I'm curious to hear what experiences you all may have with these simple and relatively inexpensive devices out in the real world.
Here are some pictures and a basic definition of the type of fans I'm talking about:
4.7.12 Alternative Systems - Ventilation Cooling (2013 CA Energy Efficiency Standards)
The CEC also maintains a list of models approved for sale in California. Does this list adequately represent the state of the art?
Or are there other emerging whole-house ventilation technologies that home professionals ought to know about?
For this discussion, let's try to not confuse an old school "Attic Fan" (which isn't designed to ventilate a conditioned space) with a "Whole House Fan" (which is).
Don't hold back!
Roderick, I see that comments here have waned since the 6th.There are a lot of comments before that.
I want to respond to your comments about Airscape. Neil, the founder, went to a great deal of time trouble and , likely, expense to create the world's first 7 speed whole house fans that can be remotely controlled by smart phones from anywhere in the world. Then, apparently because customers were turning the systems on while away with windows closed, he announced a new vacuum sensor to inhibit his systems when windows are closed.
His systems ARE good but the cost per CFM is a bit high, much like Tamarack. Invisco now has the latest in efficiency, a totally automatic speed control that can be remotely controlled or not, and when turned on starts the fan up at high speed for maximum cooling at temps over 85F, then the speed reduces (and power) linearly from 85 to 70F when the fan is off. There is a manual option as well for winter air changes.
Invisco also offers thermally broken dual dampers for cold climates where IECC2012 specs are needed.
I would be interested in your thoughts on this new product line.
I am thinking of buying a Central Heat Pump. The climate here is very cold, especially in winter.
I have a very old central system that brings me many costs. I was thinking about something like that.
I should always ask a professional about central air conditioner sizes and which will fit my home the best. But I need an idea of what these systems do.
I am not in favor of this whole house fan. Maybe they are more cheaper than air conditioners but It is not really works for everyone. I highly recommend mini split systems.
Thanks for sharing...
But I am still confused about which one to choose. I recently purchased a condo pre construction condos in Markham. I'll be moving into the condo this year itself. The construction is going smooth and on time. So, I was thinking of air conditioners. But sort of in a confusion after hearing about the whole house fans from one of my friends. So I started searching for the same online, that's when I bumped into this thread.
So, just wanted to make sure if this will be good for condos too? Please help!
A whole house fan is usually installed on the attic floor near the center of your house. In the late evening or early in the morning this fan is turned on to exhaust hot or humid air from the house. Cooler outdoor air enters through open windows to lower the indoor temperature. Whole house cooling using a whole house fan can substitute for an air conditioner most of the year in most climates. Whole house fans combined with ceiling fans and other circulating fans provide acceptable summer comfort for many families, even in hot weather. In addition to whole house fans, the ducts of your central heating and cooling system can be modified to provide whole house cooling. For more information on whole house fans, you could consult the leader in residential HVAC services experts at White Mechanical, Inc.