Boiler sizing depends on your home’s square footage, insulation quality, number of zones, and hot water demands. Most medium-sized Malden homes (1,500-2,500 square feet) work well with 24kw to 35kw boilers, which provide consistent heating and efficient hot water production.Older Malden homes often have unique heating challenges due to original construction methods, room additions, and varying insulation levels. We perform detailed heat loss calculations during our assessment, considering factors like window types, insulation quality, and your home’s exposure to winter winds.Oversized boilers waste energy and cycle on and off frequently, while undersized units struggle to maintain comfortable temperatures during peak heating demands. Our sizing calculations ensure your new boiler matches your home’s actual heating needs for optimal efficiency and comfort.