Many property managers say the bans are to prevent damage from improperly installed units, as well as injury and death caused by units falling from second-story rentals.
A basic window unit typically has a lower initial cost than other models and is relatively easy to install, but they guzzle energy, straining electricity grids, and can contribute to the planet-warming emissions driving extreme heat. Here's how standard window air conditioners stack up against other cooling options.
Split ACs are ideal for larger rooms and offer quieter operation but require professional installation and higher upfront costs. Window ACs are easier to install and more cost-effective but are noisier and less efficient.
The New Regulations
Starting January 1, 2025, all new residential air conditioners and heat pumps must utilize A2L refrigerants. Older refrigerants like R-410, which are likely the refrigerant used by your current system, are being phased out.
Many HOAs act as a law unto themselves. Step out of line and you can be fined for any number of things. Window AC units are often forbidden, and everything from ductless split systems to central air conditioning installations are governed by rules for noise, appearance, and location.
Repairs to air conditioning units do require a permit. This includes the replacement of coils.
2024 brought in some new rules around how efficient these systems need to be. The key one to know about is called SEER 2. It's just a new standard that makes sure air conditioners and heat pumps are up to scratch in terms of energy efficiency. The idea is to help reduce energy consumption overall.
While it is not usually illegal to install an air conditioning unit in your own home, there are several important factors to consider before taking on this DIY project. Local building codes, refrigerant handling, electrical work, and proper sizing and placement are all critical aspects of a successful installation.
HVAC systems manufactured in 2025 and beyond will no longer use R-410A, the most common refrigerant in current residential air conditioning units and heat pumps. This is part of a global effort to reduce the environmental impact of refrigerants that contribute to global warming and ozone depletion.
Ductless Mini Splits are a more preferred choice because they offer increased energy efficiency, enhanced comfort, a quieter operation, improved indoor air quality, and aesthetic appeal. If you have a space that is difficult to heat or cool, a ductless mini split may be your best option.
1) Cost-effective: Window ACs are known for their affordability, making them an excellent choice for budget-conscious individuals or for cooling smaller spaces without overspending. 2) Easy installation: Installing a window AC is straightforward since they're designed to fit into standard window openings.
Compared to newer central air systems or ductless mini split options, many window AC units are not energy efficient. Some of the newer window units can be a bit more efficient than older models, but on the whole, these systems aren't very efficient. This leads to higher energy bills than you get with other AC systems.
EnergySage estimates that a typical window unit costs roughly $320 (CAD 428) per year to run in areas with a 5-month hot season. Therefore, running a window AC will likely add around $27 (CAD 36) on average to your monthly energy bill.
Human Health and Mold Growth
For these window units to operate, they pull humidity out from the air and use it as part of their output to cool the area – but this kind of collection of humidity also increases the potential for mold to grow in or around the unit, threatening several areas of human health.
The biggest determinant in how long you should run your AC is whether your home uses central air or a wall/window unit. In general, wall and window air conditioning units with smaller capacities can typically run for up to eight hours at a time before they need to rest.
Here's What You Need to Know Before Buying an AC Unit. Homeowners can purchase several types of AC units directly. Window and portable AC units are the easiest type for homeowners to purchase and install.
Installing air conditioners in windows as a solo project can be done, but it is highly recommended to have some assistance when doing this project. Some window units can be heavy or awkward to maneuver when lifting into the window space. Having a helper can make the install safer and easier.
The Cons Side: Potential Pitfalls of DIY AC Installation
Some manufacturers void warranties if the unit isn't installed by a professional. Double-check your warranty terms before taking the plunge. Mistakes during installation can compromise cooling efficiency, shorten the AC lifespan, and even damage your home.
During the summer, a central heat pump works the same as a central AC, cooling your home by moving heat from the inside to the outside. Unlike central ACs, heat pumps can run in reverse to heat your home in the winter.
R-454B is the newest refrigerant, which will gradually replace R-410A, the refrigerant used in current HVAC manufacturing. R-454B is a blend of R-32, a hydrofluorocarbon (HFC), and R-1234yf a hydrofluoroolefin (HFO).
Trane and AirEase make our list of the best air conditioner brands for 2024 due to their high quality and extreme reliability. That said, Trane is considered a higher-end AC brand than AirEase by Lennox. Therefore, if you're looking for advanced features and technology, Trane is your best bet.
No, you should not install your own central air unit. Central AC systems are incredibly complicated pieces of equipment and require specialized knowledge and expertise to install properly.
A permit is required for the removal or replacement of a unit via a Mechanical Permit. However, when installing a mini split portable unit an electrical permit is required. A permit is not required for the repair or replacement of parts only.
There is no state law that specifically gives tenants the right to be provided with climate control measures like air conditioning or heating.