Compare Local Pros
Luminalt Solar Energy Solutions vs Arch Plumbing
San Francisco Electrical Contractors Comparison · Updated March 2026
These companies serve completely different needs: Luminalt specializes exclusively in solar energy systems, while Arch Plumbing handles plumbing and heating repairs.
| Luminalt Solar Energy Solutions | Arch Plumbing | |
|---|---|---|
| Rating | ★ 4.7 | ★ 4.9 |
| Years Licensed | 21 years | 13 years |
| License # | 845219 | 976019 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Francisco, CA | San Francisco, CA |
| Website | luminalt.com | archplumbinginc.com |
Key Differences
What Customers Say
Luminalt Solar Energy Solutions
Customers emphasize Luminalt's clear communication throughout multi-stage solar projects, attention to detail on challenging installations, and systems that continue performing well years after completion.
Arch Plumbing
Customers consistently highlight Arch Plumbing's punctual arrival, thorough diagnostic explanations before starting work, and clean professional service that often completes within an hour.
Key Takeaway: Luminalt's feedback centers on project management and long-term system performance over days or weeks, while Arch Plumbing's reviews emphasize same-day responsiveness and efficient completion of repairs within hours.
Customer Reviews
Luminalt Solar Energy Solutions
We had Luminalt Solar install 29 solar panels on our Victorian in Bernal Heights ten years ago. We’re thrilled with the installation and savings on our PG&E bill every month! Our service rep, Kayla,...
Pretty smooth process from start to finish. Zero surprises.
The Luminalt team was very easy to work with, and the end result is functioning perfectly.
Arch Plumbing
Anthony and Arch Team are the best! They installed a heater for our tenant and did an amazing job! Anthony kept us in the loop from start to finish. We've used them for all plumbing needs, now I'm so...
Called them on a late Saturday evening for a clogged toilet problem. Carissa and Eric showed up and wow! They were so thorough with their jobs. The basically took the whole toilet out and did such a c...
Gerson Rustrian was my Service Technician and Very Professional and well knowledgeable. My main water pipe was broken and he was able to repair and replace parts on this evening emergency. Thanks Arch...
Consider Luminalt Solar Energy Solutions if...
- ✓ You're planning a solar panel installation or adding battery storage to your San Francisco home and need a specialist with two decades of local solar experience
- ✓ Your property presents installation challenges like a Victorian roof structure, limited space, or complex electrical integration requiring solar-specific expertise
- ✓ You're pursuing a net positive energy project or complex solar plus battery system that benefits from veteran-level experience navigating San Francisco's building requirements
- ✓ You value a locally-focused solar contractor with established community roots and customer feedback emphasizing thorough project communication
Consider Arch Plumbing if...
- ✓ You need plumbing repairs, water heater service, drain clearing, leak diagnostics, or heating system work rather than solar installation
- ✓ You're facing an emergency plumbing situation and need a contractor known for after-hours and weekend availability with fast turnaround times
- ✓ You manage multiple properties or commercial facilities and need a versatile plumbing contractor who serves both residential and commercial clients
- ✓ You prioritize punctual arrival, clear diagnostic explanations, and clean work areas during service visits that typically complete within an hour
Questions to Ask Before Hiring
- → If considering solar installation with Luminalt, ask for references from projects similar to your home's structure and whether they'll handle all permitting and utility interconnection paperwork
- → If hiring Arch Plumbing, ask about their availability for emergency callbacks and whether they provide warranty coverage on parts and labor for installation work
- → For solar projects, confirm Luminalt's timeline from contract signing through final inspection and system activation with the utility company
- → For plumbing work, ask Arch Plumbing whether they provide flat-rate pricing or hourly billing and if diagnostic fees apply toward repair costs
The Bottom Line
This comparison only makes sense if you're evaluating contractors for two separate projects. For solar panel or battery storage installation in San Francisco, hire Luminalt—their 21 years of solar-specific experience, proven track record with challenging Victorian installations, and focus on communication throughout complex projects makes them the appropriate choice. For plumbing repairs, water heater work, drain issues, or heating system service, hire Arch Plumbing—their established plumbing expertise, emergency availability, and reputation for punctual, clean service fits those needs. Don't choose based on comparing these companies to each other; choose based on which trade specialty matches your actual project. If you need both solar and plumbing work done, hire both companies for their respective expertise.
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Frequently Asked Questions
No, these are specialized contractors in different trades. Luminalt installs solar panels and battery storage systems exclusively, while Arch Plumbing handles plumbing and heating repairs. If you need both solar and plumbing work, you'll need to hire both companies for their respective specialties.
Luminalt's 21-year history provides meaningful advantage only if you're installing solar, particularly for complex projects involving older homes or integrated battery systems. For plumbing work, Arch Plumbing's 13 years represents solid established experience. Longer licensing matters most within the same trade, not across different specialties.
Solar installations with Luminalt typically span multiple days or weeks from consultation through final inspection and utility approval. Arch Plumbing's repair and installation work generally completes within hours, with many customers noting jobs finished in under an hour. The timeline difference reflects the nature of solar installation versus plumbing repair work.
Arch Plumbing provides emergency plumbing service including after-hours and weekend availability for urgent issues like leaks or heating failures. Luminalt focuses on scheduled solar installations rather than emergency response, as solar work involves planned projects rather than urgent repairs.
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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 11, 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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