Will I wait a long time for your contractors to show up?

No. We give you a two-hour appointment window. We will also keep you updated on the technicians arrival time.

How are your warranties?

Excellent. For new installations, it’s five years on labor and parts that we furnish. For repairs, it’s two years. Plus, we offer a 20-year warranty on complete copper repiping jobs and sewer replacements. As always, your complete satisfaction is our highest priority.

Do you have any thoughts for basic, everyday energy savings?

First and foremost, get leaky faucets repaired. A drip can waste as much as 150 gallons a day. Be sure to check under sinks for moisture or small leaks.

What about maintenance for tankless water heaters?

A tankless water heater should be maintained on a yearly or every other year basis to keep the manufacturers’ warranty in effect. It is important to regularly service the tankless in order to keep it running efficiently. Some of the critical maintenance procedures would be to clean the inlet filter, check and clean the flame sensor rod, check for proper combustion, check for water and gas leaks and flush the heat exchanger.

Should my toilet be maintained as well?

Toilet leaks can be wasteful and expensive. First, you want to make sure the toilet tank fills only after you flush and doesn’t run continuously. At least once a year, you should also check for leaks by adding a small amount of food coloring to the tank and then checking the bowl later. If you see coloring in the bowl, water is seeping through from the tank.

ALBERT NAHMAN PLUMBING, HEATING AND COOLING - 622 Surveys, Videos, Articles, & More

Name: Albert Nahman Plumbing, Heating and Cooling - Diamond Certified Video Profile
Uploaded: 2023-01-12T19:35:46Z
Channel: Diamond Certified Resource

Diamond Certified Researched Articles on Albert Nahman Plumbing, Heating and Cooling

Albert Nahman Plumbing, Heating and Cooling is a leading provider of plumbing and HVAC services in the Bay Area. The team is proud to celebrate 45 years of reliably caring for its customers and community.

The locally owned and operated company has built a strong reputation as “The Peace of Mind Folks” by consistently delivering high-quality plumbing, heating, and cooling products and services to every client. “We believe that a customer well-served is one who’ll stay with us and recommend us to friends and family,” says General Manager Marcus Mosley.

Albert Nahman Plumbing, Heating and Cooling offers a variety of maintenance plans for all of the different systems in a home—including plumbing, heating and cooling, and tankless water heaters—which helps customers prevent inconvenient and costly breakdowns. “Our service agreement customers also benefit from discounts on repairs and installations, which more than offset the yearly investment and provide for true ‘Plumbing and Comfort Peace of Mind,’” adds Mr. Mosley.

Marcus Mosley, General Manager

Diamond Certified Researched Capabilities on Albert Nahman Plumbing, Heating and Cooling

Service Area

Alameda County
Contra Costa County

Serving All of Alameda and Contra Costa Counties, Including Oakland, Berkeley, San Leandro, Piedmont, Lafayette and Orinda

Main Services

Plumbing

Commercial Plumbing
Drain Cleaning
Emergency Plumber
Gas Pipe Repair
Plumbing Services
Sewer Pipe
Toilet Repair
Water Heater Installation
Water Heater Repair
Water Heater Replacement
Water Lines

Additional Services

Plumbing & Heating Installation, Repair & Service
Sewer & Drain Cleaning
Sewer Video Inspections & Certification
Trenchless Sewer Replacements & Repairs
Seismic Gas Valves
Water Heater Installation & Repairs
Water Main Replacements & Copper Piping
Repipes
Sewage Ejection & Effluent Pumps
Duct Replacement
Tankless Water Heater Installation & Repair
Cooling Repair & Installation

