Energy Efficient Boilers

Afue is the measure of heating equipment efficiency.

Energy efficient boilers.

Energy star certified commercial boilers have a thermal efficiency of 94 0 and a turndown ratio of 5 1. The federal energy management program femp provides acquisition guidance for commercial boilers a product category covered by femp designated efficiency requirements. This is measured by an independent laboratory and is the measured energy efficiency of the boiler including space heating and hot water. 150 for any qualified natural gas propane or oil furnace or hot water boiler.

All well maintained boilers burn their fuel very efficiently but they inevitably lose some heat in the hot gases that escape up the flue a pipe for extracting fumes and supplying fresh air to the boiler. These exceptional gas and oil boilers represent the leading edge in energy efficient products this year. New boilers must have an afue rating of at last 80 percent and high efficiency models are 90 to 98 5 percent efficient. Thermal efficiency is the ratio of the heat energy btu hr absorbed by the water to the heat energy available in the fuel burned.

The energy star most efficient 2020 designation recognizes the most efficient products among those that are energy star certified. Heating accounts for about 55 per cent of what you spend in a year on energy bills so an efficient boiler makes a big difference. It s calculated to an industry standard called sap 2009. More recently boiler efficiency has also been measured by an erp energy related product rating.

Energy efficiency upgrades and a new high efficiency heating system can often cut your fuel bills and your furnace s pollution output in half. Saving energy helps you save money on utility bills and protect the climate by reducing greenhouse gas emissions. Upgrading your furnace or boiler from 56 to 90 efficiency in an average cold climate house will save 1 5 tons of carbon dioxide emissions each year if you heat with gas or 2 5 tons if you heat with oil. Federal laws and requirements mandate that agencies purchase energy star qualified or femp designated products in all product categories covered by these programs and in any.

A nonrefundable tax credit allows taxpayers to lower their tax liability to zero but not below zero. Erp ratings work by grading products on a scale from a to g a being the best g being the worst. The higher the rating the higher the equipment cost but the lower the. 300 for any item of energy efficient building property.

Energy star certified boilers have annual fuel utilization efficiency afue ratings of 87 or greater for oil boilers and 90 or greater for gas boilers. There are only marginal differences between modern condensing boilers on this measure.