Trusted Home Energy Audit for Palo Alto Homeowners
A Home Energy Audit - Palo Alto typically costs between $350 and $850 depending on home size and testing depth, with same-day scheduling available for most single-family homes. Our crew completes the full diagnostic visit in 2 to 4 hours and delivers a written report with prioritized recommendations within 48 hours. Call (650) 352-3577 to book or to request a free second opinion on any written estimate you’ve already received.
We’ve been operating under The Haven Standard since 2016, and in that time we’ve audited more than 9,000 homes across the Peninsula and South Bay. Palo Alto presents a specific set of envelope problems: Eichlers with flat roofs and minimal attic space, 1950s ranch homes in Green Gables with original knob-and-tube wiring limiting insulation depth, and newer construction in Old Palo Alto where tight envelopes were assumed but rarely verified with a blower-door test. Our audit protocol was built for these conditions. Every visit begins with a written price before any testing starts and ends with a Documented Photo Record, plus before-and-after blower-door numbers on any follow-up air-sealing work. We don’t perform urgency theater, and we don’t ask you to call for a quote. The price is fixed in writing before the first hose leaves the truck.
What Our Home Energy Audit Service Includes
Blower Door Test
A blower-door test is a pressurization reading that shows, in one number, how much conditioned air your building envelope is losing. We depressurize your home to 50 Pascals and measure airflow in CFM50, cubic feet per minute at that standardized pressure. In Palo Alto, we regularly see readings above 4,000 CFM50 in pre-1980 homes in Professorville and the Downtown North area, which means the house is exchanging its entire volume of air with the outside every few minutes. Our crew runs the test at the start of every audit to establish a baseline, then uses the results to trace leak paths with a smoke pencil. If you hire us for follow-up air sealing, we run the same test afterward and publish both numbers in your final documentation.
Thermal Imaging Inspection
Thermal imaging, or infrared thermography, maps surface temperature differences across walls, ceilings, and floors to reveal insulation gaps, moisture intrusion, and thermal bridging that visual inspection misses. Our FLIR cameras pick up temperature differentials as small as 0.1 degrees Fahrenheit, which matters in Palo Alto’s mild climate where problems are subtle. We find missing insulation above dropped soffits in Midtown homes, air leaks around chimney chases in Old Palo Alto, and moisture patterns in crawl spaces near Matadero Creek that indicate vapor barrier failure. The thermal images become part of your Documented Photo Record, annotated with our notes on what each pattern means and what repair priority we assign it.
Insulation Inspection
Our insulation inspection measures existing R-values, identifies compression and settlement, flags fire hazards like insulation contacting non-IC-rated can lights, and checks for rodent damage or moisture degradation. In Palo Alto, we see a lot of well-intentioned but poorly executed DIY attic insulation, especially in the Ventura and Charleston Meadows neighborhoods where homeowners added batts over existing material without sealing first. That layered approach traps moisture and reduces effective R-value. We use a depth gauge and density probe to calculate actual performance, not just what’s on the label. Our report tells you whether to remove, supplement, or leave in place, and we never recommend adding insulation over an unsealed surface.
Duct Leakage Test
A duct leakage test pressurizes your HVAC duct system and measures how much air escapes to unconditioned spaces, attic, crawl space, or wall cavities. California Title 24 allows up to 15% leakage in new construction; we routinely find 30% to 50% in Palo Alto homes with original ductwork, particularly in the Barron Park and Fairmeadow areas where flex duct from the 1970s has degraded at the plenum connections. The test takes about 45 minutes and requires sealing all supply and return registers with tape and plastic. We quantify leakage as a percentage of system airflow and map the worst paths with a smoke test. Duct sealing alone can improve delivered capacity by 20% or more in homes with severe leakage.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Brands We Service for Home Energy Audit
Our audits evaluate insulation and air-sealing systems regardless of manufacturer, but we maintain direct familiarity with the products installed in most Palo Alto homes. We’ve worked extensively with Owens Corning fiberglass batts and blown-in systems, common in Peninsula tract construction from the 1960s through the 1990s. Their AttiCat blown-in product is frequently found in local attics, and we know how to assess whether it has settled below labeled depth and whether the installation met their coverage chart specifications. We also evaluate Johns Manville mineral wool and formaldehyde-free fiberglass installations, particularly in newer construction and green-certified remodels where low-VOC materials were specified.
Demilec spray foam appears in higher-end Palo Alto renovations, especially in conditioned attic assemblies where open-cell foam was applied to the roof deck. We inspect for proper thickness, off-ratio curing, and the characteristic odor that indicates failed chemical reaction. GreenFiber cellulose, made from recycled paper with borate fire retardant, is common in eco-conscious retrofits in the Professorville and Community Center areas. We check for proper density, moisture content, and whether it was dense-packed or loose-blown, which affects both performance and settling behavior. Whether your home has Owens Corning, Johns Manville, Demilec, GreenFiber, or any other make, we can evaluate it, document its condition, and specify exactly what needs to change.
