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Bayside Mechanical, Inc.

Heating & Air Conditioning
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Diamond Certified Company Report
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Bayside Mechanical, Inc.
203 SURVEYS
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  • Rating
16 CONSECUTIVE YEARS
SINCE FEBRUARY 2010
CERT 1626

Diamond Certified Ratings Dashboard

203

Verified Customers

Surveyed

Customer Loyalty

Customer Satisfaction

Helpful Expertise

READ ALL 203 SURVEY RESPONSES

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

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  • Survey Responses
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  • Researched Articles & Profile
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Diamond Certified Company Report SUMMARY UPDATE February 2025

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Bayside Mechanical, Inc.

Rated Highest in Quality and Helpful Expertise for 16 Consecutive Years.

Quick Summary

  • Diamond Certified since 2010
  • Provides sheet metal work and HVAC installation services for residential and commercial clients throughout the Bay Area
  • Available 24/7 for emergency services and repairs
  • Has its own sheet metal fabrication division

Top News Updated

COMPANY MILESTONES

Bayside Mechanical recently moved to a new location in Foster City and acquired new fabrication machinery to optimize its fabrication process.

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NEW PRODUCTS & SERVICES

Bayside Mechanical is offering new heating and cooling products that feature R-454B refrigerant and ultra-low NOx heat exchangers.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They worked on a water heater for a community I manage and they were quick to come right out. They had good customer service and communication.”

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From a recent Diamond Certified Survey Response: “They were very friendly. We had some tricky issues in terms of space constraints, but they resolved them quite nicely.”

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Trending Projects

Bayside Mechanical has worked on several notable design/build projects, including historic mansions, large labs and warehouses, restaurants, and new houses and condominiums.

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Bayside Mechanical, Inc.
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Diamond Certified Researched Articles on Bayside Mechanical, Inc.

researched article

A look at Bayside Mechanical's San Mateo headquarters

Bayside Mechanical, Inc. provides sheet metal work and heating, ventilating, and air conditioning (HVAC) installation services for residential and commercial clients throughout the Bay Area. The company can design, install, service, repair and upgrade all types of HVAC systems, and it also offers duct cleaning, testing and replacement services. It’s available 24/7 for emergency services and repairs, and its technicians use radio dispatch systems to ensure their response times are as fast as possible.

Owner Mazen Tawasha says Bayside Mechanical offers the personal feel of a family-oriented business and the expert knowledge and service of an experienced corporation. “We’re known for our innovative approach to HVAC service, but we also strive to be recognized for our world-class customer care.”

Bayside Mechanical offers several Green solutions designed to optimize its clients’ energy-efficiency—it can replace current HVAC equipment with smaller units and help homeowners who make system upgrades apply for federal tax credits of up to $1,500. Mr. Tawasha explains that those credits also cover 30 percent of the labor and materials involved in a new installation. To learn more or to see examples of past projects, he invites potential clients to visit www.baysideinc.com.

“We're committed to providing unique, professional experiences by delivering fast, honest, reliable service to our customers. We continue to build our business and reputation by anticipating their wishes, meeting their needs and exceeding their expectations. Our ultimate goal is to achieve 100 percent customer satisfaction–nothing else will do.”

A load calculation will ensure your HVAC system is the right size to fulfill your energy needs. In order to determine exactly how big or small your home’s heating or air conditioning system should be, your HVAC contractor needs to calculate the system’s heating and cooling capacity in relation to indoor comfort. The result is called the “load” of the home. A home’s load is partly dependent upon its square footage, but a true load calculation goes beyond that to include the building’s construction; orientation to the sun; R-value (a measurement of thermal resistance) of the insulation; number, size and placement of rooms, windows and doors; thermal efficiency of windows and doors; number and arrangement of floors; and climate.

Residential load calculations make use of mathematical formulas that take all these variables into consideration. Determining the load by using non-mathematical methods almost always leads to installing an oversized system, which results in increased initial costs, monthly utility bills and maintenance. It can also shorten the lifespan of the equipment by making it cycle on and off too frequently.

Who does the load calculation?
Your HVAC contractor should be able to perform a load calculation—the process has been computerized in recent years, so it’s not as time-consuming as it was in the past. If the contractor says it isn’t necessary, you may want to look elsewhere. In some areas, local utility companies will perform load calculations.

