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Michigan’s winters can certainly be brutal, but a good furnace will help you stay warm and toasty while waiting for better weather to return — if it works properly, that is.
Unfortunately, furnaces can suffer from a number of problems that can leave Michigan homeowners shivering and in need of help from HVAC professionals. To help you better understand your furnace and some of the reasons it may not be working properly, we’ll share a few of the most common problems they experience below.
10 Common Furnace Problems Michigan Homeowners May Experience
The following issues are some of the most common furnace problems Michigan residents experience during the winter.
1. No Warm Air
There are a number of reasons why you may not feel warm air coming from the vents in your home. Some of these reasons — including ignition, gas line, or control board issues — will require the help of an HVAC technician to solve. But you can eliminate a few common causes by checking out your thermostat.
Start by making sure that your thermostat is set to “Heat” and “Auto.” Assuming that’s correct, increase the set-point temperature a bit. If that doesn’t cause warm air to start flowing out of your vents, you’ll want to contact a reliable HVAC pro to conduct an in-depth evaluation.
2. Furnace Blowing Cold Air
In other cases, you may notice that air is coming out of your vents, but instead of being warm, it is chilly. Clogged or dirty air filters can cause this issue, so start by replacing the one in your furnace. If that doesn’t help, your furnace may be suffering from a pilot light issue and in need of a professional assessment.
In some cases, your furnace may not be blowing warm air because it is overheating. When this happens, the burners may be shut down for safety. This kind of issue will also require the assistance of a licensed HVAC technician to address.
3. Uneven Heating
Airflow problems can make some of your rooms feel warm and comfortable while others remain cold and drafty.
There are a number of potential causes of poor airflow, but start by checking your air filter. If it is dirty or old, it may be preventing air from passing through properly. If that doesn’t solve the issue, check the vents in the different rooms of your home to ensure that they’re all open.
If neither of those steps proves helpful, you’ll want to have your ductwork inspected by a professional.
4. Pilot Light Problems
It’s always a good idea to check your pilot light when trying to figure out why your furnace isn’t working properly. Ideally, it should be silent, blue, and have a sharp, cone-like shape. If it is yellow, orange, noisy, or it flickers (or isn’t burning at all), you’ll want to contact an HVAC professional.
These kinds of problems can occur for a variety of reasons, including issues with the pilot assembly, gas supply, or ignition system, but you’ll have to rely on a licensed technician to determine and address the root issue.
Just note that many modern furnaces use electronic ignition rather than a standing pilot light. If your furnace doesn’t have a visible flame, it may be an igniter issue.
5. Furnace Won’t Power On
In some cases, your furnace may not turn on at all, despite the fact that your home temperatures have fallen below the setting on your thermostat. This can be caused by several issues that’ll require expert help to fix, such as control board problems.
However, there are a few simple fixes homeowners can try before calling an HVAC tech. For starters, check that the power switch on your furnace is turned on and verify that you don’t have any flipped breakers in your electrical panel. Additionally, make sure the furnace’s access panel is securely shut, as some units won’t operate if it’s ajar.
6. Strange Odors
Sulfur-like odors coming from your furnace represent a bona fide emergency. These are often associated with gas leaks, which put your entire family at serious risk. If you notice a sulfur-like odor, leave your home and call 911 immediately.
On the other hand, some odors are no cause for concern. For example, many homeowners notice a burning, metallic odor, generally the first time they turn the furnace on each year. This is usually caused by the dust in the system burning, and it will dissipate within a few hours.
7. Strange Noises
Some furnace noises are normal, such as the soft clicking sound you’ll hear when the thermostat initiates a heating cycle or the sound of your blower motor turning on. But some sounds can be indicative of a problem.
Any banging or rattling sounds should prompt you to schedule a service call as soon as possible, as you may be dealing with broken or loose bolts, while rumbling sounds may indicate a problem with your igniter or fuel supply. Screech-like sounds should also be assessed by an HVAC pro, as they can indicate a worn or damaged belt.
8. Condensation
Water forming on or around the base of your furnace can signal several different issues, depending on the kind of furnace you have. In some cases, it may simply point to a clogged drain line. This usually isn’t difficult for an HVAC professional to fix, but you’ll want to have it addressed quickly, before the reservoir can overflow.
In other cases, condensation can be the result of more serious problems, such as a cracked heat exchanger.
9. Short Cycling
Short cycling is the term HVAC experts use to describe furnaces that repeatedly turn on and off in short bursts. It’s a common problem, but it can occur for a litany of reasons, which is why it’s usually a problem that’s best handled by a professional.
