Hours: Monday-Friday, 8am-5pm

2930 Broadway St. Suite A, Eureka, CA 95501



Most homes in the United States rely on a conventional storage water heater for their hot water. These are usually either electric or natural gas, depending upon which energy source is less expensive in a given area. Although they are vital pieces of equipment in a normal residence, the homeowner usually doesn’t quite grasp how the hot water is produced. Here are the basic principles of how your water heater works.

Dip Tube, Burner and Chimney

Coldwater is brought into the water heater through a dip tube. The dip tube enters the top of your water heater and extends down to the bottom where it is heated by either electricity or the combustion of gas. After gas burns, its remnants are moved up through a chimney and out of your house. The chimney also warms the water around it.

Heat-Out Pipe and Thermostat

A heat-out pipe is the means by which heated water gets into your home’s plumbing system. When you turn on a hot water faucet, cold water enters the water heater through the dip tube. This displaces the hot water already there and pushes it into the heat-out pipe. There is a thermostat on the side of your water heater that you set to determine how hot the water will get.

Evans Mechanical of Eureka, CA, installs, repairs, and maintains water heaters. We can provide service on either electric and gas models.

T&P Valve, Anode Rod and Drain Valve

There are also safety devices in your water heater. The T&P valve will open and release water if the temperature inside the unit gets too hot or if the pressure gets too high. This prevents water heaters from exploding. There is also an anode rod inside, which rusts faster than the water heater’s metal does. This prevents rust damage and buildup. The drain valve is used to periodically drain the water tank so the sediment can be removed.

Your HVAC Specialists

In addition to assistance with water heaters, Evans Mechanical in Eureka also provides heating and cooling repair and installation services. We offer preventative maintenance agreements so your heating and cooling systems are properly cared for. To arrange an appointment or consultation anywhere in Humboldt County, call our office today.

What our customers are saying
Five-Star Customer Reviews

Evans Mechanical is an excellent service committed to customer satisfaction and guaranteed quality workmanship. Our water heater burst and they were very responsive. They sent a technician out the same day and it was determined the heater was beyond repair.

Matthew H.

All three technicians worked well together. They treated each other kindly and were thoughtful and courteous with me. They did a final and complete cleanup after the installment of my new heater. They were respectful of my home. I’m grateful I used this company.

Kathy T.

We are always happy with the service from Evans. Your service people are always friendly and professional. And we feel your prices are fair and that you do an excellent job of keeping our heating system in working order. We are glad you are in Humboldt County.

Kimberly T.

The installers are finishing up. We expect to have great results with the new furnace & the newly installed dehumidifier. We applaud the professionalism of the installers.

Shutterbug S.

Everything was super professional. They showed up on time.kept me informed of what they were going to do and finished ahead of schedule. Work was impeccable! Highly recommended!

Martin R.

Excellent service from start to finish. Joe came out to give us an estimate on what we would need for a new furnace, never pressured us to buy the top of their line just giving us options on what we would need for our home. Then the date set for installation Thomas and Ryan came out on time and did a great job.

Kathi J.