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Building Efficiency vs Kevel Home Performance
San Francisco General Contractors Comparison · Updated March 2026
Building Efficiency brings nearly double the licensed experience with stronger emphasis on heat pump and electrification expertise, while Kevel offers solid competence with a focus on traditional HVAC and diagnostic assessments.
| Building Efficiency | Kevel Home Performance | |
|---|---|---|
| Rating | ★ 4.9 | ★ 5.0 |
| Years Licensed | 16 years | 9 years |
| License # | 947504 | 1021221 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Francisco, CA | San Francisco, CA |
| Website | buildingefficiency.net | www.kevelhome.com |
Key Differences
What Customers Say
Building Efficiency
Customers consistently highlight Building Efficiency's technical expertise in equipment sizing, system design for complex installations, and successful execution of comprehensive electrification projects combining multiple components.
Kevel Home Performance
Customers emphasize Kevel's thoroughness in upfront energy assessments, leak testing diagnostics, and professional installation of traditional HVAC systems in historic properties.
Key Takeaway: Building Efficiency's reviews focus heavily on heat pump specialization and complete electrification transitions, while Kevel's feedback centers on diagnostic rigor and conventional furnace replacement expertise.
Customer Reviews
Building Efficiency
Incredible team, professional, terrific communication and great clean work. Absolutely recommend.
Building efficiency was very easy to work with thru all phases of my project: from initial consultation, through rebate applications to the actual project itself. Reliable and professional.
The Building Efficiency team was a joy to work with. They made my life easy at every step of the process.
Kevel Home Performance
We recently moved to our new home and had to replace a super old antique furnace. We hired Kevel to completely redo all our ducting and install a new high efficiency furnace. Brian, Jeff, and Eric ar...
We have a 150 year-old victorian condo and the windows are somewhat newer, but the house was not sealed completely. Brian and his team came in and did a leak test, went above and beyond to seal the bu...
First rate operation. Kevel came to us by way of our asking for assistance in taking advantage of the Energy Upgrade California Program. We were working with Charles Windows and Doors of San Rafael,...
Consider Building Efficiency if...
- ✓ You're planning a complete home electrification project, transitioning from gas furnace and water heater to heat pump systems, where Building Efficiency's specialization and sizing expertise directly applies.
- ✓ Your home is 85-100 years old with complex spatial constraints requiring creative ductwork and equipment placement solutions that benefit from 16 years of problem-solving experience.
- ✓ You need comprehensive multi-component upgrades combining heat pumps, insulation, and ductwork modifications in a single coordinated project.
- ✓ You want a contractor with nearly two decades navigating San Francisco's specific permitting, rebate programs, and historic property requirements.
Consider Kevel Home Performance if...
- ✓ You're replacing a traditional furnace and ductwork system rather than converting to heat pumps, where Kevel's HVAC focus aligns with your project scope.
- ✓ You want extensive upfront diagnostic work including leak testing and detailed energy assessments before finalizing your project approach.
- ✓ Your Victorian or historic property needs air sealing and thermal improvements but you're not yet ready for full electrification conversion.
- ✓ You value thorough pre-work assessments and are comfortable with a contractor who has solid nine-year experience rather than veteran status.
Questions to Ask Before Hiring
- → Ask Building Efficiency for specific examples of heat pump installations in homes similar to yours in age and layout, and how they handled unexpected complications during those projects.
- → Ask Kevel what percentage of their current projects involve heat pump installations versus traditional HVAC, and whether their crew has specialized heat pump training if that's your planned system.
- → Ask both contractors how they handle situations where opening walls reveals more extensive work needed than initially quoted, and request references from projects where scope expanded mid-job.
The Bottom Line
Building Efficiency holds clear advantages for most San Francisco homeowners, particularly those pursuing heat pump installations or complete electrification projects. The 16-year track record provides meaningfully more experience diagnosing complications in century-old homes, and their specialization directly matches the direction residential energy codes are heading. Kevel remains a solid choice for traditional HVAC replacements and homeowners who prioritize thorough diagnostic assessments before work begins, but the experience gap and electrification expertise make Building Efficiency the stronger option for complex upgrades or heat pump projects. If your project involves transitioning from gas systems or your home presents spatial challenges, schedule Building Efficiency first.
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Frequently Asked Questions
Yes, particularly for older San Francisco homes where hidden issues are common. Building Efficiency's 16 years means they've encountered more variations of structural surprises, outdated wiring configurations, and spatial challenges that only reveal themselves once work begins. For straightforward replacements in simpler homes, Kevel's nine years provides solid competence, but for complex electrification or homes built before 1940, the additional experience offers meaningful value.
Building Efficiency clearly specializes in heat pump installations with extensive customer feedback highlighting proper sizing and electrification expertise. Kevel's reviews focus more on traditional furnace replacements and HVAC systems. If you're installing a heat pump, especially as part of broader electrification, Building Efficiency's specialization is a distinct advantage. For conventional furnace work, both are capable but Kevel shows particular strength in diagnostic assessments before installation.
Both assist with rebate applications and participate in Energy Upgrade California programs, so baseline capability exists with each. Building Efficiency's longer tenure means they've processed rebates through more program iterations and policy changes over 16 years. Practically, either should successfully guide you through current rebate processes, but ask each specifically about recent projects similar to yours and which rebates they secured.
Kevel emphasizes thorough upfront energy assessments and leak testing, which appeals if you want extensive diagnostic work before committing to solutions. Building Efficiency focuses more on comprehensive project execution combining multiple upgrades simultaneously. If you value detailed pre-work analysis, Kevel's approach fits better. If you already know you need heat pumps and insulation and want integrated execution expertise, Building Efficiency's complete project focus aligns better with that priority.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 12, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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