Asked by: Guilhem Tugujekov
home and garden indoor environmental quality

How do air to water heat pumps work?

Last Updated: 5th February, 2020

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An air-to-water system distributes heat via your wet central heating system. Heat pumps work much more efficiently at a lower temperature than a standard boiler system would. An air-to-air system produces warm air which is circulated by fans to heat your home. They are unlikely to provide you with hot water as well.

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Accordingly, how efficient are air to water heat pumps?

An air to water heat pump typically costs 50% to 60% less to heat your home than a tradition fossil fuel system such as an oil or gas boiler. Put simply the 'efficiency' of an air to water heat pump is from 320% to 400% or more where as even a condensing boiler has an efficiency of only 92%.

Similarly, are air source heat pumps expensive to run? The reduction in air source heat pump running costs would be of only 3.5% in comparison to a gas boiler. If you're using the heat pump to produce DHW as well, your running costs will increase. As stated above, when the ground-source heat pump is used for space heating only, the running costs are reduced by 52%.

Additionally, what is the best air to water heat pump?

According to the test result, Thermia Atec is the heat pump that delivers the biggest overall savings. Moreover, Thermia Atec has top results in terms of hot water temperature, low noise levels and low energy losses. The test results in brief – Thermia ATEC: Has the highest annual efficiency.

What temperature is a heat pump not effective?

If you are impatient, I won't make you wait; heat pumps don't work well below 25-30 degrees Fahrenheit. But what you might not know is that the heat pump temperature range is broader than most people think, and with the addition of supplemental heating it can work even in the chilliest of temperatures.

Related Question Answers

Edelweiss Zachert

Professional

What are the disadvantages of heat pumps?

Disadvantages
  • High Upfront Cost. Heat pumps have a large upfront cost, but on the other hand, their operating costs translate to long-term savings on energy bills and lead to a path of reduced carbon emissions.
  • Difficult to Install.
  • Questionable Sustainability.
  • Significant Work.
  • Cold Weather.
  • Carbon Neutral.
  • Planning Permissions.

Octavia Bierbaum

Professional

Why does my heat pump use so much electricity?

If you are all electric, you should have a heat pump and electric furnace (also called an electric air handler). This is the most efficient type of HVAC system to have in an all electric house. Dirty filters restrict air flow and cause the system to run longer to heat the house. This causes a higher electric bill.

Dochia Galvani

Professional

Is a heat pump worth it?

When a Heat Pump Is Worth the Investment
Heat pumps don't “lose” any power due to working as a heater as well. In fact, you can expect superior cooling. And if your heat pump is replacing an air conditioner that's 10-15 years old, you'll most likely have cooling that's better and less expensive than before.

Vladimira Spinelli

Explainer

Do you really save money with a heat pump?

Heat pumps do in fact save your money on energy costs. This means lower electricity bills for a comfortable home – heat pumps are very inexpensive to run, increasing your electric bill by an average of $75 monthly per heat pump that is constantly running in the home.

Kizzy Basser

Explainer

How much does it cost to put in a heat pump?

Heat Pump Installation Cost
Both factors range from as low as a few hundred dollars to as high as $10,000. Thus, the average heat pump replacement cost can vary. Nonetheless, taking into account over 2,900 heat pump installation and replacement projects, the average cost to install a heat pump is approximately $5,100.

Stela Dratschmidt

Explainer

How long does a heat pump take to heat water?

Overall, a heat pump usually requires between 24 and 72 hours to heat a swimming pool by 20°F (11°C) and between 45 and 60 minutes to heat a spa by 20°F (11°C). So now you know some factors that affect your swimming pool's or spa's required heating time.

Amandeep Bullon

Pundit

How big of a heat pump do I need?

While inside your home we first consider the square footage of the room/area and using this guide determine which sized heat pump will suit that space:
  1. 9,000 BTU – ~250 sq. ft to ~450 sq. ft.
  2. 12,000 BTU – ~550 sq. ft to ~800 sq. ft.
  3. 15,000 BTU – ~750 sq. ft to ~1100 sq. ft.
  4. 18,000 BTU – ~850 sq. ft to ~1250 sq. ft.

