Water heater is an appliance found in homes or in offices and it is used for the heating of water with the sole aim of purifying or warming it. Normally, the heat is generated from gas or electricity, but propane and fuel oil are also used. Water heating is done for purposes such as drinking, cooking, cleaning, bathing. A gas-powered water heater is comprised of a string of pipes that water passes through to a wide heating area, and a Bunsen gas-burner. The entire components are suited inside a case and provided with water as well as gas for heating.

Installing water heater cost review

The cost of installing a water heater ranges from about $300 – $600+. That’s much. But the cost of installaling water heater is dependent on the:

  • Type.
  • Size.
  • Kind of contractor.

It’s worthy that I remind you that for now, we’re talking about cost of installing the traditional tank water heater, and not tankless. We’ll get to that of tankless water heater later on.

Speaking of type; the most common are gas and electric powered water heaters. We’ll dwell on gas water heaters for now and compare it with the electric.


  • Cheaper to use.
  • Less time consuming when heating water.
  • Can operate when power is gone.


  • Excluding installation; it can cost about $1,000 – $ 1,500 to purchase depending on your location.
  • Installation is costly.

Talking about the electric water heater, here are its pros and cons in comparison with its gas-powered counterpart.


  • Less costly installation.
  • Costs between $500 – $900 for purchase, depending on location.

The cons seem to be more.


  • Costlier to use.
  • More time consuming when heating water.
  • Can’t work in the absence of electricity supply.

Another factor that affects cost of water heater installation is size. Usually, the bigger the size the costlier. But that’s theoritically, because costlier doesn’t equate to better. As far as water heater is concerned, it’s advisable you purchase the size that suits your home or office water consumption quantity. Because when you get a small heater for plenty water use, life could become difficult. And when you get big heater for small water use, you end up paying more gas or electricity bills for little results. So how do you find out the right size of water heater for your home or office? By determining the quantity of gallons of water that you use at a time. Determining the highest water quantity you use at one time will help you to decide what size of water heater to get. Take for instance you use 53 gallons of hot water at a time, then the right size of water heater for you is 60-gallon water heater. Based on research, here are estimates of gallons of water use depending on family size.

  • 30-gallon water heater size for a family of 1 or 2 persons
  • 40-gallon water heater size for a family of 3 or 4 persons
  • 40 – 50 gallon water heater size for a family of 3 or 4 persons
  • 50 – 80 gallon water heater size for a family of 5 or more persons

Another important factor that determines cost of installing a water heater is the kind of contractor that you hire. Most contractors charge between $300 – $600+  for the labor of installing your water heater. Whereas heaters that are inside tight compartments or suits can cost you extra Dollars for extra hours, usually between $100 – $200 extra for installations. But these are dependent on the kind of contractor. More experienced ones charge more, but they save you extra costs and stress of repairs along the line.

To determine gas units of measurement. It is worthy to note that the U.K. gas units of measurement is BTU(British Thermal Units), while the U.S. uses CCF. It should be noted that other countries may use divergent gas units of measurement. So these may be useful to know, in case you will have to do some unit conversions in your own country.

TIPS of Installing water heater cost

  •  1 Cubit Foot = 1, 020 BTUs.
  • 100 Cubic Feet is contained in CCF which is equal to 102, 000 BTUs.
  •  MCF contains 1,000 Cubic Feet. This is equal to 1, 020, 000 BTUs.
  • 1 Therm (thm) has 100, 000 BTUs.

Where CCF is defined as amount of natural gas in a space of 100 cubic feet.

Now, we’re gonna educate you on the best water heater installing companies that have global reach so that whatever is your location, they can get to you and install your water heater at an affordable cost.

Best company review

Cathedral  are experts in sewer, water, and gas plumbing services. Water heater installation is one among other numerous specialties that they pride themselves in. With less than ten years of experience in the industry, them seem to have surpassed their predecessors in both outreach, as well as quality service delivery and integrity. Cathedral bring to your doorstep a team of respectful workers who have acquired incomparable expertise, license, insurance, knowledge and technique in delivering top notch services across the United States in the shortest period of time.

Installing water heater cost

Customers who wish to purchase water heaters from them are assured of receiving a quality product that comes directly from the manufacturer’s firm. Your installation can be done anywhere; at home or work. Choice is yours but be calm because they are spread in major cities across Europe, Asia and especially the U.S.


  • Good customer reviews on their social media pages.
  • Dedicated, experienced, polite and punctual workers.
  • Affordable cost of installation.
  • Available on week days, weekends, holidays and during vacations.
  • Plumbers able to work without your supervision.
  • Almost a global outreach.

Do you have at home or in the office, an old water heater that needs to be replaced because it’s just old and is starting to get faulty on a regular basis, but you just wanna do the replacements yourself because you like household technical stuff or don’t have enough money for professional plumbers? Or that your family size just increased and so a bigger heater became indispensable? If any is the case, this post will guide you on what to replace a water heater.

