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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
11 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Longo Plumbing
Longo Plumbing
4.9(
53
)
Tankless Water Heater - RepairWater Heater - Repair or ServiceTankless 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%
46 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

On average, a tankless water heater should last between 10 and 15 years. Its lifespan will be affected by how much it's used, the effect of weather where your home is on the unit—colder is harsher and will shorten lifespan—and if the heater is maintained appropriately and regularly. There are many signs your water heater needs to be replaced, so pay attention to anything that changes with your heater or hot water.

When the water expands in a hot water heater, it puts pressure on your hot water pipes and can cause leaks or a rupture in the hot water tank under certain conditions. Pipes or water heaters may split due to the pressure where there is a backflow preventer that prevents the hot water heater from diffusing pressure by releasing water back to the public water line.

In these scenarios, a hot water heater expansion tank provides a place for the hot water heater to relieve pressure and prevent bursts and leaks.

Professional installs conclude in mere hours, with complexity differences possibly prolonging efforts slightly. Site condition often dictates the exact duration.

Due to the high temperature, using stainless steel vent pipes for your tankless water heater’s exhaust vent is best. Also, it is safe to use a flexible vent duct as the exhaust fan. If installing the exhaust fan yourself, make sure you are using heat-resistant silicon to connect the exhaust vent and the duct on your water heater.

A tankless water heater with a flow rate of 10 GPM should replace a conventional 50-gallon water heater. To avoid a surprise cold shower or two and to keep your energy costs in check, it's important to replace a conventional tanked water heater with the equivalent tankless water heater. Your household size and the number of hot-water-using devices you use at once can help you determine the best-size tankless water heater.

The Penryn, CA homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.