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Garage Ventilation Options - Octobe...
Garage Ventilation Options - October 19, 2022
What Is the Best Way to Ventilate a Garage?
Does your garage stink? Poor ventilation could be the culprit. So what are your garage ventilation options and what is the best way to ventilate a garage?
There are 10 garage ventilation options that are effective, each in its own way. But the best way to ventilate a garage would be to use a combination of these.
Mini split air conditioner is the best option for garages in hot climates. A combination of floor and exhaust fans will reduce condensation if you live in a cold climate.
If you are lucky enough to live where it is breezy and temperatures are moderate the best (and the cheapest) way would be to keep garage doors & windows open. Install garage door screens and windows though to keep the bugs out!
Why Is Garage Ventilation Important?
Ventilation is required for comfort, health & well-being. Ventilation is even more important in a garage as it:
Helps Cool a Hot Garage
Good ventilation will help cool down a hot garage. Proper ventilation facilitates air circulation within the garage. Cool air from outside is sucked into the garage closer to the floor. The warm air rises towards the ceiling and is exhausted from there.
A well ventilated garage can be several degrees cooler than a garage without ventilation.
Reduces Condensation
Condensation on the garage floor happens when warm garage air comes in contact with the cooler garage floor. Air circulation, as a result of good ventilation, keeps the air near the garage floor moving.
The temperature of the air adjacent to the garage floor is less likely to drop below the dew point. The possibility of condensation on the garage floor reduces.
Condensation makes your garage floors wet, slippery and a hazard risk.
Removes Fumes & Odors
Your garage is not a garden of roses for sure. Whenever you park your car or start the engine, exhaust fumes are filling up the garage.
DIY projects requiring painting, oiling, greasing, sawing wood, etc. add to the unpleasant & unhealthy odor. Storage of sweaty sports gear, smelly garden supplies, dirty bikes, etc. play their role too.
Without good ventilation, your garage would not smell too good!
GMS Intro
GMS Intro
Promotes Well Being
Still air can be stifling. However, even a gentle breeze makes you feel better. Why? Air movement helps evaporate the moisture on your skin. The results is a slight cooling of your body.
Gentle motion is uplifting and calming at the same time. Just having gently flowing water or air near you has this magical effect.
Movement is a sign of life and the human brain is hard-wired to respond positively to such signals.
How Much Ventilation Does a Garage Need?
ASHRAE recommends 0.35 air changes per hour. This means that the air in your home should have changed completely 8 times during a 24 hour period.
ASHRAE (formerly called the American Society of Heating, Refrigerating and Air-Conditioning Engineers) recommends (in its Standard 62.2-2016, “Ventilation and Acceptable Indoor Air Quality in Residential Buildings”) that homes receive 0.35 air changes per hour but not less than 15 cubic feet of air per minute (cfm) per person. as the minimum ventilation rates in residential buildings in order to provide IAQ that is acceptable to human occupants and that minimizes adverse health effects.
Source: The US Environmental Protection Agency (EPA)
If anything, a garage needs even more ventilation than your home!
10 Top Garage Ventilation Options
Garage ventilation requires that fresh air from outdoors must move in and stale, humid and hot air from within must move out. You need vents for inlet and exhaust of the air and these can be set up on the door, walls and roof of the garage.
Passive ventilation systems use natural air flow. Cool air is heavier than warm air. Naturally cool air will stay at the bottom while warm air moves up.
Active ventilation systems push or suck air using mechanical energy. A simple example is a fan.
The top 10 garage ventilation options are:
1. Windows in the Garage
Some garages already have windows. If yours does not have one, you could always install one on one of the walls. Actually having 2 windows on opposite walls will be even better for natural air circulation.
Keeping garage windows open for ventilation is a simple yet effective option. Having said that you need to:
- Install window screens to prevent bugs & pests from coming in
- Fit strong window grills for security from burglars
- Be aware that open windows will compromise on privacy & noise levels
2. Garage Door Screen
The garage door is the biggest opening in your garage. You would get plenty of fresh air if you could leave your garage door open for a few hours in a day. You would get plenty of flying and crawling insects too!
