Several Peerless boiler products have been certified as Energy Star compliant by the Environmental Protection Agency, indicating that these products have less potential environmental impact than similar appliances. Energy Star units use approximately 10 percent less energy than standard boilers, leading to lower emissions and lower fuel use.
Three oil-fired and three gas-fired Pinnacle boiler product lines have been certified as compliant with Energy Star standards as of 2015. The oil-fired units include the Series WB90, the Pinnacle Oil Boiler and certain models of the Series WB/WBV line. Gas-fired units with Energy Star certification include the 92-2 model of the Cast 92 line, residential versions of the PUREFIRE gas-fired condensing boiler and the Combi 160 line. Both gas and oil units are estimated to use 10 percent less energy than comparable products of their type.
Gas and oil-fired Peerless boilers that use less energy reduce their impact on the environment largely by reducing emissions of carbon dioxide and nitric oxide into the atmosphere. These gases are known greenhouse gases that contribute to global warming. Burning less fuel also helps to conserve limited resources of fossil fuel. As fossil fuel extraction techniques, such as fracking, have potentially large environmental impacts, reducing consumption of these fuels through efficiency has an impact on improving the environment as well.