Top-rated energy efficiency auditors.

Get matched with top energy efficiency auditors in Gardner, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Gardner, IL?

Select your specific project to find the pro for you.

Verified Reviews for Energy Efficiency Auditing pros in Gardner, IL

*The Angi rating for Energy Efficiency Auditing companies in Gardner, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

*The HomeAdvisor rating for Energy Efficiency Auditing companies in Gardner, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

Last update on January 26, 2026

Find Energy efficiency auditors in Gardner

Avatar for Hunts Energy Solution Services
Hunts Energy Solution Services
5.0(
4
)
Energy Audit - For BusinessHome Energy Audit

Serving Gardner, IL and surrounding areas

In business since 2014

Free estimates

Warranties offered

"Meagynn very professional service, listened to what I want and reasonably price."
Response time4 days
Response rate89%
Recommended by100%of homeowners
Request Quote
Right Track Solar
New to Angi
Home Energy Audit

Serving Gardner, IL and surrounding areas

In business since 2017

Free estimates

Credit card accepted

Hi my name is Brandon, and I pride myself on reliability, great communication, integrity, and quality work. I strongly believe in giving my absolute best in all of the projects no matter how big or small. I am an expert in my trade and will always keep you educated on your particular task or project. I look forward to earning your business!\n\n

Request Quote
northshore pressure washing
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Gardner, IL and surrounding areas

In business since 2011

Free estimates

We are one of the largest energy consulting companies in the country. We offer Free Energy Forcasts to businesses across a wide variety of climate zones. When implemented, our recommendations can consistently save you 17-22% on your energy costs, in the first year. We offer a variety of products, from an all-inclusive fixed product, to a variable option and a hybrid. Call today to see what solutions we can offer you! References are available from very happy clients.

Request Quote
Hillcrest America
New to Angi
Energy Audit - For Business

Serving Gardner, IL and surrounding areas

In business since 2008

Free estimates

Credit card accepted

Hillcrest America has been synonymous with excellence in electrical contracting for nearly 70 years. We're currently expanding upon tradition and bringing our customers the latest energy technologies and systems to improve their efficiency. Our goal is to be your partner in improving your buildings energy efficiency with unique solutions and industry leading value. You can trust us to perform beyond expectations. Our obsessive devotion means each project is handled with care and in a professional manner. We've performed successful projects in nearly every industry. We're proud that some of the world's largest corporations have enjoyed the benefits of our solutions and strategies. The next time you're in the market for our services, don't hesitate to call and book an appointment today! Whether you're a Fortune 50 global company or a local small business, we'll work to provide you with the very best solutions, support and results. \n

Request Quote
A2 Engineering Services P.C
New to Angi
Home Energy Audit

Serving Gardner, IL and surrounding areas

In business since 2001

Free estimates

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Request Quote
Avatar for Rivero Total Maintenance, LLC
Rivero Total Maintenance, LLC
New to Angi
Energy Audit - For Business

Serving Gardner, IL and surrounding areas

Free estimates

Emergency services offered

Warranties offered

Rivero Total Maintenance LLC specializes in commercial property maintenance and repair services throughout Illinois. We provide professional solutions for businesses, retail locations, warehouses, and commercial facilities that need reliable and experienced technicians.\n\nOur services include electrical work, plumbing repairs, equipment maintenance, lighting, carpentry, painting, facility repairs, and general property maintenance. We are experienced in working in high-traffic environments where safety, quality workmanship, and minimal disruption to operations are essential.\n\nRTM is fully insured with General Liability and Workers’ Compensation, and our team arrives fully equipped to complete the job efficiently and professionally.\n\nOur goal is simple: You run the business, we handle the maintenance.\n

1 neighbors recently requested a quote
Request Quote
Energy Efficiency Auditing questions, answered by experts

Blower door tests are measured in a few different ways, but the most popular are air changes per hour (ACH) and cubic feet of air (CFM) moving through the house per hour. A good ACH score is less than 2ACH, but 1ACH is better. This means the house experiences a total air change within 60 minutes (for 1ACH). For 2ACH, there’s a complete change every 30 minutes, and so on. CFM scores are similar in that a lower score means less air change, and therefore less leakage.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Depending on the level of audit you choose, a home energy audit will at least include a walk-through of the home to determine visible inefficiencies, but may include testing and a highly detailed inspection and report laying out the home’s inefficiencies and providing recommendations to fix those issues. The audit may also include a review of utility bills and mechanical testing. Consult your home energy auditor about the types of services they provide before hiring.

You can save money on heating oil through a combination of improving home efficiency and smart purchasing strategies.

Home Efficiency and Usage:

  • Improve Insulation: Ensure your home, especially the basement and attic, is well-insulated and sealed against drafts to prevent heat leakage.

  • Manage Your Thermostat: Use a properly calibrated and programmable thermostat. Lower the temperature by a few degrees, particularly when you are away from home or asleep.

Purchasing Strategies:

  • Buy in the Off-Season: Order heating oil during the summer months when prices are generally at their lowest. This strategy is most effective if you have a large primary tank or a separate storage tank to accommodate bulk deliveries.

  • Consider a Delivery Contract: Some companies offer contracts with a set price for the term. This can lead to savings if market prices for oil increase, but you might pay more if prices drop.

Yes, installing an attic fan can help lower your electric bill—particularly if you live in a hot and humid region. By replacing hot and stuffy air with cooler air, these fans help regulate the temperature in your attic and the rest of your home, taking some of the pressure off of your air conditioner.

The Gardner, IL homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles