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TRUSTED BY GLADSTONE, MO HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon58
    Verified energy efficiency auditing services reviews

Top-Rated Energy efficiency auditors in Gladstone - Updated Nov 2026

Avatar for Green Improvement Consulting
Green Improvement Consulting
4.9(
106
)
Home Energy Audit

Serving Gladstone, MO and surrounding areas

Approved

In business since 1986

Free estimates

Warranties offered

"Outstanding customer service and work. Sean and his crew were friendly, professional, and did impeccable work performing an energy audit, blown-in insulation, crack sealing, and foam injection. They kept the work areas and the house clean throughout the process. Truly appreciative of their work and the way they did it. Thank you!"
Attic Insulation Upgrade
Attic Insulation Upgrade
Attic Insulation Upgrade
Old AC
New AC

+22

Response time1 day
Response rate89%
1 neighbors recently requested a quote
Avatar for Green Factor Insulation
Green Factor Insulation
4.6(
106
)
Energy Audit - For BusinessHome Energy Audit

Serving Gladstone, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Warranties offered

"Nathan was awesome! I really appreciated his attention to detail and other improvement recommendations as part of providing an estimate for the job. Nathan is easy to work with and has excellent communications skills."
 Closed Cell Heatlok Soy 200
 Double Hung Vinyls
 Lifetime Warranty
Building in Effingham
 Rebuild sill and trim inside

+93

Response time2 days
11 neighbors recently requested a quote
Recommended by96%of homeowners
Bob Mills Heating & Cooling
5.0(
15
)
Energy Audit - For BusinessHome Energy Audit

Serving Gladstone, MO and surrounding areas

In business since 1999

Free estimates

Credit card accepted

"He's a really friendly guy, very responsive to my calls, schedules me in partly because we've had a working relationship for like six years. He's done work at the house that I live in. He replaced a furnace there and the air conditioner. The day before the warranty of the air conditioner that he had installed ran out, he installed a new one and it didn't work either. He went to the local manufacturer's distribution and got a third one and it didn't work either so he went and got me a brand new upgraded unit and a discount for all the inconvenience. He's a good guy and I have no complaints whatsoever. Sometimes, some of the worker bees that he sends when he is on a job and somebody has to come and check something, they come right away but they are not necessarily as diligent as he is."
Recommended by100%of homeowners
Avatar for NRC Services, LLC
NRC Services, LLC
4.5(
6
)
Energy Audit - For Business

Serving Gladstone, MO and surrounding areas

In business since 2016

Free estimates

Credit card accepted

NRC Services, LLC, is primarily focused on creating responsible, knowledgeable, and comfortable property owners. With over 10 years of experiences in the energy services and construction industry, I know the importance in a thorough, complete, and safe inspection. Coupled with ongoing training, and knowledge of how the utility industry changes, I hope to provide each individual with an inspection that can provide immediate and ongoing benefits for: \n \n -Real Estate Inspections for Purchase or Sale. \n -Ongoing Maintenance Plans. \n -Energy Efficiency Studies. \n -Construction Project Management. \n -Consulting. \n \nCall us today for a free estimate!

Closet Barn Door
Closet Barn Door
Partition Wall
Partition Wall
Finished Installation

+1

Response time1 day
Recommended by75%of homeowners
Morning Star Windows & Siding of KC Inc
4.6(
80
)
Energy Audit - For BusinessHome Energy Audit

Serving Gladstone, MO and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Very well.  Morning Star referred me to a free energy audit as a Missouri resident which will provide a $400 credit to my utilities.  The windows installed were double pane Heartland windows.  I've seen a significant reduction in my electric bill this summer immediately.   The installers did a great job.  I will be asking for their assistance again to finish the remainder of my windows.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

Recommended by90%of homeowners
Avatar for Mammoth Heating and Cooling LLC
Mammoth Heating and Cooling LLC
4.9(
9
)
Energy Audit - For BusinessHome Energy Audit

Serving Gladstone, MO and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"Fantastic company!!! Mammoth removed my conventional HVAC and all ductwork while upgrading my home to an energy efficient split system.... which is amazing! My entire house is comfortable, the system is great and our overall energy bills have dropped! The Mammoth team were on top of their game and I couldn’t be happier with their service."
Agnus Arts HVAC
Agnus Arts HVAC
Agnus Arts HVAC
Additional Photos
Additional Photos

+9

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

There are several signs that your house might have poor ventilation, including lingering odors, condensation on your windows, or mold and mildew. Your home may also feel stale and stuffy, or you might have trouble maintaining a comfortable temperature in your home. On top of that, you might develop allergy symptoms, such as sneezing, coughing, or headaches.

A good SEER rating for an HVAC system is typically between 15 and 20. However, minimum requirements vary by location; HVAC systems in northern states must have at least a 14 SEER rating, while those in southern states need a minimum of 15. For the highest possible efficiency, look for units with a SEER rating of 21 or higher. It's important to remember that a SEER rating represents the maximum efficiency a unit can achieve, not the level at which it will operate at all times.

Attic and whole-house fans improve a home's energy efficiency and comfort. They ventilate hot air from the attic, which reduces peak cooling loads, lowers reliance on air conditioning, and decreases indoor temperatures. This improved air circulation and expedited heat exit helps lower cooling costs, balance moisture levels, and enhance overall natural airflow, contributing to the efficient operation of other home equipment.

R-value is calculated by dividing the thickness of an insulation material by its thermal conductivity. The material's composition and density influence thermal conductivity. Materials with lower conductivity values provide better insulation. The higher the R-value, the better the material is at insulating, helping homeowners select insulation that meets the energy needs of their climate and home layout.

A small sump pump running infrequently uses an average of 10 kilowatt-hours (kWh) of electricity per month. The average cost for electricity is $0.171 per kWh. The size and use frequency affect how much electricity it uses. Sump pumps average one-third to one horsepower (hp) motors. One hp is equal to 745.7 watts. Watts multiplied by the time your pump is running divided by 1,000 equals your average kWh. Multiply kWh by your average cost of electricity. In areas with high rain or a marsh basin, the average cost can be as high as $15-$25 a month.

The Gladstone, MO homeowners’ guide to energy efficiency auditing services

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