# Adding an exterior air source

**URL:** <https://forums.firespeaking.com/t/adding-an-exterior-air-source/172>\
**Category:** Masonry Heater Design\
**Created:** [August 3, 2023, 3:13pm UTC](https://forums.firespeaking.com/t/adding-an-exterior-air-source/172 "2023-08-03T15:13:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Doug](https://avatars.discourse-cdn.com/v4/letter/d/dbc845/32.png) [@Doug](https://forums.firespeaking.com/u/Doug)\
**Post date:** [August 3, 2023, 3:13pm UTC](https://forums.firespeaking.com/t/adding-an-exterior-air-source/172/1 "2023-08-03T15:13:09Z")

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I’m new to masonry stove design. My wife and I are building a Passive Off-grid home just outside North Bay, On (4 hrs north of Toronto) on 8 acres. The home will be well insulated and very tight meaning the stove must draw air from outside the building. A hot water buffer tank heated by solar, propane and the wood stove is used to heat our domestic hot water and for rad heating.

What I’m looking for is a small masonry cook stove with the following;

- can accommodate an exterior air source
- can accommodate piping for heating water in the buffer tank
- firebox door with a viewing window
- oven

I’ve looked at the Walker stove but the design doesn’t appear to allow for an exterior air source.  
Any suggestion would be appreciated.  
Doug