Home Energy Audits: 7 Key Things to Know

7 min

Home Energy Audits: 7 Key Things to Know

Energy efficiency is paramount for a sustainable future. A home energy audit is an essential first step in this journey, helping us understand how much energy our homes consume and how we can improve their efficiency. If you're considering a home energy audit, here are seven key things to be aware of:

1. What is a Home Energy Audit?

A home energy audit is a process that evaluates your property's energy consumption. It's like a health check for your home's energy usage, providing insights into how you can improve energy efficiency, save money, and reduce your environmental impact.

The primary purpose of a home energy audit is to identify areas where energy is being wasted or used inefficiently and to recommend measures for improving energy efficiency, reducing energy consumption, and lowering bills.

Key components and aspects of a home energy audit include:

Inspection of the Building Envelope: This involves assessing the insulation levels, air sealing, and condition of walls, floors, ceilings, windows, doors, and the roof to identify areas where air leakage and thermal inefficiencies may occur.

Assessment of Heating and Cooling Systems: The audit evaluates the efficiency and condition of the heating, ventilation, and air conditioning (HVAC) systems. This includes checking filters, ductwork, and the overall performance of the furnace, boiler, or heat pump.

Review of Appliances and Lighting: Energy auditors examine the efficiency of household appliances, lighting fixtures, and electronics to determine if there are opportunities to upgrade to more energy-efficient models.

Analysis of Energy Bills: The auditor reviews past utility bills to understand energy consumption patterns and identify areas of concern, such as seasonal spikes in energy usage.

Blower Door Test: A blower door test is often conducted to measure the extent of air leaks in the home. This test involves sealing off the house and using a powerful fan to depressurize or pressurize the indoor space, which helps locate leaks.

Thermal Imaging: Infrared thermography may be used to detect temperature variations in the building's envelope, highlighting areas of poor insulation or air leakage.

Combustion Safety Testing: For homes with combustion appliances (e.g., gas furnaces, water heaters), auditors check for safe operation and proper ventilation to prevent carbon monoxide hazards.

Energy Efficiency Recommendations: Based on the findings, auditors provide a list of recommended energy-saving measures, such as adding insulation, sealing air leaks, upgrading windows, improving HVAC systems, or installing energy-efficient lighting and appliances.

Return on Investment (ROI) Analysis: Auditors may estimate the potential savings from implementing the recommended improvements and calculate the payback period to help homeowners prioritize upgrades.

Documentation: A detailed report is typically provided to homeowners, summarizing the audit findings, recommendations, and estimated cost savings.

Home energy audits are valuable tools for homeowners interested in reducing energy consumption, lowering energy bills, increasing home comfort, and reducing their environmental footprint. They can also help homeowners qualify for energy efficiency incentives and rebates offered by utilities or government programs. Now let’s take a look at an overview of the audit process.

2. The Audit Process

An energy audit generally consists of several steps:

Pre-Audit Survey: You provide the auditor with details about your home, including its age, size, and any known issues.

Site Inspection: The auditor visits your home, inspecting the property for energy efficiency and potential solar panel placement.

Data Analysis: Using the collected data, the auditor estimates your home's energy consumption and potential solar power generation.

Report Generation: The auditor presents you with a report containing your home's energy usage and recommended improvements.

3. Comprehensive Energy Solutions

A thorough energy audit should provide a set of solutions tailored to your home. These could be as minor as changing to energy-saving light bulbs or as major as investing in solar panels or upgrading your insulation. Keep in mind that while some solutions might require significant investment upfront, the long-term savings can be substantial. Implementing these recommendations also enhances the comfort and livability of your home, while significantly reducing your carbon footprint.

Here’s a list that will help you prioritize your energy efficiency upgrades.

Locate Air Leaks:

  • Identify drafts in your home, which can lead to energy savings of 10% to 20% annually.

Consider Ventilation:

  • When sealing your home, be cautious of indoor air pollution and combustion appliance backdrafts.
  • Ensure combustion appliances have adequate air supply to prevent dangerous situations.
  • Consult professionals if you're uncertain about ventilation issues.

Check Insulation Levels:

  • Assess insulation levels in your home, especially in the attic, walls, and floors.
  • Seal gaps, insulate attic hatches, and install vapor barriers where needed.
  • Maintain proper attic ventilation and insulate exterior attic vents.

Inspect Heating and Cooling Equipment:

  • Schedule annual inspections and maintenance for your heating and cooling systems.
  • Replace filters regularly and consider upgrading to energy-efficient units if older systems are inefficient.
  • Inspect ductwork for leaks and insulate ducts and pipes in unheated spaces.


  • Lighting accounts for about 10% of your electric bill, so replace inefficient bulbs with ENERGY STAR LEDs or energy-saving incandescents.
  • Consider lumens and the Lighting Facts label when shopping for bulbs.
  • Explore lighting controls, such as sensors and timers, to reduce energy use.

Appliances and Electronics:

  • Assess the energy use of your appliances and electronics and consider more efficient options.
  • Reduce energy consumption by unplugging devices not in use, adjusting settings, or upgrading to energy-efficient products.
  • Explore smart home energy management systems for better control.

Whole-House Plan:

  • Create a plan based on your energy spending, areas of energy loss, payback period for efficiency investments, and additional benefits.
  • Consider your long-term homeownership goals, budget, maintenance time, and whether you can DIY or need professional help.

By following these steps, you can improve your home's energy efficiency, save on energy costs, and contribute to a more sustainable living environment

4. The Expertise of the Auditor

Ensure the auditor has the necessary qualifications and experience. A professional auditor will not only inspect your home but also educate you about energy efficiency. They'll explain their findings and suggest practical solutions for your home's specific needs.

5. Benefits of a Home Energy Audit

A home energy audit provides several benefits:

Reduced Energy Costs: By identifying where your home loses energy, you can implement changes that reduce your energy bills.

Environmental Stewardship: Less energy consumption means less reliance on fossil fuels, contributing to a healthier planet.

Increased Property Value: Homes with energy-efficient features often command higher market prices.

Access to Incentives: You might qualify for government incentives when you implement energy-saving improvements.

6. Cost and Potential Savings

The cost of an energy audit can vary, but the potential savings can significantly outweigh the costs. Here's a more detailed look at the potential expenses and savings:

AspectSmall HomeAverage HomeLarge Home
Energy Audit Cost$100 - $200$200 - $400$400 - $500
Potential Monthly Savings$10 - $40$40 - $70$70 - $100
Potential Annual Savings$120 - $480$480 - $840$840 - $1200

This table shows how savings can scale with the size of the home, making an energy audit a sound investment.

7. Timing for an Audit

Timing is an essential factor when considering an energy audit. If you are experiencing high energy bills, an audit can help identify where you're losing energy. If you're considering investing in renewable energy, such as solar panels, an audit can give you a clear understanding of your home's energy consumption and the potential benefits of solar power. If you're planning to sell your home, an audit can significantly enhance your home's appeal to eco-conscious buyers and potentially increase its market value

To Sum Up

In essence, a home energy audit is an invaluable tool for energy efficiency. By understanding your home's current energy consumption and potential for improvement, an audit paves the way for substantial cost savings and environmental stewardship. It's a worthwhile investment for every homeowner looking to create a greener, more cost-effective home. The right time for an audit is now, regardless of whether you're battling high bills, planning energy-efficient upgrades, or preparing to sell. Embrace the audit, and let it guide you on your path to a sustainable futur

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