02/10/2025

7 Urgent Signs You Need Emergency Residential HVAC Repairs

Your HVAC system plays a crucial role in keeping your home comfortable year-round. But when it starts malfunctioning, waiting too long for repairs can lead to bigger issues—both for your comfort and your wallet. Recognizing the signs of an emergency can help you act fast and avoid costly breakdowns.

Here are seven clear indicators that you need emergency residential HVAC repairs right away.

1. No Airflow or Weak Air Circulation

If you turn on your HVAC system and notice little to no airflow coming from the vents, this could indicate a serious issue. Restricted airflow can be caused by a failing blower motor, clogged air filters, or blocked ductwork. When air circulation is compromised, your system will struggle to maintain the set temperature, leading to higher energy bills and uncomfortable indoor conditions.

What to Do:

If your HVAC system isn’t pushing out air effectively, it’s time to call Mannix Heating & Cooling for professional diagnostics and repairs.

2. Unusual Noises Coming from the System

A properly functioning HVAC system should operate quietly. If you hear loud or unusual sounds like banging, grinding, squealing, or hissing, this could be a sign of a serious mechanical problem. These noises may indicate loose components, motor issues, or refrigerant leaks. Ignoring these sounds can lead to costly repairs or even a full system replacement.

What to Do:

Turn off your HVAC system immediately and contact Mannix Heating & Cooling for an emergency inspection.

3. Sudden and Unexplained Spike in Energy Bills

An unexpected increase in your energy bills without a corresponding change in usage is a red flag. A malfunctioning HVAC system often works harder to maintain the desired temperature, consuming more energy in the process. This inefficiency may be due to faulty components, leaks, or a failing compressor.

What to Do:

If your energy bills are skyrocketing, schedule an inspection for residential HVAC repairs as soon as possible to prevent further inefficiency and expenses.

4. Strange or Unpleasant Odors

Your HVAC system should never emit foul or unusual smells. If you notice a burning odor, it could indicate electrical issues or overheating components. A musty smell may suggest mold or mildew growth in your ductwork, while a rotten egg odor could be a sign of a gas leak. All of these require immediate attention.

What to Do:

For burning or gas-like odors, turn off your system immediately and evacuate your home if necessary. Call Mannix Heating & Cooling for emergency service.

5. Frequent Cycling or Failure to Maintain Temperature

If your HVAC system is constantly turning on and off (short cycling) or struggling to reach the set temperature, it could be due to a malfunctioning thermostat, low refrigerant levels, or a failing compressor. A system that short cycles can overheat and cause major damage over time.

What to Do:

A professional technician from Mannix Heating & Cooling can diagnose the root cause and perform residential HVAC repairs to restore proper function.

6. Water Leaks or Excess Moisture Around the Unit

If you notice water pooling around your HVAC unit, it could be due to a clogged condensate drain, a refrigerant leak, or a failing component. Excess moisture can lead to mold growth, water damage, and reduced system efficiency. Refrigerant leaks are particularly dangerous, as they can pose health risks to your household.

What to Do:

Turn off your system and contact Mannix Heating & Cooling to assess the leak and provide immediate repairs.

7. HVAC System Won’t Turn On

The most alarming sign of all is when your HVAC system refuses to turn on. This could be caused by electrical issues, a broken thermostat, or a major system failure. Without immediate repairs, your home can quickly become uncomfortably hot or cold, depending on the season.

What to Do:

Check your thermostat settings and circuit breaker. If everything appears normal but the system still won’t start, call Mannix Heating & Cooling for fast and reliable emergency residential HVAC repairs.

Preventative Measures to Avoid Emergency HVAC Repairs

While emergencies can happen, routine maintenance can help reduce the risk of unexpected breakdowns. Here are some key steps to keep your system running efficiently:

Change Air Filters Regularly – Dirty filters restrict airflow and force your system to work harder. Replace them every 1-3 months.

Schedule Annual Maintenance – Professional tune-ups can catch small issues before they become costly repairs.

Monitor Energy Bills – Sudden spikes may indicate inefficiencies or system malfunctions.

Keep Vents and Ducts Clean – Blocked vents or dirty ducts can reduce airflow and strain your HVAC system.

Listen for Unusual Noises – Addressing minor sounds early can prevent major mechanical failures.

Call Mannix Heating & Cooling for Emergency Residential HVAC Repairs!

