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TRUSTED BY PENRYN, CA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon133
    Verified water heater services reviews

Top-Rated Water heater pros in Penryn - Updated Nov 2026

Avatar for HOTCO The Hot Water Heater Company, Inc.
HOTCO The Hot Water Heater Company, Inc.
5.0(
92
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+3 more

Serving Penryn, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Doug was very personable and answered all my questions. Felt very comfortable with the work done, final price and product purchased. Would highly recommend The Hot Water Heater Company to anyone looking to have a hot water heater installed!"
Bradford White
50 Gallon Bradford White
New 50 Gallon
Old Rheem Tank
Bradford White Electric

+6

Response time5 hrs
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Longo Plumbing
Longo Plumbing
4.9(
53
)
Water Heater - Repair or ServiceTankless Water Heater - RepairTankless Water Heater - Repair - For Business+1 more

Serving Penryn, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Patrick and his crew did a great job for us. We had several plumbing issues and decided to replace all the water lines in our 60 year old forever home. In diagnosing a knocking sound Patrick discovered a builder defect and our gas line was compromised in several places. He and his crew replaced the water lines and gas line, replaced our 15 year old water heater that was failing and completed all the jobs on our repair list (replumb refrigerator, add pressure regulator to the main supply line). He did such a great job rebuilding the plumbing for the laundry area, basically rebuilding the wall, and I never thought it would look so good in my lifetime! They protected our floors and respected our property and wasted no time completing a large job. We have never seen any contractor clean up after a job as thoroughly as they did. Longo Plumbing is our plumber anytime we need one and you won't be sorry you hired them."
Response time6 hrs
Response rate98%
49 neighbors recently requested a quote
Avatar for SG Quality Builders, Inc.
SG Quality Builders, Inc.
5.0(
41
)
Tankless Water Heater - InstallWater Heater - Install or Replace

Serving Penryn, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"SG Quality Builders was the last of 5 different pros we took estimates from. SGQB seemed to be the most knowledgeable and had the expertise to do a complete job installing our new tankless water heater. Because of how our existing water heater was plumbed, installing our tankless was more difficult than most. Serge took the time to explain how the installation would be completed and answered all my questions. The installation was completed as planned including the permit and inspections also handled by SGQB. SGQB did many steps to minimize the disruption to our daily routine and did the little things like covering our carpet when they worked inside the house. The water heater works great. We would definitely invite this pro for future projects."
Bathroom remodel
Bathroom remodel
Bathroom remodel
Bathroom remodel
Bathroom remodel

+10

Response time4 hrs
Response rate97%
1 neighbors recently requested a quote
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Water Heaters FAQs, answered by experts

Yes, this would be an appropriate choice. In order to comply with the National Electric Code’s rules, you'll need to install a circuit breaker that's 125% larger than the intended load. In this case, you'll multiply 30 amps by 1.25 to find the necessary breaker size. Plugging that equation in for your 30-amp water heater will leave you with a 37.6-amp breaker. If your current water heater keeps tripping the breaker, it might be time to talk to a plumber or electrician about upgrading your water heater's setup.

The size needed for your expansion tank is determined by the size of your home's water heater. Expansion tanks are available in 2-gallon and 4.5-gallon sizes. A 2-gallon tank will be appropriate for water heaters up to 50 gallons. An adequately sized tank should have a volume that equals 2% to 5% of the water volume within the system. A plumber can evaluate your home's water pressure, water heater size, and other factors to provide suggestions for picking out the best expansion tank.

Yes, a water heater can be replaced in a day and can take between two and three hours to install from start to finish. Even if you encounter extra tasks that need to be completed, the job can still be completed in one day.

Often, the first issue you might encounter is a lack or loss of power—this could be caused by a tripped switch or a failed heating element. If your hot water is not producing enough power and its size is not the issue, you might need to replace one of its heating elements. A leaking water heater could be caused by tank erosion.

While not all homes require a hot water heater expansion tank, they are necessary in most newer homes and are often mandated by local building codes. Codes typically require an expansion tank if your plumbing system is a 'closed-loop' system, which often includes a backflow preventer or pressure regulator on the main water line. Some municipalities have specific requirements. Installing an expansion tank on a closed system is crucial, as it prevents excess pressure that can damage your water heater and other appliances, potentially shortening their lifespan. However, tankless water heaters do not require an expansion tank.

The Penryn, CA homeowners’ guide to water heater services

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