Compare Local Pros
Diamond Heating And Air vs Coldwell Energy
Placer Electrical Contractors Comparison · Updated March 2026
You're comparing an HVAC contractor with 36 years of heating and cooling expertise to a solar energy installer with 14 years specializing in renewable systems—these companies serve completely different needs.
| Diamond Heating And Air | Coldwell Energy | |
|---|---|---|
| Rating | ★ 4.4 | ★ 4.8 |
| Years Licensed | 36 years | 14 years |
| License # | 586277 | 969149 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Roseville, CA | Rocklin, CA |
| Website | diamondheatingandair.net | coldwellenergy.com |
Key Differences
What Customers Say
Diamond Heating And Air
Customers consistently highlight Diamond's emergency responsiveness during HVAC crises, with same-day availability and direct owner communication when heating or cooling systems fail.
Coldwell Energy
Customers emphasize Coldwell's smooth installation processes for planned solar projects, with professional workmanship on both residential and larger agricultural solar arrays.
Key Takeaway: Diamond's reviews focus on urgent problem-solving for HVAC emergencies while Coldwell's reflect satisfaction with planned renewable energy installations—fundamentally different service contexts in separate industries.
Customer Reviews
Diamond Heating And Air
You are a life saver. Bob showed up and was able to get us up and running again. I am forever grateful for this upstanding gentleman.
Our capacitor went out in July when the temp was going to be 114. I was desperate for anyone that wasn't booked a week out and they delivered! Same day, had us up and running and not melting. Great se...
First class! My 38 year old air conditioner was failing during a recent heatwave. I called on a Sunday and his wife answered the phone to my surprise. That's almost unheard of these days. She was extr...
Coldwell Energy
Update: After posting this review, I was contacted directly by Coldwell Solar's president, Sean, who assigned a team to work on our behalf to get the issues addressed. Coldwell has done an outstanding...
Super excited to be work with Coldwell Solar team on our next solar project. Check out their community solar program and the renewable solar credits. Huge opportunities to save on energy costs.
Coldwell Solar installed two arrays for us. The whole process went extremely smooth and the systems are working great.
Consider Diamond Heating And Air if...
- ✓ You need heating or air conditioning repair, replacement, or installation rather than solar energy systems
- ✓ You're facing an HVAC emergency during extreme weather and need same-day response capability
- ✓ You want a contractor with 36 years diagnosing hidden problems in aging heating and cooling systems
- ✓ You value direct owner involvement and accessible communication for urgent service needs
Consider Coldwell Energy if...
- ✓ You're installing solar panels on your home or agricultural property rather than HVAC equipment
- ✓ You're planning a renewable energy project with tracker arrays or fixed solar systems
- ✓ You need expertise in solar permitting, grid connection, and system design rather than heating and cooling
- ✓ You want established experience specifically in solar technology and installation methods
Questions to Ask Before Hiring
- → Confirm which contractor actually provides the service you need—HVAC work requires Diamond, solar installation requires Coldwell
- → If you need both solar and HVAC work, ask each contractor about coordination timing since solar installation may affect roof access for HVAC equipment
- → Ask Diamond about their experience with HVAC systems in homes that have or will have solar panels, as energy efficiency considerations may differ
- → Ask Coldwell whether their solar designs account for existing HVAC loads and whether they coordinate with HVAC contractors on system sizing
The Bottom Line
This comparison only makes sense if you're unclear about what service you actually need. If your air conditioner is broken, your furnace needs replacement, or you need any heating and cooling work, hire Diamond Heating And Air—their 36 years of HVAC expertise and emergency response capability are what you need. If you're installing solar panels on your home or property, hire Coldwell Energy—their 14 years specializing in renewable energy systems is the relevant experience. Both are properly licensed and insured within their respective trades. Don't hire an HVAC company for solar work or a solar company for HVAC work.
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Frequently Asked Questions
No. Diamond Heating And Air specializes exclusively in HVAC systems and doesn't install solar. Coldwell Energy focuses on solar installations and doesn't service heating or cooling equipment. You would need to hire both companies separately if you need both types of work.
Diamond's 36 years of experience is in HVAC, not solar energy systems, so that experience doesn't transfer to solar installation expertise. For solar work, Coldwell's 14 years in renewable energy is the relevant experience. The licensing length only matters within each contractor's actual specialty.
This is a coordination question to discuss with both contractors. HVAC replacement should generally happen first or simultaneously since new high-efficiency systems affect your electrical load calculations, which determines proper solar system sizing. Ask Coldwell how they calculate system size when HVAC equipment age is a factor.
Both operate in the same region, which helps with permitting familiarity and scheduling logistics, but you'll need to manage coordination yourself since they work in different trades. Ask each about their typical project timelines and whether they've worked on properties where the other company also provided services.
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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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