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How Does an Air Source Heat Pump Work?
Posted On: December 2, 2023
An air source heat pump (ASHP) is a type of heating and cooling system that transfers heat between the outside air and your home. It operates on the principle of extracting heat from the outdoor air and transferring it indoors for heating, or extracting heat from indoor air and transferring it outside for cooling. Here's a basic explanation of how an air source heat pump works:
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Absorption of Heat:
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Heating Mode: In the heating mode, the heat pump absorbs heat from the outdoor air. Even in cold weather, there is still heat energy present in the air. The heat pump's refrigerant, a special fluid with a low boiling point, circulates through an outdoor coil (evaporator coil) and absorbs heat from the air.
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Cooling Mode: In the cooling mode, the process is reversed. The heat pump absorbs heat from the indoor air, and the refrigerant carries this heat to the outdoor coil (condenser coil) where it is released into the outside air.
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Refrigeration Cycle:
- The refrigerant circulates between the indoor and outdoor coils, changing from a liquid to a gas and back again. As it evaporates in the outdoor coil, it absorbs heat, and as it condenses in the indoor coil, it releases heat.
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Compressor:
- The refrigerant is compressed by a compressor located in the outdoor unit. Compression increases the temperature of the refrigerant, making it capable of releasing heat to the indoor air during the heating mode or absorbing heat from the indoor air during the cooling mode.
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Indoor Unit:
- In the heating mode, the indoor unit contains a coil (evaporator coil) where the refrigerant releases its absorbed heat to warm the indoor air. In the cooling mode, the indoor coil acts as a condenser, releasing heat extracted from the indoor air to the refrigerant.
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Distribution System:
- The heated or cooled air is then distributed throughout the building using a fan and a system of ducts or a ductless mini-split configuration.
The efficiency of an air source heat pump is measured by its Coefficient of Performance (COP), which represents the ratio of heat output to the electrical energy input. ASHPs are known for being energy-efficient, particularly in moderate climates. They are an environmentally friendly alternative to traditional heating and cooling systems, as they use the ambient air as a heat source or sink, reducing the reliance on fossil fuels. However, their efficiency may decrease in extremely cold climates, so it's important to consider the local climate when evaluating their suitability for a particular location.
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See What Our Customers Are Saying:
Aug 20, 2022
From quote, to installation, to follow up, Twintech provided excellent service. I would highly recommended their services.
Aug 19, 2022
I had a really great experience with these guys. The salesman Bob was clearly very knowledgeable about everything to do with heating and cooling a home, spent a lot of time with us going over the details of the job, never rushed us and came back after the install to make sure we were happy. The installation crew was excellent, they covered the floors all the way from outside down to the basement furnace room, kept the place clean, got the work done on time and were very friendly. Ive got 15 years in the contracting/ construction industry and these guys are one of the most professional companys Ive dealt with. Great company!
Aug 18, 2022
Had great service and clean-up was good. Was happy with my salesman. They were very friendly and helpful. I needed a new furnace as our was over 20 years old. The furnace and air-conditioner work great and they are very quiet. I am very pleased with the service and product I received.
Aug 17, 2022
Met with Dave for the sales process and he was great about explaining and going over everything to us. The install happened very quickly and the team were super professional and friendly. We are very happy with this company and their services and we definitely recommend them to others. Thankful my sister recommended them to me!
Aug 16, 2022
Reviews for Twintech were good, and they did not disappoint. After an initial visit to discuss the suitable AC unit for replacement, an installation date was available in just a couple of days, and everything was installed without a hitch. Highly recommended
Aug 16, 2022
Very pleased with the installation of our new furnace and A/C unit. From quotation stage to the completion of the job Twintech was very professional.
Thank you for a job well done.
Aug 15, 2022
My old water heater quit on me. I called TwinTech. In less than 4 days, I had my new water heater installed and the old one taken away. The whole process was quick, easy, pleasant, and well done. This is the third time I've dealt with TwinTech and I've been satisfied each time.
Aug 14, 2022
I had them replace my furnace last year. When it came time for the air conditioner this year, I did not hesitate to call Twintech again. I will also have them perform regular maintenance on them.
Aug 13, 2022
We required a new HVAC replacement after running the old
system for 18 years.
Dave understood our requirements and gave us a quote that
covered all the necessary items.
Installation was fast and very tidy. Everything works as
it should. Our thanks to Greg, Mitch and others for their
excellent work. Recommend this family owned business to
anyone else, considering HVAC or other work.
Aug 12, 2022
I needed a new furnace and A/C to replace my 21 yr. old units, and went to the internet to view potential companies in May, I received 3 quotes,
and chose Twintech based on their salesman Dave who was very detailed and covered off everything on what Twintech was all about,
an extremely dedicated company with so many years of experience, and after reading the on line reviews I was sold on Twintech, who did not disappoint as the installation team were top notch with Greg leading,
I would highly recommend this company without any doubts, in my books they are first class all the way. Our new Amana furnace and A/C are working perfectly !
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