Can I use an Instantaneous or Traditional Domestic Hot Water Heaters as a Boiler for space heat of my house?
Heatmeister disapproves of such installation for various reasons: use the right tool for the job; boilers are designed to heat your home; you can mow your lawn with a line trimmer however a lawn mower will do a better job. Traditional gas hot water heaters are at best 50% to 62% efficient and instantaneous are at best 82% whereas the latest high efficiency boilers are approximately 95% efficient and modulates based on outside temperatures. Further, instantaneous water heaters require frequent maintenance which reduces the overall efficiency of this product. Lastly, Glycol (anti-freeze additive to the heating distribution lines) increases the viscosity which inhibits the circulatory ability of the system and can result in serious problems with “Instantaneous” boiler installs. Heating systems that are using an instantaneous domestic hot water systems for their space heating have encountered many problems and many of our owners we represent have removed such systems due to it unreliabilit
