Don’t Fall for Bad Advice: Our Professional Response to the Worst Air Conditioning Tips on the Internet
In the world of residential and commercial air conditioning, it’s easy to fall into the trap of poorly informed tips that circulate freely online. At AirGreen, our mission is not only to provide top-quality HVAC installation services in Montréal, Laval, Longueuil, the North Shore, and the South Shore, but also to educate our customers and help them avoid costly mistakes. Today, we’re reviewing the 4 worst air conditioning tips that keep popping up online… and most importantly, explaining what you should actually do instead.
1. “Leave your air conditioner running all day, even when you’re not home”
This misleading advice is based on the idea that running your air conditioner continuously maintains a steady temperature and uses less energy. In reality, that’s simply false.
Why this is a bad idea:
Letting your wall-mounted air conditioner or heat pump run while you’re away leads to unnecessary energy consumption. Modern units are designed to reach the desired temperature quickly, especially inverter systems like the Fujitsu KZAH R-32 wall-mounted heat pump or Bosch BIVA IDS Premium R-454B units.
What to do instead:
Invest in a programmable or smart thermostat that adapts to your schedule and optimizes your HVAC system’s performance. At AirGreen, we always recommend this option during our wall-mounted air conditioner installations in Montréal and surrounding areas, as it ensures both comfort AND savings.
2. “You can install your air conditioner yourself to save money”
There are countless DIY tutorials out there encouraging people to install their own wall-mounted air conditioners, especially on home improvement forums. But this approach is not only risky — it’s often illegal in Québec.
Why it’s dangerous:
A poorly installed HVAC system can lead to:
-
Refrigerant leaks
-
Energy efficiency loss
-
Compressor damage
-
Voided warranties
-
Non-compliance with safety regulations
What to do instead:
Let a licensed team like AirGreen handle the installation. Our technicians have the required certifications and deep expertise in HVAC systems, including advanced models like the GOODMAN R-32. We also make sure your system is optimized and fully eligible for Hydro-Québec’s LogisVert grants, which can go up to $2,172.
3. “Just clean your air conditioner with a cloth and some water”
Some sites downplay the importance of professional HVAC maintenance, suggesting a quick at-home wipe-down — which can actually be harmful to your equipment.
Why this advice doesn’t work:
A damp cloth isn’t enough to remove the dirt and microorganisms building up in your unit’s coils, fans, and ducts. Improper cleaning can lead to premature equipment wear, reduced performance, and even poor indoor air quality.
What to do instead:
Schedule a comprehensive annual maintenance visit with a specialized company like AirGreen. During our service calls in Laval or Longueuil, we provide:
-
High-pressure washing of indoor units
-
Deep cleaning of evaporator coils
-
Refrigerant level checks
-
Full system drainage and fan inspection
4. “The bigger the unit, the better it will cool your home”
A classic misconception: thinking that a system with higher BTU output automatically means better air conditioning. In reality, this is one of the worst decisions you can make.
Why this is misleading:
An oversized system cools the air too quickly and shuts off — without removing enough humidity. The result: a cold but clammy, uncomfortable space. On top of that, short cycling wears out the equipment faster and increases your power bill.
What to do instead:
Have our experts perform a thermal load calculation before making a purchase. At AirGreen, we select the ideal capacity (12,000, 18,000, 24,000 BTU, etc.) based on exact criteria:
-
Size and orientation of the room
-
Building insulation
-
Number of occupants
-
Internal heat sources
For instance, in a recent project in Sainte-Julie, our team installed a Gree Extreme 18,000 BTU wall-mounted heat pump perfectly suited for a two-story home. Thanks to this approach, the customer enjoyed optimal comfort while qualifying for a $1,704 grant.
Expert Tips for Choosing and Maintaining Your HVAC System
Choose a smart, professional approach
Whether you’re a condo owner in Montréal or a building manager in Laval, avoid shortcuts and online “how-tos.” Instead, opt for a free HVAC consultation with AirGreen. We evaluate your project, recommend the best-fit equipment (Fujitsu, Bosch, Goodman, Gree, etc.), and carry out certified, guaranteed installations.
What we offer at AirGreen:
-
Complete thermal assessments before installation
-
Personalized advice based on your home and budget
-
Grant applications handled by our team
-
Annual HVAC maintenance to preserve performance and lifespan
-
Fast service across the North Shore, South Shore, Laval, Longueuil, and Montréal
Our Installations: Real-World Proof of Quality and Expertise
Over the years, we’ve completed hundreds of wall-mounted air conditioner and heat pump installations across Greater Montréal. Here are a few recent examples:
-
Oka: Installed a Sharp ZU1 15,000 BTU eligible for a $2,172 grant
-
Beaconsfield: Replaced a noisy unit with a Gree Extreme 18,000 BTU
-
Anjou: Full maintenance service including high-pressure wash, airflow checks, and filter cleaning
-
Saint-Lambert: Installed a Fujitsu KZAH R-32 12,000 BTU with Wi-Fi control
In Summary: Avoid Shortcuts, Rely on Expertise
Free advice online can sound appealing, but when it comes to air conditioning and indoor comfort, only a professional partner like AirGreen can guarantee your system’s reliability and long-term value. We’re here to support you every step of the way — from equipment selection to preventive maintenance, including flawless installation.
Avoid mistakes. Trust AirGreen.