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

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Last update on August 26, 2026

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Avatar for Custom Air Care
Custom Air Care
5.0(
3
)
Energy Audit - For BusinessHome Energy Audit

Serving Waterloo, NE and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"Absolutely amazing! He was so knowledgeable and so kind. It was late at night and he came out right away because I was pregnant and had a child with pnemonia and it was freezing in the house. I will only use this company. Literally the best!!! I recommend them to everyone."
Outdoor condenser
Ventilation Hood Install
Indoor air handler
Hood on the roof
Onsite Fabrication

+9

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

Provide utility bills and clear access to all areas of the home, including the attic and basement.

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.

Hawaii is currently rated as the most expensive state for utilities. How much are utilities for a house in Hawaii? With electricity costs in Hawaii totaling nearly 42 cents per kilowatt-hour, residents are paying more to run their households than any other residents. Electricity costs in Hawaii are so high, mostly due to the fact that most of the electricity available to residents is produced using oil that must be shipped in from other places.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

Home power is measured in kilowatt-hours, commonly expressed as kWh. The average home uses between 800 and 1,000 kWh per month. Peak usage (and highest bills) occurs in the middle of summer and the depths of winter. Keeping on top of your usage during these crucial months will lower your annual average usage considerably. 

The Waterloo, NE homeowners’ guide to energy efficiency auditing services

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