A few of the most common causes of short cycling include dirty air filters, thermostat issues (including their placement), and overheating safety switches.
10. Rising Energy Bills
Rising energy bills can be a subtle sign indicating that your furnace is not operating properly. These problems are often caused by things like simple wear and tear, clogged fuel lines, duct leaks, or dirty air filters, but in all cases, the result is the same: reduced efficiency.
Your home may also have developed air leaks or drafts, which are allowing the warm air to escape your home.
Furnace Maintenance Tips: Keep Your Furnace in Good Working Order
Though often overlooked, furnace maintenance is important for maximizing the lifespan of your furnace and ensuring problem-free performance. So, be sure to complete the following tasks each year:
- Change your air filter every 30 to 90 days.
- Keep the area around your furnace clean and free of debris or obstructions.
- Clean your air vents and returns periodically (this is especially important for houses with pets or smokers).
- Monitor your furnace’s performance and note any unusual odors, sounds, or performance issues.
- Have your entire HVAC system inspected at least once per year, in the spring or fall.
Michigan Furnace Problems: FAQ
Still have questions about furnace issues? We’ve rounded up a few of the most common questions our customers have and answered them below.
How long should a furnace last in Michigan?
With proper care, a furnace should usually last for about 15 to 20 years in Michigan. The better the system is maintained, the longer it’s likely to last.
What is the most common reason for furnace failure in Michigan?
Dirty or clogged air filters are likely the most common reason that homeowners suffer from furnace problems in Michigan. Fortunately, this is something most homeowners can address themselves with periodic filter replacement.
What is the $5,000 rule for furnaces?
The $5,000 rule for furnaces is a guideline to help homeowners decide whether to repair or replace their furnace. To use the guideline, multiply your furnace’s age in years by the repair costs. If that figure exceeds $5,000, you’re usually better off replacing the furnace entirely.
What is the most expensive part to fix on a furnace?
There are several expensive components for a furnace, including the draft inducer motor and control board. However, the heat exchanger is generally the priciest component to replace.
What usually fails first on a furnace?
Because they experience a lot of use (and therefore wear), the flame sensor, igniter, and blower motor are some of the first furnace components to fail.
How much does it cost to check a furnace?
The costs associated with a furnace inspection or diagnosis vary, but they generally fall between $100 and $200.
Who do you call to check a furnace?
Anytime you have a furnace problem, you’ll want to contact a team of licensed HVAC professionals, like the Dynamic HVAC crew.
Let Dynamic HVAC Keep Your Furnace Working Properly!
If you have noticed problems with your furnace or you’d like to have it proactively inspected to avoid potential problems later on, our licensed technicians can help. Contact Dynamic HVAC today to get started. One of our customer service representatives will be happy to discuss your needs and schedule a free, on-site assessment and estimate.
With a legacy dating back to the 1970s, we’re dedicated to providing the HVAC solutions Michigan homeowners need. Our team has earned 5-star ratings on both Yelp and Google, as well as an A+ rating from the Better Business Bureau (BBB), and we’d love the chance to show you the Dynamic HVAC difference yourself.
Sources & References
- U.S. Department of Energy – “Furnaces and Boilers”
This resource provides a technical overview of residential heating system efficiencies, combustion processes, and maintenance requirements for optimizing seasonal energy utilization.
https://www.energy.gov/energysaver/furnaces-and-boilers - City of Richmond Department of Public Utilities – “Natural Gas Safety”
This official safety guide outlines critical protocols for detecting gas leaks, understanding odorants, and executing emergency procedures within a residential setting.
https://www.rva.gov/public-utilities/natural-gas-safety - U.S. Environmental Protection Agency – “Guide to Air Cleaners in the Home”
This publication evaluates the effectiveness of various air filtration technologies and portable cleaners in reducing indoor atmospheric pollutants and allergens.
https://www.epa.gov/indoor-air-quality-iaq/guide-air-cleaners-home - Angi – “4 Best-Case HVAC Repairs for a Broken Furnace”
This article identifies common low-complexity mechanical failures, such as faulty igniters or dirty sensors, that can be resolved without full system replacement.
https://www.angi.com/articles/4-best-case-hvac-repairs-broken-furnace.htm - Bob Vila – “Furnace Not Turning On? 12 Troubleshooting Tips”
This diagnostic checklist offers a systematic approach to identifying power supply issues, thermostat malfunctions, and pilot light failures in household heating units.
https://www.bobvila.com/articles/furnace-not-turning-on
