In conclusion, the most environmentally friendly way to heat your home would be through the use of renewable energy sources such as solar, wind or geothermal energy. Biomass boilers and passive solar home designs are also environmentally friendly and sustainable heating options.

Bottom Line. When choosing a gas heater vs. an electric heater, there are several factors to consider that can influence your decision. Gas heaters are generally more efficient and cost-effective to operate, but they do require proper venting to avoid the risk of carbon monoxide poisoning.

Hydronic heating doesn't blow allergens and contaminants around your house or give them a place to hide in the ductwork. There is no trade-off between healthier air and a more comfortable living space.