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 Williams Montara HP003 is not listed in the NRCan Searchable Product List.
Failure to Meet NRCan Minimum Efficiency Requirements
Williams Montara HP003 has a claimed nominal cooling capacity of 8,000 BTU. Under federal law, any 8,000 BTU heat pump in this class must meet a 13.4 SEER2 or 9.3 CEER minimum to be legally sold, installed, or used in Canada. Williams lies when it publishes a 13.9 SEER2 rating, making it seem as if it complies; however, that 13.9 SEER2 rating is fake. This alone renders the units illegal.
Fraudulent and Fake Numbers
The Williams Montara HP003 is manufactured by Zymbo (China), and Zymbo does not publish an SEER2 rating in any of its documentation. However, it is worth noting that the manufacturer, Zymbo, publishes very different numbers.
Zymbo claims the same unit, which they call Clima Puro, has a higher capacity of 8,831 BTU and a much higher efficiency of 10.6 EER. What’s even more fascinating is that Zymbo’s math doesn’t work.
Here’s what Zymbo publishes:
In Cooling
Using Zymbo’s own watt input: 8,831 ÷ 750 = EER 11.77. Yet Zymbo, the manufacturer, publishes an EER of 10.6. In heating, Zymbo still fails basic math.
In Heating
Using their own watt input: 8,800 ÷ 3.412 (BTU to W) ÷ 700 = 3.68 COP. Yet, Zymbo publishes 3.35 COP. Zymbo is playing with the numbers. The numbers they published looked too good to be true, so they simply “dumbed down” the efficiency and presented reduced efficiency values.
When Williams went to publish their own numbers, the company did not rely on the fabricated data provided by Zymbo. This may be because Williams reviewed the figures and found them mathematically inconsistent, or because it questioned whether Zymbo, a company whose unit appears to be a copycat of Innova’s design, doubted that their unit could achieve higher capacity and better efficiency than Innova. As a result, it’s plausible that Williams further reduced the reported capacity and efficiency to present values that appeared more realistic.
Williams adjusted the 8,831 BTU to 8,000 BTU and dropped the EER from 10.6 to 8.89. In doing so, Williams did a much better job producing values that appear more consistent than the original figures, suggesting an attempt to produce numbers within a plausible range. However, the resulting data does not align with expected performance levels. The data Williams provides is unreliable and undeniably false.
When tested in a lab, Montara HP003 will not produce 8,000 BTU with a 13.9 SEER2 rating as claimed. The numbers they claim are fake.
Regulatory Violation Summary
Williams — Montara HP003
This product is illegal to distribute, specify, install, or use in the United States and Canada. Williams’ published cooling and heating efficiency numbers are fabricated and fail to meet DOE and NRCan minimum efficiency requirements. The Montara HP003 further uses outdated and illegal rating metrics — publishing SEER instead of the legally required SEER2, and COP instead of the legally required HSPF2 — metrics that have not been legally acceptable since January 1, 2023.
One Million Dollar Guarantee
We back the statement that the Williams Montara HP003 cannot legally be sold, installed, or used in the United States 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 the correct DOE and NRCan test procedures. Williams has not done this, and the data it publishes makes clear why.
Illegal Rating Metrics Used
Publishing retired or inapplicable metrics is not a technicality. SEER and COP were replaced by mandatory legal requirements in 2023. Their continued use is a deliberate misrepresentation of compliance status.
Faking Test Results
Selling Products That Should Not Be on the Market
Lying to Customers and Regulators
Breaking Consumer Protection and Competition Laws
