After a long discussion with the home owner, what the best heating system for lowering energy consumption, we stopped our attention on Air to Air heat pump. Also known as VRV (multi split). There is no other system done to this time in Chicago and the Chicago suburbs.
The reason why we didn’t choose a geothermal heating system for that home was because it wasn’t that economical. The existing duct distributing layout wasn’t built by local codes and ASHRAE standards so it led us to drop the standard geothermal heating as an option.
The second reason was that the destruction of the surrounding landscape would be at an additional cost.
These are the major reasons why we recommend Daikin Air to Air heat pump to our client.
The existing heating system is 125,000 BTU 80+ gas fired equipment which serves the first floor and the basement.
We noticed that the temperature in the basement was 15^F higher than the living space on the first floor.
When the couples set the thermostat on 68^F the master bedroom wasn’t able to go over 60^F.
The condition in the dining room was pretty much the same but the cold was felt much more because it was built afterwards straight over a concrete slab.
The laundry room was between the garage and the home and was the draftiest location in the entire home. The temperature was about 50^ at all time.
The second floor was served from the second unit 80,000 BTU and the distributing system was located 100% over the ceiling (unheated space).
All ducts were done only with flexible duct which we never use in our installations.
Total cooling power was 7 tons. 4+3
The condition during the summer hasn’t been satisfying the family as well.
In conclusion ¼ of the total sq. feet 4,400 leaving space + basement 1,200 wasn’t conditioned properly.
About the efficiency of Daikin VRV Multi split Air to Air heat pump we propose:
With the outdoor ambient temperature of 5^F the heating system will operate 320% efficiently including the indoor fan coils. That is only 5% to 8% less than Geothermal closed loop installation.
Geothermal House proposes two VRV multi split systems and one mono split.
In other words we have three outdoor units (condensers) and fourteen indoor fan coils. (Fourteen zones). One fan coil per room.
A central thermostat is controlling the temperature in each individual room independently. That feature gives much more advance control after all.
Total capacity of the equipment is 9.25 tons but the controls can make the system operate like a 2, 3, 4, 5, 6, 7, 9 ton or anything between. That is possible only with built in inverter technology. The compressor drive is not only one or two stage but can change the RPM based on what the set points of each individual zone are.
For example:
After night comes the system can be programmed to keep up the temperature only in zones 1, 2, 3 for say 70^F for eight hours, and the other eleven zones to be set 60^F or 65^F based on what the owner would prefer. In other words it can be programmed to keep up with different temperatures in different rooms.
That will be ¾ from the total capacity of the system that will be in the saving mode for eight hours each day of the year. When 6 a.m. arrives, thirty minutes before, zone 4, 5, 6 could be brought up to the desired temperature OR any other combination between all fourteen zones.
This home for example has a guest room, which doesn’t have to be heated all the time and an office, which needs to be warmed for only a few days. And what about 1,200 feet basement.
This control system for the equipment is beyond imagination for what could be achieved.
The heating system can be basically tuned up in synchrony with the habits of the family.
Geothermal installation in Illinois or any other state is qualified for new construction or if a home has a full rehab. With our experience in geothermal industry in Chicago and surrounding suburbs we think that existing homes under 2,000- 2,500 sq. feet are not economical for Geo installations.
The air-to-air heat pump could be implemented in every existing home as small as 1,000 and up to any size.
The reason why we didn’t choose a geothermal heating system for that home was because it wasn’t that economical. The existing duct distributing layout wasn’t built by local codes and ASHRAE standards so it led us to drop the standard geothermal heating as an option.
The second reason was that the destruction of the surrounding landscape would be at an additional cost.
These are the major reasons why we recommend Daikin Air to Air heat pump to our client.
The existing heating system is 125,000 BTU 80+ gas fired equipment which serves the first floor and the basement.
We noticed that the temperature in the basement was 15^F higher than the living space on the first floor.
When the couples set the thermostat on 68^F the master bedroom wasn’t able to go over 60^F.
The condition in the dining room was pretty much the same but the cold was felt much more because it was built afterwards straight over a concrete slab.
The laundry room was between the garage and the home and was the draftiest location in the entire home. The temperature was about 50^ at all time.
The second floor was served from the second unit 80,000 BTU and the distributing system was located 100% over the ceiling (unheated space).
All ducts were done only with flexible duct which we never use in our installations.
Total cooling power was 7 tons. 4+3
The condition during the summer hasn’t been satisfying the family as well.
In conclusion ¼ of the total sq. feet 4,400 leaving space + basement 1,200 wasn’t conditioned properly.
About the efficiency of Daikin VRV Multi split Air to Air heat pump we propose:
With the outdoor ambient temperature of 5^F the heating system will operate 320% efficiently including the indoor fan coils. That is only 5% to 8% less than Geothermal closed loop installation.
Geothermal House proposes two VRV multi split systems and one mono split.
In other words we have three outdoor units (condensers) and fourteen indoor fan coils. (Fourteen zones). One fan coil per room.
A central thermostat is controlling the temperature in each individual room independently. That feature gives much more advance control after all.
Total capacity of the equipment is 9.25 tons but the controls can make the system operate like a 2, 3, 4, 5, 6, 7, 9 ton or anything between. That is possible only with built in inverter technology. The compressor drive is not only one or two stage but can change the RPM based on what the set points of each individual zone are.
For example:
After night comes the system can be programmed to keep up the temperature only in zones 1, 2, 3 for say 70^F for eight hours, and the other eleven zones to be set 60^F or 65^F based on what the owner would prefer. In other words it can be programmed to keep up with different temperatures in different rooms.
That will be ¾ from the total capacity of the system that will be in the saving mode for eight hours each day of the year. When 6 a.m. arrives, thirty minutes before, zone 4, 5, 6 could be brought up to the desired temperature OR any other combination between all fourteen zones.
This home for example has a guest room, which doesn’t have to be heated all the time and an office, which needs to be warmed for only a few days. And what about 1,200 feet basement.
This control system for the equipment is beyond imagination for what could be achieved.
The heating system can be basically tuned up in synchrony with the habits of the family.
Geothermal installation in Illinois or any other state is qualified for new construction or if a home has a full rehab. With our experience in geothermal industry in Chicago and surrounding suburbs we think that existing homes under 2,000- 2,500 sq. feet are not economical for Geo installations.
The air-to-air heat pump could be implemented in every existing home as small as 1,000 and up to any size.
