# Products of Combustion **URL:** \ **Category:** Public Archive\ **Created:** [January 25, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012 "2004-01-25T00:00:00Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 25, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/1 "2004-01-25T00:00:00Z")
**Originally Posted By: bhendry** **This post was automatically imported from our archived forum.** * * * We see a gas range with either a recirculating range hood or a microwave above it quite often (no outside exhaust). What are the thoughts on that? Do you point it out? Bill Hendry [www.HandyHomeInspections.com](http://www.HandyHomeInspections.com) * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 24, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/2 "2004-01-24T00:00:00Z")
**Originally Posted By: Susan** **This post was automatically imported from our archived forum.** * * * Hi Bill, Not all ranges require exhaust fans and the same with microwaves. In my opinion, it is good to note the lack of fans or the type (direct exhaust, recirculating etc.) if there is one present. Point it out, note it in the report and explain manufacturer's specifications may not require them. Hope this helps! Sue * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 24, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/3 "2004-01-24T00:00:00Z")
**Originally Posted By: rpalac** **This post was automatically imported from our archived forum.** * * * Ranges do not need exhaust as pointed out. Microwaves are also very common above ranges. It is acceptable to have a range hood and/or microwave that is either vented or non-vented. (Meaning self circulating and not vented to the outside). There is one item that is often overlooked. There must be a minimum maintained distance between the top of the range burner or elements to the bottom surface of anything over head. This includes range hoods, microwaves, cabinets or even the family canary. (sick I know....I'm off the med's hahahah) Oh, back to the distance thing. The distance is......drum roll.....18". Since there is a move to replace the BOCA code with the International Building Code you need to double check that distance. At minimum they might have changeds it to 16' but I doubt it. Does anyone know the exact code section? (a little help from my freinds....) Bob P. * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 24, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/4 "2004-01-24T00:00:00Z")
**Originally Posted By: bhendry** **This post was automatically imported from our archived forum.** * * * Hi Susan, You're right. We've talked to Maytag and others. To me it just seems a better design, that if there is an appliance producing products of combustion, the products should go outside. Bill Hendry [www.HandyHomeInspections.com](http://www.HandyHomeInspections.com) * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 24, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/5 "2004-01-24T00:00:00Z")
**Originally Posted By: Susan** **This post was automatically imported from our archived forum.** * * * Hey Bob, Yes, IRC 2000 Mechanical code section 1901.1 Clearances. Freestanding or built in ranges shall have a vertical clearance above the cooking top of not less than 30 inches to unprotected combustible material. Reduced clearances are permitted in accordance with the listing and labeling of the range hoods or appliances. Then: 1901.2 Cooking appliances. Household cooking appliances shall be listed and labeled and shall be installed in accordance with the manufacturer's installation instructions. The installation shall not interfere with combustion air or accessibility for operation and servicing. Hope that is what you were looking for.. Take care, Sue Oops ![icon\_redface.gif](upload://f7DX2EWhmUfsDapWaYT3oJHMCj1.gif) just realized you wanted the IBC..sorry!! * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 24, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/6 "2004-01-24T00:00:00Z")
**Originally Posted By: rpalac** **This post was automatically imported from our archived forum.** * * * Thank’s sue, I couldn't put my finger on it. * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 25, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/7 "2004-01-25T00:00:00Z")
**Originally Posted By: jpeck** **This post was automatically imported from our archived forum.** * * * Bob P., It's 14" for many, per manufacturers specifications (which supersede code). * * * -- Jerry Peck South Florida ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [January 25, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/8 "2004-01-25T00:00:00Z")
**Originally Posted By: rpalac** **This post was automatically imported from our archived forum.** * * * Thank’s Jerry, I didn't realize it got down to 14". So much for my chili caldron....! I know that the local municipality supercedes the government as long as it is more stringent. I didn't know that manufactures could lessen a municipality code. Is that fact, I'm not sure... Bob P. * * * ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [June 28, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/9 "2004-06-28T00:00:00Z")
**Originally Posted By: jhagarty** **This post was automatically imported from our archived forum.** * * * ![icon_question.gif](https://global.discourse-cdn.com/internachi/original/3X/c/b/cb895dac76924bdba266807fa175544e4775e63a.gif) * * * – Joseph Hagarty HouseMaster / Main Line, PA [joseph.hagarty@housemaster.com](mailto:joseph.hagarty@housemaster.com) [www.householdinspector.com](http://www.householdinspector.com) Phone: 610-399-9864 Fax : 610-399-9865 HouseMaster. Home inspections. Done right. ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [June 28, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/10 "2004-06-28T00:00:00Z")
**Originally Posted By: gbeaumont** **This post was automatically imported from our archived forum.** * * * | **Joe H wrote:** | | is there any Code that requires Exhausting Provisions to be installed? | No, as a blanket statement code does not require it, however all codes state that appliances need to be installed within the manufacturers guidelines, therefore if a hood manufacyurer's instructions say that the hood needs to be vented than that's what should happen. and some of them do state that requirement, especially the higher end ones with hight CFM outputs. regards Gerry * * * -- Gerry Beaumont NACHI Education Committee e-mail : [education@nachi.org](mailto:education@nachi.org) NACHI phone 484-429-5466 Inspection Depot Education [gbeaumont@inspectiondepot.com](mailto:gbeaumont@inspectiondepot.com) "Education is a journey, not a destination" ---
**Author:** ![system](https://global.discourse-cdn.com/internachi/original/3X/d/f/df7ced6a9ca05e7c93fa949dfc12a8c10d06c887.png) [@system](https://forum.nachi.org/u/system)\ **Post date:** [June 28, 2004, 12:00am UTC](https://forum.nachi.org/t/products-of-combustion/173012/11 "2004-06-28T00:00:00Z")
**Originally Posted By: gbeaumont** **This post was automatically imported from our archived forum.** * * * Hi to all, sorry joe Got it **a$%** backwards, exhaust should be there unless no listed requirement: M1502 RANGE HOODS M1502.1 General. Range hoods shall discharge to the outdoors through a single-wall duct. The duct serving the hood shall have a smooth interior surface, shall be air tight and shall be equipped with a backdraft damper. Ducts serving range hoods shall not terminate in an attic or crawl space or areas inside the building. Exception: Where installed in accordance with the manufacturer's installation instructions, and where mechanical or natural ventilation is otherwise provided, listed and labeled ductless range hoods shall not be required to discharge to the outdoors. regards Gerry * * * -- Gerry Beaumont NACHI Education Committee e-mail : [education@nachi.org](mailto:education@nachi.org) NACHI phone 484-429-5466 Inspection Depot Education [gbeaumont@inspectiondepot.com](mailto:gbeaumont@inspectiondepot.com) "Education is a journey, not a destination"