Where a furnace and a water heater can go is determined mostly by the foundation the house sits on, and after that by the working clearance each appliance manufacturer and the code require in front of it. Combustion air, flue routing and the clear space for service access are what make these rooms bigger than the equipment in them. The templates here cover a mechanical room, a basement mechanical room, and a mechanical corner inside a garage. Each draws the service clearance in front of every appliance as a zone, because that is the dimension most often lost when a plan is tightened.
Fuel-burning appliances are drawn only where the code permits them; a sleeping room or a bathroom is not one of those places.
3 templates, 48 to 80 sf. DXF R2018, drawn in inches. Free, no signup.
DWG (R2000, converted from the DXF and round-trip verified). PNG is the plan-view render.
A room holding the heating appliance and the water heater together. Each needs its own 30 by 30 in working space, and the furnace needs a return-air path, which is the requirement a closet plan most often leaves out.
The sheet carries the fixture clearances as drawn geometry on their own layer, with the dimension strings and room notes outside the walls.
| Interior (W x D) | 8'-0" x 10'-0" |
|---|---|
| Floor area | 80 sf |
| Overall, outside face of wall | 8'-9" x 10'-9" |
| Workable range for this room type | 35 to 150 sf |
| Units | inches |
Every one is a block from the CADdillo library, inserted — not drawn for this sheet. Linked where the block has a library page.
DXF (81 KB) DWG (27 KB) PNG (84 KB)
"Verified" means the citation was checked against the source text we hold. "Unverified" means it has not been, and should be read as a pointer to look the section up rather than as a quotation of it.
20 of 76 checks graded, zero defects. This template is published because it graded clean.
A single room on its own sheet is not a whole building, so the checks that grade a floor plate — exit counts, circulation share, fixture counts against an occupant load — have no subject here. They are listed rather than counted as passes.
A room holding the heating appliance and the water heater together. Each needs its own 30 by 30 in working space, and the furnace needs a return-air path, which is the requirement a closet plan most often leaves out.
The sheet carries the fixture clearances as drawn geometry on their own layer, with the dimension strings and room notes outside the walls.
| Interior (W x D) | 6'-0" x 8'-0" |
|---|---|
| Floor area | 48 sf |
| Overall, outside face of wall | 6'-9" x 8'-10" |
| Workable range for this room type | 35 to 150 sf |
| Units | inches |
Every one is a block from the CADdillo library, inserted — not drawn for this sheet. Linked where the block has a library page.
DXF (80 KB) DWG (27 KB) PNG (104 KB)
"Verified" means the citation was checked against the source text we hold. "Unverified" means it has not been, and should be read as a pointer to look the section up rather than as a quotation of it.
20 of 76 checks graded, zero defects. This template is published because it graded clean.
A single room on its own sheet is not a whole building, so the checks that grade a floor plate — exit counts, circulation share, fixture counts against an occupant load — have no subject here. They are listed rather than counted as passes.
A room holding the heating appliance and the water heater together. Each needs its own 30 by 30 in working space, and the furnace needs a return-air path, which is the requirement a closet plan most often leaves out.
The sheet carries the fixture clearances as drawn geometry on their own layer, with the dimension strings and room notes outside the walls.
| Interior (W x D) | 6'-0" x 8'-0" |
|---|---|
| Floor area | 48 sf |
| Overall, outside face of wall | 6'-10" x 8'-10" |
| Workable range for this room type | 35 to 150 sf |
| Units | inches |
Every one is a block from the CADdillo library, inserted — not drawn for this sheet. Linked where the block has a library page.
DXF (80 KB) DWG (27 KB) PNG (120 KB)
"Verified" means the citation was checked against the source text we hold. "Unverified" means it has not been, and should be read as a pointer to look the section up rather than as a quotation of it.
17 of 76 checks graded, zero defects. This template is published because it graded clean.
A single room on its own sheet is not a whole building, so the checks that grade a floor plate — exit counts, circulation share, fixture counts against an occupant load — have no subject here. They are listed rather than counted as passes.
Code sections are cited for drafting context only. A room drawn to a dimension in a model code is not a compliance determination: adoption, amendment and interpretation are local, and the governing edition in your jurisdiction may differ from the one cited. Nothing here is stamped or sealed. Verify against the code your project is permitted under and the actual specified products. See the license and terms.
