Makeup Air in Near Passive House
I am naveen, We are installing a Thermador Freedom Induction Cooktop, with 350 CFM Ventahood Exhaust Fan(32 inches above cooktop) in the Kitchen. An ERV outlet is 8ft away from Cooktop. House is expected to be less than [email protected] Pascal(target is about [email protected] Pascal). We cook on daily basis with all sort of spices and ocassionaly moderately greasy food( we do not grill inside).
Since there is no gas cooktop,
1. do i really need 350 CFM?
2. do i really need to setup make up air?
3. Moment i puncture exterior walls with vents i am going to loose Air Tightness and not sure how much of energy savings with it.
Ventahood non-venting exhaust systems are super expensive(about5k+) and i am not able to find a demo piece in and around Ohio. i have to go to NewYork or Dallas, making it hard to make a decision. I am long time user of ventahood and i feel rest of the market is nothing but glorified noise makers.
So i am wondering if it really make sense to puncture the envelope by venting outside and loose energy savings.
No i have not seen a single article that justifies make up air in a tight house(ofcourse for valid reason), but then i will have to eat only foods off the cold storage section and breads.
Appreciate your insights
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