ASHP are claimed for being much healthier than fossil-fuelled heating including fuel heaters by sustaining a far more even temperature and averting damaging fumes hazard. The ECOMOD 290HT selection of monobloc air source heat pumps can be found in 3 chassis dimensions and 5 outputs: 15kW, 18kW, 27kW, 40kW and https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/