Air-to-water heat pump
(+) No atmospheric emissions
(-) Installed in external unit / noise level
New installation
Renovation
Investment
Environment
Economical to use
Ground-to-water – Geothermal heat pump
(+) No atmospheric emissions
(-) Less suitable for renovations
New installation
Renovation
Investment
Environment
Economical to use
Wood – Pellets
(+) Renewable energy
(-) Needs storage space
New installation
Renovation
Investment
Environment
Economical to use
Thermal solar
(+) Clean, renewable energy
(-) Needs to be combined with another system
New installation
Renovation
Investment
Environment
Economical to use
Modulating gas condensing boiler
(+) Clean burning / compact wall-mounted solution
(-) Cost of connection to gas supply
New installation
Renovation
Investment
Environment
Economical to use
Oil-fired condensing boiler
(+) Simple replacement for an existing oil-fired system
(-) Needs space for a tank / refurbishment of an existing tan
New installation
Renovation
Investment
Environment
Economical to use