1000E Efficiency Certification and Tax Credit Certificate

Intertek Testing Services NA, Inc. 8431 Murphy Drive Middleton, WI 53562

Tel +1-608-836-4400 Fax +1-608-831-9279 www.intertek.com

Issue Date: March 25, 2021

Letter Report No: 104565232MID-001R1

Danny Haynes HY-C Company LLC 10950 Linpage Place ST Louis, MO 63132 USA

Phone: 314-241-1214 Email: dhaynes@hy-c.com

Subject: R&D stack loss efficiency testing on model SF1000E Wood Fired Furnace

Dear Mr. Haynes,

Intertek Testing has conducted R&D testing on Model SF1000E Wood Fired Furnace to determine efficiency rating. The standards used are as follows: CSA B415.1-10 – Performance Testing of Solid-Fuel-Burning Heating Appliances. Results are as follows:

Model SF1000E

CSA B415.1 STACK LOSS RESULTS

HHV Basis

LHV Basis

74.5% 94.0%

80.2% 94.0% 85.4%

Overall Efficiency

Combustion Efficiency Heat Transfer Efficiency

79%

The testing performed on the model SF1000E Wood Fired Furnace was for R&D purposes only.

This report is for the exclusive use of Intertek’s Client and is provided pursuant to the agreement between Intertek and its Client. Intertek’s responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only the sample tested. This report by itself does not imply that the material, product or service is or has ever been under an Intertek certification program.

Version: 02 August 2017

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