# First time for this

**URL:** <https://forum.nachi.org/t/first-time-for-this/96469>\
**Category:** Inspecting HVAC Systems\
**Created:** [May 9, 2015, 2:50pm UTC](https://forum.nachi.org/t/first-time-for-this/96469 "2015-05-09T14:50:13Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![cadalian](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/cadalian/32/171368_2.png) [@cadalian](https://forum.nachi.org/u/cadalian)\
**Post date:** [May 9, 2015, 2:50pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/1 "2015-05-09T14:50:13Z")

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Came across a very old looking furnace yesterday. Believe it was converted to gas forced hit air. Anything special I should know about this, first time I’ve come across this.

 ![image.jpg](https://global.discourse-cdn.com/internachi/original/3X/c/2/c2f94339c180ef16658e0f931fb17e335f7369f7.jpeg)

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**Author:** ![cadalian](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/cadalian/32/171368_2.png) [@cadalian](https://forum.nachi.org/u/cadalian)\
**Post date:** [May 9, 2015, 2:51pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/2 "2015-05-09T14:51:45Z")

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Another photo - not sure how to do more than 1 at a time

 ![image.jpg](https://global.discourse-cdn.com/internachi/original/3X/0/6/06734949fc076c266ca804616b082de9a2065823.jpeg)

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**Author:** ![jmckee](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jmckee/32/211009_2.png) [@jmckee](https://forum.nachi.org/u/jmckee)\
**Post date:** [May 9, 2015, 2:59pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/3 "2015-05-09T14:59:23Z")

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that is a very old time gravity conversion…very inefficient …burns a lot of gas for the heat You get…

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**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\
**Post date:** [May 9, 2015, 3:17pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/4 "2015-05-09T15:17:44Z")

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> [@jmckee](#):
>
> that is a very old time gravity conversion…very inefficient …burns a lot of gas for the heat You get…

I think Jim’s got it…🙂

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**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\
**Post date:** [May 9, 2015, 3:20pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/5 "2015-05-09T15:20:43Z")

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> [@cadalian](#):
>
> Another photo - **not sure how to do more than 1 at a time**

When you click the yellow square with the mountains in it, you can choose the file you want and upload it. Then, do the same process again. I believe the limit per post is 5 pics.

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**Author:** ![cadalian](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/cadalian/32/171368_2.png) [@cadalian](https://forum.nachi.org/u/cadalian)\
**Post date:** [May 9, 2015, 3:46pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/6 "2015-05-09T15:46:37Z")

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Thanks. Yes it looks amazingly inefficient. The size of the flame is amazing!!

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**Author:** ![jfrederick](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jfrederick/32/58314_2.png) [@jfrederick](https://forum.nachi.org/u/jfrederick)\
**Post date:** [May 9, 2015, 4:25pm UTC](https://forum.nachi.org/t/first-time-for-this/96469/7 "2015-05-09T16:25:06Z")

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Break out the marshmallows and hot dogs…