Heatmaster Residential Cooling Guide
Updated August 20, 2026
This auction ended on August 27, 2026.
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| Lot number | 17a |
| Estimate | 50.00 - 100.00 USD |
| Auction | Piddle Crick Hill Vol 67 |
| Date | August 27, 2026 at 7:01 PM CDT |
| Auction house | Piddle Crick Hill Auctions |
| Location | Maryland Heights, Missouri |
Metal wall-mount Heatmaster Residential Cooling Guide and Metalbestos Calculator by Combustion Engineering, likely from the 1960s-1970s. Durable printed metal construction.
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