6 Common Reasons To Replace Your HVAC Unit

A functional HVAC unit can keep the house comfortable and enhance air quality. However, like other appliances, these devices don't last forever. After some years, you'll have to replace the system to regulate indoor temperatures.

But when is the best time to replace an HVAC unit? Here are the top scenarios when you can invest in a new system.

1. Improve Air Quality

Although many buildings are air-tight and energy efficient, the indoor air can be more polluted if you don't ventilate the house properly. An HVAC unit detoxifies a living space, making it cleaner and healthier. These units have air filters and purifiers to remove harmful vapors, germs, and contaminants. Others even have dehumidifiers that maintain the required humidity. However, older units might no longer be able to provide these benefits.

2. Eliminate Loud Noises

Are you constantly forced to raise your voice whenever you are near the HVAC system? This is a clear sign you need a new unit because the latest devices have become quieter.

Squealing and grinding sounds clearly indicate that it's time to replace the old unit. Squeals could mean that a condenser fan motor is working hard or the blower motor is faulty. You may also hear a buzzing sound that could be a sign of a broken compressor, refrigerant leakage, or damaged parts.

The best way to get a quiet and peaceful home is to replace the HVAC unit. This is particularly vital if the current system is too old or if the device has many worn-down parts.

3. Acquire Consistent Temperatures

One frustration you may face when using an older HVAC unit is uneven heating or cooling in various rooms. The issue could be a leak or clog in the ductwork, poor insulation, or incorrectly calibrated hardware. Calibration can become more challenging as the unit ages.

Buying another device can help you attain consistent temperatures throughout the house. Besides investing in a professionally calibrated HVAC unit, ensure the home is insulated.

4. Lower Repair Expenses

After installation, you must maintain the HVAC unit to ensure it operates optimally. However, there are instances when the system may become faulty, and only a seasoned HVAC technician can fix the damages. If the issues keep recurring and the repair costs increase, consider purchasing a new unit.

The technician may recommend repairs like refrigerant recharge or a fan belt replacement. But, if the HVAC unit is old and needs major repairs, such as a new compressor, you may consider replacing the whole system.

5. Lower Utility Expenses 

Although an HVAC system has been efficient during the first few years after installation, it may lose its ability to regulate indoor temperatures over time. Many property owners who face this problem change the thermostat settings to keep the house more comfortable. This may work, but it forces the unit to work hard, increasing the power bills.

When buying a new HVAC unit, pick an energy-efficient model. Select a unit with Energy Star approval and a higher SEER rating. Also, consider the unit's size and choose the one that meets the cooling and heating needs.

6. Boost Property Value

Many potential homebuyers check the HVAC's condition before purchasing the home. If you have an old unit, the property may not sell fast. Buyers may avoid incurring maintenance or replacement costs immediately after acquiring the house. 

Besides, older units may not be efficient, which increases running costs. Therefore, get a new HVAC unit to boost your property's resale value before placing the home on the market.



Once you decide to replace an outdated HVAC unit, assign the installation task to professionals. At Preferred Mechanical Services, we can help you pick the right unit size and install the system, making the entire process seamless. Contact us today to learn more about your options.