Compare Local Pros
Diamond Heating And Air vs Iknow Electric
Placer Electrical Contractors Comparison · Updated March 2026
You're comparing an HVAC specialist with 36 years of experience to an electrical contractor with 6 years—these serve completely different home systems.
| Diamond Heating And Air | Iknow Electric | |
|---|---|---|
| Rating | ★ 4.4 | ★ 5.0 |
| Years Licensed | 36 years | 6 years |
| License # | 586277 | 1063063 |
| Workers' Comp | ✓ Yes | — |
| Bond Amount | $25,000 | $25,000 |
| Location | Roseville, CA | Rocklin, CA |
| Website | diamondheatingandair.net | www.iknowelectric.com |
Key Differences
What Customers Say
Diamond Heating And Air
Diamond customers consistently emphasize emergency availability during heat events, with same-day response, direct owner scheduling, and technicians arriving with necessary parts already on vehicles.
Iknow Electric
Iknow Electric customers focus on quick scheduling, thorough explanations of electrical issues discovered during work, and clean job sites after completion.
Key Takeaway: Diamond's feedback centers on crisis response capability during system failures, while Iknow's reviews highlight diagnostic thoroughness in identifying underlying electrical problems beyond the original service request.
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...
Iknow Electric
I love being able to give a "hell yeah" to any specialist and Erik is awesome. We moved into a place that didn't have an EV charger and he was able to get everything done on-time and the highest quali...
I hired Iknowelectric to install Tesla Wall charger in my garage. Erik showed up right on time, explained everything clearly, and worked efficiently. The job was completed neatly, and they cleaned up ...
Called and Erik showed up within an hour. My whole house fan and AC unit weren't working. He diagnosed the electrical problem quickly and fixed it better than it previously was. I plan on having hi...
Consider Diamond Heating And Air if...
- ✓ You need HVAC services including air conditioning repair, heating system work, or full system replacement—this is Diamond's exclusive focus with 36 years of specialized experience
- ✓ Your air conditioning or heating system fails during extreme weather, as Diamond has established emergency response capabilities during temperature crises
- ✓ You want full workers compensation coverage in place, eliminating your liability risk if someone is injured while working on your property
- ✓ Your HVAC system is older or has a complex history, where Diamond's three decades of diagnosing equipment problems across changing technologies becomes valuable
Consider Iknow Electric if...
- ✓ You need electrical work such as EV charger installation, panel upgrades, circuit repairs, or lighting installations—this is Iknow's trade specialty
- ✓ You're installing a Tesla or other EV charger, which appears frequently in Iknow's completed projects with positive setup assistance feedback
- ✓ You're comfortable accepting the liability risk of no workers compensation insurance and will verify your homeowner's policy covers contractor injuries
- ✓ You value owner-performed work and direct communication with the person actually doing the electrical installation
Questions to Ask Before Hiring
- → For Iknow Electric: Ask directly about liability coverage and confirm with your homeowner's insurance that you're protected if the owner is injured while performing electrical work at your property
- → For Iknow Electric: Ask whether any helpers or subcontractors might be brought to your project, and if so, what coverage protects them
- → For either company: Request references from projects similar to yours in scope and complexity, particularly if your work involves older home systems or unusual configurations
The Bottom Line
These contractors serve entirely different home systems, so choose based on what you actually need fixed or installed. If you need HVAC work, Diamond Heating And Air offers veteran-level experience, full insurance protection, and proven emergency response capabilities. If you need electrical services like EV charger installation or panel upgrades, Iknow Electric provides experienced owner-performed work with fast availability—but you must address the workers compensation gap by confirming your homeowner's insurance covers contractor injuries before signing any agreement. Don't hire based on which company seems better overall; hire the appropriate trade specialist for your specific project.
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Frequently Asked Questions
Yes, these contractors serve complementary needs—Diamond for your heating and cooling systems, Iknow for electrical work like panel upgrades or EV chargers. Many home projects require coordination between trades. Just ensure both contractors communicate about any shared considerations like electrical capacity for new HVAC equipment or panel space for additional circuits.
It's a real liability concern. If the owner or anyone helping with your electrical work is injured on your property, you could be personally responsible for medical costs and lost wages if your homeowner's insurance doesn't cover it. Call your insurance agent before hiring to understand your exposure. This is less of an abstract risk with electrical work given the injury potential.
Even simple HVAC repairs benefit from deep experience because seasoned technicians quickly identify whether a failing capacitor signals a larger compressor problem or whether your system is near end-of-life. Diamond's decades of experience mean faster accurate diagnosis and realistic guidance about whether to repair or replace. For straightforward fixes, however, any qualified HVAC contractor should handle the work competently.
Six years places Iknow Electric solidly in the experienced category for residential electrical work, and panel upgrades appear regularly in their completed projects. Complex electrical work requires careful code compliance and safety practices, which licensed electricians learn relatively early in their careers. Ask specifically about their experience with your home's panel type and age, and request references from similar panel upgrade projects.
Looking for the Best?
See our ranked list of top electrical contractors in Placer.
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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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