I googled the hood and it's not cheap and is rated for 1100 CFM...
Wonder what other 1100 CFM hood folks due to make that much air?
In the short term I would open a nearby window & look into a throttle for that animal.
Originally Posted by mark beiser
A tight home with that much exhaust would probably be sucking sewer gas up a trap.
Get a swamp cooler for make up air, try not to cook big meals in the monsoon season. Or open up a kitchen window, not a winter solution.
In Canada you would have a make up air fan with an electric duct heater to temper the air.
Not going to run the hood exhaust through an ERV in this situation, not an ERV solution
The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.
Bingo, in the winter, with that kind of exhaust, you need to heat the air coming in. An ERV/HRV is not what you need. You need to bring in air when the exhaust runs, not exhaust more air. I see this all the time. The appliance company tells these people they need huge exhaust fans, but fail to mention the need for make up air. I would do something with this before winter. In the mean time, open the window when you use your fan. People have had CO poisoning from this exact situation. By the way, you don't need a blower door test. You already have a blower door hanging above the stove.
Originally Posted by Carnak
Thanks for all the replies.
One thing that I haven't done yet was to open (cut the drywall)the return vent in the kitchen. Also, I replaced my gas furnace to a high efficiency furnace with uses PVC pipes instead of Type B vent. The HVAC installer also noticed a 5" insulated duct running from the outside to the furnace room but not connected to anything. He told me that it was used to feed the furnace with air(make up air I would imagine). He told me that I could remove it because the PVC pipe runs to the outside of my home and now feeds the furnace as much air as it needs. Also he told me that my basment was cold in the winter because I had no return in the basement and suggested that I connect a 3" duct to the return and cut a hole in the drywall so it can draw the cold air out of the basment.
With all that said and done. Would it be a wise idea to connect that 5" insulated duct that runs to the outside of my house to the return duct? Could that possibly help my cause or do I absolutely need draw air into the kitchen?
That 5" duct would have no hope whatsoever of making up that much air.
Originally Posted by Dante1
With the pressures involved in the typical HVAC system, you would be looking at a 14" or larger duct to move 1000+ cfm. Not to mention that your system likely couldn't handle that much unconditioned outside air, it would totally overwhelm the heating or cooling capacity of the system.
You need a way to avoid changing out the air in the entire house several times over when that exhaust fan is running. With the volume of air involved, you would need a fan forcing air in.
To do it right, you may end up spending close to as much money on an appropriate makup air system as you did on that massive overkill of an exhaust hood.
LOL, I was thinking the same thing. You could suck a good tight 2500 sq ft house down to -50pa with ease with an exhaust hood like that.
Originally Posted by DesMech