Frequently Asked Questions

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In principle, a heat pump is maintenance-free. Nevertheless, we recommend that you have a trained professional check the heat pump by performing a function test on it after the first year of operation. The decision about additional service dates can be made together with the technician.

Most units are easy to install, especially when they are replacing another forced-air system. This is known as a retrofit. GSHPs can be installed in areas unsuitable for fossil fuel furnaces because there is no combustion and thus no need to vent exhaust fumes. Ductwork must be installed in homes without an existing air distribution system. Your dealer or installer can assess the cost of installing ductwork.

Yes. A GSHP can be a combination heating/cooling and hot water heating system. You can change from one mode to another with a simple flick on your indoor thermostat. Using a desuperheater, some GSHPs can save you up to 50% on your water-heating bill by preheating tank water.

No. Geothermal systems are virtually maintenance free. When installed properly, the buried loop will last for generations. And the other half of the operation—the unit's fan, compressor and pump—is housed indoors, protected from the harsh weather conditions. Usually, periodic checks and filter changes are the only required maintenance.

GSHP systems conserve natural resources by providing climate control very efficiently-thus also lowering emissions. GSHPs also minimize ozone layer destruction by using factory-sealed refrigeration systems, which will seldom or never have to be recharged.

The GSHP is one of the most efficient residential heating and cooling systems available today, with heating efficiencies 50 to 70% higher than other heating systems and cooling efficiencies 20 to 40% higher than available air conditioners. That directly translates into savings for you on your utility bills.

Most of a GSHP installation is underground. Inside the house, the heat pump units are about the same size as a traditional heating and cooling unit.

GSHPs are very quiet, providing a pleasant environment inside & outside of the home. GSHPs have no noisy fan units to disturb outdoor activities, on or near the patio.

GSHPs save money, both in operating costs and maintenance costs. Investments can be recouped in as little as three years. There is a positive cash flow, since the energy savings usually exceeds payment on the system.

Ground source heat pump systems will reduce your heating and cooling costs regardless of how well your home is insulated. However, insulating and weatherizing are key factors in gaining the maximum amount of savings from any type of heating and cooling system.

Yes, in most cases. Your dealer or installer will be able to determine ductwork requirements and if any minor modifications are needed.

Most people in North America currently use a storage tank water heater to provide hot water in their homes. A storage tank water heater keeps water hot 24 hours a day, even while you’re at work or sleeping. A tankless water heater, on the other hand, does not store hot water. It heats the water as you use it.

When you open a faucet, the flow of the water triggers the heater to turn on. Whether you use gas or electricity, the powerful gas burners or electrical elements will turn on, rapidly heating the water as it passes through the unit. The water is heated instantly, and the time it takes to obtain hot water is directly related to the distance the hot water has to travel from the water heater to where hot water is being used. The burners or elements then shut down when you shut off the hot water. The energy that is consumed is only for the hot water that is being used.

Because a tankless water heater turns on when you open a hot water faucet and turns off when you close the faucet, the energy that is consumed is only for the hot water that is being used. Since there is no storage of water, and thus no constant heating and re-heating of stored water, you’re not wasting energy heating water when you don’t need it, such as when you’re sleeping or not at home. This energy savings translates to dollar savings for you and reduced impact on our environment. Furthermore, since a tankless water heater heats the water as you use it, you can have an endless supply of hot water, provided you size the unit appropriately (see our Product Selector to find the right model).

Depending on which model of tankless water heater you purchase, and what size storage tank you have now, and if it runs on gas or electricity, you could save anywhere from 5% to 69% off your hot water heating bill. How? Most homes use hot water for a cumulative total of about one hour per day, yet they typically keep 40 or 50 gallons (oftentimes more) of water hot 24 hours a day. Having a system that eliminates the storage and heats water only as you use it can dramatically reduce your energy consumption.

Yes. Because storage tank water heaters store a finite amount of water, when that amount is used up your shower goes cold and you have to wait for the heater to heat the water back up (this is known as recovery time). Because a tankless water heater heats the water as it passes through the heater, you can never run out, provided flow limitations are not exceeded (see our Product Selector to find the right model for you).