Why is it important to have a correctly sized HVAC system?
Having an improperly sized heating or cooling system can lead to multiple problems. Your cooling load consists of two parts: the temperature of the air (the sensible load) and the moisture or humidity in the air (the latent load). An oversized cooling system cools down the temperature very quickly, but it doesn’t run long enough to remove sufficient moisture from the air. Many people turn down the thermostat to make the air conditioner run longer, which increases utility costs. In some cases, the insufficient moisture removal resulting from oversized cooling equipment can lead to mold growth and other types of moisture-related damage.

A correctly sized cooling system runs long enough to “wring” moisture out of the air. This will allow you to be comfortable at a slightly higher thermostat setting and save you money on your utility bills. It’ll also take care of “mugginess” without making you feel too cold.

Maintaining customer satisfaction is a crucial aspect of any business, but it's even more important for heating and air conditioning companies that have earned the prestigious Diamond Certified award. For Bayside Mechanical, Inc., customer satisfaction begins and ends with providing the best possible service throughout every phase of a job, from the initial service call to the detailed follow-up. "Our service approach remains the same regardless of the size of the project," says owner Mazen Tawasha. "If a customer has a complaint or if something hasn't been done right, we'll send someone out to fix it right away."

Bayside Mechanical has been designing, installing, servicing, repairing and upgrading HVAC (heating, ventilating and air conditioning) systems and equipment throughout the Bay Area since 2004. The company serves both residential and commercial customers, and its experienced mechanics are trained to service all types of HVAC systems from top manufacturers such as Carrier, Trane and Goodman. For the convenience of its clients, it also offers 24-hour emergency service.

Unlike many HVAC firms, Bayside Mechanical keeps certified mechanical engineers on staff, which allows it to offer one-stop HVAC services that would otherwise be unavailable to its clients. "We handle the designs, drawings, installations and repairs, so our customers don't have to go anywhere else for mechanical work," explains Mr. Tawasha. "Since we do everything in-house, we can handle virtually any service problem. Most companies can install a furnace or perform duct work, but if a problem occurs on the job, they don't have the expertise to deal with it. We do."

Another distinctive feature of Bayside Mechanical is its dedication to environmentally-friendly business practices. The company is certified by Bay Area organization Build it Green; offers a wide variety of high efficiency, Energy Star-rated HVAC systems; and replaces large systems with smaller models to lower energy bills. "We can also help homeowners who make system upgrades apply for federal tax credits of up to $1,500," adds Mr. Tawasha. "Those credits cover 30 percent of the labor and materials involved in a new installation."

Diamond Certified Researched Capabilities on Bayside Mechanical, Inc.

Service Area

The Bay Area
Serving the Bay Area

Main Services

Heating & Air Conditioning
  • Ac Tune Ups
  • Air Conditioner Repair
  • Air Conditioning
  • Commercial Air Conditioning
  • Ductless Heating And Cooling Systems
  • Furnace Repair
  • Heat Pump Repair
  • Heating
  • Hvac Installation
  • Hvac Replacement
  • Mini Splits
  • Water Heater Repair

Additional Services

Heating
Air Conditioning

Company Info

Hours
Mon
07:30 am - 04:30 pm
Tue
07:30 am - 04:30 pm
Wed
07:30 am - 04:30 pm
Thu
07:30 am - 04:30 pm
Fri
07:30 am - 04:30 pm
Sat
Closed
Sun
Closed
Open Now
Mon – Fri: 7:30am – 4:30pm
Website
Contact
Bayside Mechanical, Inc.

Capabilities Table

Company Name
Bayside Mechanical, Inc.
Phone Number
Managers
Mazen Tawasha, Owner
Years in Industry
16
# of Employees
15
License
842690
Memberships
Better Business Bureau, San Francisco Chamber of Commerce
Insurance
Liability Insurance,
Workers' Compensation
Founded
2004
Customer Type
Commercial, Residential
Warranties & Guarantees
1-Year Warranty on Labor and Materials, Some Systems Have Longer Warranties on Equipment
Payment Accepted
american express,
discover,
mastercard,
visa

Certifications & Awards

diamond certified logo

Brands

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Key Factors

Bayside Mechanical, Inc. Established in 2004
Established in 2004
Bayside Mechanical, Inc. Residential & Commercial
Residential & Commercial
Bayside Mechanical, Inc. Appointments Available
Appointments Available
Bayside Mechanical, Inc. Live Phone Call Answers
Live Phone Call Answers
Bayside Mechanical, Inc. Diamond Certified Expert Contributor
Diamond Certified Expert Contributor

Select Photos From Bayside Mechanical, Inc.

