The Pitfalls of Improper HVAC Installation: What Homeowners Should Know

Imagine investing $10,000 or more in a new HVAC system. It’s from a top brand and features energy-saving technology. But here’s the catch: if it’s not installed properly, you could wave your cash goodbye with pricey repairs, soaring energy bills, or even a costly reinstall.

Unfortunately, improper HVAC installation is more common than many realize, leading to a host of issues affecting comfort, health, and finances. HVAC.com discusses steps to take if you suspect your system wasn’t installed correctly.

How Common Is Improper HVAC Installation?

Improper HVAC installation is surprisingly widespread. As much as 90% of HVAC systems are installed with some form of error, according to studies. Errors range from minor issues, such as incorrect thermostat placement, to major problems like improperly sizing the HVAC system.

To avoid these problems, ensure you hire a qualified and reputable heating and cooling installer.  These professionals have years of knowledge and experience to ensure your system is sized correctly, placed in the optimal location, and installed according to code and the manufacturer’s specifications. 

By hiring a company with a strong reputation and proven history of quality installation work, you gain peace of mind knowing your HVAC system will function safely and efficiently for years to come.

Why Does Improper HVAC Installation Happen?

Several factors can contribute to an improperly installed HVAC unit:

1. Lack of Proper Training

HVAC installers may lack the comprehensive training necessary to handle modern HVAC systems which feature advanced technology. Poor training can lead to mistakes during the installation process, from improper ductwork to incorrect refrigerant levels.

2. Rushed Jobs

Some HVAC contractors may cut corners to complete jobs quickly and move on to the next one. This rush can result in skipping steps and overlooking details that may compromise the system’s efficiency and performance.

3. Inaccurate Load Calculations

A critical step in installing an HVAC system is performing an accurate load calculation to determine the correct size unit for the home. If this calculation is done incorrectly, you can end up with a system that’s either too large or too small for the home, both of which can cause significant issues.

Signs of an Improperly Installed HVAC System

Identifying common signs of improper HVAC installation early on can save homeowners from long-term headaches and expenses. Here are some common symptoms to watch out for that may signal your system wasn’t installed correctly:

• Inefficient Heating and Cooling: Your HVAC system struggles to maintain your desired temperature or there are noticeable hot and cold spots throughout your home.
• Water Leaks: Water escapes due to poorly sealed connections or misaligned components in the drainage system. 
• Short Cycling: When your HVAC system turns on and off frequently, it’s known as short cycling. Short cycling reduces the lifespan of your system and indicates your HVAC unit was improperly sized.
• Electrical Issues: Overloaded circuits, tripped breakers, or frequent power surges that can harm HVAC components and reduce their lifespan.
• Unusual Noises: Loud or unusual noises, such as banging, clanking, or hissing. This can be a sign of issues with the ductwork or other components that were not installed correctly.
• High Energy Bills: A sudden spike in energy bills without a corresponding increase in usage often points to an inefficient HVAC system caused by poor installation.
• Frequent Repairs: Regularly needing repairs for your relatively new HVAC system.
• Poor Air Quality: Issues with dust, allergens, or humidity can be due to an improperly sealed system, affecting indoor air quality.

What to Do If You Suspect Improper HVAC Installation

If you suspect your HVAC system was not installed correctly, act quickly to limit any long-term damage. Here are the steps you should follow:

1. Get a Professional Inspection

Hire a HVAC professional to inspect your system thoroughly. They can identify any installation errors and recommend corrective actions. Be sure to choose an HVAC company with good reviews and appropriate certifications.

2. Request a Load Calculation

If you believe your system wasn’t properly sized, request a load calculation from a reputable contractor. This calculation will help determine if your current system is the right size for your home. A proper load calculation considers factors like your home’s square footage, insulation levels, window size, and local climate.

3. Check Ductwork and Airflow

Ask the technician to examine the ductwork for any leaks, blockages, or poor design that could be affecting airflow. Properly sealed and insulated ducts are crucial for an efficient HVAC system.

4. Evaluate Thermostat Placement

Ensure your thermostat is installed in an optimal location. Thermostats placed in direct sunlight, near drafts, or in isolated areas can give inaccurate readings and can cause inefficiencies.

5. Review Installation Documents

If you have documents from the original installation, review it to see if any shortcuts or deviations from standard procedures were noted. This can provide clues about potential problem areas.

6. Contact the Installer

If the inspection confirms your HVAC system was improperly installed and you are within the warranty period or the contractor’s guarantee, contact your original installer to address the issues. Reputable contractors will typically correct their mistakes at no additional cost.

Improper HVAC installation is a common but avoidable issue that can lead to numerous problems for homeowners. By understanding the signs of a poor installation and taking quick action, you can protect your home, improve your comfort, and ensure your HVAC system operates efficiently.