The ACEEE strongly recommends a condensing furnace (AFUE 90% or higher), unless you live in a warm climate (in this case, you may want to consider retrofitting your system with a heat pump instead).
Did you know that all of HTP's high efficiency units are condensing? All of HTP products ranging from the wide selection of heating products to the growing selection of solar products are based in high efficiency. HTP introduced modulating/condensing technology with the introduction of the Munchkin Boiler, the first of its kind to enter the market. Since the Munchkin, HTP has challenged the heating industry. Today, HTP offers space heating equipment that suits every need with a full line of commercial, residential and combination products. Water heating products include the popular and well known SuperStor Indirect storage tank as well as the 316L Stainless Steel Phoenix water heater. The success of these products prove that HTP is not slowing down any time soon. Through 2010 to today, HTP has released over 20 new products, including the Elite FT boiler that features a unique fire tube burner. Check out all of our high efficiency units on our website and don't forget to follow us!