---
title: "Residential buildings"
date: 2016-06-27
author: "Kate"
featured_image: "https://aosmithinternational.com/wp-content/uploads/2025/06/Indirect-Solar-system-ITS-Residential-A.O.-Smith-1.png"
---

# Residential buildings

The ITS is fitted with 2 coils. In the solar alignment the upper coil is connected to a water heater or boiler. This water heater or boiler provides the pre- or after heating if the solar contribution is not sufficient. The lower coil of the ITS transfers the heat from the collectors. This indirect solar system has a high comfort level because the water heater or boiler as well as the collectors transfer the heat to the ITS.

An ITS solar system is a very suitable application in residential and small commercial properties. This system will provide the needed hot water in a very energy efficient manner.