See here the list of Top 10 best heat pumps. Read the buying guide and other important factors before making a selection for you or any of your dear ones
- Eugene Silberstein
- Delmar Cengage Learning
- Edition no. 1 (08/15/2002)
- Proven reliability
- No venting required
- Sleek design fits anywhere
- Round-toe pump with covered heel and Soft System technology at insole
- 10 X-Wide
- Prime Video
- 7 Day Programming, program each day differently if needed-4 periods per day
- Backlit digital display
- Compatible with heating, cooling and heat pumps with auxiliary heat, Does not work with electric baseboard heat (120-240V) or multistage HVAC systems
- Compact air conditioner/heat pump with slide-out chasis offers window or wall installation (Window mounting kit included)
- Multi-speed electronic controls with 24-hr. on/off timer and full-function remote control
- 8,000 BTU cooling capacity / 7,000 BTU heat pump / 3,500 BTU supplemental heating capacity (Uses standard 115V electrical outlet)
- NOTE: This item is non-programmable thermostat
- Easy to see read backlit display with soft-touch button interface
- Quality temperature control for heat pump with auxiliary heat. Mercury free thermostat
- Big, clear display - easily read in low lighting
- Selectable programming - 7 day / 5-1-1 / off
- Easy installation - built in level indicator, pluggable terminals and streamlined configuration menu
- This is a 24VAC low-voltage non-programmable thermostat for room use, compatible with heat pump (with aux) systems,compressor short cycling protection.【IMPORTANT】 Currently does not support...
- 2 Heat/1 Cool Conventional and Heat Pump,Accurate temperature control of +/-1-Degree F for consistent comfort,Air Filter change reminder and Low Battery Indicator available.
- Large LCD display with backlight,easy to read in various lighting conditions,OPTIONAL 2 "AAA" Batteries provide continuous temperature display during power loss.
- Save money all year-round with a highly efficient ductless mini split inverter+ heat pump system
- Ultra-silent and beautifully built: perfect for home or light commercial use
- Use for both cooling and heating: 24000 BTU/hour, with 17 SEER and 10 HSPF efficiency
The benefits of geothermal heating are obvious: independence from the price of fuels such as oil and gas, an ecologically clean conscience and low operating costs. No wonder that more and more property owners are choosing a heat pump heating system . But which heat pump is the best?
Quality does not always have to be expensive
In its test for air heat pumps and other electric heat pumps Stiftung Warentest has taken a closer look at different models and evaluated them. One in advance. The heat pump test shows: The most expensive model is not always the best. So the test winner moves more in the lower price segment.
Furthermore, in the test, no heat pump cut worse than 2.9. So if you rely on one of the models listed here, you can not do much wrong. Here are the results of the heat pump test at a glance.
Vaillant Geotherm convinces in price and performance
Vaillant Geotherm plus
The Vaillant Geotherm convinces in price and quality. Especially in the category of energy efficiency, it can excel with its top score of 2.4 compared to its competitors. Also in handling (1,2) and processing (1,1) it achieves top results.
The winner of the heat pump test is the Vaillant Geotherm plus. With an overall score of 2.1, the model is convincing in all rating categories. At the same time, the geothermal heating system made by Vaillant is one of the cheaper models with a purchase price of € 10,000.
Also with the overall grade “good” and a rating of 2.4, the Alpha Innotec WZS and the Stiebel Eltron WPC 10 were cut off. With an investment of about 9,500 euros, the models are not only qualitatively, but also in terms of price.
In the middle field with the grade “satisfactory” move geothermal heat from Dimplex, Junkers and Waterkotte. These differ mainly from the lower energy efficiency of the Top 3, but can also convince with top marks in terms of material processing.
One of the rear seats, but still with an overall score of 2.9, is occupied by the Viessmann Vitocal 343, which, especially in terms of energy efficiency, has made sacrifices to the other test models. With a purchase price of less than 9,000 euros, the Vitocal stands out for its good price-performance ratio.
Air heat pump test: The conclusion
Overall, it can be stated that consumers are ill-advised with none of the models listed in the heat pump test. Although there are significant differences between the test winner and the rear positions in terms of ratings, overall no geothermal heating has performed worse than 3.0.
Finally, it remains to be said that it makes sense as a consumer to look at other test results and to benefit in forums and blogs from the experience of other consumers. Another recommendable study on heat pumps has been published by the Frauenhofer Institute for Solar Energy Systems (ISE).
Important parameters for heat pumps
COP performance coefficient – coefficient of performance
The COP of electric heat pumps is the ratio of the output heat output in kilowatts (kW) relative to the absorbed electric power of the heat pump in kW. The coefficient of performance can only be measured under constant operating conditions (laboratory). It is important to specify the operating points at which the COP was measured, for example
- B0 / W35: B = Brine (English for brine) with 0 degrees Celsius at a temperature of 35 degrees Celsius of the heating water at the exit from the heat pump (flow temperature).
- W10 / W35 (Water) stands for the temperature of the groundwater of 10 degrees Celsius at a temperature of the heating water at the exit from the heat pump of 35 degrees.
- A2 / W35: A (Air) stands for air temperature of 2 degrees Celsius with a flow temperature of 35 degrees.
It is measured according to two standards DIN EN 255 and DIN EN 14511, which, however, deviate from each other in their measuring method and lead to different results. Therefore, only one COP can be compared, indicating the operating points and the standard.
Annual employment rate (JAZ)
The JAZ describes the ratio of the energy emitted by the heat pump to the heating network over one year to the electrical energy consumed during this period. The JAZ applies to the entire heating system, in which the heating surfaces together with the required temperatures, the hot water (if heated by the heat pump), the user behavior up to the climatic conditions are included. The JAZ can be roughly calculated from the COP. It is the decisive parameter for heat pumps.
Minimum annual coefficient / BAFA
The Federal Office of Economics and Export Control (BAFA) grants subsidies for heat pumps only if a minimum annual work rate of 3.8 for geothermal heat pumps (brine / water) and water heat pumps (water / water) is proven. For air heat pumps (air / water), the minimum annual working load must be 3.5. In the case of gas heat pumps, it is necessary to prove a yearly heating coefficient of at least 1.3. The COP value required to calculate the annual work count is at
- Geothermal heat pumps (brine / water) 4,30 (operating point B0 / W35),
- Water heat pumps (water / water) 5,10 (operating point W10 / W35)
- Air heat pumps (air / water) 3,10 (operating point A2 / W35)
Conversion to a heat pump
If you have an oil or gas heater, the conversion to a heat pump is particularly interesting. Find out more in our article ” Conversion from an oil or gas heater to a heat pump “.