An energy use survey, also known as an energy audit, is a thorough examination of how energy is consumed within a building or facility. Its primary goal is to identify areas where energy is being wasted or used inefficiently. By understanding these patterns, you can take informed steps to reduce your energy consumption, lower utility bills, and contribute to a more sustainable environment.
This guide will walk you through the importance of energy use surveys, different types available, and practical steps to conduct your own assessment, helping you uncover opportunities for significant savings and improved comfort.
What is an Energy Use Survey?
An energy use survey is a systematic process of inspecting and analyzing a building’s energy consumption. It involves collecting data on energy usage, evaluating the efficiency of various systems and appliances, and identifying potential areas for improvement. This assessment can range from a simple walk-through inspection to a comprehensive analysis using specialized diagnostic tools.
The core purpose is to pinpoint exactly where and how energy is being used, or often, misused. This understanding empowers homeowners and businesses to make targeted changes that lead to reduced energy waste and cost savings.
Why Is an Energy Use Survey Important?
Conducting an energy use survey offers several significant benefits, making it a valuable exercise for anyone looking to optimize their energy consumption.
- Save Money: The most immediate and tangible benefit is the potential for lower utility bills. Identifying and fixing inefficiencies directly translates to less money spent on electricity, gas, and other energy sources.
- Increase Comfort: Addressing issues like drafts, poor insulation, or inefficient heating and cooling systems can significantly improve the comfort levels within your home or workplace, ensuring consistent temperatures year-round.
- Reduce Environmental Impact: Lowering your energy consumption means reducing your carbon footprint. This contributes to mitigating climate change and promoting a healthier planet.
- Enhance Property Value: Energy-efficient homes are often more attractive to potential buyers. Improvements identified by a survey, such as upgraded insulation or efficient windows, can increase your property’s market value.
- Identify Hidden Problems: Surveys can uncover underlying issues like leaky ductwork, failing appliances, or inadequate insulation that might otherwise go unnoticed, preventing costly repairs down the line.
Types of Energy Use Surveys
Energy use surveys can vary in depth and complexity, depending on your needs and budget. Understanding the different types helps you choose the right approach.
DIY Home Energy Audit
A do-it-yourself energy audit is a basic self-assessment you can perform without professional help. It involves visually inspecting your home, reviewing utility bills, and conducting simple tests to identify obvious areas of energy waste. This is a great starting point for homeowners to gain initial insights.
Professional Home Energy Audit
A professional energy audit is conducted by certified energy auditors who use specialized equipment and expertise. These audits provide a much more detailed analysis of your home’s energy performance, identifying subtle inefficiencies that a DIY approach might miss. They typically offer a comprehensive report with specific, actionable recommendations.
Commercial and Industrial Energy Audits
For businesses, factories, and larger facilities, commercial and industrial energy audits are tailored to complex operational needs. These audits focus on large-scale equipment, production processes, and building systems to identify significant energy-saving opportunities that can impact operational costs and environmental compliance.
How to Conduct a DIY Home Energy Use Survey
You can start making a difference in your energy consumption right away with a simple DIY home energy use survey. Here’s how to do it:
Step 1: Gather Information
Before you begin your physical inspection, collect some data to establish a baseline.
- Review Utility Bills: Look at your electricity, gas, and water bills from the past 12-24 months. Note seasonal variations and peak usage. This helps identify when and how much energy you use.
- List Appliances and Electronics: Make a list of all major appliances (refrigerator, oven, washer, dryer, dishwasher, HVAC system) and electronics (TVs, computers, gaming consoles). Note their age and any Energy Star ratings.
- Consider Daily Habits: Think about your family’s routines. How often are lights left on? Are thermostats adjusted regularly? Do you unplug chargers when not in use?
Step 2: Conduct a Walk-Through Inspection
Systematically go through your home, inside and out, making notes of anything that seems inefficient.
Exterior Inspection
- Windows and Doors: Check for visible gaps, cracks, or drafts around frames. Inspect weatherstripping and caulking for wear and tear.
- Insulation: Look at the condition of attic insulation (if accessible) and exterior wall insulation. Are there any signs of moisture or damage?