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Bayside Mechanical, Inc.
Picture of Bayside Mechanical, Inc. - Bayside Mechanical, Inc.

Diamond Certified Expert Contributor Advice & Tips

Vincent Casale is an estimator at Bayside Mechanical, Inc., a Diamond Certified company since 2010. He can be reached at (650) 578-9080 or by email.

Vincent Casale is an estimator at Bayside Mechanical, Inc., a Diamond Certified company since 2010. He can be reached at (650) 578-9080 or by email.

Vincent Casale: Winds of Change

By James Florence, Diamond Certified Resource Reporter

SAN MATEO — After several years working on the corporate end of the construction industry, Vincent Casale was looking for a change of pace. As it happened, change came in the form of an entirely new livelihood. “After about 15 years in corporate sales and construction management, I wanted to get out of that world and work on a smaller scale,” he remembers. “One day, while I was on a jobsite, I met the owner of Bayside Mechanical. We got t...

Read Full Article - Vincent Casale: Winds of Change

Bayside Mechanical, Inc. Website and External Feeds

FAQs

By Bayside Mechanical, Inc.

Is a permit required for HVAC work? Can you help me get a permit?

Can you improve the efficiency of my ductwork and reduce the number of leaks?

Is improving the efficiency of an HVAC system really worth the cost?

How long have your employees been with you?

Do you provide any financing?

Bayside Mechanical, Inc. Ratings and Survey Responses

diamondcertified logo
Bayside Mechanical, Inc.
203 SURVEYS
  • star image
  • star image
  • star image
  • star image
  • star image
  • Rating
16 CONSECUTIVE YEARS
SINCE FEBRUARY 2010
CERT 1626

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Phone Survey Responsesfrom 203 Verified Customers

C.B.I.

I've been using Bayside Mechanical for a few years now, and I think they're the best. The quality of everything they've done for me has always been the best of the best.

They 100% know what they're doing, and they get the job done quickly.

Verified Customer of Bayside Mechanical, Inc., 1 of 203

10 Quality
Yes Loyalty
C.D.

I think they do an excellent job. I would recommend them without reservation.

They get the job done, and they are thorough. They are a company of their word.

Verified Customer of Bayside Mechanical, Inc., 2 of 203

10 Quality
Yes Loyalty
B.M.B.

They're reliable.

They're very efficient. It's always a positive experience when we work with Mazen.

Verified Customer of Bayside Mechanical, Inc., 3 of 203

10 Quality
Yes Loyalty
E. B. C.

You can depend on them and they easily deal with various changes in the construction. They are very knowledgeable and they produce the drawings that are required. They were easy to deal with. There were changes in the contract and they dealt with them easily. Their paperwork is impeccable.

Their sense of honor and integrity

Verified Customer of Bayside Mechanical, Inc., 4 of 203

10 Quality
Yes Loyalty
Debbie M.

I would say they got the job done faster than they even said they could. The young men, there was two of them, were very efficient and cautious around my house. They would take their shoes off, put booties on, and they were very respectful of my space and my house.

I actually liked that they did what they were supposed to do. They did the job in the time they said they were going to and they did the job they said they would do. It was terrific.

Verified Customer of Bayside Mechanical, Inc., 5 of 203

10 Quality
Yes Loyalty
T. M. H.

They did some work for a water heater for a community I manage and they were very quick to come right out when I called, had the parts we needed, and had good customer service, in terms of communication.

I liked that their communication with me was excellent throughout the project.

Verified Customer of Bayside Mechanical, Inc., 6 of 203

10 Quality
Yes Loyalty
Ruhiyyih M.

They were very friendly and able to solve our problems. We had some tricky issues in terms of space constraints to deal with, but they resolved it quite nicely.

Their flexibility

Verified Customer of Bayside Mechanical, Inc., 7 of 203

10 Quality
Yes Loyalty
T. V. S. M.

They were very responsive, very informative as far as our specific needs, they always let me know what was going on, and they're very detail-oriented.

They were timely, they got the job done, and I didn't have to worry about them throughout the process.

Verified Customer of Bayside Mechanical, Inc., 8 of 203

10 Quality
Yes Loyalty
Josh K.

They are great guys. They treated me fairly, did their work, and they were very reasonably priced and highly recommended.

The price

Verified Customer of Bayside Mechanical, Inc., 9 of 203

10 Quality
Yes Loyalty
C. E. O. C. I.

They are good people, they have good scheduling, and they have good quality in everything that they do.