There are many advantages of having a tankless water heater in your home. Besides the money savings, endless hot water and smaller impact on the environment, a tankless water heater:

  • Is very small and can hang on the wall, thereby saving you valuable floor space.
  • Is designed with replaceable parts and is built with such materials as copper, stainless steel, and aluminum so as to last a lifetime. Energy savings is only one segment of savings—with proper care this could be the only water heater one needs in a lifetime.
  • Is almost entirely recyclable, so if you ever decide to replace it, it doesn’t have to go to the landfill.
  • Will not develop a corrosive leak like a storage tank water heater, saving you from expensive water damage in your home.
    Note: A tankless water heater can leak if it is exposed to freezing temperatures or has a manufacturing defect.
  • Maintains its efficiency throughout the lifetime of the unit. Storage tank water heaters decrease in efficiency over

Yes, provided you buy the right tankless heater for you (see our Product Selector to find the right model). Tankless water heaters are able to function at a variety of temperatures that you can choose, and can produce hot water at the same flow rate as your standard single-headed shower provides now.

Yes. You must choose the proper model to suit your home’s hot water needs, which is based upon the maximum flow of hot water you need at any one time (see our Product Selector to choose the right model for you). We sell tankless water heaters that are capable of handling one shower at a time and others that can sustain a maximum of two showers operating at the same time.

Since tankless water heaters do not store hot water, minerals have less of an opportunity to settle out of the water column and build up inside the heat exchanger. Additionally, the flow of hot water through the coiled heat exchanger flushes the product each time hot water is used. The use of a water softener is fine with a tankless water heater, and is recommended if you commonly experience hard water problems in your home.

Because this type of water heater heats the water as you use it, the volume of hot water that it can deliver is directly correlated to the amount of its energy input. The bigger the burners or heating elements in the unit, the higher the volume of hot water that it can deliver. Today tankless water heaters come in various sizes to suit most homes’ needs. Even if you need to be operating multiple showers at once, tankless water heaters can keep up (see our Product Selector to choose the right model for you).

You need to choose the model that can deliver the volume of hot water to meet your needs. The best method for sizing this type of water heater is to know how many showers each model can run simultaneously. We have models that can run either one or two showers at a time. And remember, a tankless water heater can deliver endless hot water, shower after shower. See our Product Selector to determine which tankless water heater would be right for you. Or you can call us toll-free at 800-503-5028 and we would be happy to help you identify the proper model for your home.

Yes. Because tankless water heaters provide an endless supply of hot water, you can fill a tub of any size. It is only a question of time, meaning that our larger units can fill a tub faster than our smaller units. Keep in mind that some tubs draw water at high flow rates, so it may be necessary to limit the flow so that the tankless water heater can adequately heat the water that is being called for.

No. Europe, Asia and South America, where energy costs are more expensive than here in North America, have been using tankless water heaters for 75 years. Bosch Water Heating has been selling and supporting tankless water heaters in the United States since 1979. However, most Americans are just now learning of this technology and its benefits.

A point-of-use water heater is a very small water heater, either a mini-storage tank or a small tankless model, that is designed to be installed at the point of use, thereby eliminating a long pipe run. They are mostly sized to supply hot water to one specific application, usually a sink. A common application is a remote sink, such as a bathroom in an office building or a service station. Another common application is for distant sinks in the home that typically take too long to receive hot water.

Point-of-use water heaters are usually used for one of two reasons. One is to supply hot water to a remote location that is not served by a larger water heater. The other is to eliminate the wait time for hot water you may have at a particular faucet. Both offer the advantage of not having to wait for hot water. You can install a point-of-use water heater right at the source, e.g., under a sink. Therefore, when you turn on the faucet you have hot water instantly available to you. This both eliminates your wait for the hot water and saves water, our most valuable resource, from being wasted down the drain as you wait for hot water to arrive.

Yes. You can place a mini-storage tank (see Ariston) in-line with your main water heater. These are available in 2.5-gallon, 4-gallon and 6-gallon sizes. These provide you instant hot water at your washing machine or dishwasher, for example, and by the time you exhaust that supply, the main water heater that serves these locations has caught up, so you have a continuous supply of hot water as well (provided the main water heater is a tankless model).

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