How long should my HVAC system last?

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An HVAC unit is not something you walk into the shop to buy or replace daily. These systems are expensive and a significant investment for homeowners. Therefore, it matters how long they are likely to serve you. Different manufacturers have varying lifespan pegged on the HVAC systems they create. However, on average, HVAC systems are expected to last at least 15 to 25 years, depending on several factors. Understand all the factors that may affect the longevity or lifespan of your HVAC unit before you purchase.

Maintenance Matters

Your HVAC system will last as long as 25 years or serve you less than five years, depending on how well you maintain it. Even the most expensive and latest models of HVAC systems break down permanently when neglected and ignored. An HVAC system should be properly maintained and professionally tuned as recommended by the manufacturer. A regular serving of the HVAC system ensures that every component works as it should. What’s more, even warranties apply only if you stick to the care and maintenance rules.

Initial Quality

The initial quality of the HVAC system determines how long it lasts. It would not last long if the unit was defective or had a few poorly designed components from the word go. Repairing or attempting to fix the faulty parts may not work. Such HVAC systems are often written off since the defect is manufactured. Be careful when selecting new AC units for your home. Buy from reputable brands and test the unit before taking it home.

Size Matters

One may ask how this relates to the longevity of an HVAC system. Size is essential since it influences the efficiency of the unit. When you get the wrong size of HVAC units, then they will overlook. Consequently, there will be a lot more wear and tear, which means that parts are likely to require replacement. More often, the moment you start replacing HVAC components, then your system is on its way out. Such systems are likely to serve you less than the expected duration. Never underestimate the need to get the right-sized HVAC system to your home. Have an HVAC professional assess your house needs and give you exact size requirements. No one wants to pay high bills all year and still have to replace the HVAC system sooner than they expected.

Poor Installation

It is possible to buy a perfect HVAC system only to install it poorly. When the unit is wrongly installed, the efficiency is affected right away. Besides that, you also have to start dealing with constant repairs and re-adjustments, which affect the unit’s lifespan. Always have the HVAC system installed by a competent and experienced professional.

WRONG use and Environment

Poor or wrong use of the heating and cooling unit can overwork and lower its lifespan. For example, heating or cooling your house with the doors and windows open in a misuse that overworks the unit. Overloading the system also puts unnecessary strain on it. It is also possible to compromise your HVAC system’s lifespan when you use it in salty environments such as coastal areas since the components are affected by the salt.

In the end, how long the HVAC system lasts depends on several things, and there is no sure way of determining how long yours will serve you. The best you can do is to keep it in good shape.


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