They are knowledgeable and they do good quality work.

Verified Customer of Bayside Mechanical, Inc., 10 of 203

10 Quality
Yes Loyalty
A. E. C.

They are very efficient, organized, and they communicate very well. They are very prompt.

I feel they are very professional and very friendly. They are easy to approach to discuss things. They are very accommodating when there is an issue. I work very well with them.

Verified Customer of Bayside Mechanical, Inc., 11 of 203

10 Quality
Yes Loyalty
F. M.

They're very professional, they have very good pricing, and very informative engineers.

Everything, I had no trouble with them.

Verified Customer of Bayside Mechanical, Inc., 12 of 203

10 Quality
Yes Loyalty
T.C.R.

I'm satisfied. They pay attention to details, and they are very knowledgeable.

They're detail-oriented.

Verified Customer of Bayside Mechanical, Inc., 13 of 203

10 Quality
Yes Loyalty
Alan Z.

That they should use Rami, he was my contact and was really good to work with.

Rami was very attentive and thorough, and the pricing was competitive.

Verified Customer of Bayside Mechanical, Inc., 14 of 203

10 Quality
Yes Loyalty
E.S.C.

From my end, they have always followed through, they seem very professional.

They make my job easier.

Verified Customer of Bayside Mechanical, Inc., 15 of 203

10 Quality
Yes Loyalty
R.R.G.C.

They're professional, they know what they're doing, and they won't BS you.

I like the way Mazen runs his business. I've been using Bayside Mechanical for many years. They show up on time, and they perform the work without any problems.

Verified Customer of Bayside Mechanical, Inc., 16 of 203

10 Quality
Yes Loyalty
Robert R.

They are prompt, efficient, and they do excellent work. They are honest.

Overall, they are a top-notch company.

Verified Customer of Bayside Mechanical, Inc., 17 of 203

10 Quality
Yes Loyalty
B.C.

I feel like they are very professional and always available to assist.

They come quickly if we need them here.

Verified Customer of Bayside Mechanical, Inc., 18 of 203

10 Quality
Yes Loyalty
B. L. R. I.

They're responsive. They don't try to nickel and dime you for repairs.

The turnaround time, when I call, someone always calls me back.

Verified Customer of Bayside Mechanical, Inc., 19 of 203

10 Quality
Yes Loyalty
Helen L.

They did a very good job with the installation and the maintenance.

They followed through and they were on time.

Verified Customer of Bayside Mechanical, Inc., 20 of 203

10 Quality
Yes Loyalty
G. O. T. P.

I would definitely recommend them. I deal directly with the owner.

The prompt service, their prices, and their knowledge of the job

Verified Customer of Bayside Mechanical, Inc., 21 of 203

10 Quality
Yes Loyalty
Tom R.

I'm reluctant to tell others anything, but they did a good job.

They met the schedule, good people and good supervisors.

Verified Customer of Bayside Mechanical, Inc., 22 of 203

10 Quality
Yes Loyalty
R.H.C.

I think they are top notch they really compliment my business.

They are just on time, do the work, and conduct good business.

Verified Customer of Bayside Mechanical, Inc., 23 of 203

10 Quality
Yes Loyalty
Brett W.

I recommend them highly. I also recommend them to my clients.

Their knowledge and ability to take care of issues and troubleshoot.

Verified Customer of Bayside Mechanical, Inc., 24 of 203

10 Quality
Yes Loyalty
A. E. C.

I would highly recommend that they use Bayside Mechanical.

The attentiveness of their work

Verified Customer of Bayside Mechanical, Inc., 25 of 203

10 Quality
Yes Loyalty
Nazareth E.

Good service, and they have a good quality of service.

The service, I believe, because once I call them, they are there for us.

Verified Customer of Bayside Mechanical, Inc., 26 of 203

10 Quality
Yes Loyalty
Nick S.

They are very reliable, very efficient, and very good.

Customer satisfaction, being on time, and fast service

Verified Customer of Bayside Mechanical, Inc., 27 of 203

10 Quality
Yes Loyalty
K.P.M.

They have been good for me, they are always reliable.

They are always available, and their scheduling is pretty good.

Verified Customer of Bayside Mechanical, Inc., 28 of 203

10 Quality
Yes Loyalty
Nick S.

They're very honest, on time, an excellent company.

I like that they're very professional, clean, accurate, efficient, and that they know what they're doing.

