NATE & EPA Certified Technicians

No Heat Tonight in Greeley? McCormick Answers.

Safety first: if you smell gas or the carbon monoxide alarm just went off, leave the house now. Call from outside.

Your furnace is down and the house is getting colder. One call fixes that: a real person answers, a NATE-certified McCormick technician is dispatched, and the visit ends with your heat restored or your system made safe.

You don't need to know what's wrong. If your home has no heat, it qualifies.

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NATE - Certified

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How Fast Can McCormick Reach You?

McCormick technicians are dispatched from Greeley, so help is never coming from across the state.

Emergency heating repair near you starts in Greeley, not in a call center three states away. Our trucks leave from our shop at 2881 S 31st Ave #3. That's real miles from your house, and our team knows every one of them.

The big national companies take your call, then look for someone to send. We skip that step. The person who answers your call works with the person who drives to your door.

What Happens When You Call?

Emergency heating service from McCormick takes only three steps:

After hours emergency

Step 1

Call (720) 217-4801 — say "no heat" and give your address.

Refrigerant Leak Detection & Recharge_

Step 2

We triage on the phone — we ask what the furnace is doing, what you smell, and what the thermostat reads, then tell you whether to shut the system down before we arrive.

Priority scheduling & member repair discount_

Step 3

A NATE-certified technician is dispatched and restores heat, or makes the system safe, on that visit.

The technician is moving while you're still on the line. The clock starts at "hello," not at the knock on the door. No forms, no account, no phone tree at midnight with cold hands.

Prefer to start in writing? Book an emergency service request. But when the house is losing heat, the phone is faster.

What Are the Signs You Need Furnace Repair?

A furnace emergency is any of six situations: total heat loss in freezing weather, a carbon monoxide alarm, a gas smell, a furnace that runs while the house keeps getting colder, visible fire damage at the unit, and a system stuck in lockout. If tonight matches one, call now rather than waiting for morning:

Heat pumps & boilers

Sign #1

No heat at all in freezing weather. The clearest emergency there is. Once the indoor temperature falls far enough, your water supply lines are at risk too.

Heat Pumps & Dual-Fuel Systems

Sign #2

A carbon monoxide alarm. Leave the house first, call from outside. Never wait-and-see. More on this below.

Electrical_

Sign #3

A gas smell near the furnace. Same rule: out first, call from outside. Don't flip switches or stay inside to open windows.

Furnace repair in Greeley

Sign #4

The furnace runs but the house keeps getting colder. Something between the burner and your rooms has failed. Running it harder won't fix it.

Gas smell or carbon monoxide alarm_

Sign #5

Scorching, soot, or a burning-plastic smell at the unit. Shut the system down and call. A brief dusty smell at the first heat of the season is normal; melting plastic is not.

Service Area

Sign #6

A lockout that won't reset. The furnace is protecting itself from a fault. Resetting it again doesn't fix the fault.

If your situation isn't on this list, perhaps the furnace is short-cycling, making a new noise, or heating unevenly, a standard furnace repair appointment is the right call. Same technicians, same standard of work, no midnight wake-up.

Still genuinely unsure? Call anyway. Sorting that out is what our phone triage is for.

Is a Carbon Monoxide Alarm a Furnace Emergency?

Yes. A carbon monoxide alarm is a furnace emergency until a technician confirms otherwise. Get everyone out of the house first, then call from outside.

Carbon monoxide is colorless and odorless. The alarm is the only warning you get, and your heating system is one of the most common residential sources. A cracked heat exchanger or blocked vent can push combustion gases into your living space while the furnace sounds normal and keeps making heat.

This is not something a reset button resolves, or fresh detector batteries make safe, or something to sleep on with the windows cracked.

A McCormick technician will test the system, find the source, and won't hand the furnace back until it's safe to run. If it can't be made safe that night, we shut it down and tell you exactly what happens next. A cold house is recoverable; the alternative is not.

If anyone in the home feels dizzy, nauseated, or confused, call 911 first. Call us once everyone is safe.

house hold boiler

What Should You Do Before the Technician Arrives?

Before your emergency furnace repair visit, check three things: the thermostat is set to Heat and above room temperature, the furnace's power switch is on, and the breaker hasn't tripped.

That furnace switch looks exactly like a light switch, sits near the unit, and gets bumped off more often than anyone admits. If either check brings the heat back, cancel the visit with a clear conscience. If not, you've saved the technician diagnostic time.

Then slow the heat loss:

Keep exterior doors closed and limit trips in and out.

Close off unused rooms so warmth stays where the people are.

Open cabinet doors under sinks on exterior walls so room air reaches the supply lines.

Space heaters: hard level surface, three feet from anything flammable, plugged straight into the wall, never an extension cord.

Two things not to do. Don't keep resetting a locked-out furnace to squeeze out another cycle (that's how a fixable problem becomes a serious one). And don't run a gas oven with the door open for heat; it was never designed for that.

If your emergency is a gas smell or a CO alarm, be outside when you call.

How to Get Emergency Heating Service — Three Steps

Emergency heating service from McCormick takes only three steps:

After hours emergency

Step 1

Call (720) 217-4801 — say "no heat" and give your address.

