Gas-fired wall-mounted condensing boiler with modulating stainless steel cylinder burner and inox-radial heat exchanger surface rated input: to mbh for residential homes and apartment units, new buildings and retrofits. Effective and environmentally friendly! Powerhouse installs boilers, especially in nj, pa, de and ny and has the experience to ensure your boiler installation meets all local codes. Fantastic! communicated with us throughout the day until the plumber arrived he was efficient.