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*The Angi rating for Energy Efficiency Auditing companies in Oaklevel, VA 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 Oaklevel, VA 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 October 21, 2025

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Avatar for Earth Right Mid-Atlantic
Earth Right Mid-Atlantic
3.8(
18
)

Serving Oaklevel, VA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"My system is working great its nice to get my light bill and have a credit. Professional sales and service."
Energy Efficiency Completed Projects
Energy Efficiency Completed Projects
Energy Efficiency Completed Projects
Energy Efficiency Completed Projects
Energy Efficiency Completed Projects

+35

Response time1 day
Response rate85%
97 neighbors recently requested a quote
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Avatar for CSI Home and Commercial Services
CSI Home and Commercial Services
4.6(
80
)

Serving Oaklevel, VA and surrounding areas

In business since 1995

Free estimates

Credit card accepted

"Amazing team of professional individuals. Extremely thorough and willing to share their knowledge. No such thing as a stupid question. Broke everything down to laymen terms. Totally worth every penny. Can't wait to get back an estimate and higher them to do the work!"
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+5

Recommended by97%of homeowners
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Avatar for Renewable Engineered Systems
Renewable Engineered Systems
4.7(
12
)

Serving Oaklevel, VA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"Wonderful, it was a very quick and easy process. Brian talked us through it and in no time we had a 3KW system mounted on a frame in the garden and the invertor installed in the basement. Brian talked us through working with our power company to get the system checked and approved and we now get credits from the power company for power we provide to the grid. In addition we are set up to get Solar Renewable Energy Credits (SRECs) payments for providing clean energy. We also got a free Energy Audit which helped locate some problems areas we were able to fix. The system has basically cut our energy costs in half. I have hesitation in recommending them to anyone interested in solar energy."
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+14

Recommended by100%of homeowners
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Energy Efficiency Auditing questions, answered by experts

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.

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.

DIY is possible with basic tools. Professional audits provide comprehensive assessments and tailored recommendations.

There are energy-efficient options when building a cottage. Select green building materials, high-performance insulation, and energy-efficient windows when designing your cottage. Options such as solar panels, efficient HVAC systems, and LED lighting can lower your utility bills and reduce your environmental impact. Many builders offer energy-efficient upgrades as part of the design process.

Installing weather stripping or upgrading to insulated panels can improve efficiency.

The Oaklevel, VA homeowners’ guide to energy efficiency auditing services

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

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