Top Mistakes to Avoid During Window AC Unit Installation in London, Ontario
Installing a window AC unit might seem straightforward, but many homeowners in London, Ontario, underestimate the nuances involved. The temptation to take the DIY route can be strong, especially when summer heatwaves strike.
However, improper installation can lead to energy loss, water damage, and even safety hazards. This blog explores the top mistakes to avoid during window AC unit installation, especially if you want your investment to last and perform efficiently. Whether you're a first-time buyer or upgrading your cooling system, this guide will help you make informed, practical decisions.
Key Takeaways
- Incorrect installation can reduce efficiency and increase energy bills.
- Level placement and proper sealing are non-negotiable.
- Skipping professional help often leads to recurring maintenance issues.
- Safety and structural stability must be prioritized during installation.
- Always factor in the unit's drainage system and local weather conditions.
Overview
Window air conditioners are a popular choice in London, Ontario, for keeping homes cool without the complexity of a central system. Their relatively low cost and ease of access make them ideal for renters and homeowners alike.
But the benefits can quickly fade if the unit isn't installed properly. From compromising your window frame to allowing moisture and pests to enter, poor installation can create more problems than it solves. This blog will break down the most frequent missteps people make, why they matter, and how to avoid them.
Common Mistakes to Avoid During Window AC Unit Installation
1. Installing Without Measuring Properly
One of the most basic yet overlooked steps is measuring the window and AC unit accurately. A unit that is too large or too small for the window opening won't sit securely. Worse, gaps left during installation could allow hot air and insects to enter, undermining the unit's effectiveness.
Measure the height and width of your window before purchasing your unit, and double-check your numbers during installation.
2. Ignoring the Level
Window AC units must be slightly tilted backward to allow condensation to drain outside. If the unit is installed flat or, worse, tilted forward, water can leak into your room.
Not only does this damage walls and flooring, but it also creates the ideal environment for mold and mildew. Always use a level tool during installation to avoid these issues.
3. Skipping the Support Bracket
Some assume that the window frame alone will support the weight of an AC unit. This is a risky move. A heavy unit without proper support can damage the window sash, or worse, fall out completely—posing danger to people below.
A sturdy support bracket takes pressure off the window and provides peace of mind.
4. Poor Weather Sealing
Gaps between the AC unit and the window frame are common but unacceptable. They let in outdoor air, reduce efficiency, and raise your energy bills. Use foam sealing strips or insulation panels to close these gaps.
In London, Ontario, where weather can shift quickly, proper sealing helps maintain your indoor temperature and keeps allergens out.
5. Overloading Electrical Circuits
Window AC units demand a significant amount of power. Plugging your unit into an overloaded circuit or using a lightweight extension cord can lead to overheating or even fires. It's essential to use a dedicated outlet and consult a qualified technician if you're unsure about your home's electrical capacity.
6. Blocking Airflow
Avoid placing furniture, curtains, or any obstruction in front of your unit. This restricts airflow, forcing the AC to work harder and reducing its lifespan.
Likewise, ensure the outside part of the unit has enough clearance to expel heat efficiently. Lack of proper airflow undermines the entire purpose of your window AC unit installation.
7. Not Checking the Drainage
Water that collects inside your AC must have a way to escape. Failing to create proper drainage results in standing water and interior leaks. Be sure the unit is tilted correctly, and that there’s a clear path for water to flow outside. In London’s humid summers, this step is especially important.
8. DIY Repairs Without Know-How
Attempting to fix issues without understanding how the AC system works can do more harm than good. If something feels off after installation—strange noises, inconsistent cooling, or dripping—don’t guess. Professional help will cost less in the long run compared to fixing a worsened problem.
Still wondering how to get your window AC unit installation done right? Don’t risk poor performance, water damage, or safety issues that often come with DIY attempts. Trust the professionals at Carver Sheet Metal to handle the job with precision and care. Our team has years of hands-on experience installing window AC units in homes across London, ON, and we know exactly what it takes to make sure your system is secure, level, and efficient.
From selecting the right size unit to sealing the frame properly and checking for electrical safety, we handle every step thoroughly so you can enjoy a cooler, more comfortable home without any hassle. Whether you live in an apartment, condo, or detached home, we’ll make sure your AC is installed correctly and built to last.
Visit us at Carver Sheet Metal, located at 11245 Sunningdale Road E, London, ON, or call us at +1 (519) 686 1545 to schedule your installation. Don’t settle for shortcuts—choose peace of mind.
FAQs
Q: Do I need a professional for window AC unit installation?
A: While it's possible to install it yourself, improper setup often leads to long-term issues. A professional can optimize safety and efficiency.
Q: How much tilt should my AC unit have?
A: A backward tilt of about 1/4 to 1/2 inch is recommended to help with drainage.
Q: Can I use an extension cord for my AC unit?
A: It’s best not to. Most extension cords aren’t rated for high-wattage appliances and can pose fire hazards.
Q: What if my window isn’t standard size?
A: Custom support brackets and insulation kits can adapt most units to fit safely and securely.
Conclusion
Window AC units are a practical solution for surviving London, Ontario’s hot months, but only when installed correctly. From leveling and support to sealing and drainage, each step matters more than you might think.
Skipping even one can compromise comfort, safety, or efficiency. If you're searching for help with window AC unit installation, skip the trial and error. Let professionals like Carver Sheet Metal get it right the first time—safely and effectively. Ready to stop sweating and start relaxing? Call us today.
