These workhorses can last decades with proper repair and maintenance
Most HVAC systems last 10 to 30 years, with an average of 20 years.
Different types of HVAC systems have different life spans.
Proper maintenance will increase your system’s life span.
It may be time to replace your system if you notice rising energy bills, you have poor air quality, or you need constant repairs.
Wondering how long HVAC systems last? Most HVAC systems will last 10 to 30 years, with an average life expectancy of 20 years. However, the type of system and other factors contribute to how long an HVAC system lasts. Keep in mind that HVAC maintenance and regular repairs can extend its life span, but you’ll have to replace even the most well-maintained systems eventually.
The complexity and type of HVAC system you select play a big part in how long it lasts. Some have more intricate components that wear out more quickly than others. The common examples below will help give you a better idea of what to expect when it comes to life span.
| HVAC Type | Life Expectancy |
|---|---|
| Furnace | 15 to 30 years |
| AC unit | 15 to 20 years |
| Heat pump | 10 to 15 years |
| Boiler | 20 to 30 years |
The type of setup you use plays a big part in how long your HVAC system will last, but you’ll also have to consider the following when estimating its longevity.
Neglect is typically the biggest culprit contributing to a system's premature demise. Regular cleaning and annual professional HVAC servicing by a local HVAC technician can significantly extend its life span.
Complex HVAC installation isn’t a job for the average weekend warrior. Mistakes won’t just reduce the system’s life span; they can also compromise your safety. Calling in a certified pro means you’ll start off with well-fitted equipment that meets appropriate safety standards.
It pays to take advice from the pros regarding HVAC brand comparisons. Some manufacturers and systems will go the extra mile. High-quality products could run for a decade longer than budget brands that might start to crack and leak sooner.
It’s rare for systems in coastal homes to last longer than 15 years—salt exposure corrodes and clogs the system. Living in dry, dusty, desert locales can also result in a buildup of life-shortening debris.
If you live in a region that regularly experiences extreme heat (over 100 degrees Fahrenheit) or cold (below 30 degrees Fahrenheit), expect the system to need replacing sooner than in a temperate region because of how much longer and harder it has to work.
Your HVAC system won’t have to work as hard if you improve your home’s insulation. You’ll see savings on your energy bills and be able to use the system for longer.
It could be as simple as sealing doors and windows and adding some thermal curtains, or you could get the pros in to overhaul the insulation in your floors, walls, and ceiling.
One of the problems of selecting the wrong AC size or heating unit is that it won’t run as efficiently, causing unnecessary wear and tear and a reduction in life span.
An oversized unit that is constantly short-cycling isn’t good for the motors, and it can lead to overheating. Too small, and the system has to run for much longer than it should, putting unnecessary pressure on the components.
If you have a heating rather than an air conditioning system, it might last a decade or so longer. Air conditioning components take a battering from moisture and corrosive chemical products.
Also, it depends on the component that is malfunctioning. Thermostats or vent hoses, for example, are often easy and inexpensive to replace. But if there is a major malfunction with an aging heat pump or the air conditioning electrics, this usually signifies it’s time for a full system replacement.
If it's getting old and noisy, you might wonder how to tell if it’s time to replace your heating or cooling system. While it might still be salvageable with simple repairs and maintenance, watch out for these telltale signs that it’s reaching the point of no return.
HVAC repair costs average $350. However, if you’re regularly shelling out for more costly repairs and your system is at a decent age, you might be better off investing in a new one. If the cost of the repair works out at over one-third of the value of the aging system, this is a good indication that investing in a new one will be money well spent.
Old or overused systems don’t operate as efficiently as modem models subject to moderate use. When they are on their way out, you might see your bills take a sudden hike. If you are concerned, arranging an energy audit by a certified professional will give you a better understanding of how energy-efficient your system is.
If your system was installed before 2010, there’s a good chance it uses this refrigerant. As of 2020, the United States Environmental Protection Agency doesn’t allow the manufacturing of R-22 freon due to the damage it causes to the environment.
Supplies are running low, so replacement might make more sense when a major system repair involves this refrigerant.
If, even after maintenance and repairs, your old air conditioning is contributing to dust, high humidity levels, and mold and mildew buildup, then it’s time for an upgrade.
Fossil fuels, like heating oil, are some of the least environmentally friendly energy sources, according to Swarthmore College. Swapping to a modern electric HVAC system is often better for the environment and the bank balance.
Always feeling too cold in the winter or too hot in the summer despite having your air conditioning or heating blasting? Uneven temperatures or whole system malfunctions in aging systems can be a sign it’s going to be an expensive repair, and replacement might be a better investment.
If you’ve been lucky enough to have a 15- or 20-year warranty on your system, but it’s expiring soon, it might be time to start looking at options for a new system. This is especially true if you’ve been facing pricey repairs recently or you notice strange noises or odors coming from the system.
It’s worth putting aside some funds so that you don’t end up with an unexpectedly big bill when your existing system eventually kicks the bucket. The average HVAC replacement cost is $7,500. The final amount depends on the size and style of the unit, whether you need new components, and the brand you select. Contact an HVAC company near you for a quote.
To extend your HVAC system’s life span, it’s crucial to keep up with maintenance. This includes changing filters and thermostat batteries, keeping the outside unit clean and clear of clutter, and lubricating moving parts. Watch out for leaks, mold buildup, and blockages to ensure your unit stays in good working order. Spotting these issues early can be the difference between a simple, wallet-friendly repair and an expensive replacement.
Turn your system off when you're toasty or when you're out to prevent unnecessary wear. Using the timer on your thermostat so that it switches off when it reaches a certain temperature or turns on just before you get back from work is best. An annual maintenance contract can be helpful to ensure your system receives these important services at regular intervals.