The simple solution is to install a garage door screen. Let in fresh air but keep bugs & pests out. Garage door screens can be quite affordable and simple or expensive but with a lot more sturdiness & convenience.
Take your pick from LIAMST Magnetic Garage Door Screen or Liveinu Upgraded Magnetic Garage Door Screen
3. Garage Door Vents
Garage door vents are installed on the bottom most panel of the garage door. They will naturally bring in fresh air when coupled with an exhaust fan on the far end of the garage.
To be honest, they do take away the beauty from a garage door but they get the job done. Just be aware (and take precautions) against
- Rainwater getting in (louvers help but only to a degree)
- Entry of crawling insects and reptiles (use mesh screens)
4. Garage Wall Vents
Garage wall vents function in exactly the same way as garage door vents. Install them on the lower half of a garage side wall. Install an exhaust fan on the upper half of the opposite side wall. That’s it. You have got yourself a nice economical garage ventilation system.
5. Exhaust Fan
The exhaust fan is a relatively cheap garage ventilation option. You can mount it on the side wall. The exhaust fan should be mounted high. The warm air in the garage rises up and the exhaust fan can then push it out.
Check out AC Infinity AIRLIFT T14, Shutter Exhaust Fan 14-inch with Temperature Humidity Controller.
Couple this exhaust fan with some garage door or wall vents and you will have a very effective garage ventilation solution at a modest cost.
6. Window Air Conditioner
Looking for more features than an exhaust fan. Spend some more money and get a window air conditioner.
A window air conditioner will not just ventilate, it will cool the garage as well. But installing a window air conditioner is a lot of work. You need to cut a hole in the wall, the size of the window air conditioner (typically 30″X30″). And then you need supports.
Not the best of options in my opinion.
7. Mini Split Air Conditioner
A Mini Split Air Conditioner is a better garage ventilation option than a window air conditioner. It will cool, heat, dehumidify and of course ventilate. It is quiet and does not need a big hole in the wall. The Indoor Unit and the Outdoor Unit can be mounted as per your need & convenience.
It is important to get the model which has sufficient cooling power for your needs. Typically an 18000 BTU should be fine for a 3 car garage. Check out the price of 18000 BTU Mini Split Ductless Air Conditioner with 1.5 Ton Heat Pump AC/Heating System on Amazon.
- 18000 BTU Mini Split Ductless Air Conditioner from Air-Con Int.
- It is a high efficiency air conditioner, heater and dehumidifier all in one.
- Built with pro-grade materials for a long life.
- WIFI ready with optional additional remote.
The only catch. It costs twice as much as a Window Air Conditioner. But it is great if your objective is to get a Climate Controlled Garage.
8. Roof Wind Turbine
If your garage has an attic then the attic roof offers a few garage ventilation options.
A wind powered roof turbine is an energy neutral way to get the hot air out of your garage. It cools as it ventilates and does not cost anything to run. Needs minimal maintenance too.
9. Roof Mount Attic Fan
Maybe the wind in your area is not enough. In which case a roof wind turbine may not be able to do the job. In that case you can install a roof mount attic fan. Think of it as an exhaust fan for the roof.
Check out 1000 CFM Mill Power Roof Mount Attic Fan from Masterflow at Home Depot. It is available in Electric, Solar or Hybrid options.
10. Air Circulating Fan
Air Circulation is not the same as Ventilation. There is no “air change” in air circulation. Air circulation is about moving the garage air from one area to another. Air circulation has its own benefits.
However, air circulation fans will accelerate the ventilation process, natural or forced, as long as there is an opening for fresh, cool air to get in and another for stale, warm air to get out!
Portable Air Conditioners & Swamp Coolers are also an option, but they are really not very effective.
Thank you very much for reading the post. I do hope you found it informative and useful.
