Compare Local Pros
Renergy Roofing vs Hassler Heating And Air Conditioning
Contra Costa General Contractors Comparison · Updated March 2026
You're comparing a roofing specialist with 1 year licensed to an HVAC veteran with 26 years—these contractors serve completely different trades.
| Renergy Roofing | Hassler Heating And Air Conditioning | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 1 years | 26 years |
| License # | 1127157 | 770180 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Walnut Creek, CA | El Cerrito, CA |
| Website | renergyroofing.com | www.hasslerheating.com |
Key Differences
What Customers Say
Renergy Roofing
Customers consistently highlight Renergy's transparent pricing communication, responsive scheduling, and organized project management with clean worksites throughout roof replacements.
Hassler Heating And Air Conditioning
Customers repeatedly mention Hassler's thorough diagnostic approach with photo documentation, detailed technical explanations, and responsive service during heating emergencies.
Key Takeaway: Renergy's feedback emphasizes project transparency and communication during installations, while Hassler's reviews focus on diagnostic thoroughness and technical expertise across varied system types.
Customer Reviews
Renergy Roofing
Moshe was great to work with. Not only was his quote very competitive but he also provided recommendations for underlayment that would be best for the area that I am planning to install solar panels. ...
Couldn't have asked for a better experience! Renergy Roofing has been amazing to work with, and I especially want to thank Moshe for all of his help throughout this whole process. He really went abov...
After getting several quotes, I decided to go with Renergy Roofing. Moshe was straightforward and transparent about pricing-no hidden fees, no cutting corners, just honest work at a fair price. Highly...
Hassler Heating And Air Conditioning
We had Hassler Heating & Air replace the ductwork under our house, and the experience was excellent from start to finish. The team was professional, punctual, and clearly knew what they were doing. Th...
Friendly, intelligent service. Thoroughly checked my heating system and showed in great detail what the problems are. The technician provided detailed inspection and we both agreed that it will be nec...
The crew was professional and courteous while being in my home which was very appreciated. Larry in particular was kind enough to answer my many questions to ensure I understood my new system so that ...
Consider Renergy Roofing if...
- ✓ You need roofing work (replacement, repair, inspection, or leak diagnosis) and Renergy specializes exclusively in this trade
- ✓ You value highly responsive communication and transparent pricing from the start, which customers consistently mention
- ✓ Your roof project involves coordination with solar installations or specialty materials where detailed planning matters
- ✓ You're comfortable working with a newer business in exchange for attentive owner involvement and organized project management
Consider Hassler Heating And Air Conditioning if...
- ✓ You need HVAC services including furnace replacement, heat pump installation, air conditioning, or ductwork projects
- ✓ You want a contractor with proven business longevity who will likely still be available for warranty work and future system maintenance
- ✓ Your project involves complex diagnostics for heating or cooling failures where 26 years of troubleshooting experience provides real value
- ✓ You appreciate thorough inspections with photo documentation and detailed technical explanations of system conditions
Questions to Ask Before Hiring
- → For Renergy: Ask for references from roof projects completed in your first year of operation, and confirm warranty terms including how long the company guarantees workmanship
- → For Renergy: Ask about your experience with the specific roofing material or system type on your home, especially if you have tile, slate, or specialty roofing
- → For either: Confirm project timeline expectations and ask about their current scheduling—how soon they can start and estimated completion time
The Bottom Line
These contractors don't compete—choose based on which trade you need. For roofing projects, Renergy Roofing offers specialized service with strong communication and organized management, though their 1-year licensed status means asking pointed questions about experience handling complications and long-term warranty availability. For HVAC work, Hassler Heating And Air Conditioning provides 26 years of proven expertise, business stability, and thorough diagnostic capabilities. Both carry proper insurance and bonding. If you need both trades, hire each for their specialty and coordinate scheduling between them.
Get Up to 3 Free Quotes
Compare prices from licensed, verified contractors
Frequently Asked Questions
Yes, these contractors serve entirely different trades and don't compete with each other. Many homes undergoing renovations or addressing deferred maintenance need both roofing and HVAC work. Just coordinate scheduling so roof work doesn't interfere with HVAC equipment or new ductwork installations.
Being licensed for only 1 year means less proven track record for handling unexpected complications that emerge during tear-offs or for being available years later if warranty issues arise. However, the company carries proper insurance and bonding, and customer feedback shows organized project management. Ask specifically about the owner's prior roofing experience before obtaining their own license.
Experience matters significantly for both trades, but differently. HVAC systems require ongoing diagnostics, load calculations, and troubleshooting across many equipment brands and configurations where pattern recognition from thousands of service calls helps. Roofing projects involve managing installation quality and diagnosing hidden structural or water damage issues that reveal themselves during tear-off—experience helps anticipate and price these risks upfront.
Coordinate carefully—roof work should typically happen before or simultaneously with HVAC installations to avoid damaging new equipment with roofing debris or requiring extra equipment protection. If installing a heat pump or condenser, discuss placement with both contractors. Some HVAC ductwork runs through attics where roofing work might require access.
Looking for the Best?
See our ranked list of top general contractors in Contra Costa.
Other Contra Costa General Contractors Comparisons
Apollo Roofing Company
★ 5.0
Hassler Heating And Air Conditioning
★ 4.9
Got Watts?
★ 4.9
Hassler Heating And Air Conditioning
★ 4.9
Bay Valley Roofing & Solar
★ 4.8
Hassler Heating And Air Conditioning
★ 4.9
High Definition Solar
★ 4.1
Hassler Heating And Air Conditioning
★ 4.9
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.
Get in Touch
Have questions or feedback? We'd love to hear from you.