What Do I Need to Hook Up a Central Heat and Air Unit to My House?

Qualified Contractor

• Hire a qualified contractor. Without qualified contractors you may not get your central heat and air system installed properly. It is a somewhat complex job that requires people who know what they are doing, preferably those who have done it many times before. Your contractor should be able to identify all local codes and make sure that your system meets them. The contractor should also be able to install your system so that it meets efficiency standards. Hiring a licensed contractor that specializes in HVAC can add additional peace of mind because he must have significant experience and may carry a bond that protects you against any damage he does during the job.

Possible Permits

• When you have new HVAC equipment installed at your home, there is a good possibility that it requires a permit. Make sure you have the required permit to ensure you are not in violation of any local laws. Addition of ductwork, replacement installation, relocation of the outside unit and removal may require permits in your area.

Sizing Information

• You should be prepared with sizing information to make sure your installer is giving you an appropriate system for your house. Air conditioning and heating systems are sized not by physical dimensions, but by Btu per hour. A Btu is a British thermal unit and is the standard used to measure a system’s energy output. Climate conditions, house size, insulation quality and other factors will help you determine the correct size unit. If the unit is too big, it will short cycle and will not remove moisture from the air in the home properly. If it is too small, the unit will have to run too often and waste electricity.

Time

• One thing you will need to install a new central heat and air system is the intangible element of time. This is not a quick job an installer can complete in a couple of hours. If you are installing new ductwork for a completely new system then you can expect the job to last four to six days with two installers doing the job. More workers may cut the time, but it may increase the labor expense.

Money

• Central heat and air is a cost-efficient way to control your indoor climate, but you will have to shell out some bucks initially. Make sure you have enough money budgeted to get the job done right. You should expect to pay around $3,500 to $4,000 to add to an existing forced air system, and the cost may double if the system being installed is your home’s first, according to the This Old House website.