KOHLER air-cooled home standby generators

The product pages show no certification mark in their visible text, so this table takes the marks from the spec sheets. The 10RESV, 12RESV and 12RES sheets print cUL/UL 2200, the 14RCA and 20RCA sheets print UL 2200/cUL, and the 26RCA sheet prints cULus. The c in each of those marks stands for Canada, so every row here reads as listed for Canada. The sheets also give one phone line for sales and service in the US and Canada. Before ordering, we confirm the exact unit with you.

The RCA spec sheets recommend their cold weather kit below 0 °C and a battery heater below minus 17 °C, and they say not to fit the carburetor heater together with the kit. The 10RESV and 12RESV sheet lists no cold weather kit; it recommends a carburetor heater for starting below 0 °C. The 12RES sheet does the same and also lists a battery heater. That is why the cold weather column says yes for the three RCA units and not published for the other three.

For a house on the gas main, size the unit from its natural gas rating: the 20RCA sheet gives 20 kW on propane and 18 kW on natural gas. A licensed gas fitter sizes and runs the gas line. Connecting a generator permanently means notifying the Electrical Safety Authority (ESA) of the work, and the transfer switch keeps generator power off the utility's lines. The base units come without a switch, so its rating is settled at the site visit, along with whether it covers the whole panel or a set of circuits.

The Electrical Safety Authority (ESA) notification of work is filed before the work starts. When the installation is done, ESA inspects it and issues a Certificate of Acceptance once it passes. Where the unit burns natural gas or propane, a licensed gas fitter makes the gas connection. Where a meter or a service entrance switch is involved, the local utility does its part of the work.