If you’ve noticed any of these warning signs, don’t wait until your system completely fails. Mannix Heating & Cooling provides emergency residential HVAC repairs to ensure your home stays comfortable and safe. Our expert technicians are ready to diagnose and fix your system quickly and efficiently.

Call now for immediate service!

Customer Reviews

Shondra J ones

They were lifesavers!!! My furnace went out and after three days of dealing with the home warranty company and the unscrupulous vendor they sent to my home, I called Mannix. The service technician was friendly, efficient but most of all honest. He found the problem after twenty minutes, saving me thousands in unnecessary replacement costs. It is refreshing to know that honest people still exist.

Lynne Wilson

I contacted Mannix from a referral of a friend who has benefitted from the excellent service this company provides. I found out a couple I know in Vienna had their heat pump stop working a few months ago and needed to be replaced. I called up the Mannix office later in the day on Monday 11/30/20 and provided information needed. I had a proposal in my email the next morning 12-01-20. This will enable me to discuss with my friends how they wish to proceed with fair financing options available too. This is EXCELLENT customer service and I would like Mr. Mannix to know that Sarah is an amazing professional face for his company. I plan to become a customer of theirs by signing up for the annual maintenance plan which is very reasonable priced. Sincerely, Lynne Wilson

Philip Slingerland

Been a happy Mannix customer for a few years now, but recently had them replace our aging HVAC system. The whole process was very painless, from Eric helping us decide which system was right for our home, to the efficient and professional installation by Billy and Matt. I am very pleased with the new system and very impressed with the level of service, communication, and detailed information I received from everyone involved. Highly recommend!

K.E.

Before dealing with Mannix I used two very well-known and “reputable” HVAC companies who did nothing but rip us off over the years. I was frustrated and found Mannix Heating & Cooling about 10 years ago. They installed a new HVAC system in my old home, and installed a water heater and various other items in my new home. They also have been doing yearly maintenance for years. Their employees are the most honest, reliable, and knowledgeable individuals in this industry. We recently had an issue with our HVAC system and they came out within a few hours on an emergency call. The technician was prompt, kind, professional, and very fair. He figured out what was wrong with our system quickly and remedied it immediately. Do not hesitate to call them if you need anything–you won’t regret it!

Wendy Collins

Mannix has always been professional from service calls to repairs and replacements. The technicians are always polite and knowledgeable. They consistently exceed our expectations.

Gary Hendricks

Mannix proved very responsive in fixing my A/C system. The tech, Erick, was very professional by taking the time showing and explaining to me the system problem prior to taking action replacing the coil. Ashleigh, customer service, was excellent in addressing and following through on concerns in order to achieve total customer satisfaction.

M. Reyzer

My 24-year-old heat pump finally decided to stop working. I sent a request for a replacement estimate late one night through the Mannix website and received a phone call early the very next morning to set up an appointment. Eric Holzworth stopped by my house the next day to go over my options. He was wonderful and so easy to work with and answered every question I had. He definitely listened to me and my concerns did not push me into purchasing a high-end system which I didn’t need. The technicians arrived at 8am and were finished with the entire installation by 1pm. They were very courteous and left my house in pristine condition. I HIGHLY recommend Mannix! They always returned my calls and emails right away, and Eric made sure I received all of my equipment on time–even with Carrier factory delays/limited supplies due to COVID. So glad I chose Mannix. I love my brand new Carrier system and my cold house during these hot and humid days.

M.B.

We were in desperate need of a fix on our AC system during the July heatwave. The issue arose on a Saturday. Mannix came to the rescue in short order, fixed it, and at a reasonable price.

Silvio G was the technician, and he was GREAT.

We would definitely use Mannix again!

Patricia Ryan

I have been using Mannix for years. They have replaced my HVAC system and I have them do maintenance twice a year. The past couple of visits have been done by Ramiro. He is professional, polite, knowledgeable, and very helpful in assisting me with tips on the best ways to operate my system. Today, he installed a water safety device and taught me exactly how it works and how to reset it. I’m so impressed with him! I will continue with Mannix for years to come as I find them to be very reputable and reliable. Thank you!

Rachel Craft

I’ve been using Mannix for years and have never been disappointed. They’ve replaced my HVAC, hot water heater and installed a humidifier on my furnace. Whenever I need them, they can get me on the schedule in a timely manner. All the personnel are great and I trust Jerry and his team with their recommendations and the work they do. Would highly recommend.