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Ilum Energy Solutions vs RPM HVAC Service
Sacramento Electrical Contractors Comparison · Updated March 2026
These companies serve entirely different needs: Ilum installs solar systems while RPM handles heating and cooling.
| Ilum Energy Solutions | RPM HVAC Service | |
|---|---|---|
| Rating | ★ 4.6 | ★ 4.9 |
| Years Licensed | 4 years | 11 years |
| License # | 1092865 | 995282 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Sacramento, CA | Citrus Heights, CA |
| Website | ilumsolar.com | www.rpmhvacservice.com |
Key Differences
What Customers Say
Ilum Energy Solutions
Customers consistently praise Ilum for completing solar installations significantly faster than competitors while maintaining professional workmanship and responsive communication throughout the permitting and inspection process.
RPM HVAC Service
RPM earns recognition for exceptional service availability including same-day appointments during emergencies, with customers highlighting fair pricing, thorough explanations, and the personal attention of a family-run business.
Key Takeaway: Ilum's feedback centers on project speed and smooth coordination of complex solar installations, while RPM's reviews emphasize immediate availability for urgent repairs and transparent pricing without upselling pressure.
Customer Reviews
Ilum Energy Solutions
I had solar installed at my home. So far it has been great, and service has been great. Thank you Broc!
Knowledgeable, patient, professional, great team, fully understand Solar.
Would have been a 5, but read on. Had ilum solar do a solar system on my roof and had no trouble initially, then had 1 issue with them regarding MPU (master panel upgrade). That issue resulted in th...
RPM HVAC Service
Great communication. On time. Provided various scenarios. Started with the most obvious/lowest price item which fixed it for now. My system is old, so fingers crossed it keeps going.
Representative showed up on time got to work right away. Found an unexpected issue that saved us a major repair work. Got the system working very happy.
Great service. They were out to see me the same day I called.
Consider Ilum Energy Solutions if...
- ✓ You're installing solar panels, expanding an existing solar array, or adding battery storage to your home
- ✓ Fast project completion is a priority and you want to avoid months-long installation timelines common with some solar companies
- ✓ You value responsive communication during the multi-step process of permitting, utility coordination, and inspection scheduling
- ✓ You're interested in smart home device installation as part of an incentive package with your solar project
Consider RPM HVAC Service if...
- ✓ You need HVAC installation, repair, or maintenance services for heating or cooling systems
- ✓ Same-day or emergency service availability matters because your system failed during extreme weather
- ✓ You prefer working with an established, family-run business with high owner involvement
- ✓ You want transparent pricing without pressure to upgrade to unnecessary equipment or services
Questions to Ask Before Hiring
- → For Ilum: How many solar installations has your team completed in the past year, and can you provide references from projects similar in size and complexity to mine?
- → For RPM: What is your typical response time for emergency service calls, and do you offer maintenance agreements for ongoing system care?
- → For either: What does your warranty cover, who handles warranty service, and what happens if your company is unavailable when I need support?
The Bottom Line
This comparison only helps if you're evaluating different projects or considering both trades. For solar installation, battery storage, or system expansions, Ilum Energy Solutions offers fast timelines and responsive project management with four years of successful solar work. For heating and cooling needs, RPM HVAC Service provides established expertise with 11 years of experience, high owner involvement, and strong marks for emergency availability and transparent pricing. Both companies carry proper insurance and bonds. Choose based on which service you actually need, then evaluate each company's specific qualifications for your project complexity and timeline requirements.
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Frequently Asked Questions
No, these are licensed for different trades. Ilum specializes exclusively in solar photovoltaic systems and cannot legally perform HVAC work. RPM focuses on heating and cooling systems and does not install solar panels. You would need to hire both companies separately if you have projects in both categories.
It matters most when complications arise. RPM's 11 years means they've encountered more unexpected issues like unusual roof structures, complex ductwork scenarios, or permit complications. Ilum's four years is sufficient for standard residential solar installations, but newer companies have less experience troubleshooting unusual situations. Ask Ilum specifically about their team's prior experience before forming the company.
This comparison doesn't apply since they serve different needs with different pricing structures. Solar installations are major capital investments typically costing $15,000-$40,000, while HVAC services range from $100 repair calls to $10,000+ system replacements. RPM's feedback specifically mentions competitive pricing and transparency, while Ilum's reviews focus more on speed and communication than cost.
Address HVAC first if the system is failing or inefficient, as solar panel sizing calculations depend on your home's energy consumption after HVAC efficiency is optimized. A new efficient HVAC system will reduce your electricity needs, allowing you to install a smaller, less expensive solar array. Both companies can coordinate timing if you explain your dual-project plans.
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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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