![Warmth from the earth and air: could heat pumps replace our gas boilers? | Energy industry | The Guardian Warmth from the earth and air: could heat pumps replace our gas boilers? | Energy industry | The Guardian](https://i.guim.co.uk/img/media/253fd3e5adc6e482b9da89a34534a52585fe2a05/0_0_1999_3000/master/1999.jpg?width=700&quality=85&auto=format&fit=max&s=d4f5de750308e52a39740945acb34ae3)
Warmth from the earth and air: could heat pumps replace our gas boilers? | Energy industry | The Guardian
![Simplified piping for heat pump, mod/con boiler | 2015-11-13 | Plumbing and Mechanical | Plumbing & Mechanical Simplified piping for heat pump, mod/con boiler | 2015-11-13 | Plumbing and Mechanical | Plumbing & Mechanical](https://www.pmmag.com/ext/resources/radianthydronics/RH/2015/November/PM1115_Siggy-Figure-1.png?1449004555)
Simplified piping for heat pump, mod/con boiler | 2015-11-13 | Plumbing and Mechanical | Plumbing & Mechanical
![450m boiler upgrade scheme for England and Wales is failing to deliver | Renewable energy | The Guardian 450m boiler upgrade scheme for England and Wales is failing to deliver | Renewable energy | The Guardian](https://i.guim.co.uk/img/media/f7b1e43a61c7548e8aa27032a7073543c98c9238/0_283_4243_2545/master/4243.jpg?width=1200&height=1200&quality=85&auto=format&fit=crop&s=8ea268d58fdaed815641ecc74935e385)
450m boiler upgrade scheme for England and Wales is failing to deliver | Renewable energy | The Guardian
![Sealed system with a heat pump, solar panel and an optional gas boiler as the heat sources - NRG Awareness Sealed system with a heat pump, solar panel and an optional gas boiler as the heat sources - NRG Awareness](https://www.nrgawareness.com/wp-content/uploads/2020/10/Drawings49.jpg)