Installing a new furnace can be one of the smartest investments for your home’s comfort and energy efficiency. But even the best equipment won’t perform well if the installation process goes wrong. Whether you’re doing a replacement or a brand-new setup, knowing the top furnace installation mistakes to avoid can save you from unnecessary stress, high repair costs, and performance issues.
Let’s look at the most common installation errors homeowners make—and how to make sure your Furnace Installation in Brown Deer, WI goes smoothly from start to finish.
Choosing the Wrong Furnace Size
One of the biggest mistakes homeowners make is installing the wrong furnace size. A furnace that’s too large will cycle on and off too frequently, wasting energy. On the other hand, a unit that’s too small will struggle to keep your home warm.
To avoid this:
- Have a professional perform a load calculation before installation.
- Consider your home’s insulation, square footage, and window efficiency.
- Don’t just replace your old unit with the same size—homes change over time.
Local experts specializing in Furnace Installation in Brown Deer, WI can help you choose the perfect unit for your space.
Ignoring Ductwork Inspection
Even the best furnace won’t perform efficiently if your ductwork is leaky, dirty, or outdated. Many homeowners skip this step, leading to uneven heating and high utility bills.
Pro tip:
- Get ducts cleaned or sealed before installation.
- Replace old or damaged ducts.
- Make sure all vents are open and unobstructed.
Technicians who handle Furnace Installation in Brown Deer, WI usually check your ductwork for compatibility before installing a new system.
Poor Thermostat Placement
Your thermostat is the “brain” of your heating system, and its location greatly affects performance. Placing it near windows, vents, or direct sunlight can give false readings and cause temperature fluctuations.
Best thermostat placement tips:
- Keep it on an interior wall.
- Avoid drafts, heat sources, and sunlight.
- Place it in a central area for accurate readings.
DIY Installation Without Proper Knowledge
While DIY projects can be rewarding, furnace installation isn’t one of them. Furnaces require professional skills, specialized tools, and safety knowledge to install correctly. Attempting it yourself can lead to gas leaks, electrical hazards, or code violations.
Hiring certified HVAC technicians for Furnace Installation in Brown Deer, WI ensures your system is installed safely and meets local building codes.
Skipping System Testing After Installation
Some homeowners assume once the furnace is installed, the job is done. That’s a huge mistake. Proper testing is essential to ensure safety, efficiency, and performance.
Make sure your installer:
- Tests the ignition system.
- Checks for gas or air leaks.
- Measures airflow and temperature output.
- Verifies thermostat communication.
Testing helps catch potential issues before they turn into costly repairs.
Forgetting Regular Maintenance
A newly installed furnace needs consistent care to maintain performance and efficiency. Ignoring maintenance can void your warranty and shorten the unit’s lifespan.
Keep your system in top shape by:
- Changing filters every 1–3 months.
- Scheduling annual professional inspections.
- Keeping vents and returns clean and clear.
Local experts in Furnace Installation in Brown Deer, WI often offer maintenance packages to help you stay on top of upkeep.
Not Considering Energy Efficiency
Homeowners sometimes focus only on the upfront cost of the furnace and forget about long-term energy savings. A high-efficiency unit may cost more initially but will save money over time through lower utility bills.
When choosing your system:
- Look for ENERGY STAR® certification.
- Ask about AFUE (Annual Fuel Utilization Efficiency) ratings.
- Pair your furnace with a smart thermostat for better control.
Final Thoughts
Avoiding these furnace installation mistakes ensures that your heating system runs safely, efficiently, and for years to come. From selecting the right unit to professional setup, every detail matters.
If you’re planning a Furnace Installation in Brown Deer, WI, always trust certified HVAC professionals who understand local building standards and weather needs. A proper installation not only boosts comfort but also saves you money in the long run.
