Energy Efficient Water Heaters

Energy Efficient Water Heaters

Request Product Information

or call


An energy efficient natural gas water heater can help you save money on your energy bill while heating water twice as fast! If your water heater is over 12 years old, then it's time for a replacement.

A high-efficiency natural gas water heater can bring you significant monthly savings on water and energy costs. CenterPoint Energy’s Home Service Plus (HSP) makes water-heater replacement and installation affordable, convenient and worry-freeDetermine how much a replacement water heater will cost, including installation, and get peace of mind with a FREE in-home consultation from CenterPoint Energy's Home Service Plus (HSP):

How we offer you the best value on a new water heater:

    Industry leading warranties - up to 12 years on select high efficiency water heaters
    Expert help - to determine how much your water heater will cost
    Flexible payment & financing options - for qualified customers
    Saving you time - conveniently shop water heaters by phone
    Peace of mind - trusted by Minnesotans for 80+ years


Request Product Information

or call 


Benefits of Natural Gas Water Heaters:

  • Quick recovery: Natural gas water heaters heat twice as fast as electric, so you have hot water every time you need it.
  • Lower operating costs: Annual gas savings with a gas water heater vs. an electric water heater is 42%*
  • Excellent safety record: Natural gas water heaters have been safely providing hot water in more than a million Minnesota homes for years.
  • Compact design: Save space by using a compact natural gas water heater rather than a larger electric model.
  • Installation options: There is a natural gas water heater for every situation, whether you are building a new home or remodeling.

*Using a three year residential average gas price of $1.06 per Therm and three year average electricity price of $0.91 per KWh - as of November 2008.

Our team wants you to feel great about your new or replacement water heater, and that starts with an in-home consultation from one of our water heater sales experts. Contact our team today to setup an in-home consultation where you can learn more about proper sizing, efficiency, and total costs of a new water heater.

Types of Gas Water Heaters

Here are the types of Ruud natural gas water heaters available at Home Service Plus, starting with the most basic unit.

Atmospheric-vent Natural Gas Water Heater

Atmospheric-vent water heaters are the standard type of gas water heaters, which have served millions of homeowners for years. They use room air for combustion and exhaust and an exhaust chimney is installed to a draft hood that sits slightly above the tank. These water heaters use 'gravity' (rising warm air) to exhaust combustion by-products and are vented through the roof. Often the exhaust vent is connected to the furnace vent and they share the same chimney.

    ✔ Compact unit design
    ✔ Quick recovery
    ✔ Low operating costs
    ✔ High efficiency
    ✔ Environmentally friendly

Power-vent Natural Gas Water Heater

Power-vent water heaters are the same as the atmospheric models, but with a reengineered exhaust system. The exhaust vent is made from PVC plastic rather than metal, has a blower installed to assist the expulsion of combustion by-products, and can be vented through either the roof or a sidewall.

    ✔ Compact unit design
    ✔ Quick recovery
    ✔ Low operating costs
    ✔ High efficiency
    ✔ Environmentally friendly
    Flexible installation*

* Requires no chimney, chase or flue. Because of the power-assisted exhaust, it can be placed up to 40' from where it is vented through a sidewall, which makes it easy to fit within even cramped equipment rooms.

Direct-vent Natural Gas Water Heater

Direct-vent water heaters use no room air at all. Instead, the heater uses a 'gravity' system to pull in outside air for combustion and to exhaust combustion by-products. These units can be vented through a sidewall and operate independently of other exhaust systems in the house.

    ✔ Compact unit design
    ✔ Quick recovery
    ✔ Low operating costs
    ✔ High efficiency
    ✔ Environmentally friendly
    Great for tight construction

Powered direct-vent Natural Gas Water Heater

A hybrid, this model combines the features of power- and direct-vent models. Only outside air for both combustion and exhaust is used, with a blower built into the exhaust flue of the water heater unit. Because of the power-assisted exhaust, the unit can be placed up to 40 feet from a sidewall. It uses PVC plastic pipe as a venting material.

    ✔ Compact unit design
    ✔ Quick recovery
    ✔ Low operating costs
    ✔ High efficiency
    ✔ Environmentally friendly
    Flexible installation
    Perfect for air-tight construction

Condensing Natural Gas Water Heater

Condensing water heaters are a great choice for larger, high water use homes. They are power assisted and are a good choice for tightly constructed homes or when the customer has a high efficiency furnace. They heat up to 129 gallons per hour (GPH) at 90 degrees, compared to 41 GPH for standard water heaters. Condensing natural gas water heaters are a good alternative to tankless water heaters, and provide a high capacity of hot water with less maintenance needed to sustain design efficiency and capacity.

    ✔ Compact unit design
    ✔ Quick recovery
    ✔ Low operating costs
    ✔ High efficiency
    ✔ Environmentally friendly
    Can achieve 96% thermal efficiency
    Higher capacity than most water heaters

The water heater sales team at Home Service Plus is ready to help you determine which type of water heater is best for you and your family. For more natural gas water heater product information and to schedule an in-home consultation:

What Size Water Heater Do I Need?

