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Sierra Valley Mechanical vs Rex Moore
Sacramento Electrical Contractors Comparison · Updated March 2026
Sierra Valley Mechanical specializes in residential HVAC with extensive customer feedback, while Rex Moore focuses on commercial/industrial electrical with no available homeowner reviews.
| Sierra Valley Mechanical | Rex Moore | |
|---|---|---|
| Rating | ★ 5.0 | ★ 3.7 |
| Years Licensed | 22 years | 13 years |
| License # | 826606 | 976827 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Rancho Cordova, CA | Sacramento, CA |
| Website | www.sierravalleymechanical.com | www.rexmoore.com |
Key Differences
What Customers Say
Sierra Valley Mechanical
Customers consistently praise punctual service, transparent diagnostics without pressure sales, and long-term reliability with many maintaining 10-20 year relationships.
Key Takeaway: Sierra Valley has substantial residential customer feedback demonstrating service patterns homeowners rely on, while Rex Moore has no available reviews to assess residential service quality or customer experience.
Customer Reviews
Sierra Valley Mechanical
Excellent customer service.. I had a minor issue with my hybrid, hot water heater. They made an appointment very quickly, and it took less than an hour for Bobby to fix.. I had expected the worse, b...
Very informative as to what the issue was with our A/C. Found out how we could HELP prevent this from happening again. The issue was the compresser.
Excellent support, service, and installation! Sierra Valley Mechanical helped me plan my home electrification project (thank you, Matt), supported me through the paperwork to secure rebates and incent...
Rex Moore
Quality service and very professional.
Great company
#1 Electrical contractor in Sacramento and #40 in Nation for design/build electrical services.
Consider Sierra Valley Mechanical if...
- ✓ You need HVAC services including heat pumps, mini-splits, AC/furnace repair, or water heater replacement, which represent Sierra Valley's core documented expertise over two decades.
- ✓ Responsive scheduling matters to your timeline, as customer feedback consistently highlights same-day and next-day service availability with punctual arrivals.
- ✓ You value transparent diagnostics without pressure sales, which long-term customers specifically praise when discussing major system replacements versus repair options.
- ✓ Your project involves utility rebate programs like SMUD electrification incentives, where Sierra Valley has documented participation experience.
Consider Rex Moore if...
- ✓ You have a commercial or industrial electrical project requiring design/build capabilities, which aligns with Rex Moore's stated specialization.
- ✓ Your electrical work involves large-scale installations rather than residential service calls, matching their commercial focus.
- ✓ You're willing to conduct thorough vetting through direct references since public customer feedback isn't available to verify residential service quality.
- ✓ Your project timeline allows for evaluation of their residential capabilities, as their commercial background doesn't automatically translate to homeowner service expectations.
Questions to Ask Before Hiring
- → Ask Rex Moore directly for residential project references and examples of similar homeowner work, since their documented experience focuses on commercial/industrial projects.
- → Ask Rex Moore about their residential service response time and scheduling processes, as their commercial focus may mean different availability than residential-oriented contractors.
- → Ask Rex Moore whether they maintain dedicated residential service technicians or primarily deploy commercial crews to home projects.
- → Ask both contractors for specific timelines and crew availability for your project, as their operational models appear quite different.
The Bottom Line
For residential HVAC and electrical projects, Sierra Valley Mechanical is the clear choice with 22 years of documented homeowner service, consistent customer feedback praising responsiveness and fair pricing, and proven expertise in heat pumps, mini-splits, and home electrification. Rex Moore's commercial/industrial electrical focus and complete absence of residential customer reviews make them unsuitable for most homeowner projects unless you have a commercial-scale electrical need. If you're comparing these contractors for typical home HVAC or electrical work, Sierra Valley's track record provides the verification and residential service model homeowners need. Only consider Rex Moore if your project genuinely requires commercial design/build electrical expertise and you're prepared to thoroughly vet their residential capabilities through direct references.
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Frequently Asked Questions
Licensing permits Rex Moore to perform residential electrical work, but their documented expertise centers on commercial design/build projects. Without homeowner reviews or listed residential project types, you'll need to verify their residential service capabilities, crew familiarity with home electrical systems, and service model directly. Commercial contractors sometimes lack the scheduling flexibility and diagnostic approach residential customers expect.
Sierra Valley holds proper electrical licensing and customers specifically mention EV charger outlets and electrical work in their reviews. However, their electrical services appear focused on HVAC-related and home electrification projects rather than comprehensive electrical contracting. For complex electrical-only projects, verify their specific experience in your project type during consultation.
Sierra Valley's 22 years versus Rex Moore's 13 years is particularly relevant because Sierra Valley's experience is concentrated in residential work where they've navigated two decades of homeowner expectations, utility program changes, and HVAC technology evolution. Rex Moore's 13 years appears weighted toward commercial projects, meaning their residential experience may be significantly less than the licensure duration suggests.
The absence of reviews combined with commercial/industrial focus suggests Rex Moore either doesn't actively pursue residential work or hasn't built a residential customer base that generates feedback. For homeowners, this creates uncertainty around service responsiveness, communication style, and residential project execution that you'd normally assess through customer patterns. Request direct residential references before proceeding.
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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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