Is your home suitable for an attic fan or a whole house fan? That is the first question that needs to be answered. This work may involve more than an HVAC contractor. It may also involve an electrical contractor and a roofing contractor. These contractors need to be able to work together to get the installation completed.

References are important. It is better not to finalize your choice before contacting references. These references need to be provided by the HVAC contractor, the electrical contractor and the roofing contractor. Call every reference and ask specific questions.

Insurance is essential. Cutting through your roof or side wall is a major operation and working with electricity in your building can be dangerous. All contractors should be covered by good insurance.

Once you have a list of possible contractors, ask for firm bids from each one. Be sure the time frames they are committed to will allow the installation to run smoothly.

A firm, signed contract will eliminate stress and is vital to the success of the project.

Be prepared to have a responsible person available to allow access to all parts of the building.