Information Regarding Merrimack Valley Massachusetts High Gas Pressure Incident


Rinnai America Corporation is providing this guidance to our distributors, installing contractors and consumers who have products that were impacted by the high gas pressure incident in the Merrimack Valley, Massachusetts area.  Although this incident was in no way caused by or related to Rinnai’s product quality, it is Rinnai America Corporation’s policy to put our customer first and be proactive in providing any information that could potentially impact the performance of the products we manufacture and distribute. 
Rinnai products are certified by the Canadian Standards Association (CSA) in accordance with the following product specific standards:

  • Tankless water heaters – ANSI Z21.10.3
  • Boilers, gas-fired – ANSI Z21.13
  • Direct vent wall furnaces – ANSI Z21.86
  • Unvented space heater – ANSI Z21.11.2
  • Rice Cooker – ANSI Z83.11 

All of these standards and products included are designed to operate at a maximum of 14” W.C. (0.5 psi).  Rinnai recommends that if you have one of the above products installed in the North Boston area that may have been affected by the high gas pressure event you or the customer should contact Columbia Gas to determine if the product was exposed to gas pressures exceeding 14“ W.C. (0.5 psi). 
Any products that have been exposed to gas pressures exceeding 14” W.C. (0.5 psi) should not be operated and the product should be replaced by a licensed professional. 


Media Contact:

Gina Page, hfa

(330) 319-6909,

About Rinnai

Rinnai America Corporation, a subsidiary of Rinnai Corporation in Nagoya, Japan, was established in 1974 and is headquartered in Peachtree City, Ga. Rinnai Corporation manufactures gas appliances including tankless water heaters, a wide range of kitchen appliances and heating and air conditioning units. As the technology leader in its industry, Rinnai is the largest gas appliance manufacturer in Japan and is the number-one selling brand of tankless gas water heaters in the United States and Canada. Annual corporate revenues, including those of its subsidiaries, are in excess of $3.1 billion. With a global perspective to create 21st-century products for the home and business, Rinnai Corporation commits itself to safety and the pursuit of comfortable lifestyles. For more information about Rinnai’s entire product line, visit