winter?: Depends on time of day, outdoor temperature, household vulnerability, and weather conditions. Normal-conditions business hours: typically 2-6 hours. Normal-conditions after-hours: typically 4-12 hours. Vulnerable households (infants, elderly, anyone with health conditions) receive priority dispatch regardless of conditions. During polar vortex events or sustained cold demand surges (like January 2019’s -22°F week), demand surges across the metro and dispatch times extend substantially — worst case observed was 36 hours at peak demand for non-vulnerable households. We’re transparent with customers during demand surges about expected timing. Maintenance plan customers receive priority dispatch per contract tier.
What does a cracked heat exchanger mean and is it dangerous?: The heat exchanger is the metal component that transfers heat from combustion gases to the air being circulated through your home. A cracked heat exchanger can allow combustion gases (including carbon monoxide) to mix with the supply air being delivered to your living space. This is a serious safety issue. Symptoms: elevated CO readings during combustion analysis, visible cracking during borescope inspection, sometimes rust, scorching, or distortion on the heat exchanger surface. When we identify a cracked heat exchanger, the furnace should be shut down until repair or replacement. Heat exchanger replacement on aging equipment rarely pencils economically vs. furnace replacement; equipment with active manufacturer warranty on the heat exchanger may have parts coverage but not labor. Every Omaha home with gas-fired equipment should have functioning CO detectors as the primary safety backstop regardless of equipment condition.
How long should a furnace last in Omaha?: Typical service life depends on equipment tier and maintenance discipline. Standard-efficiency (80% AFUE atmospheric) furnaces: 15-20 years with proper maintenance, 12-15 years with neglected maintenance. Mid-tier (95% AFUE condensing single-stage): 18-22 years with maintenance, 13-17 years neglected. Premium-tier (97-98% AFUE modulating with ECM blower): 20-25 years with maintenance, 15-18 years neglected. Omaha’s heating-dominant climate (6,300 HDD vs 1,200 CDD) puts more accumulated runtime on furnaces than on AC equipment, so furnace service life decisions matter more than typical for whole-life HVAC economics. Equipment receiving consistent annual professional maintenance typically reaches the upper end of expected service life ranges; equipment maintained reactively typically reaches end-of-useful-life earlier.
Do you work on all furnace brands?: Yes, all major residential furnace manufacturers: Carrier, Bryant, Trane, American Standard, Lennox, Goodman, Daikin/Amana, York, Coleman, Rheem/Ruud, Heil, Tempstar, and the various OEM-rebranded equivalents. We also service older equipment from manufacturers that have been consolidated or rebranded over the years (vintage Carrier-Bryant, Janitrol, ICP variants, etc.). Specific brands with proprietary diagnostic tools or factory-authorized service requirements sometimes need manufacturer coordination; we navigate manufacturer relationships when needed. Repair parts availability is broadly good across mainstream brands for equipment up to 20 years old; equipment older than that occasionally has parts availability issues that affect the repair-vs-replace decision.

Contact Omaha Heating and Air Conditioning

For Omaha furnace repair, no-heat emergency dispatch, or diagnostic visit consultation, call our 24/7 line. Winter dispatch follows priority for vulnerable households regardless of demand conditions.

Emergency Line (24/7): (402) 258-6703
MUD Gas Emergency: 402-554-7777 (for suspected gas leaks — call before calling us)
911: for CO detector alarms or any fire/smoke situation — call before calling us
Address: Lake Regency Building, 450 Regency Pkwy #370, Omaha, NE 68114
Email: info@omahaheatingairconditioning.xyz
City of Omaha Mechanical Contractor License: #MC-2014-08847
EPA Section 608 Universal: #608U-2014-227841

Furnace Repair Omaha NE | No-Heat, Igniter, Combustion