Gas cooktop: OK with exhaust-only ventilation?
First, I’m talking about a new house being planned for Zone 4 Marine climate. We’re just about there with the design. My wife wants a gas cooktop. I want a simple energy-efficient house. It will be around 1850 sf, 3 BR, 2 BA. I’m not planning on being obsessive with the air sealing: probably will be ~3ACH50. Posts by Martin Holladay, Riversong, and AJ Builder, all people I trust, convince me that an exhaust-only ventilation system with Panasonic fans can work. And, of course, there are the houses by Carter Scott, as written up in the latest FH. Now comes my wife’s beloved gas cooktop. Martin has written,
“Needless to say, any tight house with an exhaust-only ventilation system shouldn’t have any atmospherically vented combustion appliances. Any combustion appliances should be sealed-combustion units.”
Does this mean a gas cooktop? No one in his right mind would use it without a range hood, and that includes my wife. Where do we stand with this?
Now comes Dr. Lstiburek, who is certainly no slouch, telling us that we should not “suck” as Martin, Riversong, AJ, and Carter Scott have been doing. Evidently there is a toxic cloud in my garage threatening to engulf me courtesy of a couple of Panasonic fans. And there, on pp. 74-75 of Fine Homebuilding, I can see Carter Scott’s houses, all using exhaust-only ventilation, and all obviously with attached garages. What is a poor GBA reader supposed to think? Can I use a gas cooktop in our new house? Does the exhaust-only option still pass muster in the new age of Lstiburek Orthodoxy? Thanks for any comments.