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Heating And Cooling an In-law Suite

Find out how to add a living space to your home, and how to heat and cool your new in-law suite.

Building an in-law suite is a great way to add additional living space to your property. And despite the common name, an in-law suite is simply a smaller residence, usually near the main house. It can be used as a living space for family members, or even rented out as an apartment to tenants for supplemental income. Whatever your reason for building an in-law suite, you'll want to speak to a Trane Comfort Specialist before beginning construction to make sure the following HVAC considerations are taken into account.

Square Footage

Since the square footage will be significantly smaller than a typical home, heating and cooling the in-law suite will require a less powerful system. A Trane Comfort Specialist can help you find an HVAC system configuration that will match the size and layout of your home's added living space.


During the planning stage, you'll have to decide whether ductwork will be installed, and where it will be positioned in relation to the HVAC system. If you decide not to install ductwork, ductless heating and cooling systems are a popular choice for smaller-footprint homes.


If your home's added living space will be fed by both natural gas and electric lines, you'll have a wide range of heating and cooling options for your in-law suite. However, if the residence will be electric only, your choices will be more limited. Talk to your local Trane Comfort Specialist to learn about the HVAC options available with your utility configuration.

Get an Estimate for Your In-Law Suite Heating and Cooling System

Planning the heating and cooling system is a vital part of building an in-law suite, so be sure to contact your local Trane Comfort Specialist to learn about your HVAC options before breaking ground. Choosing the right HVAC system at the outset will be much more cost effective than adding a new system to an existing structure.

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