Company Info

Hours

Mon

12:00 am - 11:59 pm

Tue

12:00 am - 11:59 pm

Wed

12:00 am - 11:59 pm

Thu

12:00 am - 11:59 pm

Fri

12:00 am - 11:59 pm

Sat

08:00 am - 10:00 pm

Sun

09:00 am - 10:00 pm

Closed

Mon – Fri: Open 24 Hours

Sat: 8am – 10pm

Sun: 9am – 10pm

Website

Contact

Albert Nahman Plumbing, Heating and Cooling

(510) 859-3990

Capabilities Table

Company Name

Albert Nahman Plumbing, Heating and Cooling

Website

https://albertnahmanplumbing.com/

Phone Number

(510) 859-3990

DCID Number

DCID5104403147

Managers

Marcus Mosley, General Manager

Years in Industry

# of Employees

License

1083634

Memberships

Air Conditioning Contractors of America (ACCA), PHCC of California, Radiant Professionals Alliance (RPA), Better Business Bureau (A+ Rating)

Insurance

Liability Insurance,

Workers' Compensation

Founded

1981

Customer Type

Commercial, Residential

Warranties & Guarantees

5-Year Warranty on Company-Provided Equipment, 5-Year Transferable Warranty on Sewer Laterals and Full Replacements, 2-Year Warranty on Whole House Copper Repipes and Water Services

Payment Accepted

american express,

mastercard,

visa

Select Photos From Albert Nahman Plumbing, Heating and Cooling

1 of 12

Picture of A fleet of vibrant yellow service trucks stands ready, reflecting Albert Nahman Plumbing, Heating and Cooling's commitment to excellence. Known for their top-rated quality, they embody the company's dedication to superior service. Copyright ©2025 Diamond Certified Resource

- Albert Nahman Plumbing, Heating and Cooling

A fleet of vibrant yellow service trucks stands ready, reflecting Albert Nahman Plumbing, Heating and Cooling's commitment to excellence. Known for their top-rated quality, they embody the company's dedication to superior service. Copyright ©2025 Diamond Certified Resource

Picture of Albert Nahman Plumbing and Heating installs water heaters. - Albert Nahman Plumbing, Heating and Cooling

Picture of Takagi Tk-3 tankless water heater installation - Albert Nahman Plumbing, Heating and Cooling

Picture of The company offers an array of plumbing and heating services. - Albert Nahman Plumbing, Heating and Cooling

Picture of The company performs trenchless sewer replacements. - Albert Nahman Plumbing, Heating and Cooling

Picture of Takagi TH-2 tankless water heater installation - Albert Nahman Plumbing, Heating and Cooling

Marcus Mosley is general manager of Albert Nahman Plumbing, Heating, and Cooling, a Diamond Certified company since 2002. He can be reached at (510) 859-3990 or by email.

Marcus Mosley: Leading by Example

By Matt Solis, Editor

With more than 25 years of experience, Marcus Mosley has done plenty to establish himself as an esteemed plumbing and HVAC veteran, but his introduction to the industry wasn’t actually part of his original life plan. “Initially, I wanted to become a helicopter pilot in the military,” he remembers. “However, I needed corrective surgery and it wasn’t available at the time, so I decided to pursue plumbing instead. I did have some other options, like...

Read Full Article - Marcus Mosley: Leading by Example

Albert Nahman Plumbing, Heating and Cooling Ratings and Survey Responses (reviews)

Rated Highest in Quality and Helpful Expertise PERFORMANCEGUARANTEED

Albert Nahman Plumbing, Heating and Cooling

622 SURVEYS

25 CONSECUTIVE YEARS

SINCE AUGUST 2002

CERT 132

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Albert Nahman Plumbing, Heating and Cooling

Based in Alameda, CA

4.7 avg. star score from 622 Verified Customer Phone Survey Responses

(Reviews: Scroll down to read them.)

Our surveys of only verified real customers produce the country’s most accurate ratings of local companies. Albert Nahman Plumbing, Heating and Cooling scored Highest in Quality and Helpful Expertise and passed the credential-based checks to earn Diamond Certified.

A Star Equivalent Score is calculated for each verified customer rating by weighting the 1–10 Quality score, the YES/NO Loyalty (intent to return) score and the YES/NO Helpful Expertise score. If Helpful Expertise wasn’t surveyed or didn’t apply, it’s simply not shown.

Diamond Certified Company Report SUMMARY UPDATE August 2026

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