Emergency AC Repair
Emergency AC repair in Denver: what counts as urgent, safe checks to try first, and same-day or next-day visits from our Wheat Ridge team.
When the air conditioning quits on a hot afternoon, you need a straight answer about when help can arrive. MoJo Home Services is open Monday through Saturday from 8am to 8pm, and we are closed on Sunday. We do not run an overnight service. During open hours, same-day or next-day appointments are often available, and a home with no cooling at all gets fitted in as soon as the schedule allows. This page explains when to treat a breakdown as emergency AC repair, what you can safely check yourself, and how to keep the house bearable until a technician gets there.
What Counts as a Cooling Emergency
Treat it as urgent when:
The house has no cooling during a heat wave and someone inside is an infant, an older adult, pregnant, or living with a medical condition that heat makes worse.
You smell burning or hot plastic from the vents or the outdoor unit, or see smoke.
The breaker trips again right after you reset it.
Water is coming through a ceiling or spreading across the floor from the indoor unit.
The outdoor unit is grinding, banging or screeching, which can mean a failing motor or compressor.
A system that still cools but less than usual, a single warm room, or a new rattle should be booked promptly, but it can usually wait for a regular appointment.
Safe Checks Before the Technician Arrives
These take a few minutes and sometimes solve the problem outright. Stay out of the inside of the outdoor unit; it holds high voltage even when the fan is still.
Thermostat: confirm it is set to cool, the setpoint is below the room temperature, and the display is on. Replace the batteries if the screen is blank.
Breaker: find the air conditioner and furnace breakers in the panel. If one is tripped, reset it once. If it trips again, leave it off and call, because repeated trips point to an electrical fault.
Filter: a filter packed with dust starves the coil of air and can shut the system down. Swap it if it looks gray and matted.
Ice on the lines: if the copper line at the outdoor unit or the indoor coil is frosted or iced, turn cooling off at the thermostat and set the fan to on. That melts the ice faster, and running a frozen system can ruin the compressor.
Water near the indoor unit: many systems have a float switch that shuts cooling off when the drain backs up. Turn the system off and mop up; the drain line needs clearing.
Outdoor unit: clear away leaves, cottonwood fluff and anything leaning against the coil. Do not spray it while the power is on.
If you smell burning or see smoke, turn the system off at the thermostat and at the breaker. If there are flames or the smoke keeps coming, get everyone out and call 911.
Keeping the House Cooler While You Wait
Close the blinds on the south and west sides, run ceiling fans counterclockwise, and skip the oven and dryer during the hottest hours. Denver's dry air works in your favor after sunset: nights often cool off sharply, so opening windows in the evening and using a box fan to pull outside air through can bring the indoor temperature down well before morning. Basements stay cooler, which makes them a good place for kids and pets to sleep. If anyone at home is vulnerable to heat and the house keeps climbing, a few hours with a relative or at a public cooling center is the safest choice.
What Happens During an Emergency Air Conditioner Repair
The visit starts with the same diagnostics as any service call: thermostat signal, breaker and disconnect, capacitor and contactor, fan motor, refrigerant pressures and the condensate drain. Many sudden shutdowns trace back to a part that fits in one hand, and those can often be replaced on the spot once you approve the price. A failed compressor, a leaking coil or a burned-out blower motor may need parts ordered, and in that case the technician explains the timeline and anything that can restore partial cooling in the meantime. If the system is old enough that a large repair no longer makes sense, they will go over replacement options for an aging system so you can compare the two honestly.
When the AC Fails on a Sunday
We are closed on Sundays, and we would rather say so than promise a response we cannot make. If your air conditioning stops on a Sunday, run through the checks above, use the cooling steps to get through the night, and send us a request through the contact page with a short description of what is happening. Requests that arrive while we are closed are answered when the office reopens on Monday. During open hours you can reach us directly at (720) 807-4050.
Urgent Cooling Help Across the Metro
South and east of the city, the Aurora team works out of our East Hampden Avenue shop and covers Centennial and Parker. On the west side, the Wheat Ridge team handles calls in Arvada, Golden and the neighborhoods around them. In winter the same crews take on heating emergencies, from furnaces that will not light to boilers that keep losing pressure. MoJo is rated 5.0 on Google, and part of keeping that rating is telling people the truth about timing, including on a July afternoon when the schedule is already full.
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Help Center
Frequently Asked Questions: Emergency AC Repair in Denver, CO
Can I get help at night or on a Sunday?
Our hours are Monday through Saturday from 8am to 8pm. We are closed on Sunday and do not offer overnight visits. If your system fails outside those hours, try the safe checks on this page, keep the house as cool as you can, and send a request so you are on the list when we reopen.
How soon can a technician come out?
During open hours, same-day or next-day appointments are often available. In a long heat wave the schedule fills quickly, so calling early in the day gives you the widest choice of times. Homes with no cooling at all are fitted in as soon as the schedule allows.
Why did my AC freeze up, and what should I do?
Ice forms when the coil gets too cold, usually from a clogged filter, a weak blower or low refrigerant. Turn cooling off, set the fan to on, and let the ice melt completely, which can take several hours. Do not chip at the ice. Once it thaws, a technician needs to find the cause, or it will freeze again.
Is a refrigerant leak an emergency?
It is rarely a safety emergency in an open, ventilated home, but it will not fix itself. A system losing refrigerant cools less each day, may ice over, and can overheat the compressor. Handling refrigerant requires EPA certification, so a recharge is not a do-it-yourself job, and the leak should be found before any refrigerant is added.
What can I check before I call?
Look at the thermostat setting and batteries, the breaker, the filter and the outdoor unit, and watch for ice on the lines. Our troubleshooting guide for a stopped air conditioner walks through each step in more detail.
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