The industry professionals at Home Service Plus are ready to work with you on sizing recommendations for your new or replacement water heater. Based on things like your household needs, family size, and common water-consuming activities, our sales team will be able to help determine which high efficiency natural gas water heater will work best in your home.

HSP sells and installs 30-, 40-, 50-, and 75-gallon natural gas water heaters. There are two methods for determining the correct water heater size for your home.

Size by Household Needs

This method depends on the number and ages of family members, how you wash dishes and clothes, and the number of bathrooms in your home. Looking at the chart below, the needs of a two-person family with one bathroom and one clothes washer should be adequately met with a 30-gallon water heater, whereas larger families and homes hsould opt for a larger water heater unit.

  • For every additional bathroom in your home, add 3.5 gallons to the capacity.
  • If you use an automatic dishwasher, add another five gallons to the total.
​Family Size ​Recommended Gallon Capacity
​1-2 people ​30 gallons
​2-3 people ​40 gallons
​3-4 people ​40 gallons
​5+ people ​50 gallons

Size by First-Hour Rating

The second method tells you the amount of hot water the water heater can deliver in one hour.

    1. Determine the hour of the day when you use the most water.
    2. Use the Activity Chart to find the quantity of hot water you use for each activity during that hour.
    3. Add all the quantities for that hour. The total is your first-hour rating.
    4. Choose a water heater with a first-hour rating close to the total amount of hot water you use during the hour you selected. The first-hour rating also includes the recovery rate. This is a combination of how much water is stored in the water heater and how quickly the water heater can heat cold water to the desired temperature.
​Activity ​Hot Water Used
​Clothes washer ​25 to 40 gallons per load
​Dishwasher ​5 to 10 gallons per load
​Hand dishwashing ​3 to 4 gallons
​Tub bath ​15 to 20 gallons
​Shower ​3 gallons per minute
​Bathing an infant ​2gallons
​Shaving ​2 to 3-1/2 gallons
​Shampooing ​5 gallons
​Hand washing ​1 to 2 gallons
​House cleaning ​5 to 12 gallons
​Food preparation ​3 to 6 gallons

* Minnesota Blue Flame Gas Association

Still unsure what size you need? No problem. The water-heater experts at HSP will ensure you get the right-sized water heater tank, just call 612-342-4610 or request product info and we'll promptly answer your questions.

How Much Does a Water Heater Cost?

The cost of a gas water heater varies depending on type and size. Our experts will walk you through all of the pricing factors that go into the price of your water heater installation, including installation, haul-away of your old unit, and any other cost factors like city permits or other setup needs.

Atmospheric-vent units start at $1,250, including installation, haul away, and city permits. Power-vent water heaters start at $1,800, installation, haul away, and city permits included.

Water heater prices are a big factor, but quality, size, energy efficiency, rebates, warranties, payment/financing and installation should weigh heavily when you’re deciding what gas water heater to buy. Our team will discuss the right sizing recommendations to find what will work best for you and your family’s home water heating needs.

If you live within HSP’s service area – the Minneapolis/St. Paul metro area and much of greater Minnesota – you can get the following benefits included with the cost of your water heater:

    High-quality, durable products
    Industry leading warranties - up to 12 years on select high-efficiency water heaters
    Peace of mind - trusted by Minnesotans for 80+ years
    Flexible payment & financing options
    Rebates & special offers may be available

Get product, pricing and discount info by completing a short form. An expert from Home Service Plus will help you review each of these factors in a free in-home consultation! During your consultation, you can learn more about what determines the price of a new or replacement water heater, reviewing warranties and cost factors like venting, plumbing, unit efficiency, and the possibility of permit updates.

How Long Does a Water Heater Last?

The average life expectancy of a natural gas water heater is about 13 years. With proper water heater maintenance it may last 15 years, but many customers choose to replace their water heater after 12 years and as the water heater unit begins leaking or underperforming.

A broken water heater can discharge as much as 75 gallons of water onto your floor. If it isn’t above a concrete floor pitched toward a floor drain, avoid a big mess and possible water damage by replacing your water heater every 12 years.

Even if water heater replacement snuck up on you, it helps to know that today’s high-efficiency models will lower your energy bills. At Home Service Plus, we even offer flexible payment options and no-cost financing to qualifying customers on different models of high-efficiency natural gas water heaters.

Trusted, Local Professionals for 80+ Years

Home Service Plus is Minnesota’s largest service provider for major appliance repair, replacement and maintenance. Our customers enjoy the friendly and professional service they get from our technicians, who are all highly trained and pre-screened. We’ll never try to sell you something you don’t need.

When you get an energy efficient gas water heater with HSP, you get a reliable appliance with an industry-leading warranty.

Call 612-342-4610 or request product information and we’ll quickly get back to you about any money-saving rebates, special offers on new equipment, and estimates on water heater prices!