Independently Rated Highest in Quality
T h i r d
Consecutive Year
Originally Earned:
April 2014
We declare that Hassler Heating & Air Conditioning HAS QUALIFIED for and continues to meet the Ongoing Research and Rating Requirements for Diamond Certified® status.
Certificate #2141
(510) 400-5759

Tim Hassler is CFO of Hassler Heating & Air Conditioning.

Hassler provides a wide range of HVAC and home performance services, from maintenance, repairs and complete system replacements to energy efficiency upgrades such as air draft sealing, crawlspace moisture treatment systems and insulation installation. Hassler is a participating contractor in PG&E’s Energy Upgrade California Advanced Home Upgrade program, which offers homeowners up to $6,500 rebates for home efficiency improvements. Hassler takes a scientific, “whole house” approach to improve its customers’ indoor health, energy efficiency and home comfort.

CFO Tim Hassler says Hassler’s ability to act as both a full-service HVAC contractor and a home performance company has been a crucial aspect of its success. “It’s rare to find a contractor that handles both sides. Our clients call us and refer us to others because they know we’re passionate about helping people optimize their energy efficiency and improve their home comfort and health. We offer the highest value in the industry because we’re able to adapt our services to each unique situation.”

Hassler’s experienced installation and service technicians are continually trained on how to educate clients about their homes. “Many homes in the Bay Area are not as healthy as they should be,” says Mr. Hassler. “One common problem is poor attic and crawlspace ventilation, which can be easily fixed or mitigated in most cases with proper diagnoses and implementation.”

Company Philosophy

“Our goal is to strive to make an impact on our clients’ daily lives by improving their home comfort, energy efficiency and indoor health while helping the State of California meet its energy reduction goals one home at a time.”

Serving Alameda, Contra Costa and Marin Counties

HVAC Installations & Repairs
Home Performance Energy Audits & Inspections
Energy Upgrade Measures

Carrier
Carrier

Comparative Summary

Maintaining customer satisfaction is a crucial aspect of any business, but it’s even more important for home energy auditors that have earned the prestigious Diamond Certified award. For Hassler Heating & Air Conditioning, the key to achieving and maintaining high levels of customer satisfaction is simple: provide high-quality, fairly priced products and services that make its clients...

Frequently Asked Questions

Q: How do I improve the air quality inside my home?
A: "We offer more than a dozen solutions for indoor air quality. We’ll give you a list of all the options that are available to you and help you make a decision that meets your particular needs and budget. "
Q: Can you balance the temperature in my home if I have rooms that are too hot or too cold?
A: "Yes. Uneven temperature usually indicates a ductwork balancing issue, and we can help with that. Our general contracting license allows us to work on ventilation, insulation, ductwork, HVAC units and other components that might contribute to...
Q: Is replacing my HVAC system my only option for fixing temperature inconsistencies inside my home?
A: "No. Some companies tell their customers that their only option is to replace their HVAC systems, but we don’t believe in saddling our clients with extra costs if there are other options. We’ll perform an evaluation of your home a...

Industry Info

If you’re a homeowner, consider the benefits of an energy audit.
Home energy audits survey the use of energy in a home by showing where energy is lost through inadequate insulation, duct cracks, ventilation problems, faulty HVAC systems, old appliances, and other systems and materials within the home. A good home...
Findings based on statistically reliable research from 150 surveys

Customer Satisfaction

Survey Question: On a scale of 1 to 10 how satisfied were you with the quality you received?
Chart.