Refrigerant Leak Detection & Recharge_

Step 2

We triage on the phone — we ask what the furnace is doing, what you smell, and what the thermostat reads, then tell you whether to shut the system down before we arrive.

Priority scheduling & member repair discount_

Step 3

A NATE-certified technician is dispatched and restores heat, or makes the system safe, on that visit.

That's the whole process. No forms to print, no account to create, no phone tree to navigate at midnight with cold hands.

Why Choose McCormick for Emergency Furnace Repair in Greeley?

Emergency furnace repair in Greeley is what McCormick Heating & Cooling was built around: residential heating, done by people who live where you do and answer when you call.

Owner Jesse Trout, Colorado native and HVAC expert, runs a team of NATE & EPA Certified technicians backed by 800+ reviews on Google. Every job carries our Satisfaction Guaranteed commitment, and that guarantee doesn't pause after dark.

The certifications matter most on an emergency call. NATE is the heating trade's independent, exam-verified standard. The person diagnosing your furnace at midnight has proven they know how it works, not just how to swap parts. EPA certification governs safe refrigerant handling across our HVAC work.

We service every major furnace brand, and as an Armstrong Air dealer we know current residential equipment from the inside out. We're also residential on purpose: no commercial division, no side businesses. The technician at your door has spent their career on systems like yours, in this exact climate.

Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I submitted a claim through First American Home warranty and they assigned McCormick to take a look at my fire alarm. They called as soon as they opened and set up an appointment with Jake Hernandez to come out today! He was quick to diagnose problem and replaced the malfunctioning alarm. Thank you Jake for your exceptional service! Update 4-2-26 Josiah and Brian came out to tuneup and clean the A/C. They were friendly and professional explaining what was happening during the service. Thank you!!!
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Marcia Jackson profile picture
Marcia Jackson
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Always a pleasure to have McCormick Heating & Cooling over to keep my HVAC system up and Running. Justin and Josiah were professional, punctual, and explained some basic maintenance I should keep my eyes on. 10/10 would recommend Justin and McCormick Heating & Cooling to anyone needing such services.
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Nick Minar profile picture
Nick Minar
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Angelo was a fantastic tech, his other coworkers were just as great, they took care of us 100% and left my furnace room better than they found it, very happy…Thank you McCormick Heating and Cooling!
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derrek majors profile picture
derrek majors
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Angelo was very good at his job, went above what was necessary to make sure everything was installed correctly and will remain safe for us for the future. Cleaned up everything and looks better than before he arrived. Thank you
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Yvonne Majors profile picture
Yvonne Majors
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Wow! What a great experience. Justin was so cheery and fast. He got everything fixed and even changed out the filter. Thanks a bunch
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Kara Tuzinovic profile picture
Kara Tuzinovic
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David and Jason replaced my H Vac system. They were so very knowledgeable and kind. They explained how to use and perform maintenance on my new system. I was extremely pleased how they showed care for my home. Thank you gentlemen I truly appreciate you both. I would recommend McCormick to anyone needing work with their H Vac system.
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Cathy Miller profile picture
Cathy Miller
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I’ve been using McCormick for 7 years now- they are very skilled at working on my non-traditional HVAC mini split system and have consistently saved me money over other companies. Josiah was able to diagnose and fix my heat issue on the spot! Thanks McCormick!
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Kimberly Lammertin profile picture
Kimberly Lammertin
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Justin and the team at McCormick Heating & Cooling were excellent. They took the time to thoroughly diagnose issues with my boiler, test multiple valves, and walk through the system carefully to identify the most cost-effective solution rather than just recommending unnecessary replacements. Their approach was thoughtful, transparent, and very professional. Justin in particular was fantastic—knowledgeable, patient, and clearly experienced. He explained what he was doing at each step and made sure everything was working properly before finishing the job. In the end they replaced the necessary components and got the entire system running perfectly. It’s rare to find a company that is this honest, responsive, and detail-oriented. Highly recommend McCormick Heating & Cooling if you want quality work and technicians who genuinely care about doing the job right.
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Alexander Whiteman profile picture
Alexander Whiteman
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Quick service. In and out quick. Couldn’t expect anything better.
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Gavin Torres profile picture
Gavin Torres
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My entire experience was smooth, informative and successful! Angelo and David installed the new furnace. They were efficient and patient with all my questions. And they were knowledgable and friendly! Highly recommended for your HVAC needs! Thank you Mcormick!
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Isa Segismundo
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Where McCormick Answers Emergency Heating Calls

Emergency heating service from McCormick covers Northern Colorado from our home base in Greeley, with technicians answering no-heat calls in Loveland, Longmont, and Fort Collins.

Cooling emergency instead? Our emergency HVAC service page covers air conditioning failures the same way this page covers heat. For everything your furnace needs when it isn't an emergency, start with our heating services hub.

Get Your Heat Back Tonight — Call (720) 217-4801

One call is the entire process. Say "no heat," give us your address, and a NATE-certified McCormick technician takes it from there. Dispatched tonight, not added to tomorrow's schedule. You don't need to diagnose anything or decide whether it's "bad enough." If your home has no heat, it qualifies. Call now.

McCormick Heating & Cooling · 2881 S 31st Ave #3, Greeley, CO 80631, United States · Mon–Fri 8am–5pm

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