5 Sources of Heat Gain That May Be Costing You

You've had your air conditioning system cleaned and inspected by a qualified professional, and it's running efficiently. Now you can enjoy the savings, right? Unfortunately, there may be multiple sources of heat gain in your facility that continue to put the heat on your summer energy bills. It's important to identify sources of heat gain and take steps to mitigate them.

1. Solar radiation

Sunlight streaming through windows helps create a cozy indoor atmosphere and — coupled with daylighting controls — it can reduce lighting costs. However, solar radiation entering through windows can contribute to heat gain. To reduce such heat gain, make strategic use of shading devices, such as blinds or window films. Also, consider installing reflective or low-emissivity (low-e) windows that help block heat from entering the building.

2. Equipment and appliances

Computers, office equipment, servers, cooking appliances and production equipment generate heat when in use. The cumulative effect of multiple devices can add up and increase the overall heat load in the space. Minimize heat gain by ensuring proper ventilation and turning equipment down or off during idle periods. Implement power management settings on computers and office equipment. Newer energy-efficient equipment — such as induction cooktops — produce less heat.

3. Lighting

Traditional incandescent and halogen lights emit a substantial amount of heat. If you're using those types of lights throughout your facility, the extra heat can really add up. Switch to energy-efficient LEDs, which are cool to the touch and produce less heat. Add controls to optimize savings by eliminating energy waste lighting empty spaces.

4. Insufficient insulation

Poor insulation in your building envelope — walls, windows and roof — can allow heat from outdoors to penetrate the building. Proper insulation can significantly reduce heat transfer, reducing air conditioning costs and increasing comfort. Contact a qualified insulation contractor to inspect your facility to ensure that it's properly insulated according to energy efficiency standards.

5. People

Occupants in a building generate body heat, especially in crowded spaces such as offices, retail stores or restaurants. The more people present, the more heat they generate and the more cooling is required to keep them comfortable. Use building automation controls to adjust temperatures based on occupancy or time of day. Consider temperature zones based on activity. An office space, for example, may be much more crowded than a warehouse.

By taking steps to reduce heat gain in your facility, you can reduce the strain on your air conditioning system, increase comfort and realize some cool summer savings.