Published Specifications
Failure to be listed in the NRCan Searchable Product List
In Canada, all air-conditioning and heat-pump systems must be listed in the NRCan database. In fact, it is illegal to import or sell a unit that is not listed. At the time of this publication, March 16, 2026, the Multi MFG MAIRHP-35-CS/CS-ERV cannot be located in the NRCan Searchable Product List.
Failure to meet NRCan Minimum Efficiency Requirements
Wuxi Hammer manufactures the Multi MFG MAIRHP-35-CS/CS-ERV, which is claimed to have a nominal cooling capacity of 9,600 BTU. Under federal law (Energy Efficiency Regulations, 2016 + AHRI 210/240), any 9,600-BTU heat pump in this class must meet a SEER2 rating of 13.4 to be legally sold, installed, or used in Canada. Multi MFG misrepresents its 14.8 SEER rating, making it appear compliant; however, that rating is impossible and fake. SEER is also an incorrect and illegal rating. This alone renders the units illegal.
Fraudulent and Fake Numbers
Multi MFG MAIRHP-35-CS/CS-ERV is manufactured by Wuxi Hammer (China), and Wuxi Hammer publishes very different numbers. Wuxi Hammer claims the same unit has 12,000 BTU and a SEER of 16.95.
When Multi MFG went to publish their own numbers, apparently, they didn’t trust the fake data from Wuxi Hammer, possibly because Multi MFG could do math, and saw the numbers didn’t make sense, and also perhaps because Multi MFG strongly doubted that Wuxi Hammer, a company copying Innova’s unit, could achieve a higher capacity and better efficiency than Innova. Therefore, in all probability, Multi MFG further reduced the capacity and efficiency, hoping that at least these reduced numbers would seem real.
Multi MFG reduced the totally fake 12,000 BTU to a more reasonable 9,600 BTU and dropped the SEER from a totally fake 16.95 to a more conservative 14.8. Multi MFG did a much better job fudging the data than their manufacturer, who provided the counterfeit data by ensuring the math would work and using more realistic numbers. However, the data Multi MFG provides is still bogus.
Regulatory Violation Summary
Multi MFG — MAIRHP-35-CS & MAIRHP-35-CS-ERV
These products are illegal to distribute, specify, install, or use in the United States and Canada. Multi MFG’s published efficiency numbers are fabricated, mathematically impossible, and use three separate illegal rating metrics — publishing SEER instead of SEER2, COP instead of HSPF2, and EER instead of SEER2 — none of which have been legally acceptable since January 1, 2023. The MAIRHP-35-CS and MAIRHP-35-CS-ERV fail to meet DOE and NRCan minimum efficiency requirements under every applicable classification.
One Million Dollar Guarantee
We back the statement that the Multi MFG MAIRHP-35-CS and MAIRHP-35-CS-ERV cannot legally be sold, installed, or used in the United States and Canada with a One Million Dollar Guarantee.
Minimum Efficiency Requirements Not Met
These ratings cannot simply be invented. They must be established through testing in a genuine laboratory under correct DOE and NRCan test procedures. Multi MFG has not done this, and the data it publishes makes clear why.
Illegal Rating Metrics Uses
Publishing three separate retired or inapplicable metrics simultaneously is not a technicality or an oversight. SEER, EER, and COP were all replaced by mandatory legal requirements in 2023. Their continued use constitutes a deliberate misrepresentation of compliance status to customers, dealers, and regulators.
Faking Test Results
Selling Products That Should Not Be on the Market
Lying to Customers and Regulators
Breaking Consumer Protection and Competition Laws
