Winter is here and so is the cold weather that can make your home or business HVAC system work 24/7. The HVAC system becomes the heart of the home as it pumps cool air in the summer and warm air in the winter to keep your home comfortable.  So how long is a HVAC system good for? What is the average life span of a unit that has been installed? How can you know when it is time to replace the entire system and begin fresh?

These 3 easy to spot symptoms will tell you whether you need to replace or repair your HVAC unit.

1. Smell – Can you detect any unusual odors?  In older homes, the HVAC unit may smell musty or moldy. This can be a sign of built up condensation that has turned into mold. This can be cleaned and brought up to standard though if after a cleaning it continues to smell musty, you may need to consider replacing the unit.  A sulfur like smell that reminds you of rotten eggs is a cause for having the unit inspected quickly as it can be a natural gas leak.  Does the unit smell like burning plastic or smoldering? An aged system can overheat and with combination of cobwebs or dust, make a burning smell. If you smell this in your house, shut the system off quickly and call for repair which can most likely mean, replacement.

2. Sounds – Can you hear the HVAC unit working?  Normally you can hear the system turn on and off though if it begins running and there are additional noises, like knocking or pinging, this is a sign that the unit has worn through it’s motor and a replacement is imminent. If you hear something that sounds like hissing or air squealing then it could be a leak in a hose and will need repair.

3. Age – How old is your HVAC system?  An HVAC unit can last for over a decade when properly maintained and serviced professionally. Though, if you have purchased a home or moved into a rental home that has an HVAC system that performs poorly, makes noises, has unusual orders it is a sign that the age of the system is signalling for replacement. There are many benefits to investing in a new HVAC system, such as a newer more energy efficient unit that comes with a warranty on parts and a guarantee on labor.

The most important thing you can do for your family’s comfort and the efficiency of your HVAC system and energy bill, is to start with an inspection of the unit. In Downriver Michigan, a great place to start is with the licensed, bonded, insured professionals at Michigan HVAC Pros.  When you schedule an inspection, a team member will arrive, inspect the unit and system and then provide a detailed written report of any issues along with an estimate of cost of repair.

It’s easy. Get started now by calling (734) 818 – 7141 or visit on the web


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