Home Energy Rating Mill Valley, California

San Rafael

(415) 942-6565

Santa Rosa

(707) 452-3464

Utility costs are growing in Mill Valley, Marin County, and the entire state of California. Between January 2021 and September 2023, there was a 38% increase in electricity prices. Natural gas prices rose by 24% between November 2021 and November 2022.

It should go without saying that lowering energy expenses requires improving home efficiency. Are there any inefficiencies in your house? Why should we assume anything at all? It is possible to get your home’s energy score (HES) audited! Using measurements and calculations, a Department of Energy-accredited home energy auditor from John Owens Services will give your house a score between 1 and 10. Much like a car’s miles per gallon, the higher the figure, the more inexpensive the home’s energy performance is.

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How Was the Home Energy Score Created?

The Home Energy Audit was developed using the U.S. Department of Energy’s formula for assessing the energy use of a home. During an energy audit, each room in your house is measured and given a number; 10 represents the highest efficiency. An energy audit usually gets a score of roughly 5. This study considers how much energy is used in your home as well as the expected cost of energy. The score provides a list of options for residents to consider and can be finished in ten years or fewer. Home Energy Assessments can also be used to rank every project based on the costs that homeowners will incur.

When to get an HES Score in Mill Valley, California

An excellent method of figuring out your home’s energy usage and what improvements may be made to cut down on energy use is through Home Energy Assessments. You may rest assured that the money will be well spent because it recommends changes that will quickly pay for themselves in energy savings. These can include energy-efficient appliances that can regulate high energy use, like heat pump air conditioners, which improve the operation of your house while using less energy. If you’d like to see how much energy you use and where you could save money on your energy bills, now’s a wonderful time to check your Mill Valley, CA, home’s energy score.

Having an official Home Energy Score on file will be very beneficial if you ever decide to sell your home, as well as assist you in deciding which energy-saving improvements to undertake. A prospective buyer is asking questions concerning every aspect of the home. If this feature is divulged to them, they will be more interested in the house, especially if the score is higher than that of other houses in the neighborhood.

If you prioritize fixing energy-related concerns before advertising your house, potential buyers will find it more enticing because of the enhanced safety and energy-saving features brought about by this assessment approach.

What are Home Energy Auditors and a Home Energy Score?

Home Energy Score rating chart

An energy audit of your house will be carried out by experts with Department of Energy certification, referred to as home energy auditors. Home energy auditors can include certified contractors, inspectors of homes, or specialists in the business of offering energy audits to customers. These energy consultants perform an energy report on your house, collecting a great deal of data as they go. This information is then used by the HERS raters and the Home Energy Rating systems to grade your property depending on its energy efficiency.

What is inspected as part of the Home Energy Audit in Mill Valley, CA?

The following tasks are part of the HES:

  • Finding the square footage of the foundation and the house
  • Assessing the size and efficiency of the energy systems you now use, like your air conditioner, space heater, and hot water heater
  • Determining the quantity and thickness of windows
  • The attic, walls, and crawlspace’s insulation thickness
  • Analyzing the electrical panel
  • Inspecting the air sealing at seams and penetrations
  • The air ducts’ condition

These items are optional:

  • Using a duct blaster to check your space heating system for leaks (most ducts leak up to 30%).
  • Use the Blower Door Test to see whether the air quality in your house has changed in an hour. Leaks that frequently occur in places like electrical outlets, above stoves, fireplaces, and even windows can significantly worsen existing air leaks. Two air changes an hour is the ideal number in a dwelling; usually, five to ten take place.

In addition, specifics like an estimate of the total energy consumption based on fuel type, operating characteristics, and occupant behavior will be given.

What Do They Do With the Information from Home Energy Audits?

Following this evaluation, these home energy auditors will be able to provide you with a customized list of fantastic suggestions for reasonably priced house repairs, an estimate of the annual savings, a return on investment, and an efficiency score between one and ten. Your Mill Valley, CA, home’s energy efficiency rating will be known to you, as will every improvement you can make to your existing appliances and new equipment (such as high-efficiency air conditioning) that can raise your rating, giving you an energy-efficient home in Mill Valley, CA.

If property owners decide to put the recommended energy-saving measures into practice, home energy auditors can also give them an early look at their prospective Home Energy Score based on the audit’s findings. If you make the high-quality, energy-efficient solutions that the test suggests, your Mill Valley, CA, home’s score might go from its current 3 to a 7.

Next, we start making plans for any upcoming changes that will raise your score, lower your energy costs, and improve your energy usage. Heat pump water heaters and insulation are two examples of these quality improvements that may be among the solutions provided by the test. Upgrade estimates are included in the audit. In addition, the John Owens Services team could help with equipment installation, getting permissions, and any related rebates.

What Are Common Quality Upgrades Recommended for Energy Efficiency?

  • Insulation upgrades to the attic, basement, or walls.
  • Heat pump water heater
  • Ductwork upgrades
  • Duct sealing
  • Seal can lights and seams in attic
  • Install programmable thermostat

What Do Home Energy Scores Cost in Mill Valley, California?

The precise cost of a home energy audit in Mill Valley, CA, will vary based on the size of your property, but it typically costs $399. BayREN may be able to reimburse you in cash for your energy assessments. Residential customers should always ask about potential rebates when getting a Home Energy Audit. The cost of any improvement that is suggested and advertised to homeowners will be extra.

The John Owens Way

Our philosophy is simple, we always want to maintain equipment to give it the longest life possible. Next, we want to focus on repairing when something goes wrong. Then only as the last choice, we replace equipment when needed. That’s the John Owens Way.

San Rafael
(415) 942-6565
Santa Rosa
(707) 452-3464



Regular maintenance keeps your home’s systems running well all year long. We’ll help you gain efficiency and save money.



When something breaks down, our team will get to you fast. We’ll find the problem and fix it to get you back to normal.



When it’s time to replace something in your home, we’ll help you get a top quality product that matches your specific needs.
San Rafael
(415) 942-6565
Santa Rosa
(707) 452-3464