Verified Customer of Bayside Mechanical, Inc., 29 of 203

10 Quality
Yes Loyalty
Mohammad S.

I've already tried to convince others to use them.

I would give them a "20". They come out when they say they are going to come, and they do a perfect job.

Verified Customer of Bayside Mechanical, Inc., 30 of 203

10 Quality
Yes Loyalty
S. G.

I would say they are a very reputable contractor.

I like that they are very responsive.

Verified Customer of Bayside Mechanical, Inc., 31 of 203

10 Quality
Yes Loyalty
Jon P.

I think they are reliable and know their stuff.

They are there when they say they will be, and they know how to troubleshoot really well.

Verified Customer of Bayside Mechanical, Inc., 32 of 203

10 Quality
Yes Loyalty
C. I.

They are a reliable and trustworthy contractor.

They have good communication skills and they are very transparent.

Verified Customer of Bayside Mechanical, Inc., 33 of 203

10 Quality
Yes Loyalty
A. P. H.

Very personable, detail-oriented, and fast work

That they were very fast and they did very clean, detail-oriented work.

Verified Customer of Bayside Mechanical, Inc., 34 of 203

10 Quality
Yes Loyalty
D.L.C

They're reliable and they know their business.

As I said, they are reliable and they know their business. They are there when we need them.

Verified Customer of Bayside Mechanical, Inc., 35 of 203

10 Quality
Yes Loyalty
A. B. E.

They are very reliable and very knowledgeable.

Technically, they know what they are doing.

Verified Customer of Bayside Mechanical, Inc., 36 of 203

10 Quality
Yes Loyalty
Robert R.

They're efficient, honest, and always on time.

I like the owner, Mazen. He's personable and he always goes the extra mile.

Verified Customer of Bayside Mechanical, Inc., 37 of 203

10 Quality
Yes Loyalty
B. W. P.

Honestly, I don't know off the top of my head.

They came when they promised and they have good customer service. They are friendly and they know what they're doing.

Verified Customer of Bayside Mechanical, Inc., 38 of 203

10 Quality
Yes Loyalty
K. P. M. C.

I would say that I am satisfied with them.

I like the quality of the service, in terms of their start time, finish time, and their pricing. They should stay the size they are, avoid getting bigger, because at this size, their service is really good.

Verified Customer of Bayside Mechanical, Inc., 39 of 203

10 Quality
Yes Loyalty
Anton J.

Good quality service for the price I paid

The quality of service, they know their stuff.

Verified Customer of Bayside Mechanical, Inc., 40 of 203

10 Quality
Yes Loyalty
B. M. C.

They are all good, thorough workers.

I liked their prompt response and that they knew what they were doing.

Verified Customer of Bayside Mechanical, Inc., 41 of 203

10 Quality
Yes Loyalty
CG A.

They were very quick and effective.

That they have a lot of workers

Verified Customer of Bayside Mechanical, Inc., 42 of 203

10 Quality
Yes Loyalty
H. G.

They're reliable and knowledgeable.

I like that they are knowledgeable.

Verified Customer of Bayside Mechanical, Inc., 43 of 203

10 Quality
Yes Loyalty
K.P.M.

Honest, reliable, and a fair value

The entire team

Verified Customer of Bayside Mechanical, Inc., 44 of 203

10 Quality
Yes Loyalty
T.M.

They are reliable and competitive.

Their responsiveness

Verified Customer of Bayside Mechanical, Inc., 45 of 203

10 Quality
Yes Loyalty
M. C.

They have done what I needed.

Workmanship

Verified Customer of Bayside Mechanical, Inc., 46 of 203

10 Quality
Yes Loyalty
P. S. O. A.

That they are very responsive

Their follow-up

Verified Customer of Bayside Mechanical, Inc., 47 of 203

10 Quality
Yes Loyalty
Denise G.

I'm glad I found these guys.

Knowledgeable, patient, and very clear in their explanation of services

Verified Customer of Bayside Mechanical, Inc., 48 of 203

10 Quality
Yes Loyalty
A.R.

I highly recommend them.

They are very good at communication, they were on time, and when the job was done they get out quickly.

Verified Customer of Bayside Mechanical, Inc., 49 of 203

10 Quality
Yes Loyalty
R.P.P.

They are trustworthy.

No hassle on my end

Verified Customer of Bayside Mechanical, Inc., 50 of 203

10 Quality
Yes Loyalty