Case Study: Weekend Emergency Heat Call During January Cold Snap, Ralston 72nd Street Area
This case study documents a weekend emergency heat call in Ralston during the January 2025 cold snap when outdoor temperatures reached -18°F. The customer experienced complete furnace failure Saturday evening when an 18-year-old furnace’s heat exchanger cracked, producing CO alarm activation that triggered the family’s emergency response. Same-day Saturday replacement completed before the deepest overnight cold, illustrating weekend emergency response capability during peak winter demand conditions.
Customer Situation
The property is a 1996 ranch home in the residential area east of 72nd Street in Ralston, 1,750 sq ft on a 7,500 sq ft lot. The customers (family of four with parents in their early 40s and two children ages 9 and 12) had purchased the home 6 years earlier. Equipment situation: 2007 Goodman GMP080-3 atmospheric furnace, 18 years old (purchased by previous owner, installed by previous contractor); 2018 Carrier 16 SEER R-410A AC, 7 years old, operating well.
Emergency situation Saturday 6:42pm:
- Outdoor temperature: -8°F at time of call, falling toward -18°F overnight forecast
- CO detector alarm activation in main hallway near furnace
- Family followed CO detector instructions: evacuated to neighbor’s home, called emergency line
- Furnace had been heating normally throughout the day until alarm activation
- Family includes two children, requiring rapid resolution for safe overnight shelter
Emergency Dispatch Coordination
Vulnerable household protocol with weekend emergency dispatch activated immediately. Diana Holcomb coordinated dispatch despite being off-duty (weekend on-call coverage).
Initial response timeline:
- 6:42pm Saturday — Emergency call received from neighbor’s home (customer family evacuated per CO detector protocol)
- 6:45pm — Dispatch confirmed; technician en route
- 6:50pm — Customer guided to safety verification: confirm everyone out of home, do not re-enter, MUD Gas line called (402-554-7777) for gas shut-off coordination, do not attempt to operate furnace
- 7:15pm — Technician arrives, Mark Tran (Cold-Climate Tech, 5 years, ex-Minneapolis cold-weather emergency experience)
- 7:20pm — Mark performs CO testing in home to verify safe entry; CO levels still elevated; ventilation and gas shut-off priority
Initial Assessment and Safety Resolution
Safety first protocol:
- Gas service shut off at meter (MUD coordination)
- Home ventilation: opened windows briefly to reduce CO levels (despite cold weather, ventilation priority over heat preservation)
- CO detector testing throughout home to identify any other locations with elevated readings
- Family informed they could re-enter for brief equipment authorization discussion but should not stay in home until heating safely restored
Furnace Diagnostic
- 2007 Goodman GMP080-3 atmospheric furnace, 18 years old
- Visible heat exchanger crack: confirmed by visual inspection through inducer access port
- Crack location: primary heat exchanger, approximately 2.5 inches in length
- This was the source of CO leakage into supply air, which triggered detector alarm
- Equipment must be shut down permanently; replacement is the only safe remediation
Same-Day Emergency Replacement
Given vulnerable household status, weekend emergency, and extreme cold weather, same-day replacement prioritized:
- 7:45pm — Customer authorization received for replacement; warehouse-on-call coordinator notified for equipment retrieval
- 8:30pm — Warehouse coordinator delivered Lennox ML195 furnace and chimney liner kit to property
- 9:00pm — Old furnace removal began (atmospheric furnace removal at evening hours with focus on completion rather than typical daytime pace)
- 10:30pm — Sidewall venting penetration through basement window header; chimney liner installation for orphaned water heater
- 11:45pm — New furnace positioned and connected to gas, electrical, and ductwork
- 12:30am Sunday — System startup and commissioning; combustion analysis verification (5 ppm CO with new condensing equipment); customer walkthrough
- 1:15am Sunday — Installation complete; family returned to home; indoor temperature recovery beginning
Customer Care During Emergency
Family of four with children during extreme cold requires substantial coordination:
- Family stayed at neighbor’s home during evening installation phase
- Regular updates provided every 60-90 minutes during installation
- Children’s needs accommodated: family could return briefly for additional clothing/supplies
- Mark Tran coordinated with family throughout installation regarding progress and estimated completion
- Home reached habitable temperature by approximately 3:00am after installation completion
- Family encouraged to use space heaters in bedrooms during overnight recovery period
Results
- Same-day weekend resolution — emergency situation resolved within 7 hours of initial call despite weekend timing
- Safety hazard eliminated — cracked equipment removed; CO leakage source eliminated; new equipment with combustion analysis verification
- Vulnerable household protected — family with children safely sheltered during installation period; home back to safe operation by morning
- Heating efficiency improvement — 95% AFUE vs prior 80% AFUE produces estimated 16% gas consumption reduction
- Right-sized equipment — 70K Btu/hr matched to actual heating load vs prior 80K Btu/hr
- Federal Section 25C tax credit — $600 (30% × $600 max furnace)
- Customer relationship — substantial appreciation for weekend emergency response; family enrolled in Premium maintenance plan after installation
Pricing
Total project cost: $8,200
- Lennox ML195 condensing furnace (70K Btu, right-sized): $4,000
- Chimney liner installation: $1,485
- Sidewall venting penetration: $245
- Condensate pump: $215
- Standard programmable thermostat: $125
- Weekend emergency dispatch and labor (6.5 hours, evening/overnight): $1,485
- Warehouse coordinator after-hours equipment delivery: $385
- Materials and supplies: $185
- Modest weekend evening premium: $75 (reduced from standard $200+ emergency surcharge given vulnerable household status)
Net cost after federal tax credit:
- Project cost: $8,200
- Federal Section 25C tax credit: -$600
- Net cost: $7,600
CO Detector Action Validation
The family’s CO detector activation prevented potentially catastrophic outcomes:
- Cracked heat exchanger was actively leaking CO into supply air
- Without CO detector, family would have continued occupying home with rising CO exposure throughout the night
- Overnight CO exposure with windows closed during cold weather could have produced serious health consequences or fatalities
- CO detector with proper protocol response: alarm activation, immediate evacuation, emergency call
- This emergency illustrates why CO detectors should be installed on every level of the home (NFPA recommendation) and tested monthly
Lessons from This Project
- Aging atmospheric furnaces (18+ years) can develop heat exchanger cracks creating CO hazards even when equipment otherwise appears functional
- CO detectors are essential safety equipment; proper protocol response (alarm, evacuate, call) prevented potential household harm
- Weekend emergency dispatch capability is essential for HVAC contractors serving residential customers
- Vulnerable household priority (families with children, elderly, disabled) appropriately supersedes standard demand surge delays
- Same-day replacement during extreme weekend cold weather is possible when equipment is in stock and customer authorization can proceed quickly
- Modest emergency premium is appropriate for after-hours work; not full standard emergency surcharge for vulnerable household
Contact Omaha Heating and Air Conditioning
For Ralston weekend emergency heat service, CO detector alarm response, same-day furnace replacement, or vulnerable household emergency dispatch, call our 24/7 line.
- Emergency Line (24/7): (402) 258-6703
- MUD Gas Emergency: 402-554-7777 (suspected gas leaks)
- 911: for CO detector alarms or fire/smoke situations
- 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