Home Energy Score in the Bay Area: What the DOE Audit Tells You and Which Rebates Pay for It

A Home Energy Score is a U.S. Department of Energy rating from 1 to 10. Ten is best. The score is generated from a one-hour on-site audit by a certified assessor. It is not an estimate or a guess. The DOE tool takes the measured inputs and returns a number that buyers, sellers, and lenders can use the same way across the country.

We coordinate the audit with a certified DOE HES assessor in the Bay Area when a homeowner asks for one, when we are already on site for a heat pump quote, or when an MLS listing needs it before going active.

What we look at in the hour

The score depends on the building envelope, the HVAC equipment, and the windows. The assessor walks the home and collects:

• Wall, ceiling, and floor insulation type and approximate R-value
• Duct location and condition. Attic ducts in older Tri-Valley homes are usually the biggest single drag on the score
• HVAC equipment age, SEER2 or AFUE rating, and tonnage
• Window count, glazing, and frame type
• Water heater type and fuel
• Air leakage when the homeowner asks for a blower door test

Combustion safety on gas appliances gets a separate check. The assessor tests the furnace and water heater for draft and CO at the burner. This is not part of the DOE score itself but it is part of how the audit visit is run. If something fails it gets written up before the score goes out.

What BayREN pays

BayREN runs the Bay Area Regional Energy Network programs. The Home Energy Score incentive has paid $200 in recent cycles, plus an additional $50 for completing the Electrification Checklist. Both come and go with funding. We confirm what is currently paying at booking. When neither is open we say so and quote the audit as a private service.

For comparison: federal Section 25C expired December 31, 2025, and Tech Clean California closed November 14, 2025. We do not quote either. The BayREN incentive is the live program for the audit itself. Separate utility programs through MCE, PG&E, and Ava Community Energy (formerly EBCE) in Alameda County may pay for equipment upgrades that the score recommends.

What the report looks like

The output is one PDF with two parts. The first part is the score and a comparison band against similar Bay Area homes. The second part is a prioritized list of upgrades. Each upgrade line shows the score gain, the rough cost, and the payback estimate. The DOE generates the recommendations. We do not add or remove items from the list.

A typical Bay Area report names duct sealing, attic insulation upgrade, and HVAC replacement near the top. Older Tri-Valley homes often show the score gain biggest on duct work because the attic ducts in those homes were installed before R-8 was standard.

When the audit makes sense

The audit is worth doing when:

• You are selling and the listing benefits from a verified efficiency number
• You are planning HVAC or insulation work and want a baseline before and after
• You want a prioritized roadmap before deciding what to do first
• You qualify for the BayREN incentive and the audit cost is covered

The audit is not worth doing when the home is already in the middle of a major remodel that will change the envelope before the report dries.

Booking

Call (925) 999-4095 or use the form on the contact page. We confirm BayREN funding status and the visit window when we book. The walkthrough with the certified assessor is about an hour, the written report goes out within 48 hours, and the BayREN paperwork is handled as part of the service.

Key takeaways

• DOE Home Energy Score is a 1 to 10 rating. 10 is best. Walkthrough takes about an hour.
• BayREN typically pays $200 for the score plus $50 for the Electrification Checklist when funding is open. Confirm at the time of booking.
• The audit covers insulation, ducts, building envelope, combustion safety, and HVAC condition.
• Buyers can use a recent score on the MLS listing. Owners use it to prioritize upgrades.
• We run the audit on the same visit as a quote or seasonal tune-up where it makes sense.

Related questions

Written by Andrew Kuznetsov. Andrew is the founder and owner of Bay Area HVAC Service (ADRIUM Service Solutions). He holds a California Contractor License (CSLB #1136642), EPA 608 certification, and completed factory training at the Daikin/Goodman plant in Houston in 2025. He writes from direct field experience, not marketing copy.

Further reading

• AC Not Cooling After a Power Outage: Breaker, Thermostat, Contactor, or Control Board? , Power's back but the AC isn't. Work through the breaker, thermostat, and filter yourself, understand what a stuck contactor or fried control board actually means, and know exactly when it's time to call instead of keep resetting things.
• Furnace Making Noise: What Banging, Humming, and Clicking Mean Before, During, and After a Cycle , A furnace ticking or popping after it shuts off is almost always the ductwork and heat exchanger cooling down, normal and not a problem. This breaks down what each noise means by when you hear it, what a tech actually checks, and where the safe homeowner checks end.
• AC Not Cooling on the First Hot Weekend: What to Do , A safe first-hot-weekend triage for thermostat, airflow, condensate, electrical, refrigerant, and compressor clues without a same-day promise.