Signs You Need Home Energy Audit Right Now
- Your upstairs rooms run 8 to 12 degrees warmer than downstairs in summer. This isn’t normal in a properly sealed and insulated home. In Palo Alto’s climate, where coastal influence moderates extremes but inland heat still pushes 90 degrees in July, temperature stratification usually points to attic duct leakage, inadequate top-floor insulation, or a bypass allowing hot attic air to pressurize the second floor. An audit isolates which factor dominates.
- Your PG&E bill spikes in winter despite mild outdoor temperatures. Peninsula heating degree days are moderate, so a gas bill that climbs above $200 in January for a 2,000-square-foot home suggests envelope failure. We frequently find this in Palo Alto homes with original wall insulation, or where fireplace flues and whole-house fans create major leakage paths that override the heating system.
- You feel drafts near outlets, baseboards, or can lights even with windows closed. These are telltale signs of pressure-driven air leakage through the thermal boundary. In Eichler homes and other flat-roof construction common in Palo Alto, the ceiling plane is often the leakiest surface, with can lights and attic access hatches creating direct paths to unconditioned space. A blower-door test quantifies the problem and a smoke pencil traces the exact sources.
- Your home was built before 1990 and has never had a professional energy assessment. Pre-Title 24 construction in Palo Alto, including most of the Green Gables, Duveneck/St. Francis, and Crescent Park neighborhoods, was not required to meet air-sealing standards. Original construction practices left top plates unsealed, penetrations uncaulked, and duct systems untested. An audit documents what you’re living with and what it would take to fix it.
- You’re considering solar panels, a heat pump, or an EV charger and want to right-size the system. Adding capacity to a leaky home is expensive overkill. We’ve audited Palo Alto homes where proper air sealing and insulation reduced heating and cooling loads by 30%, allowing smaller, less expensive HVAC equipment and fewer solar panels. The audit pays for itself in avoided capital cost before any energy savings.
Our Home Energy Audit Process - Step by Step
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Schedule and written price confirmation. When you call (650) 352-3577, a live person answers. We ask about your home’s square footage, year built, and any specific problems you’ve noticed. We quote a flat price for the audit tier you need, basic or comprehensive, and email a written scope with that price before we dispatch. No work starts without it. Haven Standard Clause 1.
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Arrival and baseline documentation. Your technician arrives in a marked vehicle, uniformed, and texts when en route. We photograph the exterior, mechanical room, and attic access before touching anything. If you’ve had prior energy work done, we note it. We verify your PG&E account number with your permission so we can pull 24 months of usage history for the report.
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Blower-door test and thermal imaging. We set up the blower door in your front or back entry, depending on door type and weatherstripping condition. The test runs 15 to 20 minutes while we walk the house with a smoke pencil and FLIR camera. In Palo Alto’s mild climate, we prefer testing on days with at least a 15-degree temperature differential between inside and outside for clear thermal images, but we can work with smaller differentials if your schedule requires.
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Attic, crawl space, and duct inspection. We enter every accessible attic and crawl space with a headlamp, moisture meter, and depth gauge. We map insulation type, depth, and condition; identify air leaks at top plates, wire penetrations, and chimney chases; and inspect ductwork for leakage, kinks, and disconnected runs. Every finding is photographed and geotagged.
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Written report delivery and consultation. Within 48 hours, you receive a PDF report with prioritized recommendations, estimated costs for each measure, projected savings based on your actual usage history, and the full photo documentation. We schedule a 30-minute phone or video walkthrough to answer questions. If you choose to proceed with work, the audit fee applies toward your project. If you want a second opinion on our recommendations, we encourage it. Bring us any competing quote and we’ll read it with you, line by line.
How Much Does Home Energy Audit Cost in Palo Alto?
A basic home energy audit for a single-family home under 2,500 square feet in Palo Alto typically runs how much Home Energy Audit costs at $350 to $550. This includes the blower-door test, thermal imaging, insulation inspection, and a written report with recommendations. A comprehensive audit adding duct leakage testing, combustion safety testing for gas appliances, and a detailed scope for rebate applications runs $550 to $850 for the same size range. Homes between 2,500 and 4,000 square feet add $100 to $200 depending on attic and mechanical system complexity. Eichlers and other flat-roof homes with conditioned attic spaces sometimes require additional time for duct mapping and roof-deck access, which we quote upfront.
