Help is at hand though courtesy of [petey53], who made his own ground source heat pump for his Toronto house using a pair of window-mounted air conditioning units. A custom copper “trombone ...

US-based heating technology manufacturer Carrier is set to start field testing its prototype air-source heat pump for cold climates. The project is part of the “Cold Climate Heat Pump Challenge ...

of using an air-source heat pump is the high efficiency it can provide ... ton of air conditioning capability for every 500 square feet in your home. You should also consider the average ...

“CO 2 has a far lower GWP and ozone depletion impact than commonly used synthetic refrigerants and, used in its transcritical cycle, can maintain heat pump performance at lower source ...