Company Credentials

Workers Compensation
Liability Insurance
License Verification
Business Practices
Current Complaint File

Customer Loyalty

Survey Question: If you needed this product or service in the future, would you use this company again?
Chart.
93%
n = 150

Diamond Certified Qualification

Based on 150 customer surveys, we declare
Hassler Heating & Air Conditioning
has passed all rating steps and has earned
The Diamond Certified Award
No. 2141
Continuously qualified since April 2014.
David Pak
Director of Ratings Research
American Ratings Corporation

Verbatim Survey Responses From Only Verified Customers

Jeanine S. Verified Customer Name
"They are well organized and efficient."
Research conducted by American Ratings Corporation. Ratings Methodology

Company Capabilities Table

Hassler Heating & Air Conditioning
(510) 400-5759
DCID5108483030

Mon – Fri: 7am – 6pm
Sat: 8am – 5pm

Serving Alameda, Contra Costa and Marin Counties

Tim Hassler, CFO; Mike Hassler, President
15
19
770180
Liability Insurance, Workers' Compensation
Better Business Bureau, El Cerrito Chamber of Commerce
Angie’s List Super Service Award (2011-2013)
1999
HVAC Installations & Repairs, Home Performance Energy Audits & Inspections, Energy Upgrade Measures
Carrier
2,500
Commercial, Residential
10-Year Warranty on Installations with Continued Maintenance
6 Months No Interest

Photo & Video Gallery

Survey Responses For

Hassler Heating & Air Conditioning

Hassler Heating & Air Conditioning: Average 8.9 out of 10 based on 150 unique customer surveys of customer satisfaction.
Jeanine S. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are good, but very expensive."

"They are well organized and efficient."

Jennifer M. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are very knowledgeable."

"I chose them, because they are super knowledgeable about energy efficiency, and I used them for the 'Upgrade California'."

Jasmine S. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are amazing. I needed work done within a certain time frame, and they were able to get someone on the jobsite and completed the work within the time frame that I had."

"I liked that they were efficient, the staff and their service."

Sarah O. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are super available and professional."

"They are knowledgable."

Monica L. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They were very knowledgeable, and they were very efficient when doing their work."

"Their friendliness, the fact that they were descriptive while they were doing the service, and they kept me informed of all the work they were doing."

Matthew K. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Just that they showed up, the service was great, and they took care of the issues. Also, they charged me exactly what they quoted me. "

"I think in general terms, professionalism"

Landon J. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"That they're professional"

"Well, actually, we went there because we live nearby and saw the sign. We don't recall anything specific. They did everything nicely and left. Things have been working well since then. "

Jennifer L. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are on top of things, they listen, and they respond to peoples needs. They did a nice job installing everything."

"They did a really great job of installation and integrating with my current system. I had a heater already, and they integrated an air conditioning unit. They added zoning to the house."

Julie H. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I thought that the technician who came out was very professional and helpful. I thought that he was very trustworthy. This was a long time ago, so I don't remember his name. "

"I don't really recall. They were recommended to us by our Realtor."

Carlos C. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They were satisfactory."

"They were satisfactory."

Julee C. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are really honest. They were not just trying to get my business. I've used them multiple times, and I trust them."

"They are honest."

Scott H. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They were reliable and knowledgeable. "

"The technician was really professional and easygoing."

Julie G. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Mike came out on his day off of work and spent some time with us on the phone providing great information."

"Their commitment and dedication to their work"

Raquel C. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They communicate well and are on time."

"They gave me all the information I needed and more."

Jody S. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They did the work that needed to be done. "

"I really liked them, they did the work that needed to be done, and I felt confident with their opinion about the previous work that had been done incorrectly."

Ella K. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are very good and responsive. They put in a great system, and I've had no issues with it."

"I haven't had any trouble at all."

Catherine D. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They have a very competitive price and they delivered on what they promised. They have good quality and they're very prompt. It's a fabulous company."

"Everything that they did was very professional, but I particularly liked dealing with Eddie."

Connie S. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"It's incredibly well run and the communication happens the way it should. They're very smart when they come to repair something and the people are great."

"They're totally friendly, responsive, and prompt with appointments. They really think about how something could be repaired and what could be wrong with it. I have a funky old furnace and they've done a great job with it. I think they're a terrific outfit."

David H. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They're professional and extremely knowledgeable. They really understand your situation and make recommendations, rather than just trying to sell you stuff."

"I liked their efficiency."

Heather M. Verified Hassler Heating & Air Conditioning Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I would recommend them. They were helpful."

"They came out and replaced the filter."