Several factors affect where you land in these ranges. Homes built before 1960 with original systems and limited access points take longer to inspect thoroughly. Multiple HVAC zones, radiant heating, or evaporative cooling add testing protocols. If you need HERS rater documentation for a Title 24 compliance report or utility rebate submission, that certification carries additional cost. We don’t markup for Palo Alto zip codes specifically, but travel time to outlying areas like Portola Valley or Woodside may affect scheduling priority.
To avoid overpaying, get the scope in writing and verify what’s included. Some competitors advertise low audit prices but charge separately for the blower-door test or thermal imaging. Our written price includes every test we perform, every photo we take, and the full report. We also offer a Free Second Opinion on any written estimate from another contractor, even if you don’t hire us for the audit itself. Estimates are free and carry no obligation.
Home Energy Audit Near Palo Alto - Our Service Area
We audit homes throughout the mid-Peninsula and southern Santa Clara County with typical response times of same-day to 48 hours. Our primary service area includes Palo Alto, Los Altos Hills, Stanford, Los Altos, Mountain View, East Palo Alto, Portola Valley, Atherton, Menlo Park, North Fair Oaks, Sunnyvale, and Woodside. Crews dispatch from our Peninsula hub, and we schedule Palo Alto visits to minimize drive time between appointments. If you’re in a surrounding city not listed, call (650) 352-3577 and we’ll confirm coverage and timing.
Serving Palo Alto, CA - Our Local Coverage Area
We’re based in the Palo Alto area and know this community well, and we also offer our Home Energy Audit in Menlo Park. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Home Energy Audit in Palo Alto
A home energy audit is a systematic diagnostic evaluation of your building envelope, insulation, and mechanical systems to identify where conditioned air is lost and energy is wasted. Our audit combines a blower-door test, thermal imaging, insulation inspection, and duct leakage testing to produce a prioritized list of improvements with cost and savings estimates. You’ll receive a written report with photos, measurements, and our recommended sequence of work, sealed first, then insulated.
Most audits take 2 to 4 hours on site, depending on home size, accessibility, and whether duct leakage testing is included. A basic audit for a 1,800-square-foot ranch in Palo Alto typically runs 2 to 2.5 hours, while our Home Energy Audit in Stanford follows the same thorough protocol. Larger homes with multiple attics, crawl spaces, or HVAC zones can extend to 4 hours. Your written report arrives within 48 hours, followed by a scheduled consultation call to walk through findings. Call (650) 352-3577 to book a slot that fits your calendar.
Basic audits run $350 to $550 for homes under 2,500 square feet, and comprehensive audits with duct testing and combustion safety checks run $550 to $850. Larger homes or those with complex mechanical systems fall toward the higher end. The price is fixed in writing before we arrive, and the audit fee applies to any follow-up work you hire us to complete. For an exact quote on your home, call (650) 352-3577, estimates are free.
Yes, we evaluate Owens Corning systems regularly, including AttiCat blown-in fiberglass and batts found in many Peninsula homes. We assess whether installation depth matches the coverage chart, whether settling has occurred, and whether the product was installed over a properly sealed attic floor. If replacement or supplementation is needed, we specify exact product and depth to meet your performance target, with no proprietary lock-in.
We offer same-day scheduling for most Palo Alto addresses when you call before 10 a.m., and next-day scheduling for calls received later. True emergencies, like post-fire or flood damage assessment, get priority dispatch. For non-urgent scheduling, we typically book within 48 hours. A live person answers calls 24/7 to confirm availability and hold your slot with a written price.
Our 365-Day Done Right Promise applies to any follow-up work performed after the audit. If we recommend air sealing or insulation and you hire us to complete it, that work is covered: if it’s not done right, we make it right. The audit itself is a diagnostic service, but our recommendations are backed by the same written scope and warranty documentation as our installation work. Haven Standard: Have it in writing.
Close all windows and exterior doors at least 4 hours before our arrival so the house reaches stable pressure. Make attic and crawl space accesses clear of storage. Have 24 months of PG&E bills available, or provide your account number so we can pull usage history. If you have recent renovation records, energy improvement receipts, or prior audit reports, leave them out for reference. We’ll handle equipment setup, testing, and cleanup. Call (650) 352-3577 with any prep questions.
Schedule Your Home Energy Audit Service in Palo Alto Today
Call (650) 352-3577 to speak with a live person and book your audit. We’ll confirm a flat, written price before any work starts, arrive on schedule with a named technician, and deliver your documented report within 48 hours. Whether you’re troubleshooting a specific problem or planning a whole-home efficiency upgrade, the audit gives you measured facts to work from. Free estimates, free second opinions on competing quotes, and the 365-Day Done Right Promise on all follow-up work.
Written by Wes Okafor, Owner at Topside Attic Insulation Palo Alto, serving Palo Alto and the mid-Peninsula since 2016.