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Avatar for Green Core Heating & Air
Green Core Heating & Air
5.0(
8
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Green Core Heating & Air did an excellent job installing our new gas furnace and completely replacing the ductwork. The owner communicated clearly throughout the entire process and was always quick to answer questions. The crew showed up on time, worked efficiently, and kept everything clean during the installation. Pricing was very fair compared to other quotes we received. I would definitely recommend them to anyone needing HVAC work."
Air Conditioning Install
Harvest Thermal
Harvest Thermal
9 neighbors recently requested a quote
Avatar for Ray's Rescue Plumbing
Ray's Rescue Plumbing
4.8(
18
)
Water Heater - Install or ReplaceSolar Water Heater System - InstallTankless Water Heater - Repair+2 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Emergency services offered

Warranties offered

"I would highly recommend Ray’s Rescue Plumbing. He was very clean, prompt, courteous and knowledgeable. We had several issues ranging from leaks, repairs and installing a tankless water heater. Ray’s prices were competitive and he actually saved us a few thousand dollars from a previous bid from a ‘not so honest’ plumber."
Install - hot water heater
Install - hot water heater
Install - hot water heater
Tankless Install
Happy to help

+2

Response time4 hrs
Response rate95%
48 neighbors recently requested a quote
Avatar for GoFlow Plumbing
GoFlow Plumbing
5.0(
7
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Your plumbing problem becomes our problem to solve.\n\nThat’s not just a tagline, it’s how we operate. When you call GOFLOW, you’re getting a team that knows this area, knows plumbing, and genuinely cares about doing the job right.\n\nWe’re not a franchise. We’re not a call center routing you to whoever’s available. We’re a local company built by plumbers who got tired of watching customers get treated like transactions instead of people.

Kept existing config
Min visual impact
Moen Flo Install
Backflow Preventer
Backflow Preventer

+2

25 neighbors recently requested a quote
Avatar for Mike Testa Plumbing Inc
Mike Testa Plumbing Inc
4.3(
7
)
Water Heater - Install or ReplaceSolar Water Heater System - InstallTankless Water Heater - Install+6 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"Finally!  A plumber that shows up on time and does efficient and neat work.  Also doesn't aggressively try to upsell you on other services.  One more thing, we supplied the faucet to be installed and there was no attempt to charge us for the lost commission  the company did not get on the sale for the faucet.   In other words, just what you should expect from a plumber."
My jobs
My jobs
My jobs
My jobs
My jobs

+3

17 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.0(
13
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Warranties offered

"It went very well; the thorough HVAC system checkup revealed some questionable component that were best suggested to be replace with new ones. I am not confident that my HVAC system is set for more that good performance going forward. I appreciated the non-pressured advice and suggestions in coming to my decisions. Thank you, Joaquin Ortiz."
16 neighbors recently requested a quote
Recommended by70%of homeowners
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Water Heaters questions, answered by experts

The good news is that most home warranty plans cover hot water heaters, regardless of whether you have a tank or a tankless model. Your hot water heater should be covered by your home warranty because it's considered an essential home appliance.

While a water heater explosion is rare, it is a serious danger. Be aware of these critical warning signs:

  • Sulfur or Rotten Egg Smell: This is a major red flag, especially for gas water heaters. It can indicate a gas leak, which could ignite and cause an explosion.

  • Leaking Pressure Valve: If the temperature and pressure (T&P) relief valve is leaking, it may not be able to properly regulate internal pressure, creating a risk of bursting.

  • Shaking or Rumbling: Loud rumbling or shaking from the tank can be a sign of extreme pressure buildup.

  • Excessive Heat: If the exterior of the water heater feels unusually hot to the touch, the unit may be overheating dangerously.

  • Rust-Colored Water: This can be a symptom of severe internal corrosion that compromises the tank's integrity.

If you notice any of these signs, especially a gas smell, you must act immediately. Shut off the gas supply to the water heater and call a professional plumber right away to prevent a potential disaster.

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.

Gas water heaters last between eight and 12 years on average. You can help them reach their maximum lifespan with regular cleanings, maintenance, and professional checkups, though don’t hesitate to swing for a full replacement if the total cost of repairs is greater than that of purchasing and installing a new unit. 

It’s important to find the type of water heater that fits your needs and budget. Depending on the type of water heater, size, brand, and the type of energy you use to heat the water, costs range from a few hundred dollars to several thousand. Some of the most common types of water heaters include:

  • Electric: $600–3,500

  • Gas: $700–$2,700

  • Propane: $700–$2,500

  • High efficiency: $1,500–$3,000

  • Indirect: $1,200–$3,500

  • Hybrid heat pump: $1,200–$3,500

The Lagunitas-Forest Knolls, CA homeowners’ guide to water heater services

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