- Roof and Foundation: Check for cracks or openings where air could escape or enter.
Interior Inspection
- Lighting: Note the types of light bulbs used in each fixture. Are they incandescent, CFL, or LED?
- Appliances: Inspect seals on refrigerators and freezers. Check if your dishwasher or washing machine uses hot water efficiently.
- HVAC System: Examine air filters – are they clean? Check ductwork for visible leaks or damage. Note your thermostat settings.
- Water Heater: Check its temperature setting (should be around 120°F/49°C). Is it insulated, especially if it’s an older model?
- Electronics: Identify devices that are always plugged in, even when not in use (phantom loads).
Step 3: Perform Simple Tests
A few easy tests can reveal significant energy leaks.
- Draft Test: On a breezy day, hold an incense stick or a thin piece of tissue paper around windows, doors, electrical outlets, and plumbing penetrations. If the smoke wavers or the tissue moves, you have a draft.
- Insulation Check: In the attic, measure the depth of your insulation. Many homes could benefit from more. For walls, if you have uninsulated outlets, you might feel cold air coming through.
- Phantom Load Check: If you have a device like a Kill-A-Watt meter, use it to measure the standby power draw of electronics. Otherwise, simply observe which devices have indicator lights or feel warm when off – these are likely drawing power.
Step 4: Document Your Findings
Keep a detailed checklist or notes of your observations. Prioritize issues by potential impact and ease of fix. For example, a major draft is likely a higher priority than a single incandescent bulb.
What a Professional Energy Audit Involves
While a DIY audit is a great start, a professional energy audit offers a deeper, more precise understanding of your energy consumption. Certified auditors use advanced tools and techniques:
- Blower Door Test: This test depressurizes your home to measure air leakage, revealing exactly where drafts are occurring.
- Thermographic Inspection: Using an infrared camera, auditors can visualize heat loss or gain through walls, ceilings, and windows, identifying areas with inadequate insulation or air leaks.
- Combustion Safety Testing: For homes with gas furnaces or water heaters, auditors check for proper ventilation and potential carbon monoxide leaks.
- Detailed Report: You’ll receive a comprehensive report outlining findings, prioritized recommendations for improvements, and estimated cost savings.
Interpreting Your Survey Results and Taking Action
Once you have gathered your findings, whether from a DIY or professional audit, the next step is to act on the information.
Prioritize Recommendations
Focus on improvements that offer the highest return on investment (ROI) or address the most significant energy losses first. For example, sealing major drafts and adding attic insulation often provide quick and substantial savings.
Implement Changes
Start with simple, low-cost fixes:
- Seal Air Leaks: Use caulk for small cracks and gaps, and weatherstripping for doors and windows.
- Upgrade Lighting: Replace incandescent bulbs with energy-efficient LEDs.
- Adjust Thermostat Settings: Program your thermostat to adjust temperatures when you’re away or asleep.
- Unplug Electronics: Disconnect chargers and electronics when not in use to eliminate phantom loads.
- Maintain HVAC: Regularly clean or replace air filters. Schedule annual professional maintenance.
For larger projects, such as upgrading insulation, replacing old windows, or installing a new high-efficiency HVAC system, research available incentives, rebates, or financing options from local utilities or government programs.
Ongoing Monitoring and Maintenance
Energy efficiency is not a one-time fix but an ongoing process. Continue to monitor your utility bills for changes after implementing improvements. Regularly check weatherstripping, caulking, and appliance seals for wear. Small, consistent efforts can sustain your energy savings over time.
Conclusion
An energy use survey is a powerful tool for understanding and taking control of your energy consumption. Whether you opt for a simple DIY inspection or a comprehensive professional audit, the insights gained can lead to significant savings on utility bills, increased comfort, and a reduced environmental footprint. By identifying inefficiencies and implementing targeted improvements, you can make your home or business more energy-efficient and sustainable. Start your energy use survey today and unlock the potential for a more efficient tomorrow.
For more ways to save energy and improve your home, explore our articles on reducing your electricity bill or the benefits of smart thermostats.