Manual Calculations

Residential Manual J Calculations

Are you in the market for a new heat pump, but you aren’t sure what size would be appropriate? Or, you need someone to explain the difference in Seasonal Energy Efficiency Ratio (SEER) ratings?

You are in luck. As a member of Gulf Coast Electric Cooperative (GCEC), you have the benefit of this service for free. A Certified Market Representative from the Cooperative completes the Manual J Calculation. The Representative will go over your plans and compute the correct size heat pump based on criteria such as square footage, windows, doors, insulation, infiltration rates, etc. If it is an existing home and you would like a Manual J Calculation ran for an upgraded unit, we will gladly come to your home and collect the data.

As mentioned earlier, this service is free to all GCEC members. Should you need help, please contact our office at (800) 568-3667 or submit our contact us form.