Hayat Bancells

Pundit

How much electricity does a heat pump use?

Appliance Electricity Usage
Appliance Typical Consumption Per Hour Cost Per Hour (at 10 cents per kilowatt-hour)
Central air conditioner/heat pump 15,000 watts $1.50
Clothes dryer/water heater 4,000 watts 40 cents
Water pump 3,000 watts 30 cents
Space heater 1,500 watts 15 cents

Lur Larss

Pundit

What is the most efficient way to run a heat pump?

Eight ways to save money using your heat pump
  1. The best way to use a heat pump is to keep the setting low (18ºC or - 20ºC).
  2. Prepare your heat pump for winter.
  3. Clean both your indoor and outdoor heat pump filter regularly – at least once a year.
  4. Only heat the space you're using.

Hermine Ruzavin

Pundit

Should I leave my air source heat pump on all the time?

According to Energywise, you shouldn't leave your heat pump on all day. "You should only heat your home when you need it," Hoerning said. "Don't leave your heat pump on all day if you're not there. You can set the timer to turn the unit on half an hour or so before you get home or before you get up in the morning."

Danita Jelnin

Pundit

Are air to water heat pumps noisy?

But air source heat pumps have one or two drawbacks that oil furnaces and electric baseboards don't have, the most common of which is air to water heat pump noise levels. The only noise you'll hear from the outdoor portion of the heat pump is from the fan running, which pushes air across the air coil.

Narda Pinther

Teacher

What brand is the best heat pump?

Best Heat Pumps of 2020
  1. Goodman. Goodman is a well-known brand in the HVAC industry and provides great energy-efficient heating and cooling solutions for homes large and small.
  2. Carrier.
  3. Ruud.
  4. Trane.
  5. Rheem.
  6. Lennox.
  7. Bryant.
  8. American Standard.

Lingmiao Smorgansky

Teacher

Why are heat pumps so expensive?

Heat pump prices
The exact price depends on factors such as the size of your home and the heat pump's rating. More expensive units typically have higher energy ratings. Geothermal pumps, sometimes called ground-to-air pumps, are more expensive because they're installed in the ground.

Kevyn Frank

Teacher

Does a heat pump run all the time?

In fact, many heat pumps may run continuously during bitterly cold weather. Believe it or not, a properly sized and installed heat pump should run almost continuously when it is below 30 degrees or so. If you want the fan to run only when there is a need for A/C or Heat, set your thermostat to "AUTO".

Lilla Lucchesi

Teacher

Is it worth upgrading radiators?

While replacing your radiator might seem like a relatively simple procedure, it can be messy and time consuming. A good plumber should be able to replace several radiators in a day, so it's worth spending a little extra to see the work done quickly and professionally.

Mary Kroog

Reviewer

Who makes the most reliable heat pumps?

Three other large brands, Bryant, Carrier, and Lennox, earn a Very Good rating for reliability as do heat pumps from five smaller brands—Comfortmaker, Day & Night, Heil, Keeprite, and Tempstar.

Qiang Melles

Reviewer

Can a heat pump cool a house?

The heat pump's main advantage is it can cool and heat, so you can use it all year round. A heat pump pulls heat out of the outside air when it heats your home but can be reversed to pull heat out of your house and cool. In fact, our climate is one of the most efficient for heat pump operation.

I├▒aky Grossmann

Reviewer

Which is better ground source or air source heat pumps?

Energy efficiency
Ground source heat pumps are more efficient than air source heat pumps due to the fact that heat is transferred through the ground via the movement of water, and water has a greater capacity to hold heat compared to air.

Stine Mosenlechner

Reviewer

How much electricity does a heat pump use per month?

Electric usage from a cold climate heat pump (GMP)
Heat pump BTU rating Avg. monthly bill increase Avg. monthly kWh increase
9,000 $26 163 kWh
12,000 $37 231 kWh
15,000 $47 294 kWh
18,000 $63 394 kWh