What Should Denver Homeowners Do When Heat or AC Fails?

When your furnace quits in a Colorado cold snap or your AC dies on a 95°F Denver summer afternoon, knowing immediate steps and when to call a professional can protect your comfort, safety, and home systems. Expert insights for quick action and future prep.
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Climate Control

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Indoor Air Quality

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Odor Removal & Allergy Care

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System Repairs

Why an HVAC Emergency Can Be More Than an Inconvenience

Denver’s high-altitude climate can swing from sub-zero winter nights to blistering summer afternoons within weeks—or even hours. That level of stress pushes furnaces and air conditioners to their limits, and when they fail, it’s not just uncomfortable: it can be unsafe (risking freezing pipes or heat exhaustion). HVAC Laboratory

For both residential and light commercial properties, taking calm, structured steps makes a world of difference in outcomes—whether you’re waiting for professional help or taking safety actions immediately.


Immediate Steps When Your HVAC Fails in Extreme Weather

In any emergency scenario, the first priority is safe conditions for occupants before anything else.

Cut Power Safely
If the system is making unusual sounds, sparking, or smelling of burning, switch off the unit at the furnace/cooler and the breaker panel. Flipping the breaker cuts electrical feed and can prevent further damage or fire risk.

Check Thermostat & Breakers
Sometimes the issue isn’t the system itself. A mis-set thermostat, a dead thermostat battery, or a tripped breaker can mimic total failure. Reset the breaker (only once), check the thermostat settings, and see if the system resets.

Protect Against Secondary Damage
In winter, open cabinet doors around furnaces to let residual heat warm nearby plumbing; drape faucets with warm cloths if freezing is imminent. In summer, close blinds to reduce heat gain, use fans, and hydrate occupants.

Also Read 👉🏼Is Your HVAC System Properly Winterized for Colorado’s Climate| Teamwork HVAC


When to Call a Pro—Now, Not Later

a boiler repair technician inspecting a boiler valve and have plyer in his hand.

Certain signs should trigger immediate professional intervention:

• The system won’t restart at all despite breakers and thermostat checks
• There’s a burning smell, smoke, or visible electrical issues
• Pipes are at risk of freezing or already making pressure sounds
• You’re in extreme heat without any cooling and vulnerable occupants are present
• You observe refrigerant leaks or oil stains near outdoor units

For Denver homeowners and businesses, you can reach Teamworks Mechanical LLC any time extreme weather pushes systems past their limits. The Teamworks crews bring decades of local experience across residential and commercial HVAC repair, maintenance, and system diagnostics. teamworkhvac.com

Contact CTA:
Call (720) 447-3157 or text (720) 292-7961 for emergency service in Adams, Arapahoe, Broomfield, Denver, Douglas, and Jefferson counties. teamworkhvac.com


Short-Term Backup Options That Work Without Compromising Safety

If waiting for a service call:

Heat isn’t Working? Layer up, use safe space heaters, and insulate windows/doors. Avoid portable kerosene or unvented combustion heaters indoors.

AC is Out? Set up fans near windows to create airflow, close east/west exposures, and evaporative coolers can provide relief without electrical overload.

Never use ovens or stovetops to heat large spaces—it’s an unsafe shortcut and a carbon monoxide risk.

Also Read 👉🏼Why Does Regular Preventive HVAC Maintenance Save You Money Long-Term?


Preventing the Next Emergency

Your best defense against extreme failures is prevention.

Schedule seasonal HVAC tune-ups: Systems get inspected, belts tightened, airflow checked, and weak parts replaced before they fail.

Replace old filters monthly in peak seasons: Restricted airflow overworks compressors and burners.

Consider an HVAC maintenance plan: Professionals can catch creeping electrical issues or signs of heat exchanger cracks months before they become emergencies.

Install a smart thermostat: These devices offer early warnings for out-of-range performance and help you manage load when weather spikes.


FAQs

  1. What counts as an HVAC emergency?
    A complete loss of heat in winter or cooling in summer with risk to occupants or property.

  2. Can I reset my HVAC system safely?
    Yes—turn off, wait 60 seconds, restore power. If it still fails, call a technician.

  3. How long can I wait before calling a professional?
    In extreme temperatures, don’t wait more than a few hours; systems can worsen rapidly.

  4. Why did my HVAC stop working in mild weather?
    Often filters, thermostats, or tripped breakers—not always major system failure.

  5. Will regular service prevent emergencies?
    A well-maintained system fails far less often under stress.

  6. Can I use a portable heater safely?
    Only if it’s properly vented and certified for indoor use.

  7. Why does high altitude affect HVAC performance?
    Thin air changes heat transfer efficiency, stressing equipment more than in lower-elevation climates.

  8. Does Teamworks offer 24/7 emergency service?
    Yes—the Teamworks Advantage includes prompt responses during extreme heat and cold spells. teamworkhvac.com

  9. What’s the first thing I should check if my AC dies?
    Thermostat setting, breaker panel, and outdoor unit airflow.

  10. Is preventive maintenance worth the investment?
    Strong maintenance plans reduce breakdown risk and prolong system life.


Protect Your Investment

At any point along the way, talk with us about protecting your Metro Denver, Colorado heating or air conditioning systems with a Maintenance Service Contract. Preventative Maintenance is the best means of ensuring that, new or used, your system delivers you with:

Maximized Performance

Highest

Efficiency

Consistent Comfort

Reduced Downtime

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