The first idea is to replace the old heater, with one that is big enough to carter for your current water needs. Let’s say you’re a family of four persons; ideally a 65-gallon unit water heater should do. But before you run to purchase this size, make sure you will have decided what type you’ll be replacing with, a new gas-powered or electric-powered water heater? Choice is yours, but it’s easier to replace with the same type.


All plumbing installations are in accordance with the local plumbing codes. You will be wise to connect with the local building department in your town for your town requirements. Installations differ across towns and is dependent on type of water heater. These steps are merely general for the more common types – gas and electric. But may differ from town to town.



(A) Close the main water shutoff valve, or the shutoff valve near the cold water supply line supplying the water heater. Thereafter, severe the electricity/gas connection.

  • For electric water heater; shut the circuit breaker near the home’s breaker box.
  • For gas water heater; shut the gas supply at the shutoff valve. It is located on the gas supply pipe closest to the water heater.

(B) Empty the water tank. To achieve this, connect a garden hose to the drain valve located closs to the floor of the heater. Turn on the closest hot water outlet to avoid slowing down the draining. Calmly turn on the drain valve to avoid clogging of the drain valve by sediments. When the tank is entirely drained, close the valve and unplug your hose.

(C) Detach the water heater. Use a pipe wrench to cut the cold and hot water links off from the heater. They can be joined to the heater with a ductile hose or pipes made of alloy( in that case cut with tubing cutter). At this point, you cut the gas or electricity supply.

  • For an electric water heater; use a non-contact voltage tester to ensure that circuit is not on. Then remove the wire connections as well as circuit cable from water heater.
  • For a gas water heater; before disconnecting a gas supply to the water heater you ensure that the gas supply has been severed at the shutoff valve. Afterward, the vent pipe will be removed from the draft hood found on heater.

(D) Removing and replacing the heater; have a helper assist you in carrying away the old appliance. Tidy the floor where it stayed. Put in that same spot, your new water heater. Connect the new water heater endings with the household’s plumbing connections. If necessary, adjust the legs of your new water heater.

Well, that sums up the steps involved in replacement of a water heater. But it is never complete without talking about how to install the new one.


(A) Fit in the relief valve and others; including the temperature and relief valve. Also detach the the drain pipe. With the aid of your user’s guide, connect all lines or wires.

(B) Join the water pipes; connect a shutoff valve to the cold water supply if it is not already connected . Thereafter, join the hot water externa and cold water interna which are on the heater, to the cold and hot water tubes. Ensure to use the right closure. Some heaters have dielectric unions that stop electrolysis. Electrolysis is one phenomenon that causes early corrosion of metals. When alloy connections are your only options, it is best you bring in plumbers. That situation may be only for experts.

(C) Connectthe electricity origin; this is done by linking the circuit wires to the heater leads found inside an electrical junction container above  the water heater unit. Most times, circuit wirings are enclosed inside a ductile metal casing through which it joins to the water heater.

(D) Adjust the temperature of the water heater; finally it is the last step in your electric water installation. Get it working with these last directions.

  • Switch on the cold water supply valve, as well as the house water supply valve. Allow water to fill the heater’s tank. Afterward, switch on a hot water tap that is the farthest. The moment water drops from the tap, you know the tank is full. But mind you the water is not yet heated.
  • Return power supply to the water heater’s circuit.
  • Adjust the thermostat which is on the water heater to a temperature range that is between 110 – 125 degrees Fahrenheit. After that, alllow water inside the tank to heat to the temperature you had adjusted the thermostat to.

Well, here is something you should know when installing your electric water heater. It’s about the most important aspect that makes this appliance electrical. I’m going to educate you on how to install electric water heater wiring.

  • In the name of wiring, the first move is to always switch off the power supplies. All of them. Next up, you switch off the household water supply. Not the heater’s.
  • Next, discover where the junction box is on the heater. The position varies from heater to heater anyway, so don’t just look for in same spot you found it on your previous heater because they are of different models. Now when you spot it, remove the screws and open its lid. When you do, there are two wires and a ground screw right there facing you.
  • Next process is to remove the knockout found on the box with the help of your pliers. Then pick up the wire stripper and uncover the wire inside the plastic by stripping it six inches of NM cable. Ditto to all wires in the NM cable
  • Fish the wires and fasten the screw. Clamps are best on the covered area of the cable. Move wires along knockout and thereafter join the wire connector to the junction box with lock nut.
  • Firmly connect the ground wire to the ground terminal. Join one wire on the heater with the black wire found on the circuit. Most home heaters have 240 Volt electric supply. So in most cases lack a neutral wire. Cover the wires with electrical tape. Then join the second wire found on the heater to the white wire which is heated. That’s all for wiring.
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