Geothermal systems are the most energy-efficient, cost-effective and environmentally friendly heating and cooling options on the market. They provide air conditioning and heat in one system, without relying on non-renewable resources. Aspen Aire installs and repairs geothermal heat pumps in Ankeny, Des Moines and all of central Iowa.
A geothermal system captures free, renewable heat energy from the ground. About 47% of the sun’s energy that reaches Earth is absorbed by and stored in the ground. A geothermal system transfers heat energy between the ground and a home or other building.
A geothermal system uses a heat pump to move heat from the home and into the cooler earth during the summer, and from the ground into the home during winter.
This transfer of heat energy is done through a series of pipes that are buried in the ground or sunk in a pond, or by using well water. Because a geothermal system moves heat instead of burning a fossil fuel to generate heat, it's far more energy-efficient than a gas furnace.
The heat exchange pipes are buried in the ground below the frost line, usually about 6 to 10 feet deep. Refrigerant moves through these ground coils and deposits heat from inside the building when in cooling mode or absorbs heat from the ground when in heating mode.
Since the ground temperature stays relatively consistent at that depth, geothermal or ground source heat pumps operate more efficiently than standard air-source heat pumps, especially in winter.
A closed loop geothermal system has 2 types of refrigerant: One that runs through ground loops and one that runs through the heat pump components inside the building. The refrigerant in the ground loops is a mix of water and anti-freeze that circulates in a closed cycle. The anti-freeze mixture passes through the ground loops and then enters a water-to-refrigerant heat exchanger inside the heat pump. There it either transfers heat to or absorbs heat from the indoor refrigerant, depending on whether it’s in heating or cooling mode. The indoor exchanger refrigerant is the same as that used in AC units.
The closed loop configuration can be horizontal, vertical or pond/lake:
An open loop geothermal heat pump, or open loop system, uses ground water in place of refrigerant in the loops. This type of system is less common than closed loop systems because there has to be easy access to a source of ground water. Your Aspen Aire technician will be able to tell you whether an open loop system would work for your property or if a closed loop system would be best.
While a geothermal heat pump is a larger upfront investment than other HVAC systems, with tax rebates and energy savings the system can pay for itself in as little as 5 years.
We carry a variety of geothermal heat pumps. Contact us today to discover your options and receive a free quote.
by Karess Carter - 1/31/2020
Do you know how well YOUR furnace is working? Mine was fine. It heated the house. We were warm. All was good.
I had Aspen Aire come just for a service check. I knew my furnace was older because it came with the house and we’ve lived there for 13 years. We were prepared that eventually it would stop working and we would need to replace it. But it couldn’t hurt to have a check up.
Until the day we got the news that our furnace was leaking a lot of carbon monoxide into our house. No, I didn’t have a detector in my house. We were advised to immediately make plans to replace our furnace. And sleep with the furnace off. And get a carbon monoxide detector that night. Can you imagine the fear we were riddled with?
I have no idea how long this has been going on. What I do know, is that I haven’t felt ‘good’ in an extremely long time. From headaches, to being dizzy and nauseous, I have felt off for months. (I mean seriously I can’t remember the last time I felt good.) But the headaches have just been out of control for the last year. My daughter has been a different person as well. Our whole house has been out of whack. I can’t say that this is the root of it all, but I can speculate.
When we got the news, Aspen Aire was there for us. They also found that our hot water heater was leaking and it was time to replace that. So we found all of this out on Wednesday, and today they are at my house. Right now we are installing a new furnace, AC unit and hot water unit. It’s money we hadn’t planned on spending right now, but I look at it like it’s an investment in our home and our health.
If we decide to sell our house, these upgrades will be important to a potential buyer. But I think the peace of mind knowing we will wake up in the morning is all I need. This was a huge wake up call for my family.
It really is worth it to get your furnace checked. A simple service check up from Aspen Aire could give you peace of mind, and maybe even end up saving a life. People die from carbon monoxide poisoning. I just feel lucky that it wasn’t my family.
Testimonial provided by kioa.com
by Karess Carter - 1/31/2020
Des Moines, Iowa