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heinbloed
15th September 2006, 10:12 PM
Many heatpumps do contain refrigerants that are climate damaging. The equivalents of the damaging effect are as follows (the number compares the climate damaging effect of 1kg of refrigerant with the according ammount (in kg) of CO2) :
R12 CFCH ------------6,640*
R134a FCH------------1,300
R404A FCH------------3,260
R407 FCH-------------1,530
R410A FCH------------1,350
R744(CO2)------------1
R717(Ammonia)------0
R290(Propane)-------3
R600a(Butane)-------3
R1270(Propene)------3
*=banned for use in new heatpumps, but still allowed for refilling
(Source:SonneWind&Waerme, issue9/2006, page28-31, ISBN 1861-938X H2607)

Take for example R410A (used in DAISAIKA heatpumps as advertised in Construct Ireland in the latest edition Issue3,volume3):
One kilogramm R410A refrigerant has a climate damaging potential of 1,350 times more then 1 kg of CO2.
An average heatpump for a standard home contains about 2-3 kg of refrigerant, depending on the make/brand and the desired application.
So when the refrigerant content of a Daisaika heatpump (sold by www.gtphelan.ie who is another advertiser/article writer in CI, btw.) is released into the environment the climate damage of an equivalent of 3,500 kg of CO2 is caused. Which is roughly equivalent to the usage/burning of 15,000 kWh of natural gas. This amount of natural gas would be enough to heat a standard home for about 2 years, or a well insulated home using 30kWh/m2/a for about 5 years.....
And this number does not contain the climate damaging effect of the electric energy used to power the pump.
ALL heatpumps do leak.ALL heatpumps need regular refilling of the leaked amount of refrigerant, ask your car dealer when buying a car with air conditioning.....

Hardly any of the refrigerant installed is ever recovered, ask the manufacturers of heatpumps for their wasterecovery numbers and demand the receipts of their waste disposal contractors, compare these with the already used amount of refrigerants...... The refrigerant not only leaks, it is released during production of it , when filling the heatpump and when dismanteling the heatpump.

But not all heatpumps do contain FCHs. The use of FCHs in fridges/freezers is nearly outphased - exept for some very cheap ones from Asia. This intellectual step forward, for a better environment/SUSTAINABLE building, is not followed at all times by Construct Ireland. Advertisings by companys using irresponsibel substances are still accepted.
Here are some companys producing FCH-free heatpumps as well:
Capito, Dimplex, Hautec, Nibe, Tecalor.
And these are only some of them......always ask for the climate damaging effect of the refrigerant. It can be as little as zero....